A review of the beneficiation of low-grade manganese ores by magnetic separation

被引:15
作者
Elliott, Richard [1 ]
Barati, Mansoor [1 ]
机构
[1] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
manganeseore; magnetic separation; carbothermic reduction; separation efficiency; enrichment ratio; IRON-ORE; REDUCTION; SUSCEPTIBILITY; RECOVERY; MN; OXIDES; FE;
D O I
10.1080/00084433.2020.1711654
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Magnetic separation is an effective strategy for the upgrading of a variety of lean ores, including the beneficiation of low-grade manganese ores. This work reviews 24 studies on the magnetic separation of manganese ores; 6 of these studies report both a sufficiently high Mn grade (>44% Mn) and Mn/Fe ratio (>7.5) in the concentrate as to be suitable for use as high-grade feed materials in the production of ferromanganese. Of these 24 studies, the most efficient separation and enrichment was generally achieved by the reduction roasting of the ore prior to magnetic separation, rather than the direct separation of the ore. In both cases there was sufficient evidence for correlation, depending on the mineralogy, between the Mn and Fe grades of the ore and the final concentrate grade and Mn/Fe ratio. To yield a concentrate suitable for use in ferromanganese production, it is recommended that the ore contain a minimum initial concentration of similar to 25% Mn and similar to 10% Fe.
引用
收藏
页码:1 / 16
页数:16
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