Pub Date : 2023-01-29DOI: 10.29313/bcsme.v3i1.7010
Dandi Leroy Tandri, Iswandaru, I. Wijaksana
Abstract. In its production activities, PT Citra Mitra Sehati uses 1 unit of Doosan Dx 500 diggers which have been used for production for 2 years, and 5 units of the new ADT Volvo A40E hauling equipment which has been in operation for 8 years. The condition of mechanical devices that are classified as old and unfit for operation because they often break down and require special maintenance and the greater the operating costs of the equipment, of course affects productivity and production which will decrease. Therefore, so that the mining activities carried out are not disturbed due to equipment problems that are often damaged, it is necessary to replace the equipment. In planning the replacement of mechanical devices, it is necessary to carry out technical and economic studies. For technical studies, it includes studies on the production of equipment, as well as for economic studies, it includes operating costs, ownership costs, Present Worth Cost values and Production Unit Cost values. The purpose of this study was to determine the comparison of the production of old equipment and new equipment, and economic comparisons including operating costs, ownership costs, Present Worth Cost and Production Unit Cost values. The research method used in this research includes the collection of primary data and secondary data. The primary data in this study are working time, volume of excavator bucket material, circulation time, holding time, in-situ density testing, density loose testing, and haul road data. Secondary data in this study are equipment specifications, fuel prices, lubricating oil prices, filter prices, tool life, trade in value, depreciation, tax and insurance, inflation, and interest rates. From primary and secondary data, it is calculated so as to get the results of production values, operating costs, ownership costs, Present Worth Cost and Production Unit Cost for old equipment and new equipment. From the results of a technical study conducted, the old conveyance has a work efficiency of 82.09% with a production of 916.135,48BCM/year, while the new conveyance has a work efficiency of 85.53% with a production of 1,131,547.20 BCM/year. The results of the economic study showed that the operating costs of the old transportation equipment were IDR 3,241,306,604.79/year, and the operating costs for new transportation equipment were IDR 2,537,653,411.82 / year. In addition, the results of the calculation of the Production Unit Cost of the old transportation equipment were Rp. 7.365,17/BCM while for the new transportation equipment, it was Rp. Rp 2.725,38/BCM. Based on the results of the technical and economic studies, the digging and loading equipment needs to be replaced because the productivity of the new equipment is higher and has lower operating costs than the old equipment. From the calculation of the Unit Cost Production, it is known that the new digging-loading and hauling equipment is more economical than the old equipment, and has a be
摘要。在生产活动中，PT Citra Mitra Sehati使用了1台已投入生产2年的斗山Dx 500挖掘机和5台已投入生产8年的新型ADT沃尔沃A40E牵引设备。被归类为老旧和不适合操作的机械设备的状况，因为它们经常发生故障，需要特殊维护，设备的运行成本越大，当然会影响生产力和产量，从而降低。因此，要使进行的采矿活动不因经常损坏的设备问题而受到干扰，就有必要对设备进行更换。在规划机械装置的更换时，有必要进行技术和经济研究。对于技术研究，它包括对设备生产的研究;对于经济研究，它包括运营成本、拥有成本、现值成本值和生产单位成本值。本研究的目的是确定生产旧设备和新设备的比较，以及经济比较，包括运营成本，拥有成本，现值成本和生产单位成本值。本研究采用的研究方法包括收集一手数据和二次数据。本研究的主要数据为作业时间、挖掘机斗料体积、循环时间、保温时间、现场密度测试、密度松动测试、拖路数据。本研究的次要数据包括设备规格、燃油价格、润滑油价格、滤清器价格、工具寿命、价值交易、折旧、税收和保险、通货膨胀和利率。从一次数据和二次数据进行计算，得到旧设备和新设备的产值、运营成本、拥有成本、现值成本和生产单位成本。从技术研究结果来看，旧输油管的工作效率为82.09%，产量为916.135.48亿立方米/年，新输油管的工作效率为85.53%，产量为1131547.20亿立方米/年。经济研究结果表明，旧运输设备的运营成本为3,241,306,604.79印尼盾/年，新运输设备的运营成本为2,537,653,411.82印尼盾/年。此外，旧运输设备的生产单位成本计算结果为Rp. 7.365.17 /BCM，新运输设备的生产单位成本计算结果为Rp。Rp 2.725, 38 / BCM。根据技术经济研究结果，由于新设备的生产率比旧设备更高，运行成本更低，因此需要更换挖掘和装载设备。从单位生产成本的计算可知，新型挖装拖设备比旧设备更经济，具有更好的长期投资。Abstrak。PT Citra Mitra Sehati dalam kegiatan produksinya, menggunakan algali -muat Doosan Dx 500 sebanyak 1单元yang telah digunakan untuk produksi selama 2单元，dan 5单元yang angkut沃尔沃A40E baru yang sudah beroperasselama 8单元。Kondisi dari alat mekanis yang sudah tergolong tua dandak layak beroperaskarena服务于terjadi kerusakan和membutuhkan perawatan, yang khusus serta biaya operasasalat semakin besar, tentenya mempengaruhi producktivitas dan produckksi yang akan semakin menurun。我的名字是“我的名字”，我的名字是“我的名字”，我的名字是“我的名字”。大连，大连，大连，大连，大连，大连，大连，大连，大连，大连。农业生产成本是指农业生产成本，农业生产成本是指农业生产成本，农业生产成本是指农业生产成本。图juan penelitian ini adalah mengetahui perbandingan productksi alallama danalatbaru, danperbandingan secareconomies melputi biaya operasi, biaya kempemilikan, niaya现值成本niaya生产单位成本。方法penelitian yang dilakukan dalam penelitian ini meliputi pengambilan数据入门和数据查找。数据入门padadpenelitian ini yyitu waktukerja，卷料斗挖掘机，waktuedar, waktuhambatan，企鹅密度原地，企鹅密度松散，dan数据jalan angkut。数据来源:印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度，印度。Dari数据primer dan sekunder dihitung seingga mendapatkan hasil nilai producksi, biaya operasi, biaya kepemilikan，现值成本，生产单位成本，untuk lama dan alatbaru。 从技术上讲，旧的运输车的生产效率为82.09%，生产为916135.48 BCM/年份，而新设备的生产效率为85.53%，生产为13131,547,20 BCM/年。根据经济研究，旧的交通工具的运营成本为324万1,306,604,79 /年，新的交通工具的运营成本为2537.653,411.82 /年。此外，还可以计算出旧的运输设备成本单位为Rp 7,365,17 /BCM BCM，而新设备为$ 2,725,38 /BCM。根据这些技术和经济研究，应该更换新的挖掘工具和运输工具，因为新工具的生产力比旧工具更大，操作成本更低。从计算单位成本生产的结果来看，新的挖掘工具比旧工具更划算，长期投资也更好。 从技术上讲，旧的运输车的生产效率为82.09%，生产为916135.48 BCM/年份，而新设备的生产效率为85.53%，生产为13131,547,20 BCM/年。根据经济研究，旧的交通工具的运营成本为324万1,306,604,79 /年，新的交通工具的运营成本为2537.653,411.82 /年。此外，还可以计算出旧的运输设备成本单位为Rp 7,365,17 /BCM BCM，而新设备为$ 2,725,38 /BCM。根据这些技术和经济研究，应该更换新的挖掘工具和运输工具，因为新工具的生产力比旧工具更大，操作成本更低。从计算单位成本生产的结果来看，新的挖掘工具比旧工具更划算，长期投资也更好。
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Pub Date : 2023-01-29DOI: 10.29313/bcsme.v3i1.7014
Muhammad Daffa Naufaldy, Zaenal, I. Wijaksana
Abstract. CV Barokah Laksana Jaya is a company engaged in the sandstone mining sector which is located in Leles District, Garut Regency, West Java Province. This research was conducted because the company needed an economic analysis study to obtain profit value and economic feasibility, so that it could proceed to the feasibility study stage and obtain a Production Operation Mining Business Permit. Economic analysis in this study is used to obtain the value of investment capital and production costs, Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period (PBP) and sensitivity analysis. Economic studies are expected to be able to see the feasibility of an investment that can be used in the form of net profit in the future NPV, IRR, PBP. The data collection technique used uses primary data and secondary data which are then processed using the Discounted Cash Flow Rate of Return (DCFROR) method to obtain NPV, IRR and PBP values. The economic study will be compared with the economic feasibility to get the final result in the form of the economic feasibility of the company. After obtaining the economic feasibility results, a sensitivity analysis is carried out based on the increase in production costs and the decrease in selling prices. The research results were obtained based on the economic studies studied, namely obtaining an NPV of IDR 4,785,181,088 and obtaining a minimum IRR value of 10.35% through the calculation of the Weighted Average Cost of Capital (WACC) and a maximum IRR value of 27.30%. The time to get a return on capital or PBP value is 4.42 years or 4 years and 3 months. Sensitivity analysis was carried out by looking at the parameters of increasing production costs and decreasing selling prices. The results of the sensitivity analysis showed that the maximum increase in production costs was 16%, so the company would suffer a loss. Meanwhile, a decrease in the selling price of 6% will make the company suffer a loss. The results of the comparison of the sensitivity analysis show that the selling price value factor has decreased, which will have a large effect on the profits obtained compared to the increased production costs. Abstrak. CV Barokah Laksana Jaya merupakan perusahaan yang bergerak di bidang Pertambangan batupasir yang terletak di Kecamatan Leles, Kabupaten Garut Provinsi Jawa Barat. Penelitian ini dilakukan dikarenakan perusahaan tersebut memerlukan kajian analisis ekonomi untuk mendapatkan nilai keuntungan dan kelayakan ekonomi, sehingga dapat melanjutkan ke tahap studi kelayakan dan mendapatkan Izin Usaha Pertambangan Operasi Produksi. Analisis ekonomi pada penelitian ini digunakan untuk mendapatkan nilai modal investasi dan biaya produksi, Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period (PBP) dan analisis sensitivitas. Kajian ekonomi diharapkan mampu melihat kelayakan investasi yang dapat digunakan dalam bentuk keuntungan bersih di masa yang akan datang dalam bentuk NPV, IRR, serta
