Investigation of the effect of mineral composition and size on particle separation in Wet low and high intensities magnetic separators: An industrial case

IF 4.9 2区工程技术 Q1 ENGINEERING, CHEMICAL

Minerals Engineering Pub Date : 2024-10-01 DOI:10.1016/j.mineng.2024.109003

C. Bazin , R. Sista , B. Légaré , J. Caron , F. Lavoie

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Abstract

Magnetic separation is used in ore processing to separate the minerals according to their magnetic susceptibility. Particle size also plays a role in the separation although few industrial results are presented in the literature to discuss this matter. Results from sampling industrial Wet Low Intensity Magnetic Separators (WLIMS) and Wet High Intensity Magnetic Separators (WHIMS) for processing an iron ore show that except for the strongly paramagnetic magnetite (Fe₃O₄), the recovery of minerals decreases with increasing particle size for both WLIMS and WHIMS. The examination of polished sections of the coarse size fractions from the reject streams of the WHIMS does not provide ground to suspect liberation to be responsible for the reduced recovery of coarse particles. Results also show that it is difficult to establish clear relationships between the mineral recoveries and their reported magnetic susceptibilities for WLIMS while for WHIMS a weak trend is observable.

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研究矿物成分和粒度对湿式低强度和高强度磁选机中颗粒分离的影响：工业案例

磁选用于矿石加工，根据矿物的磁感应强度将其分离。粒度在分离过程中也起着作用，但文献中很少有工业结果来讨论这个问题。工业湿式低强度磁选机（WLIMS）和湿式高强度磁选机（WHIMS）处理铁矿石的取样结果表明，除了强顺磁性磁铁矿（Fe3O4）外，WLIMS 和 WHIMS 的矿物回收率随着粒度的增加而降低。通过对 WHIMS 废渣流中粗粒度馏分的抛光切片进行检查，没有理由怀疑解放是造成粗颗粒回收率降低的原因。结果还表明，在 WLIMS 系统中，矿物回收率与其报告的磁感应强度之间很难建立明确的关系，而在 WHIMS 系统中，则可以观察到微弱的趋势。

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来源期刊

Minerals Engineering 工程技术-工程：化工

CiteScore

8.70

自引率

18.80%

发文量

519

审稿时长

81 days

期刊介绍： The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.