Beneficiation of micro-fine magnetic minerals from reductive iron ore with ultrafine grinding-magnetic flocculation separation

Beneficiation of micro-fine magnetic minerals from reductive iron ore with ultrafine grinding-magnetic flocculation separation
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超细磨-磁絮凝分离从还原铁矿石中选矿微细磁性矿物

DOI:
10.1080/01496395.2017.1379537
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发表时间:
2018-01
影响因子:
2.8
通讯作者:
Wen Shu-Ming
Wen Shu-Ming
中科院分区:
工程技术4区
文献类型:
--
作者:
Bai Shao-Jun;Li Chun-long;Fu Xiang-yu;Wu Meng;Wen Shu-Ming

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摘要 对还原铁矿石中微细磁性矿物的选矿进行了研究。进行了磁性絮凝体的样品特性和主力分析。结果表明,还原铁矿石中的铁相主要是金属铁(20μm以下)。对原矿(Fe含量29.85%)进行超细磨-磁絮凝分离(MFS),得到铁含量74.12%、铁回收率81.45%的精矿。与传统磁选(CMS)相比,铁回收率提高了6.68%。选矿的高效率可能归因于对絮凝体形式的微细铁矿物的磁力增加。
ABSTRACT Beneficiation of micro-fine magnetic minerals from reductive iron ore was investigated. Sample characteristics and main force analysis of magnetic floc were conducted. The results indicated that the iron phase in reductive iron ores was predominantly metallic iron (below 20 μm). By applying ultrafine grinding-magnetic flocculation separation (MFS) to the raw ore (29.85% Fe), a concentrate assaying 74.12% Fe with 81.45% iron recovery was obtained. The iron recovery increased by 6.68% compared with the conventional magnetic separation (CMS). The high efficiency in beneficiation may be attributed to an increase in magnetic force on the micro-fine iron minerals in the form of flocs.
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