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Using a particle-based approach (sinter microtypes) for the geometallurgical characterisation of iron ore sinter 使用基于颗粒的方法(烧结矿显微型)对铁矿石烧结矿进行地质冶金表征
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-06-22 DOI: 10.1080/25726641.2022.2088960
M. Peterson, J. Manuel
ABSTRACT The composite microhardness (SCH) and composite fracture toughness (SCFT) of seven sinter samples were calculated utilising the modal proportion of distinct particle textural types, ‘sinter microtypes’ (SM). Ten SM were defined based on phase association, phase texture and particle texture. The SCH/SCFT of each microtype was calculated by defining an idealised composition and utilising the mean microhardness/fracture toughness of different textural forms of common sinter phases. Comparison of SCH and SCFT with sinter metallurgical indices and major element chemistry showed relatively stronger linear correlations with the latter. Modifying the idealised compositions of SM to calculate SCH/SCFT did not notably change correlations with sinter RDI, RI, TI. Calculating SCH/SCFT by weighting the input of SM variably improved correlations with sinter RDI, RI, TI. Providing additional weighting to nuclei/primary phase-bearing SM provided the best correlation with RDI and RI, whereas additional weighting to bonding phase-bearing SM provided the best correlation with TI.
利用不同颗粒织构类型的模态比例,即“烧结矿显微类型”(SM),计算了7种烧结矿样品的复合显微硬度(SCH)和复合断裂韧性(SCFT)。基于相关联、相织构和粒子织构定义了10个SM。每种显微类型的SCH/SCFT是通过定义理想成分和利用不同组织形式的普通烧结相的平均显微硬度/断裂韧性来计算的。将SCH和SCFT与烧结矿的冶金指标和主元素化学指标进行比较,结果表明前者具有较强的线性相关性。修改SM的理想组成来计算SCH/SCFT并没有显著改变与烧结矿RDI, RI, TI的相关性。通过对SM输入进行加权来计算SCH/SCFT,从而可变地改善了与烧结矿RDI、RI、TI的相关性。增加核/原生相SM的权重与RDI和RI的相关性最好,而增加键相SM的权重与TI的相关性最好。
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引用次数: 1
Magnetic spirals: an innovative approach for enhancing the separation of ferro- and para-magnetic particles 磁性螺旋:增强铁磁性和准磁性颗粒分离的创新方法
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-04-08 DOI: 10.1080/25726641.2022.2050490
H. Dehghani, Mohammad Mehdi Salarirad, A. Abdolahzadeh
ABSTRACT Spirals are one of the most widely used beneficiation equipment in mineral processing industry. The prerequisite to improve spirals' performance is to understand the forces that affect valuable and gangue minerals' separation. This paper investigates how magnetic properties of particles can be used to achieve a sharper separation of magnetic and non-magnetic particles in spirals. To this end, separation behavior of a synthetic mixed magnetite and quartz particles in the presence and absence of magnetic field was investigated via analyzing variations in the forces that affect particles’ separation in a spiral. Changes in Zero force line were considered as the reference point in the studies. In this regard an innovative magnetic-spiral was designed and fabricated. A magnetic force was added to separation process of the selected spiral. This, increased fine particles grade and recovery up to 8.5% and 7.5% respectively.