摘要。CV Barokah Laksana Jaya是一家从事砂岩开采的公司，位于西爪哇省Garut Regency的Leles区。之所以进行这项研究，是因为该公司需要进行经济分析研究，以获得利润价值和经济可行性，从而进入可行性研究阶段，并获得生产经营采矿业务许可证。本研究采用经济分析方法获得投资资本和生产成本的价值、净现值(NPV)、内部收益率(IRR)、投资回收期(PBP)和敏感性分析。经济研究有望看到一项投资的可行性，可以在未来以净利润的形式使用NPV, IRR, PBP。使用的数据收集技术使用原始数据和次要数据，然后使用贴现现金流收益率(DCFROR)方法进行处理，以获得NPV, IRR和PBP值。将经济研究与经济可行性进行比较，得出最终结果，形成公司经济可行性报告。在获得经济可行性结果后，根据生产成本的增加和销售价格的下降进行敏感性分析。研究结果基于所研究的经济学研究，即通过计算加权平均资本成本(WACC)得到NPV为4,785,181,088印尼盾，最小IRR值为10.35%，最大IRR值为27.30%。获得资本回报或PBP值的时间为4.42年或4年零3个月。通过观察生产成本增加和销售价格下降的参数，进行敏感性分析。敏感性分析的结果表明，生产成本的最大增幅为16%，公司将遭受亏损。同时，销售价格下降6%将使公司蒙受损失。敏感性分析的对比结果表明，销售价格价值因子有所下降，相对于生产成本的增加，将对获得的利润产生较大的影响。Abstrak。在加巴登加鲁特省，加瓦巴拉特省，Barokah Laksana Jaya merupakan perusahaan yang bergerak di bidang Pertambangan batupasir yang terletak di Kecamatan Leles。Penelitian ini dilakukan dikarenakan perusahaan tersebut memerlukan kajian分析经济学untuk mendapatkan nilai keuntungan dan kelayakan经济学，seingga dapat melanjutkan kemha研究kelayakan dan mendapatkan Izin usha Pertambangan Operasi Produksi。分析经济模式下的投资，包括净现值(NPV)、内部收益率(IRR)、投资回收期(PBP)和分析敏感性。柬埔寨经济，diharapkan mampu melihat kelayakan投资，yang dapat digunakan dalam bentuk keuntunan bersih di masa yang akan datang dalam bentuk NPV, IRR, serta PBP。Teknik pengambilan数据yang digunakan数据primer数据sekunder yang kemudian diolah dengan方法贴现现金流收益率(DCFROR) untuk mendapatkan nilai NPV, IRR和PBP。Kajian ekonomi于阿坎人dikomparasikan dengan kelayakan ekonomi为她mendapatkan hasil akhir berupa kelayakan ekonomi tambang篇perusahaan于。Setelah mendapatkan hasil kelayakan经济，kemudian melakakan分析敏感性，dasarkan kenaikan biaya产品，以及penurunan harga jual。Hasil penelitian yang didapatkan berdasarkan kajian ekonomi yang diteliti yitu didapakan NPV sebesar Rp 4.785.181.088，- serta mendapatkan nilai IRR最小值sebesar 10.35%， melalui perhitungan加权平均资金成本(WACC) serta nilai IRR最大值sebesar 27,30%。Waktu untuk mendapatkan pengembalian modal atau nilai PBP selama 4,42 tahun atau 4 tahun 3 bulan。对双拉坎、登根和梅利梅利参数的敏感性分析。Hasil分析敏感性为didapatkan kenaikan biaya产品，maksimum yaitu sebesar 16%， maka perusahaan akan mendapatkan kerugian。Sedangkan penurunan harga jual sebesar 6%， akan会员perusahaan mendapatkan kerugian。Hasil perbandingan对nilai harga penjualan mengalami penurunan akan berpengaruh besar, keuntungan yang didapatkan dibandingkan dengan biaya产品duksi yang meningkat的敏感性分析。
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Pub Date : 2023-01-29DOI: 10.29313/bcsme.v3i1.6604
Shania Wulanda Sari, Zaenal, Sriyanti
Abstract. PT Arto Bangun Cemerlang is a private mining company engaged in mining andesite minerals located in Garogol Village, Sirnarasa Village, Tanjungsari District, Bogor Regency, West Java Province. The total area is ± 50 Ha with a production target of 25,000 tons/month or 9,803.92 BCM/month, the production target has not been achieved. The products produced by this company consist of 3 products, namely split stone, stone ash and screening, where the marketing of these products is allocated to various areas in Jabodetabek, such as Serpong, Citeureup, Kasabalangka Karawaci, Karawang and Pulau Gadung. In mining activities there are several factors that influence the unachieved production of loading and hauling equipment. This is caused by the high tool cycle time, delay time and improper loading pattern. In this study, it discusses efforts to increase production in loading and conveyance equipment. The loading equipment for the Sany SY215 Excavator and the transport equipment use the Isuzu Giga Tronton Type FV 285 Dump Truck. The effort made is to reduce the cycle time of the loading equipment by changing the bottom loading pattern to top loading. Barrier time is the time for the loading and unloading equipment to not produce, the drag time for the conveyance and unloading equipment can be seen based on the work efficiency of the loading and unloading equipment. The work efficiency of the loading equipment is 62.31% and the work efficiency of the transportation equipment is 89.34%. Based on the results of work efficiency of loading and transport equipment, loading equipment has more waiting time compared to transportation equipment because of the high stand by time on transportation equipment compared to loading equipment. Based on actual production data on the Sany SY215 Excavator loading equipment of 9,475.2 BCM/month and the transportation equipment with 3 units of Isuzu Giga Tronton Type FV 285 Dump Trucks, namely 9,455.04 BCM/month. As for some improvements made such as the pattern of loading and reducing the cycle time (circulation time) of loading and hauling equipment. After the repairs were carried out, there was an increase in production of loading and conveyance equipment, where the production of loading and unloading equipment after repairs was 11,037.6 BCM/month and 11,022.48 BCM/month for conveyances. Abstrak. PT Arto Bangun Cemerlang merupakan perusahaan tambang swasta yang bergerak pada bidang pertambangan bahan galian andesit yang berlokasi di Kampung Garogol, Desa Sirnarasa, Kecamatan Tanjungsari, Kabupaten Bogor Provinsi Jawa Barat. Luas wilayah keseluruhan ± 50 Ha dengan target produksi 25.000 Ton/bulan atau 9.803,92 BCM/bulan, target produksi tersebut belum tercapai. Produk yang dihasilkan perusahaan ini terdiri dari 3 produk yaitu batu split, abu batu dan screening, dimana pemasaran dari produk tersebut dialokasikan ke berbagai daerah di Jabodetabek, seperti Serpong, Citeureup, Kasabalangka Karawaci, Karawang dan Pulau G
摘要。PT Arto Bangun Cemerlang是一家私营矿业公司，从事开采位于西爪哇省茂物县Tanjungsari区Sirnarasa村Garogol村的安山岩矿物。总面积为±50公顷，生产目标为2.5万吨/月或9803.92亿立方米/月，未完成生产目标。该公司生产的产品由三种产品组成，即分裂石，石灰和筛分，这些产品的销售分布在Jabodetabek的各个地区，如Serpong, Citeureup, Kasabalangka Karawaci, Karawang和Pulau Gadung。在采矿活动中，有几个因素影响装载和运输设备的未实现生产。这是由刀具周期时间长，延迟时间和不正确的加载方式造成的。本文就如何提高装载和输送设备的产量进行了探讨。装载设备为三一SY215挖掘机，运输设备为五十铃千兆特龙型FV 285自卸车。所做的努力是通过将底部装载模式改为顶部装载来减少装载设备的循环时间。障碍时间是装卸设备不产生的时间，根据装卸设备的工作效率可以看出输送和装卸设备的阻力时间。装货设备的工作效率为62.31%，运输设备的工作效率为89.34%。从装载和运输设备的工作效率结果来看，由于运输设备的待机时间比装载设备高，因此装载设备的等待时间比运输设备要长。根据实际生产数据，三一SY215挖掘机装载设备为9475.2 BCM/月，运输设备为3台五十铃千兆通型FV 285自卸车，即9455.04 BCM/月。对装车方式和缩短装车、拖运设备的循环时间等方面进行了改进。维修后装卸设备产量有所增加，维修后装卸设备产量11037.6 BCM/月，运输设备产量11022.48 BCM/月。Abstrak。PT Arto Bangun Cemerlang merupakan perusahaan tambang swastan pertambangan bahan galian andesit yang berlokasi di Kampung Garogol, Desa Sirnarasa, Kecamatan Tanjungsari, Kabupaten茂物省爪哇巴拉特。Luas wilayah keseluuhan±50 Ha dunan目标产量为25.000吨/bulan，平均产量为9.803吨/bulan，目标产量为92吨/bulan。Produk yang dihasilkan perusahaan ini terdiri dari 3 product yitu batu split, abu batu dan screening, dimana pemasaran dari product tersebut dialokasikan ke berbagai daerah di Jabodetabek, serperti Serpong, Citeureup, Kasabalangka Karawaci, Karawang dan Pulau Gadung。Pada kegiatan penambangan adanya beberapapfakto yang berpenagaru，这句话的意思是:Pada kegiatan penambangan adanya beberapapfaku。halini disebabkan oleh周期时间警报杨廷吉，waktu hambatan和pola pemuatan yang kurang tepat。padpadpenelitian ini成员的mengenai upaya untuk meningkatkan产品是padpadalatmuat和alatangkut。Alat muat menggunakan挖掘机三一SY215和Alat angkut menggunakan自卸卡车五十铃Giga Tronton型号fv285。Upaya yang dilakukan yitu dengan menurunkan循环时间(waktu edar) pada alat muat dengan mengubah pola pemuatan底部装载menjadi顶部装载dan penembahan jumlah penumpahan桶pada alat angkut。Waktu hambatan merupakan Waktu alat muat dan angkut tidak produksi, Waktu hambatan pada alat angkut danalat patat dilihat berdasarkan efisiensi kerja alat muat dan alat angkut。为62,31 %，为89,34%。Berdasarkan hasil efisiensi kerja alat muat dan alat angkut, alat muat lebih banyak waktu menungu dibandingkan dengan alat angkut karena tingginya waktu stand by time pada alat muat dibandingkan dengan alat angkut。Berdasarkan数据实际产品为:挖掘机三一SY215 sebesar 9.475,2 BCM/bulan; 3台自卸卡车五十铃千兆吨级FV 285 yitu sebesar 9.455,04 BCM/bulan。Adapun beberapa perbaikan yang dilakukan seperti pada pola pemuatan dan menurunkan周期时间(waktu edar) alat muat dan angkut。Setelah dilakukan perbaikan, terdapat peningkatan produksi pada alat muat dan alat angkut, dimana produksi alat muat Setelah adanya perbaikan sebesar 11.037,6 BCM/bulan和alat angkut 11.022,48 BCM/bulan。
