Feasible Beneficiation Studies to Enrich Grade and Recovery by Adopting Grinding Followed by Gravity and Magnetic Separation

IF 1.6 4区材料科学 Q2 Materials Science Transactions of The Indian Institute of Metals Pub Date : 2024-09-04 DOI:10.1007/s12666-024-03445-2

D. Vijaya Mitra, Kevin Jason, Karthik Parmeswaran, T. Uma Devi, Rameswar Sah

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Abstract

The recovery of Fe from an oversized sample in a spiral classifier upgrades a 55% Fe to 59% Fe output in a size range (− 3 mm + 150 μm). The output was subjected to fine grinding making it suitable for pellet plant. The ground fine ore was subjected to 2 processing routes: gravity concentration followed by magnetic separation. The tailing after gravity separation was subjected to magnetic separation with varying Gauss. One set of Fe enrichment was achieved in the concentrate after gravity separation and in the mag part of magnetic separator. The overall concentrate was 61.38% Fe, 4.53% SiO₂, and 2.97% Al₂O₃, with an yield of 83.45%. The Fe recovery was 86.27%. Alternately, fine ore was directly subjected to magnetic separation at 8000 Gauss, enriching the ore to 65.12%Fe with 48.15% yield which corresponds to 52.81% Fe. Thus, gravity concentration followed by magnetic separation gave higher grade, yield and Fe recovery.

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采用磨矿后重力和磁力分离提高品位和回收率的可行性选矿研究

用螺旋分级机从超大样品中回收铁，在粒度（- 3 毫米 + 150 微米）范围内，铁的回收率为 55% 至 59%。产出的矿石经过细磨，适合用于球团厂。磨细后的矿石经过两种处理工艺：重力选矿和磁选。重力选矿后的尾矿进行不同高斯的磁选。重力选矿后的精矿和磁选机的磁体部分都实现了铁的富集。精矿中铁含量为 61.38%，二氧化硅含量为 4.53%，氧化铝含量为 2.97%，产率为 83.45%。铁的回收率为 86.27%。另一种方法是将细矿石直接进行 8000 高斯磁选，将矿石富集到 65.12%的铁，产率为 48.15%，相当于 52.81%的铁。因此，先重力选矿后磁选的品位、产量和铁回收率都较高。

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来源期刊

Transactions of The Indian Institute of Metals Materials Science-Metals and Alloys

CiteScore

2.60

自引率

6.20%

发文量

期刊介绍： Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering. Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.