T. Yushina, Van Trong Nguyen, A. M. Dumov, Thu Thuy Nguyen
{"title":"Technology for processing quartz–sericite ore by selective grinding and flotation","authors":"T. Yushina, Van Trong Nguyen, A. M. Dumov, Thu Thuy Nguyen","doi":"10.17580/em.2022.02.11","DOIUrl":"https://doi.org/10.17580/em.2022.02.11","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45225304","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}
A. Lyakhomskii, A. Petrochenkov, S. Petukhov, E. N. Perfileva
{"title":"Consulting on energy management systems in mining industry","authors":"A. Lyakhomskii, A. Petrochenkov, S. Petukhov, E. N. Perfileva","doi":"10.17580/em.2022.02.07","DOIUrl":"https://doi.org/10.17580/em.2022.02.07","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45859726","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}
S. Epshtein, E. E. Sokolovskaya, N. Dobryakova, J. Hao
{"title":"Development of potentiometric titration method for assessing coals’ oxidation degree","authors":"S. Epshtein, E. E. Sokolovskaya, N. Dobryakova, J. Hao","doi":"10.17580/em.2022.02.20","DOIUrl":"https://doi.org/10.17580/em.2022.02.20","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44130947","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}
V. Tyupin, E. B. Yanitsky, A. E. Polyakh, I. Ignatenko
{"title":"Seismically safe parameters of confined blasting in levelling dry dock bottom","authors":"V. Tyupin, E. B. Yanitsky, A. E. Polyakh, I. Ignatenko","doi":"10.17580/em.2022.02.04","DOIUrl":"https://doi.org/10.17580/em.2022.02.04","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46650299","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}
P. Loginov, E. N. Avdeenko, O. S. Manakova, E. Levashov
{"title":"Performance of diamond circular saws with innovative Fe-based binders","authors":"P. Loginov, E. N. Avdeenko, O. S. Manakova, E. Levashov","doi":"10.17580/em.2022.02.15","DOIUrl":"https://doi.org/10.17580/em.2022.02.15","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43399483","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}
Y. S. Oryngozhin, M. Bitimbaev, N. A. Milеtenko, Z. Alisheva
{"title":"An innovative way of underground mining","authors":"Y. S. Oryngozhin, M. Bitimbaev, N. A. Milеtenko, Z. Alisheva","doi":"10.17580/em.2022.01.07","DOIUrl":"https://doi.org/10.17580/em.2022.01.07","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49102050","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}
{"title":"Influence of ore processing behavior on heap-leach cyanidation and agitation leaching efficiency","authors":"P. Fedotov, A. Senchenko, K. Fedotov, A. Burdonov","doi":"10.17580/em.2022.01.11","DOIUrl":"https://doi.org/10.17580/em.2022.01.11","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44904649","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}
of rocks and artificial composites is carried out in various ways. One of the most common methods is the impact fracture. The conical pick of JCB HM380 hydraulic breaker was used as the impact tool. The experimental study of rock fracture was carried out on an artificial composite—concrete. The depth of penetration of the pick into concrete was used as the test parameter. The model was based on the model of Professor V. B. Sokolinsky. The model developed in this work takes into account the degree of bluntness of the tool in single and multiple impact. The system was considered as a two-component system due to the high stiffness of the pick–granite contact (as against the hammer piston–pick stiffness). The wave processes in the pick were disregarded because of the small length of the pick. The pick penetration depth in rocks was calculated theoretically, using the developed mathematical model, at each impact of the pick, and then was compared with the experimental data. The fracture tests also used JCB HM380 breaker and concrete. The penetration depth was determined from the step-frame analysis of video filming of the process. It is found that the pick blunting causes a monotonic increase in the rock resistance to the pick penetration, both in single and multiple impact, while the depth of the tool penetration and the blow time decrease (as compared with the initial state of the tool, by 28% and 20%, respectively).