{"title":"Kajian Teknis Alat Muat dan Alat Angkut untuk Meningkatkan Produksi pada Penambangan Andesit PT Arto Bangun Cemerlang di Kecamatan Tanjungsari, Kabupaten Bogor, Provinsi Jawa Barat","authors":"Shania Wulanda Sari, Zaenal, Sriyanti","doi":"10.29313/bcsme.v3i1.6604","DOIUrl":"https://doi.org/10.29313/bcsme.v3i1.6604","url":null,"abstract":"Abstract. PT Arto Bangun Cemerlang is a private mining company engaged in mining andesite minerals located in Garogol Village, Sirnarasa Village, Tanjungsari District, Bogor Regency, West Java Province. The total area is ± 50 Ha with a production target of 25,000 tons/month or 9,803.92 BCM/month, the production target has not been achieved. The products produced by this company consist of 3 products, namely split stone, stone ash and screening, where the marketing of these products is allocated to various areas in Jabodetabek, such as Serpong, Citeureup, Kasabalangka Karawaci, Karawang and Pulau Gadung. In mining activities there are several factors that influence the unachieved production of loading and hauling equipment. This is caused by the high tool cycle time, delay time and improper loading pattern. In this study, it discusses efforts to increase production in loading and conveyance equipment. The loading equipment for the Sany SY215 Excavator and the transport equipment use the Isuzu Giga Tronton Type FV 285 Dump Truck. The effort made is to reduce the cycle time of the loading equipment by changing the bottom loading pattern to top loading. Barrier time is the time for the loading and unloading equipment to not produce, the drag time for the conveyance and unloading equipment can be seen based on the work efficiency of the loading and unloading equipment. The work efficiency of the loading equipment is 62.31% and the work efficiency of the transportation equipment is 89.34%. Based on the results of work efficiency of loading and transport equipment, loading equipment has more waiting time compared to transportation equipment because of the high stand by time on transportation equipment compared to loading equipment. Based on actual production data on the Sany SY215 Excavator loading equipment of 9,475.2 BCM/month and the transportation equipment with 3 units of Isuzu Giga Tronton Type FV 285 Dump Trucks, namely 9,455.04 BCM/month. As for some improvements made such as the pattern of loading and reducing the cycle time (circulation time) of loading and hauling equipment. After the repairs were carried out, there was an increase in production of loading and conveyance equipment, where the production of loading and unloading equipment after repairs was 11,037.6 BCM/month and 11,022.48 BCM/month for conveyances. \u0000Abstrak. PT Arto Bangun Cemerlang merupakan perusahaan tambang swasta yang bergerak pada bidang pertambangan bahan galian andesit yang berlokasi di Kampung Garogol, Desa Sirnarasa, Kecamatan Tanjungsari, Kabupaten Bogor Provinsi Jawa Barat. Luas wilayah keseluruhan ± 50 Ha dengan target produksi 25.000 Ton/bulan atau 9.803,92 BCM/bulan, target produksi tersebut belum tercapai. Produk yang dihasilkan perusahaan ini terdiri dari 3 produk yaitu batu split, abu batu dan screening, dimana pemasaran dari produk tersebut dialokasikan ke berbagai daerah di Jabodetabek, seperti Serpong, Citeureup, Kasabalangka Karawaci, Karawang dan Pulau G","PeriodicalId":187584,"journal":{"name":"Bandung Conference Series: Mining Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129570595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-29DOI: 10.29313/bcsme.v3i1.7006
Deden Manzil Franandy, N. F. Isniarno, Zaenal
Abstract. The development of today's technology has increased, for example information technology in exploration activities. One of them is the Remote Sensing method, where this method is included in indirect exploration. Remote sensing is useful in identifying potential zones of mineral deposits by means of data interpretation. Hydrothermal alteration is a process of mineralogy, chemical and textural changes that occur in rocks caused by the interaction of hot fluids with the rocks they pass through. The alteration process is a form of metasomatism, namely the exchange of chemical components between fluids and rock walls. Although the interaction of hot fluids with assistance is an interrelated factor, temperature and fluid chemistry are probably the most influential factors in the hydrothermal alteration process. Hydrothermal alteration in epithermal systems does not depend much on wall rock composition, but is controlled more by rock gradient, temperature and fluid composition. Based on the interpretation of Landsat 8 imagery, hydrothermal alteration minerals are known for their light orange appearance. If the potential alteration areas are digitized and then combined with a lineament pattern, it will show that the distribution of lattered rocks tends to follow the lineament pattern, but some are out of lineament. Most of the alteration area is in alignment with the northwestern direction of the research area. The alteration zone is a zone associated with epithermal gold mineralization. Based on the mapping of the potential for gold mineralization that has been carried out using the lithology, structure, and alteration approaches, the results of the overlay or merger show that the area with the potential for gold mineralization is in the Northwest of the study area, with a total area of distribution of potential mineralization, namely 57.92 ha. Abstrak. Perkembangan zaman sekarang teknologi mengalami peningkatan, contohnya teknologi informasi dalam kegiatan eksplorasi. Salah satunya teknologi metode Penginderaan Jauh (Remote Sensing), dimana metode ini termasuk ke dalam eksplorasi tak langsung. Penginderaan Jauh berguna dalam mengidentifikasi zona potensi endapan bahan galian dengan cara interpretasi data. Alterasi hidrotermal adalah suatu proses perubahan mineralogi, kimiawi dan tekstur yang terjadi pada batuan yang disebabkan oleh interaksi fluida panas dengan batuan yang dilaluinya. Proses alterasi merupakan suatu bentuk metasomatisme, yaitu pertukaran komponen kimiawi antara cairan-cairan dengan batuan dinding. Walaupun interaksi fluida panas dengan bantuan merupakan faktor yang saling terkait, tetapi temperatur dan kimia fluida kemungkinan merupakan faktor yang paling berpengaruh pada proses alterasi hidrotermal. Alterasi hidrotermal pada sistem epitermal tidak banyak bergantung pada komposisi batuan dinding, akan tetapi lebih dikontrol oleh kelulusan batuan, temperatur dan komposisi fluida. Berdasarkan hasil interpretasi Citra Landsa
摘要。当今技术的发展有所增加，例如勘探活动中的信息技术。其中一种是遥感方法，这种方法包括在间接勘探中。遥感在通过数据解释确定潜在的矿藏带方面是有用的。热液蚀变是由热流体与其所经过的岩石相互作用引起的岩石的矿物学、化学和结构变化过程。蚀变过程是交代作用的一种形式，即流体和岩壁之间化学成分的交换。虽然热流体与辅助物的相互作用是一个相互关联的因素，但温度和流体化学可能是热液蚀变过程中最重要的影响因素。浅成热液蚀变不受围岩组成的影响，主要受岩石梯度、温度和流体组成的控制。根据Landsat 8图像的解释，热液蚀变矿物以其浅橙色的外观而闻名。如果对潜在蚀变区进行数字化处理，然后结合一个线型图，就会发现后期岩石的分布趋向于遵循线型图，但也有一些不在线型图之内。蚀变区大部分与研究区西北方向对齐。蚀变带是与浅成热液金矿化有关的带。在利用岩性、构造、蚀变等方法进行金矿化潜力填图的基础上，叠加或合并结果表明，金矿化潜力区位于研究区西北部，金矿化潜力分布总面积为57.92 ha。Abstrak。Perkembangan zaman sekarang technologii mengalami peningkatan, contohnya technologii dalam kegiatan eksplorasi。Salah satunya technology memede Penginderaan Jauh(遥感)，dimana memei termasuk(印度)，dalam eksplorasi(印度)。彭金德，朱海涛，朱海涛，等。在日本、日本、日本等地的地震资料解释中，确定了地震带电位。Alterasi hydrotem adalah suatu研究了秘鲁巴罕矿物学，kimiawi dantekstur yang terjadi pada batuan yang disebabkan oleh interaksi fluida panas dengan batuan yang dilaluinya。翻译为:翻译为:翻译为:翻译为:翻译为:翻译为:翻译为:翻译为:翻译为:翻译为:Walaupun interaksi fluida panas dengan bantuan merupakan因子为阳盐，tetapi温度和kimia fluida kemungkinan merupakan因子为阳盐，berpengaruh因子为阳盐。Alterasi水热沉积系统，表层沉积，沉积，沉积，沉积，沉积，沉积，温度和沉积。Berdasarkan hasil interpretasi Citra Landsat 8, mineral alterasi hydrothermal dikenal dengan kenampakan warna oranye muda。在中国，有一种叫Apabila daerah potential - alterdigdigdian digabungkan dengan poluruusan，一种叫maka akan menunjukkan sebaran batuan yang terlaterung mengikuuti poluruusan，一种叫tetapi ada juga yang berada di luuruusan的植物。塞巴吉亚籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍籍。交替带，交替带，交替带，交替带，交替带，交替带，交替带。Berdasarkan pemetaan potential mineralalisisisyyth .构造、构造、变化、maka dari hasil覆层、penggabungan menunjukkan daerah yang berpotentisi terdapat pemineralan . berada padbarat Laut daerah penelitian、dunan total luas dari sebaran potential mineralisisyyit57,92 ha。