Spirals是选矿行业中应用最广泛的选矿设备之一。提高螺旋体性能的前提是了解影响贵重矿物和脉石矿物分离的力。本文研究了如何利用粒子的磁性来实现螺旋中磁性粒子和非磁性粒子的更清晰分离。为此,通过分析影响颗粒在螺旋中分离的力的变化,研究了合成混合磁铁矿和石英颗粒在存在和不存在磁场的情况下的分离行为。零力线的变化被认为是研究中的参考点。在这方面,设计并制造了一种创新的磁性螺旋。在所选螺旋的分离过程中加入磁力。这样,细颗粒的品位和回收率分别提高到8.5%和7.5%。
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引用次数: 0
Upgrading a Brahmaputra River sand from northern Bangladesh by flotation to produce a high-grade silica glass sand concentrate 通过浮选对孟加拉国北部布拉马普特拉河砂进行升级,生产高级硅玻璃砂精矿
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-02-28 DOI: 10.1080/25726641.2022.2043026
M. Rahman, K. J. Davey, G. Heyes, W. Bruckard, G. Sparrow, M. Pownceby, J. Tardio, Md. Nazim Zaman
ABSTRACT A study into the possible separation of feldspar from quartz in a Bangladesh river sand sample was undertaken with the aim of producing a high-grade quartz product for potential use in glassmaking. Flotation was used to upgrade two river sand concentrates, with sizings of +250 µm and −250 µm, from the Brahmaputra River. Feldspar was floated from quartz using dodecylamine as collector in an acidic circuit at pH 2–2.5 after a mica prefloat. For the −250 µm fraction, the best quality quartz product assayed 96.8 wt% SiO2 and 1.95 wt% Al2O3 with 46.7 wt% of the feed quartz recovered at a quartz content of 89.1 wt% quartz. A test on the +250 µm fraction, which was firstly ground then deslimed at 50 µm before mica and feldspar flotation stages, produced a quartz product assaying 99.5 wt% SiO2 and only 0.3 wt% Al2O3 with a quartz content of 98 wt%.
摘要对孟加拉国河砂样品中长石与石英的可能分离进行了研究,旨在生产一种可用于玻璃制造的高级石英产品。浮选用于升级两个河砂精矿,粒度为+250 µm和−250 µm,来自布拉马普特拉河。在云母预浮后,在pH为2–2.5的酸性回路中,使用十二胺作为捕收剂从石英中悬浮长石。对于−250 µm级分,检测出质量最好的石英产品96.8 SiO2重量百分比和1.95 Al2O3重量百分比46.7 以89.1的石英含量回收的进料石英的wt% 石英重量百分比。对+250的测试 µm级分,首先研磨,然后在50 在云母和长石浮选阶段之前,产生了一种石英产品,含量为99.5 SiO2重量%,仅0.3 wt%Al2O3,石英含量为98 重量%。
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引用次数: 4
Applying an equivalent free settling ratio to enhance ferro-magnetic and para-magnetic particles’ separation efficiency using the influence of a magnetic field aligned with gravity 应用等效自由沉降比,利用与重力对齐的磁场影响提高铁磁和准磁颗粒的分离效率
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-02-09 DOI: 10.1080/25726641.2021.1999196
H. Dehghani, Mohammad Mehdi Salarirad, Hosein Asli
ABSTRACT Settling behaviour of particles in aqueous mediums depends on the resultant force acting on them. This force normally is the resultant of gravity, buoyancy and drag forces. Therefore, the settling velocity of coarse and light particles is very close to that of fine but dense particles. This fact is the major cause of poor beneficiation of fine valuable minerals in gravitational separation devices like spirals. So, implementing of an external force such as magnetic force may well improve the beneficiation of such particles. Theoretical analysis of terminal settling velocity (TSV) of particles shows that a magnetic field aligned with gravity can increase TSV of minerals with magnetic properties which in turn results in higher free settling ratios between magnetic and non-magnetic particles. In this regard, an innovative laboratory device was designed, fabricated and used to better understand the simultaneous effects of gravity and a magnetic force aligned with it.
