某低品位氧化锰矿磁选试验研究  

Magnetic Separation of a Low-grade Manganese Oxide Ore

作　　者：杨茂春 肖东升 敖江 周亮 郭强 YANG Mao-chun;XIAO Dong-sheng;AO Jiang;ZHOU Liang;GUO Qiang(Yunnan Keli New Material Co Ltd,Kunming 650031,Yunnan,China)

机构地区：[1]云南科力新材料股份有限公司

出　　处：《矿冶工程》2020年第1期73-76,共4页Mining and Metallurgical Engineering

摘　　要：针对某低品位氧化锰矿分选指标不高的现状,考查了原矿性质和-6 mm粒级分布情况,结合原工艺条件,进行了磁选-中矿分级脱泥以及分级磁选试验。结果表明:感应辊式磁选机处理粗粒级锰矿效果较好,高梯度磁选机处理细粒级锰矿效果较好,两种工艺流程均可获得混合精矿品位高于30%、回收率高于84%的较好指标。Aiming at poor beneficiation behavior of a low-grade manganese oxide ore,the characteristics of the raw ore and size distribution of-6 mm particles were all investigated.Based on the original processing conditions,an experiment was performed by adopting the process consisting of magnetic separation,classification and desliming of middlings,as well as classification and magnetic separation.It is shown that the induction roll magnetic separator is better for processing coarse-grained manganese ores,while the high gradient magnetic separator is better for fine-grained manganese ores.Both processes can produce a mixed concentrate with Mn grade higher than 30%and recovery rates higher than 84%.

关 键 词：低品位 氧化锰矿 分级脱泥 磁选 分级磁选 

分 类 号：TD924[矿业工程—选矿]