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Pub Date : 2023-01-28DOI: 10.29313/bcsme.v3i1.6161
Muhammad Faiq Syahdan Banama, Zaenal, Noor Fauzi Isniarno
Abstract. PT Manusela Prima Mining is a company engaged in nickel mining located in Piru Village, West Seram Regency, Maluku Province. Land that has been mined will be reclamated with the stages of land arrangement, revegetation, maintenance to plant maintenance and the total cost of reclamation. The purpose of this research is to find out the technical plans for land management, revegetation and care and maintenance in areas of former nickel mining activities. The data that will be needed is the productivity of mechanical equipment, reclamation area, compaction material (topsoil and overburden), land planning time, fuel data, revegetation costs, to be able to find out the total reclamation budget. The technical scheme plan for land use stewardship from 2023-2029 will be carried out in an area of reclamation area and in accordance with a mining land area of 8.78 Ha. The stages of land use stewardship were carried out using Kobelco SK200 Excavator mechanical devices, Komatsu D85E-SS Bulldozers and Hino 500-FM260TI Dumptrucks with a requirement of 131,700 LCM topsoil compaction material and 439,000 LCM overburden. Then the revegetation stage uses staple crops in the form of acacia trees (Acacia mangium), insert plants in the form of cashew trees (Anacardium occidentale) and banana trees (Parkia speciose) and for cover crops in the form of nuts (mucuna bracteate). This plan will be carried out up to the maintenance and care stage to achieve 100% success for reclamation activities. Based on the research results, it can be concluded that PT Manusela Prima Mining with a mining business license (IUP) ends in 2029 and reclamation activities last until 2029 with a total reclamation budget of Rp 2,594,925,351. Abstrak. PT Manusela Prima Mining merupakan perusahaan yang bergerak di bidang pertambangan nikel yang berlokasi di Desa Piru, Kabupaten Seram Bagian Barat, Provinsi Maluku. Lahan yang sudah ditambang akan dilakukan reklamasi dengan tahapan penataan lahan, revegetasi, perawatan hingga pemeliharaan tanaman dan total biaya reklamasi. Tujuan dari penelitian ini agar dapat mengetahui rencana teknis penataan lahan, revegetasi serta perawatan dan pemeliharaan pada area bekas kegiatan penambangan nikel. Data yang akan dibutuhkan yaitu produktivitas alat mekanis, luas lahan reklamasi, material pemadatan (topsoil dan overburden), waktu penataan lahan, data bahan bakar, biaya revegetasi, untuk dapat mengetahui anggaran biaya total reklamasi. Rencana skema teknis untuk penatagunaan lahan dari tahun 2023-2029 yang dilakukan pada luas area reklamasi dan sesuai dengan luas lahan penambangan sebesar 8,78 Ha. Tahapan penatagunaan lahan di lakukan dengan menggunakan alat mekanis Excavator Kobelco SK200, Bulldozer Komatsu D85E-SS dan Dumptruck Hino 500-FM260TI dengan kebutuhan material pemadatan topsoil 131.700 LCM dan overburden 439.000 LCM. Kemudian tahapan revegetasi menggunakan tanaman pokok berupa pohon akasia (acacia mangium), tanaman sisipan berupa pohon
摘要PT Manusela Prima Mining是一家从事镍矿开采的公司，位于马鲁古省西Seram Regency的Piru村。对已开采的土地进行复垦，按照土地整理、植被恢复、维护到植物维护的阶段和复垦总费用进行复垦。这项研究的目的是找出以前镍采矿活动地区的土地管理、植被恢复、照料和维持的技术计划。需要的数据是机械设备的生产率、复垦面积、压实材料(表土和覆盖层)、土地规划时间、燃料数据、植被恢复成本，以便能够找出总的复垦预算。2023-2029年土地利用管理技术方案计划将在复垦区范围内，按照8.78 Ha的矿山用地面积进行。土地利用管理阶段使用神钢SK200挖掘机机械设备，小松D85E-SS推土机和日野500-FM260TI自卸车进行，要求表层土压实材料13.17万LCM，覆盖层43.9万LCM。然后，在植被恢复阶段，以金合欢树(acacia mangium)的形式种植主要作物，以腰果树(Anacardium occidentale)和香蕉树(Parkia speciose)的形式种植插入植物，并以坚果(mucuna bracteate)的形式作为覆盖作物。此计划将一直执行至维修保养阶段，以确保填海活动100%成功。根据研究结果，可以得出结论，拥有采矿营业执照(IUP)的PT Manusela Prima Mining将于2029年结束，复垦活动将持续到2029年，复垦预算总额为2,594,925,351卢比。Abstrak。PT Manusela Prima Mining merupakan perusahaan yang bergerak di bidang pertambangan nickel yang berlokasi Desa Piru, Kabupaten Seram Bagian Barat，省马鲁古。拉汗阳sudah ditambang akan dilakukan reklamasi dengan tahapan penataan Lahan, regegetasi, perawatan hinga pemeliharaan tanaman dan total biaya reklamasi。Tujuan dari penelitian ini agar dapat mengetahui rencana teknis penataan lahan, revegetasi serta perawatan dan pemeliharaan pada area bekas kegiatan penambangan nikel。Data yang akan dibutuhkan yitu producktivitas alat mekanis, luas lahan reklamasi, material pemadatan(表土和覆盖层)，waktu penataan lahan, Data bahan bakar, biaya revegetasi, untuk dapat mengetahui anggaran biaya total reklamasi。Rencana skema teknis untuk penatagunaan lahan dari tahun 2023-2029 yang dilakukan pada luas area reklamasi dan sesuai dengan luas lahan penambangan sebesar 8,78 Ha。挖掘机神钢SK200，推土机小松D85E-SS丹自卸车日野500-FM260TI登干克布土料表层土131.700 LCM丹覆盖层439.000 LCM。Kemudian tahapan regetasi menggunakan tanaman pokok berupa pohon akasia (mangium)， tanaman sisipan berupa pohon jambu mete (anacardium occidentale)， pohon pete (parkia species)， untuk tanaman penutup berupa kacang-kacangan (mucuna breteate)。我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说，我是说。Berdasarkan hasil penelitian dapat dispulpulkan pada PT Manusela Prima矿业公司(IUP) berakhir pada 2029 dan kegiatan reklamasi berlangsung hingga tahun 2029 dengan total anggaran biaya reklamasi yitu Rp 2.594.925.351，-。
{"title":"Kajian Rencana Teknis dan Anggaran Biaya Reklamasi Tambang pada Penambangan Nikel PT Manusela Prima Mining di Desa Piru, Kabupaten Seram Bagian Barat, Provinsi Maluku","authors":"Muhammad Faiq Syahdan Banama, Zaenal, Noor Fauzi Isniarno","doi":"10.29313/bcsme.v3i1.6161","DOIUrl":"https://doi.org/10.29313/bcsme.v3i1.6161","url":null,"abstract":"Abstract. PT Manusela Prima Mining is a company engaged in nickel mining located in Piru Village, West Seram Regency, Maluku Province. Land that has been mined will be reclamated with the stages of land arrangement, revegetation, maintenance to plant maintenance and the total cost of reclamation. The purpose of this research is to find out the technical plans for land management, revegetation and care and maintenance in areas of former nickel mining activities. The data that will be needed is the productivity of mechanical equipment, reclamation area, compaction material (topsoil and overburden), land planning time, fuel data, revegetation costs, to be able to find out the total reclamation budget. The technical scheme plan for land use stewardship from 2023-2029 will be carried out in an area of reclamation area and in accordance with a mining land area of 8.78 Ha. The stages of land use stewardship were carried out using Kobelco SK200 Excavator mechanical devices, Komatsu D85E-SS Bulldozers and Hino 500-FM260TI Dumptrucks with a requirement of 131,700 LCM topsoil compaction material and 439,000 LCM overburden. Then the revegetation stage uses staple crops in the form of acacia trees (Acacia mangium), insert plants in the form of cashew trees (Anacardium occidentale) and banana trees (Parkia speciose) and for cover crops in the form of nuts (mucuna bracteate). This plan will be carried out up to the maintenance and care stage to achieve 100% success for reclamation activities. Based on the research results, it can be concluded that PT Manusela Prima Mining with a mining business license (IUP) ends in 2029 and reclamation activities last until 2029 with a total reclamation budget of Rp 2,594,925,351. Abstrak. PT Manusela Prima Mining merupakan perusahaan yang bergerak di bidang pertambangan nikel yang berlokasi di Desa Piru, Kabupaten Seram Bagian Barat, Provinsi Maluku. Lahan yang sudah ditambang akan dilakukan reklamasi dengan tahapan penataan lahan, revegetasi, perawatan hingga pemeliharaan tanaman dan total biaya reklamasi. Tujuan dari penelitian ini agar dapat mengetahui rencana teknis penataan lahan, revegetasi serta perawatan dan pemeliharaan pada area bekas kegiatan penambangan nikel. Data yang akan dibutuhkan yaitu produktivitas alat mekanis, luas lahan reklamasi, material pemadatan (topsoil dan overburden), waktu penataan lahan, data bahan bakar, biaya revegetasi, untuk dapat mengetahui anggaran biaya total reklamasi. Rencana skema teknis untuk penatagunaan lahan dari tahun 2023-2029 yang dilakukan pada luas area reklamasi dan sesuai dengan luas lahan penambangan sebesar 8,78 Ha. Tahapan penatagunaan lahan di lakukan dengan menggunakan alat mekanis Excavator Kobelco SK200, Bulldozer Komatsu D85E-SS dan Dumptruck Hino 500-FM260TI dengan kebutuhan material pemadatan topsoil 131.700 LCM dan overburden 439.000 LCM. Kemudian tahapan revegetasi menggunakan tanaman pokok berupa pohon akasia (acacia mangium), tanaman sisipan berupa pohon ","PeriodicalId":187584,"journal":{"name":"Bandung Conference Series: Mining Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121143089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-28DOI: 10.29313/bcsme.v3i1.5692