颗粒在水介质中的沉降行为取决于作用在它们身上的合力。这种力通常是重力、浮力和阻力的合力。因此,粗、轻颗粒的沉降速度与细、密颗粒的沉降速度非常接近。这是螺旋等重力分选装置中细粒有价矿物选矿效果差的主要原因。因此,施加磁力等外力可以很好地改善这类颗粒的选矿。对颗粒终端沉降速度(TSV)的理论分析表明,与重力方向一致的磁场可以提高磁性矿物的TSV,从而提高磁性和非磁性颗粒之间的自由沉降率。在这方面,一个创新的实验室装置被设计、制造和使用,以更好地理解重力和与之对齐的磁力的同时效应。
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引用次数: 0
Determination Method of Gas Content in Limestone and Its Application 石灰石中气体含量的测定方法及其应用
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-01-01 DOI: 10.11648/j.ijmpem.20220701.14
Zhang Jin Song
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引用次数: 0
Design of Air Table Equipment for the Separation of Metal Minerals by Gravity Concentration with Wind Media 风介质重选金属矿物气台设备的设计
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-01-01 DOI: 10.11648/j.ijmpem.20220702.12
Taufik Arief, Hasjim Machmud, Eva Oktinasari
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引用次数: 1
Design and Development of a 0.012 m3 Froth Flotation Machine from Locally Sourced Materials 0.012 m3泡沫浮选机的设计与开发
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-01-01 DOI: 10.11648/j.ijmpem.20220701.15
Francis Asokogene Oluwadayo, Okafor Michael, Oboh Anthony
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引用次数: 0
Research Progress of Fusion Welding Techniques for TiNi Alloy to Steel TiNi合金与钢的熔焊技术研究进展
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-01-01 DOI: 10.11648/j.ijmpem.20220702.14
Zhijin Guo, Yan Zhang, Jianping Zhou, Daqian Sun, Hongmei Li
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引用次数: 0
Experimental Compressive Strength and Microstructure Analysis of Magnesium Fluxed Pellets 镁熔剂球团的实验抗压强度及微观结构分析
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-01-01 DOI: 10.11648/j.ijmpem.20220701.13
Zeyu Chen, Changqing Hu, Xuefeng Shi, Qichen Hu, Lianjie Liu, Hong-li Xiao
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引用次数: 0
Design and Experimentation Shaking Table Tool for Gravity Concentration Metal Mineral Separation 金属矿物重选振动台工具的设计与试验
IF 1.2 Q2 Earth and Planetary Sciences Pub Date : 2022-01-01 DOI: 10.11648/j.ijmpem.20220701.11
Taufik Arief
: Mineral dressing, especially metal minerals in Indonesia, is carried out using appropriate methods based on their properties and characteristics. The method often used is gravity concentration. The technology that makes use of it is a shaking table. This tool works based on the difference in specific gravity and pаrtіcle size in the flowing film concentration which exerts a thrust against the pаrtіcles on the deck. In an effort to meet the needs of practicum and research in the mining engineering department, especially the Sriwijaya University Mineral Processing Laboratory. For this reason, the existing equipment in the laboratory is modified by changing the design and size of its main components. The deck is designed with a length of 170 cm and a width of 102 cm. The riffles are installed parallel to a height of 3 mm, a width of 1 cm and a spacing of 3 cm. Experimentation is carried out by adjusting the variation of the variables. The variables used as parameters are deck slope (4°, 6° and 8°), water flow rate (10, 12 and 15 L / min) and feedingspeed (5, 10 and 15 minutes). The sample used was refined tin ore. Sampling at two locations, namely sample A at the Bantam B122 Collection Station, Belinyu and sample B at the TKT DU1521 Jangkang Washing Plant Station.
在印度尼西亚,选矿,特别是金属矿物,是根据其性质和特点采用适当的方法进行的。常用的方法是重力集中。利用它的技术是一个振动台。该工具的工作原理是基于流动膜浓度中比重和pmr大小的差异,该差异对甲板上的pmr施加推力。为了满足采矿工程系,特别是斯里维加亚大学选矿实验室的实习和研究需要。为此,通过改变其主要部件的设计和尺寸,对实验室现有设备进行改造。甲板设计长度为170厘米,宽度为102厘米。膛线平行安装,高度为3毫米,宽度为1厘米,间距为3厘米。实验是通过调整变量的变化来进行的。作为参数的变量是甲板坡度(4°、6°和8°),水流速度(10、12和15升/分钟)和进料速度(5、10和15分钟)。所使用的样品为精炼锡矿石。在两个地点取样,即样品A在白林屿Bantam B122采集站,样品B在TKT DU1521长康洗厂站。
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Mineral Processing and Extractive Metallurgy-Transactions of the Institutions of Mining and Metallurgy
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