人造岩石和复合材料以各种方式进行。其中最常用的方法是冲击断裂。采用JCB HM380型液压破碎机的锥镐作为冲击工具。在人工复合混凝土上进行了岩石断裂试验研究。以镐入混凝土的深度作为试验参数。这个模型是基于V. B. Sokolinsky教授的模型。在这项工作中开发的模型考虑了工具在单次和多次撞击中的钝化程度。由于镐-花岗岩接触的高刚度(相对于锤活塞-镐的刚度)，该系统被认为是一个双组分系统。由于镐的长度较小，因此忽略了镐中的波浪过程。利用所建立的数学模型，从理论上计算了镐在每次冲击时在岩石中的侵彻深度，并与实验数据进行了比较。断裂试验还采用了JCB HM380破碎机和混凝土。通过对该工艺录像的步进分析，确定了渗透深度。研究发现，在单次和多次冲击中，镐的钝化导致岩石对镐的阻力单调增加，而刀具的穿透深度和击打时间则减少(与刀具初始状态相比，分别减少28%和20%)。
{"title":"Modeling impact fracture of rock by hydraulic hammer pick with regard to its bluntness","authors":"V. Bolobov, S. Chupin, Le-Thanh B.","doi":"10.17580/em.2022.01.15","DOIUrl":"https://doi.org/10.17580/em.2022.01.15","url":null,"abstract":"of rocks and artificial composites is carried out in various ways. One of the most common methods is the impact fracture. The conical pick of JCB HM380 hydraulic breaker was used as the impact tool. The experimental study of rock fracture was carried out on an artificial composite—concrete. The depth of penetration of the pick into concrete was used as the test parameter. The model was based on the model of Professor V. B. Sokolinsky. The model developed in this work takes into account the degree of bluntness of the tool in single and multiple impact. The system was considered as a two-component system due to the high stiffness of the pick–granite contact (as against the hammer piston–pick stiffness). The wave processes in the pick were disregarded because of the small length of the pick. The pick penetration depth in rocks was calculated theoretically, using the developed mathematical model, at each impact of the pick, and then was compared with the experimental data. The fracture tests also used JCB HM380 breaker and concrete. The penetration depth was determined from the step-frame analysis of video filming of the process. It is found that the pick blunting causes a monotonic increase in the rock resistance to the pick penetration, both in single and multiple impact, while the depth of the tool penetration and the blow time decrease (as compared with the initial state of the tool, by 28% and 20%, respectively).","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42227845","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}
V. Chanturiya, I. Bunin, M. Ryazantseva, I. Khabarova
{"title":"Effect of high-power electromagnetic pulses and dielectric barrier discharges on physicochemical and flotation properties of perovskite","authors":"V. Chanturiya, I. Bunin, M. Ryazantseva, I. Khabarova","doi":"10.17580/em.2022.01.09","DOIUrl":"https://doi.org/10.17580/em.2022.01.09","url":null,"abstract":"","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46884652","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}
R. Muminov, D. Kuziev, V. V. Zotov, E. S. Sazankova
reliability improvement of drill rig model SBSH-250MNA-32. The article describes the studies in the field of mining machines and the relevant engineering solutions. It is critical for Russia to preserve and replenish its mineral resources and mineral reserves to pursue social and economic advance. The priority growth of coal and gold production using the advanced open pit mining method can increase percentage of the latter in cumulative mineral mining by not less than 50%. Furthermore, it is necessary to cut down costs of production by 4–5%. The main and extremely labor consuming process in open pits in Russia is drilling which takes up to 40% of total mining cost [1–3]. The common method of drilling in rocks with the hardness factor of 6–20 on Proto-dyakonov’s scale in Russia is the roller-bit drilling [4–6]. This drilling processes is accom-panied with high dynamic loading imposed on the rotary-and-feed mechanism [7–9]. One of the ways of reducing dynamic loads in the roller-bit drill rigs is redesigning of the rotary-and-feed mechanism to possess higher safety and anti-vibration properties, simpler structure, as well as better performability and longevity [7, 8, 10–13]. This article describes and substantiates the design and operating principle of the electro-hydro-mechanical rotary head, its prototype testing, the research program and procedure, the instrumentation preparation, the research objective as well as the test data processing and analysis as a case-study of drill rig model SBSH-250MNA-32. three-level active rectifier, which ensure the standard quality power supply in longwall, are substantiated.
{"title":"Performability of electro-hydro-mechanical rotary head of drill rig in open pit mining: A case-study","authors":"R. Muminov, D. Kuziev, V. V. Zotov, E. S. Sazankova","doi":"10.17580/em.2022.01.16","DOIUrl":"https://doi.org/10.17580/em.2022.01.16","url":null,"abstract":"reliability improvement of drill rig model SBSH-250MNA-32. The article describes the studies in the field of mining machines and the relevant engineering solutions. It is critical for Russia to preserve and replenish its mineral resources and mineral reserves to pursue social and economic advance. The priority growth of coal and gold production using the advanced open pit mining method can increase percentage of the latter in cumulative mineral mining by not less than 50%. Furthermore, it is necessary to cut down costs of production by 4–5%. The main and extremely labor consuming process in open pits in Russia is drilling which takes up to 40% of total mining cost [1–3]. The common method of drilling in rocks with the hardness factor of 6–20 on Proto-dyakonov’s scale in Russia is the roller-bit drilling [4–6]. This drilling processes is accom-panied with high dynamic loading imposed on the rotary-and-feed mechanism [7–9]. One of the ways of reducing dynamic loads in the roller-bit drill rigs is redesigning of the rotary-and-feed mechanism to possess higher safety and anti-vibration properties, simpler structure, as well as better performability and longevity [7, 8, 10–13]. This article describes and substantiates the design and operating principle of the electro-hydro-mechanical rotary head, its prototype testing, the research program and procedure, the instrumentation preparation, the research objective as well as the test data processing and analysis as a case-study of drill rig model SBSH-250MNA-32. three-level active rectifier, which ensure the standard quality power supply in longwall, are substantiated.","PeriodicalId":52085,"journal":{"name":"Eurasian Mining","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44691629","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}
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