Aristu Eka Adrian, Elfida Moralista, Zaenal
Abstract. Conveyors structure made from carbon steel are susceptible to corrosion which will reduce the quality of the material. The corrosion that occurs will affect the Remaining Service Life on the conveyor structure. Therefore, the purpose of this research is to determine the type of corrosion, corrosion control that is applied to the conveyor structure, the value of Corrosion Rate and Remaining Service Life.The measurement methodology for the 142 meter long conveyor structure consisting of 4 segments with 32 test points was carried out based on the thickness reduction method. Measurement of the actual thickness of the conveyor structure was carried out using an Ultrasonic Thickness Gauge TT 130. In this study, observations of environmental conditions in 2016-2020 showed that the average air temperature data was 25.34oC, average rainfall was 209.97 mm/year and 86.92% relative humidity. The type of corrosion that occurs on the conveyor structure is uniform corrosion. The corrosion control method applied to the conveyor structure is the coating method with a three-layer system using Seaguard 5000 primer coating, Sherglass FF intermediate coating, and Aliphatic acrylic modified polyurethane top coating. Based on data on reducing the thickness of the conveyor structure with values ranging from 1.31-2.35 mm, a Corrosion Rate is obtained with a value of 0.1871-0.3357 mm/year, based on the table of relative corrosion resistance of steel this value is included in the good category. The service life of the conveyor structure is 7 years with a Remaining Service Life value ranging from 6.58-9.01 years. Therefore there are 14 or 43.75% of the 32 test points which are predicted not to reach the design life of 15 years. Abstrak. Struktur Conveyor berbahan dasar baja karbon rentan mengalami terjadinya korosi yang akan mengurangi kualitas material.. Korosi yang terjadi akan berpengaruh terhadap Remaining Service Life pada struktur conveyor. Maka dari itu tujuan dilakukannya penelitian ini untuk mengetahui jenis korosi, pengendalian korosi yang diaplikasikan pada struktur conveyor, nilai Corrosion Rate dan Remaining Service Life. Metodologi pengukuran pada struktur conveyor sepanjang 142 meter yang terdiri dari 4 segmen dengan 32 test point dilakukan berdasarkan metode pengurangan ketebalan. Pengukuran tebal aktual struktur conveyor dilakukan dengan menggunakan alat Ultrasonic Thickness Gauge TT 130. Pada penelitian ini, pengamatan kondisi lingkungan pada tahun 2016-2020 menunjukan bahwa data temperatur udara rata-rata 25,34oC, curah hujan rata-rata 209,97 mm/tahun dan kelembapan relatif 86,92%. Jenis korosi yang terjadi pada struktur conveyor yaitu korosi merata. Metode pengendalian korosi yang diaplikasikan pada struktur conveyor yaitu metode coating dengan sistem three layer system menggunakan primer coating Seaguard 5000, intermediate coating Sherglass FF, dan top coating Aliphatic acrylic modified polyurethane. Berdasarkan dat
摘要。由碳钢制成的输送机结构容易受到腐蚀，这将降低材料的质量。所发生的腐蚀将影响输送机结构的剩余使用寿命。因此，本研究的目的是确定腐蚀类型，适用于输送机结构的腐蚀控制，腐蚀速率和剩余使用寿命的值。针对由4段、32个测试点组成的142 m长输送机结构，采用减厚法进行了测量方法研究。采用超声波测厚仪tt130对输送机结构的实际厚度进行了测量。本研究2016-2020年的环境条件观测结果显示，平均气温为25.34oC，平均降雨量为209.97 mm/年，相对湿度为86.92%。发生在输送机结构上的腐蚀类型为均匀腐蚀。输送机结构采用的腐蚀控制方法是采用Seaguard 5000底漆、Sherglass FF中间漆、脂族丙烯酸改性聚氨酯面漆三层体系的涂覆方法。根据减少输送机结构厚度1.31-2.35 mm的数据，得到腐蚀速率为0.1871-0.3357 mm/年，根据钢的相对耐蚀性表，该值属于良好类别。输送机结构使用寿命为7年，剩余使用寿命值为6.58-9.01年。因此，在32个测试点中，有14个或43.75%的测试点预计无法达到15年的设计寿命。Abstrak。结构输送机berbahan dasar baja碳rentan mengalami terjadinya korosi yang akan mengurangi kualitas材料。Korosi yang terjadi akan berpengaruh terhadap剩余使用寿命板式结构输送机。Maka dari itu tujuan dilakukannya penelitian ini untuk mengetahui jenis korosi, pengen大连korosi yang diapplikasikan padada结构输送机，nilai腐蚀速率和剩余使用寿命。方法企鹅帕达结构输送机sepanjang 142米阳terdiri dari 4段登岸32测试点dilakukan berdasarkan方法pengurangan ketebalan。企鹅实际结构输送机迪拉坎登安蒙古纳坎alat超声波测厚仪tt130。Pada penelitian ini, pengamatan kondisi lingkungan Pada tahun 2016-2020 menunjukan bahwa数据温度udara -rata 25,34 oc, curah hujan rata 209,97 mm/tahun dan kelembapan相对86,92%。Jenis korosi yang terjadi pada结构输送机yitu korosi merata。Metode pengendalian korosi yang diaplikasikan paada structure conveyor yitu Metode coating dengan system三层体系menggunakan底漆Seaguard 5000，中间涂料Sherglass FF，丹面涂料脂族丙烯酸改性聚氨酯。Berdasarkan数据pengurangan ketebalan结构输送机dengan nilai berkisar antara 1,31-2,35 mm, didapatkan腐蚀速率dengan nilai 0,1871-0,3357 mm/tahun, Berdasarkan tabel ketahanan korosi相对于baja nilai tersebut termasuk ke dalam kategori好。乌木尔pakai结构输送机7 tahun登干nilai剩余使用寿命berkisar antara 6,58-9,01 tahun。Oleh karena itu terdapat 14 atat43,75% dari 32测试点diprediksi titaak dapat mapai umur desainnya yaitu15 tahun。
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Pub Date : 2023-01-28DOI: 10.29313/bcsme.v3i1.5713
Wahyu Guntoro, Sri Widayati, Dudi Nasrudin Usman
Abstract. Based on the Decree of the Minister of Environment and Forestry No. 5 of 2022 concerning Wastewater Treatment for Mining Businesses or Activities related to acid mine water treatment, the water must be handled so that the water quality becomes neutral and meets the specified quality standards. The research was conducted by taking some data in the form of quality and discharge of acid mine drainage to be tested in the laboratory in order to obtain the values of pH, TSS, and chemical elements. Analysis of the calculation of the molarity of acid mine drainage and neutralizing agent (quicklime) was carried out to determine the mixing dose, which aims to neutralize acid mine water properly. Analysis results show that the actual neutralization of acid mine drainage requires 0.148 g/liter with an average daily requirement of 10.710,3535 gr or 16,551 kg. The most appropriate treatment is carried out with an active curative approach by direct sprinkling quicklime into the inlet channel so that it can be mixed more evenly when it enters the settling pond. Abstrak. Berdasarkan kepada Keputusan Menteri Lingungan Hidup dan Kehutanan No 5 Tahun 2022 tentang Pengolahan Air Limbah Bagi Usaha Dan/Atau Kegiatan Pertambangan dengan yang berkaitan dengan pengolahan air asam tambang, maka air tersebut harus dilakukan penanganan agar kualitas air menjadi netral dan memenuhi baku mutu yang telah ditentukan. Penelitian ini dilakukan dengan metode pengambilan beberapa data berupa kualitas dan debit air asam tambang untuk diuji laboratorium agar mendapatkan nilai pH, TSS, dan unsur kimiawi. Analisis perhitungan molaritas air asam tambang dan agen penetral (kapur tohor) dilakukan untuk mengetahui dosis pencampuran, yang bertujuan agar air asam tambang dapat dinetralkan dengan tepat. Hasil analisis menunjukan bahwa penetralan air asam tambang secara aktual membutuhkan 0,148 gr/liter dengan kebutuhan rata- rata perhari sebesar 169.551,242 gr atau 169,551 kg. Penanggulangan paling tepat dilakukan dengan pendekatan kuratif metode aktif, dengan cara menaburkan langsung kapur tohor ke dalam saluran inlet agar dapat tercampur lebih merata ketika masuk ke kolam pengendapan.
摘要根据环境和林业部长关于采矿企业废水处理或与酸性矿山水处理有关的活动的2022年第5号法令，必须对水进行处理，使水质变为中性并符合规定的质量标准。本研究以酸性矿井水的水质和排放量等数据形式，在实验室进行测试，获得pH值、TSS值和化学元素值。通过对酸性矿井水和中和剂(生石灰)的摩尔浓度计算分析，确定了中和剂(生石灰)的混合剂量，以达到对酸性矿井水的合理中和。分析结果表明，酸性矿井水的实际中和需水量为0.148 g/l，日均需水量为10.710、3535 gr或16,551 kg。最合适的处理方法是采用主动治疗方法，直接将生石灰洒入入口通道，以便在进入沉淀池时混合更均匀。Abstrak。马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司，马来西亚航空公司。Penelitian ini dilakukan dengan方法pengambilan beberapa数据berupa kualitas dan debit air asam tambang untuk diuji实验室agar mendapatkan nilai pH, TSS, dan unsur kimiawi。分析perhitungan molaritas air asam tambang danagen penetral (kapur tohor) dilakukan untuk mengetahui dosis pencampuran, yang bertujuan agar air asam tambang dapat dinetralkan dengan tepat。Hasil analysis menunjukan bahwa penetralan air asam tambang secara aktual menbutuhan 0,148克/升dengan kebutuhan rata- rata perhari sebesar 169.551,242克/升169,551公斤。Penanggulangan paling tepat dilakukan dengan pendekatan kuratif方法aktif, dengan cara menaburkan langsung kapur tohor ke dalam saluran入口agar dapat tercampur lebih merata ketika masuk ke kolam pengendapan。
{"title":"Analisis Kebutuhan Kapur Tohor dalam Menetralkan Air Asam Tambang di PT ABC Kalimantan Timur","authors":"Wahyu Guntoro, Sri Widayati, Dudi Nasrudin Usman","doi":"10.29313/bcsme.v3i1.5713","DOIUrl":"https://doi.org/10.29313/bcsme.v3i1.5713","url":null,"abstract":"Abstract. Based on the Decree of the Minister of Environment and Forestry No. 5 of 2022 concerning Wastewater Treatment for Mining Businesses or Activities related to acid mine water treatment, the water must be handled so that the water quality becomes neutral and meets the specified quality standards. The research was conducted by taking some data in the form of quality and discharge of acid mine drainage to be tested in the laboratory in order to obtain the values of pH, TSS, and chemical elements. Analysis of the calculation of the molarity of acid mine drainage and neutralizing agent (quicklime) was carried out to determine the mixing dose, which aims to neutralize acid mine water properly. Analysis results show that the actual neutralization of acid mine drainage requires 0.148 g/liter with an average daily requirement of 10.710,3535 gr or 16,551 kg. The most appropriate treatment is carried out with an active curative approach by direct sprinkling quicklime into the inlet channel so that it can be mixed more evenly when it enters the settling pond. \u0000Abstrak. Berdasarkan kepada Keputusan Menteri Lingungan Hidup dan Kehutanan No 5 Tahun 2022 tentang Pengolahan Air Limbah Bagi Usaha Dan/Atau Kegiatan Pertambangan dengan yang berkaitan dengan pengolahan air asam tambang, maka air tersebut harus dilakukan penanganan agar kualitas air menjadi netral dan memenuhi baku mutu yang telah ditentukan. Penelitian ini dilakukan dengan metode pengambilan beberapa data berupa kualitas dan debit air asam tambang untuk diuji laboratorium agar mendapatkan nilai pH, TSS, dan unsur kimiawi. Analisis perhitungan molaritas air asam tambang dan agen penetral (kapur tohor) dilakukan untuk mengetahui dosis pencampuran, yang bertujuan agar air asam tambang dapat dinetralkan dengan tepat. Hasil analisis menunjukan bahwa penetralan air asam tambang secara aktual membutuhkan 0,148 gr/liter dengan kebutuhan rata- rata perhari sebesar 169.551,242 gr atau 169,551 kg. Penanggulangan paling tepat dilakukan dengan pendekatan kuratif metode aktif, dengan cara menaburkan langsung kapur tohor ke dalam saluran inlet agar dapat tercampur lebih merata ketika masuk ke kolam pengendapan.","PeriodicalId":187584,"journal":{"name":"Bandung Conference Series: Mining Engineering","volume":"03 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129774626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-28DOI: 10.29313/bcsme.v3i1.5617
Sandy Renaldi, Elfida Moralista, Noor Fauzi Isniarno
Abstract. Conveyor is a tool that is applied to the mining industry as a tool that supports the process of moving excavated materials such as coal. The structure of the conveyor is made of steel which is subject to corrosion. The disadvantage of corrosion is that it results in a reduction in the thickness of the conveyor structure. Therefore, it is necessary to control and monitor corrosion on the conveyor structure to be observed, so that corrosion can be controlled. The purpose of this research is to determine the type of corrosion, corrosion rate, remaining service life, and control methods. The methodology used in this research is measuring the thickness reduction of the conveyor structure. This research was conducted on a 128 meter long conveyor structure above ground level. Measurement of the thickness of the conveyor structure using the Ultrasonic Thickness Gauge TT 130 at 32 test points. The environmental conditions in the research area are the air temperature in the range of 24,5°C – 26,1°C, while the rainfall ranges from 5,76 mm/year - 7,88 mm/ year. The type of corrosion that occurs in the conveyor structure is uniform corrosion. In controlling this corrosion using a coating method with Seaguard 5000 primer coating, Sherglass FF intermediate coating, and aliphatic acrylic modified polyurethane top coating. The corrosion rate of the conveyor structure ranges from 0.17 - 0.30 mm/year which is included in the good category based on the relative corrosion resistance of steel. Meanwhile, the remaining service life of the conveyor structure ranges from 7,24 - 9,63 years. The service life of the conveyor structure is 8 years, while the design life is 15 years. So it is predicted that 100% can reach its the design life. Abstrak. Conveyor adalah alat yang diaplikasikan pada industri pertambangan sebagai alat yang menunjang dalam proses pemindahan material bahan galian contohnya batubara. Struktur conveyor terbuat dari baja karbon yang dapat mengalami korosi. Kerugian terjadinya korosi yaitu mengakibatkan pengurangan ketebalan struktur conveyor. Oleh karena itu, perlu dilakukannya pengendalian serta monitoring korosi pada struktur conveyor, sehingga korosi dapat dikendalikan. Tujuan dilakukannya penelitian ini untuk mengetahui jenis korosi, laju korosi, sisa umur pakai, dan metoda pengendaliannya. Metodologi yang digunakan dalam penelitian ini yaitu pengukuran pengurangan ketebalan struktur conveyor. Penelitian ini dilakukan pada struktur conveyor sepanjang 128 meter yang berada di atas permukaan tanah. Pengukuran ketebalan struktur conveyor menggunakan alat Ultrasonic Thickness Gauge TT 130 pada 32 test point. Kondisi lingkungan di daerah penelitian yaitu temperatur udara kisaran 24,5°C - 26,1°C, sedangkan curah hujan kisaran 5,76 mm/tahun - 7,88 mm/tahun Jenis korosi yang terjadi pada struktur conveyor adalah korosi merata. Dalam pengendalian korosi ini menggunakan metoda coating dengan primer coating Seaguard 5000, intermediate coating Sherg
摘要。输送机是一种应用于采矿业的工具，它是一种支持移动挖掘材料(如煤)过程的工具。输送机的结构由易腐蚀的钢材制成。腐蚀的缺点是它会导致输送机结构厚度的减少。因此，有必要对待观察输送机结构上的腐蚀进行控制和监测，以便对腐蚀进行控制。本研究的目的是确定腐蚀类型、腐蚀速率、剩余使用寿命和控制方法。本研究中使用的方法是测量输送机结构的厚度减少。本研究是在一个128米长的地面上的输送机结构上进行的。使用超声波测厚仪TT 130在32个测试点测量输送机结构的厚度。研究区环境条件为气温24.5℃~ 26.1℃，降雨量5.76 mm/年~ 7.88 mm/年。输送机结构中发生的腐蚀类型为均匀腐蚀。采用Seaguard 5000底漆、Sherglass FF中间漆和脂肪族丙烯酸改性聚氨酯面漆的涂覆方法来控制这种腐蚀。输送机结构的腐蚀速率为0.17 - 0.30 mm/年，根据钢材的相对耐腐蚀性，属于良好类别。同时，输送机结构的剩余使用寿命为7,24 ~ 9,63年。输送机结构使用寿命为8年，设计寿命为15年。因此预测其100%能达到设计寿命。Abstrak。输送机adalah alat yang diaplikasikan padada industrii pertambangan sebagai alat yang menunjang dalam加工pmindahan物料bahan galian contohnya batubara。strukturr输送带terbuterdari baja karbon yang dapat mengalami korosi。Kerugian terjadinya korosi yitu mengakibatkan pengurangan ketebalan结构输送机。Oleh karena itu, perlu dilakukannya pengendalian，监测korosi patat结构输送机，sehinga korosi patat dikendalikan。Tujuan dilakukannya penelitian ini untuk mengetahui jenis korosi, laju korosi, sisa umur pakai, dan metoda pengendaliannya。方法学杨迪古那坎dalam penelitian ini yitu企鹅kuran pengurangan ketebalan构造输送机。Penelitian ini dilakukan pada结构输送机sepanjang 128米yang berada di数据permukaan tanah。企鹅ketebalan结构输送机蒙古纳坎alat超声波测厚仪TT 130 pad32测试点。Kondisi lingkungan di daerah penelitian yitu温度udara kisaran 24,5°C - 26,1°C, sedangkan curah hujan kisaran 5,76 mm/tahun - 7,88 mm/tahun Jenis korosi yang terjadi pada结构输送机adalah korosi merata。大连大连科罗西尼蒙古纳坎中土涂料丹安底漆Seaguard 5000，中间涂料Sherglass FF，丹面涂料脂族丙烯酸改性聚氨酯。拉ju korosi结构输送机berkisar antara 0,17 - 0,30 mm/tahun termasuk kdalam kategori良好的berdasarkan ketahanan korosi相对baja。山当坎sisa - umur - pakai结构输送带berkisar antara 7,24 - 9,63 tahun。乌木pakai结构输送机yyit8塔hun, sedangkan乌木desainnya 15塔hun。sehinga diprediksi sebesar 100%的patatapapumur desainya。
{"title":"Remaining Service Life Discharge Conveyor E pada Tambang Batubara di PT XYZ Kabupaten Bungo, Provinsi Jambi","authors":"Sandy Renaldi, Elfida Moralista, Noor Fauzi Isniarno","doi":"10.29313/bcsme.v3i1.5617","DOIUrl":"https://doi.org/10.29313/bcsme.v3i1.5617","url":null,"abstract":"Abstract. Conveyor is a tool that is applied to the mining industry as a tool that supports the process of moving excavated materials such as coal. The structure of the conveyor is made of steel which is subject to corrosion. The disadvantage of corrosion is that it results in a reduction in the thickness of the conveyor structure. Therefore, it is necessary to control and monitor corrosion on the conveyor structure to be observed, so that corrosion can be controlled. The purpose of this research is to determine the type of corrosion, corrosion rate, remaining service life, and control methods. The methodology used in this research is measuring the thickness reduction of the conveyor structure. This research was conducted on a 128 meter long conveyor structure above ground level. Measurement of the thickness of the conveyor structure using the Ultrasonic Thickness Gauge TT 130 at 32 test points. The environmental conditions in the research area are the air temperature in the range of 24,5°C – 26,1°C, while the rainfall ranges from 5,76 mm/year - 7,88 mm/ year. The type of corrosion that occurs in the conveyor structure is uniform corrosion. In controlling this corrosion using a coating method with Seaguard 5000 primer coating, Sherglass FF intermediate coating, and aliphatic acrylic modified polyurethane top coating. The corrosion rate of the conveyor structure ranges from 0.17 - 0.30 mm/year which is included in the good category based on the relative corrosion resistance of steel. Meanwhile, the remaining service life of the conveyor structure ranges from 7,24 - 9,63 years. The service life of the conveyor structure is 8 years, while the design life is 15 years. So it is predicted that 100% can reach its the design life. \u0000Abstrak. Conveyor adalah alat yang diaplikasikan pada industri pertambangan sebagai alat yang menunjang dalam proses pemindahan material bahan galian contohnya batubara. Struktur conveyor terbuat dari baja karbon yang dapat mengalami korosi. Kerugian terjadinya korosi yaitu mengakibatkan pengurangan ketebalan struktur conveyor. Oleh karena itu, perlu dilakukannya pengendalian serta monitoring korosi pada struktur conveyor, sehingga korosi dapat dikendalikan. Tujuan dilakukannya penelitian ini untuk mengetahui jenis korosi, laju korosi, sisa umur pakai, dan metoda pengendaliannya. Metodologi yang digunakan dalam penelitian ini yaitu pengukuran pengurangan ketebalan struktur conveyor. Penelitian ini dilakukan pada struktur conveyor sepanjang 128 meter yang berada di atas permukaan tanah. Pengukuran ketebalan struktur conveyor menggunakan alat Ultrasonic Thickness Gauge TT 130 pada 32 test point. Kondisi lingkungan di daerah penelitian yaitu temperatur udara kisaran 24,5°C - 26,1°C, sedangkan curah hujan kisaran 5,76 mm/tahun - 7,88 mm/tahun Jenis korosi yang terjadi pada struktur conveyor adalah korosi merata. Dalam pengendalian korosi ini menggunakan metoda coating dengan primer coating Seaguard 5000, intermediate coating Sherg","PeriodicalId":187584,"journal":{"name":"Bandung Conference Series: Mining Engineering","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121319664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-28DOI: 10.29313/bcsme.v3i1.5486
Muhamad Awaludin, Iswandaru, Noor Fauzi Isniarno
Abstract. PT Nunukan Bara Santosa Satu (NBSS) is a private company owned by Medco Minning with commodities that produce coal, mining, processing and further marketing of coal commodities located in Sebakis Village, Nunukan District, Nunukan Regency, North Kalimantan Province, to support the mining process, at the Ambu site using a means of transportation with the Sany SKT 90 Dump Truck type with a Sany 750H digging tool, with the open pit open pit mining method, so that in all mining activities there are factors that are difficult to avoid, namely the weather, if it rains it will result in The cessation of production was due to the condition of the road being still soiled and the handling of the slipperly still lacking units, but this can be covered by sunny weather conditions. For this reason, this study has the aim of being able to analyze fleet macth for optimum productivity by minimizing obstacles that occur such as hauling roads that are not standardized by the Ministerial Decree No. 1827/K/30/MEM/2018, slipperly handling, road maintenance, front maintenance, truck queue which results in high cycle times that occur.The percentage of achievement of the productivity target based on the planned overburden stripping in July was 545,669 Bcm. Meanwhile, based on the actual results, only 222,276 BCM. The result is less than half of the plan that has been targeted. One of the causes of not achieving the production target is in the location preparation mechanism, lack of supervision, the number of breakdown units, the effect of site preparation and the effect of the compatibility of the number of equipment.From the observations in the field and the calculation of the compatibility factor between the excavator and the dumptruck, it was found that the MF result was 0.94 < 1, meaning that the excavator loading equipment worked less than 100% while the dumptruck transportation equipment worked 100%, so there was a waiting time for the loading equipment. Thus, if optimization is carried out on the effective work of the tool, evaluation of working hours and selection of healthy units can increase production results so that targets can be met. Abstrak. PT Nunukan Bara Santosa Satu (NBSS) adalah badan usaha swasta milik Medco Minning dengan komoditas yang penghasil batubara, kegiatan penambangan, pengolahan serta lebih lanjut melakukan pemasaran dari komoditas batubara yang terletak di Desa Sebakis, Kecamatan Nunukan, Kabupaten Nunukan, Provinsi Kalimantan Utara, untuk menunjang proses penambangan, pada site Ambu menggunakan alat angkut dengan jenis Dump Truck Sany SKT 90 dengan alat gali muat Sany 750H, dengan metode tambang terbuka open pit, sehingga dalam seluruh kegiatan penambangan terdapat faktor yang sulit untuk dihindari yaitu cuaca, jika terjadinya hujan akan mengakibatkan berhentinya produksi dikarenakan dengan kondisi jalan yang masih tanah serta dalam penanganan sliperly nya masih kekurangan unit, akan tetapi hal tersebut bisa ditutupi dengan ko
摘要。PT Nunukan Bara Santosa Satu (NBSS)是一家由Medco mining拥有的私营公司，位于北加里曼丹省Nunukan县Sebakis村，生产煤炭，开采，加工和进一步销售煤炭商品，以支持采矿过程，在Ambu现场使用三一SKT 90自卸卡车类型的运输工具和三一750H挖掘工具，采用露天露天采矿方法。所以在所有的采矿活动中都有难以避免的因素，那就是天气，如果下雨的话就会导致生产的停止，原因是道路的状况仍然很脏，处理的滑溜仍然缺乏单位，但这可以由晴朗的天气条件来掩盖。出于这个原因，本研究的目的是通过最大限度地减少发生的障碍来分析车队的最佳生产率，例如运输道路未按第1827/K/30/MEM/2018号部长法令进行标准化，滑处理，道路维护，前部维护，卡车排队导致高周期时间发生。根据7月份计划的覆岩剥离，产能目标完成率为545,669亿立方米。同时，根据实际结果，只有222,276 BCM。结果还不到计划目标的一半。未能达到生产目标的原因之一是在现场准备机制上，缺乏监督，故障单元数量，现场准备效果和设备数量兼容性的影响。通过现场观察和对挖掘机与自卸车兼容系数的计算，发现MF结果为0.94 < 1，即挖掘机装载设备工作不到100%，而自卸车运输设备工作100%，因此装载设备存在等待时间。因此，如果对刀具的有效工作进行优化，工时评估和健康单元的选择可以提高生产效果，从而达到目标。Abstrak。PT Nunukan Bara Santosa Satu (NBSS) adalah badan usha swasta milik Medco mining dengan komoditas yang penghasil batubara, kegiatan penambangan, pengolahan serta lebih lanjut melakan pemasaran dari komoditas batubara yang terletak di Desa Sebakis, Kecamatan Nunukan, Kabupaten Nunukan，省加里曼丹Utara, untuk menunjang proses penambangan, pada site Ambu menggunakan alat angkut dengan jenis自卸卡车Sany SKT 90 dengan alat gali muat Sany 750H, dengan metde tambang terbuka露天矿，sehinga dalam seluruh kegiatan penambangan cuaca Yang sulit untuk dihindari yitu cuaca, jika terjadinya hujan akan mengakibatkan berhentinya produksi dikarenakan dengan kondisi jalan Yang masih tanah serta dalam penanganan slisliy nya masih kekurangan unit, akan tetapi Hal tersebut bisa ditutupi dengan kondisi cuaca Yang cerah。Untuk itu penelitian ini memoriliki tujuan agar dapat menganalisa车队machth Untuk生产率yang optimum dengan memimimalisir hambatan yang terjadi seperti jalan拖运yang kurang标准dengan perturan kemmen No.1827/K/30/MEM/2018, penanganan滑，道路养护，前方养护，卡车队列yang mengakibatkan tingginya周期时间yang terjadi。企鹅目标生产活动berdasarkan rencana pengupasan lapisan tanah penutup (Overburden) padbulan Juli sebesar 5456.69 Bcm。Sedangkan berdasarkan hasil aktualnya hanya sebesar 222.276 BCM。Hasil tersebut kurang dari setengahnya dari rencana yang telah ditargetkan。Penyebab tidak tercapainya target producksi salah satunya yitam dalam mekanisme penyiapan lokasi, kurangnya pengawasan, banyaknya unit yang breakdown, pengaruh penyiapan lokasi dan pengaruh keserasian jumlah alat。Dari hasil pengamatan di lapangan dan hasil perhitungan fakerasian antara挖掘机和自卸车didapat bahwa hasil MF sebesar 0,94 < 1, artinya alatmuat挖掘机bekerja kurang Dari 100% sedangkan alatangkut自卸车bekerja 100%， sehinga terdapat waktu tungu bagi alatmuat。邓安demikian jika dilakukan optimasi terhadap kerja efektif alattersebut，评价jam kerja和pemilihan单位yang seat meningkatkan hasil产品duksi sehinga目标dapat terpenuhi。
{"title":"Analisa Keserasian Armada untuk Mencapai Produksi Armada yang Optimum di PT Nunukan Bara Sentosa Satu, Desa Sebakis, Kecamatan Nunukan, Kabupaten Nunukan, Provinsi Kalimantan Utara","authors":"Muhamad Awaludin, Iswandaru, Noor Fauzi Isniarno","doi":"10.29313/bcsme.v3i1.5486","DOIUrl":"https://doi.org/10.29313/bcsme.v3i1.5486","url":null,"abstract":"Abstract. PT Nunukan Bara Santosa Satu (NBSS) is a private company owned by Medco Minning with commodities that produce coal, mining, processing and further marketing of coal commodities located in Sebakis Village, Nunukan District, Nunukan Regency, North Kalimantan Province, to support the mining process, at the Ambu site using a means of transportation with the Sany SKT 90 Dump Truck type with a Sany 750H digging tool, with the open pit open pit mining method, so that in all mining activities there are factors that are difficult to avoid, namely the weather, if it rains it will result in The cessation of production was due to the condition of the road being still soiled and the handling of the slipperly still lacking units, but this can be covered by sunny weather conditions. For this reason, this study has the aim of being able to analyze fleet macth for optimum productivity by minimizing obstacles that occur such as hauling roads that are not standardized by the Ministerial Decree No. 1827/K/30/MEM/2018, slipperly handling, road maintenance, front maintenance, truck queue which results in high cycle times that occur.The percentage of achievement of the productivity target based on the planned overburden stripping in July was 545,669 Bcm. Meanwhile, based on the actual results, only 222,276 BCM. The result is less than half of the plan that has been targeted. One of the causes of not achieving the production target is in the location preparation mechanism, lack of supervision, the number of breakdown units, the effect of site preparation and the effect of the compatibility of the number of equipment.From the observations in the field and the calculation of the compatibility factor between the excavator and the dumptruck, it was found that the MF result was 0.94 < 1, meaning that the excavator loading equipment worked less than 100% while the dumptruck transportation equipment worked 100%, so there was a waiting time for the loading equipment. Thus, if optimization is carried out on the effective work of the tool, evaluation of working hours and selection of healthy units can increase production results so that targets can be met. \u0000Abstrak. PT Nunukan Bara Santosa Satu (NBSS) adalah badan usaha swasta milik Medco Minning dengan komoditas yang penghasil batubara, kegiatan penambangan, pengolahan serta lebih lanjut melakukan pemasaran dari komoditas batubara yang terletak di Desa Sebakis, Kecamatan Nunukan, Kabupaten Nunukan, Provinsi Kalimantan Utara, untuk menunjang proses penambangan, pada site Ambu menggunakan alat angkut dengan jenis Dump Truck Sany SKT 90 dengan alat gali muat Sany 750H, dengan metode tambang terbuka open pit, sehingga dalam seluruh kegiatan penambangan terdapat faktor yang sulit untuk dihindari yaitu cuaca, jika terjadinya hujan akan mengakibatkan berhentinya produksi dikarenakan dengan kondisi jalan yang masih tanah serta dalam penanganan sliperly nya masih kekurangan unit, akan tetapi hal tersebut bisa ditutupi dengan ko","PeriodicalId":187584,"journal":{"name":"Bandung Conference Series: Mining Engineering","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121630121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-28DOI: 10.29313/bcsme.v3i1.5207
Kevin Zen Rizal Pratama, Zaenal, Indra Karna Wijaksana
Abstract. PT Akarna Marindo is one of the companies engaged in mining with the commodity of limestone in Cipatat Village, Cipatat District, West Bandung Regency, West Java Province. It is necessary to carry out an analysis of the investment and economic feasibility of the mine to fulfill one of the requirements in extending the ongoing mining business permit. The economic analysis used is based on production costs, investment costs, cash flow and income from the sale of limestone. Considering this, an economic analysis is carried out based on the concept of Discontinued Cash Flow Rate of Return (DCFROR) and sensitivity analysis. The economic criteria used are Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period (PBP), as well as sensitivity analysis of selling prices and production costs. DCFROR analysis is one of the analytical techniques related to investment, by calculating the value of money against the discount rate using the Weighted Average Cost of Capital (WACC) method which is 8.00%. Then the cash flow calculation is carried out every year to evaluate the cash value based on cash inflows and cash disbursements generated during mining activities. The results of the DCFROR analysis that has been carried out, obtained an NPV value of IDR 5,011,899,460, -, an IRR of 18.60% and a PBP for 3 years and 6 months. It is necessary to evaluate the value of investment uncertainty by determining the level of profit obtained based on changes in various sensitivity parameters. The parameters used in this analysis are selling prices and production costs to the NPV value due to changes in selling prices and production costs. The results of the sensitivity analysis show that selling prices have decreased by more than 8% and production costs have increased by more than 22%. Abstrak. PT Akarna Marindo merupakan salah satu perusahaan yang bergerak dalam bidang pertambangan dengan komoditi batu gamping di Desa Cipatat, Kecamatan Cipatat, Kabupaten Bandung Barat, Provinsi Jawa Barat. Perlu dilakukan analisis investasi dan kelayakan ekonomi tambang untuk memenuhi salah satu syarat dalam memperpanjang izin usaha penambangan yang sedang berlangsung. Analisis ekonomi yang digunakan berdasar pada biaya produksi, biaya investasi, aliran kas dan pendapatan dari penjualan batu gamping. Mempertimbangkan hal tersebut, maka dilakukan analisis ekonomi berdasarkan pada konsep Discontinued Cash Flow Rate of Return (DCFROR) dan analisis sensitivitas. Kriteria ekonomi yang digunakan adalah Net Present Value (NPV), Internal Rate of Return (IRR), Payback Periode (PBP), serta analisis sensitivitas terhadap harga jual dan biaya produksi. Analisis DCFROR menjadi salah satu teknik analisis yang berhubungan dengan investasi, menghitung nilai uang terhadap discount rate menggunakan metode Weighted Average Cost of Capital (WACC) yang didapat sebesar 8,00%. Kemudian perhitungan aliran kas dilakukan setiap tahun untuk mengevaluasi nilai kas berdasar pada pemasukan kas
摘要。PT Akarna Marindo是西爪哇省西万隆县西帕塔区西帕塔村从事石灰石商品开采的公司之一。有必要对矿山的投资和经济可行性进行分析，以满足延长正在进行的采矿经营许可证的要求之一。所使用的经济分析是基于生产成本、投资成本、现金流和销售石灰石的收入。考虑到这一点，本文基于终止现金流收益率(DCFROR)的概念和敏感性分析进行了经济分析。使用的经济标准是净现值(NPV)、内部收益率(IRR)、投资回收期(PBP)以及销售价格和生产成本的敏感性分析。DCFROR分析是一种与投资相关的分析技术，通过使用加权平均资本成本(WACC)方法计算货币价值与贴现率，该方法为8.00%。然后每年进行现金流量计算，根据采矿活动期间产生的现金流入和现金支付来评估现金价值。dcfro分析结果显示，NPV值为5,011,899,460印尼盾，IRR为18.60%，PBP为3年零6个月。有必要通过确定根据各种敏感性参数的变化所获得的利润水平来评估投资不确定性的价值。本分析中使用的参数是由于销售价格和生产成本的变化而产生的NPV值的销售价格和生产成本。敏感性分析结果表明，销售价格下降了8%以上，生产成本增加了22%以上。Abstrak。PT Akarna Marindo merupakan salah satu perusahaan yang bergerak dalam bidang pertambangan dengan komoditi batu gamping di Desa Cipatat, Kecamatan Cipatat, Kabupaten万隆Barat，爪哇巴拉省。Perlu dilakukan分析，投资，但kelayakan经济，但bang untuk memuhi, salah, salah, dalam成员，panjang izin, usaha penambangan yang sedang berlangsung。分析经济杨狄古纳坎伯达尔达比亚比亚生产，比亚比亚投资，阿里兰卡达尔达尔达尔达尼亚巴图赌博。本研究采用停止现金流报报率(DCFROR)和敏感性分析方法。标准经济指标:净现值(NPV)、内部收益率(IRR)、投资回收期(PBP)、数据分析敏感性等。分析dfror menjadi salah satu teknik分析杨伯伯胡布根登根投资，孟山纳坎法加权平均资本成本(WACC)杨伯伦sebesar贴现率8,00%。Kemudian perhitungan aliran kas dilakukan settang untuk mengevaluis nilai kas berdasar pasmasukan kas danpeneluaran kas yang dihasilkan selama kegiatan penambangan。Hasil - dari分析DCFROR yang telah dilakukan, didapat nilai NPV sebesar Rp 5.011.899.460，。IRR sebesar 18,60%， PBP selama 3 tahun 6 bulan。Perlu dilakukan评价方法，对该方法进行了评价，对该方法进行了分析，对keuntunan yang进行了分析，对该方法进行了参数敏感性分析。参数yang digunakan berupa harga jual dan biaya products terhadap nilai NPV akibat perubahan harga jual dan biaya products。Hasil - dari分析敏感性为:adalah harga jual mengalami penurunan数据为8%，biaya produksi mengalami kenaikan数据为22%。
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