河南某钨钼矿石工艺矿物学研究

为给河南某钨钼矿选矿工艺流程优化研究提供理论依据,采用显微镜、MLA、X-射线衍射和电子探针等分析测试手段对有代表性矿石进行了工艺矿物学研究。结果表明:1矿石Mo、WO3品位分别为0.09%和0.13%,可回收利用的金属矿物有白钨矿、辉钼矿和含钼白钨矿。2钨、钼主要以白钨矿、钼钨钙矿和辉钼矿形式存在,硫化钼矿可采用浮选工艺回收;氧化钼钨矿则只能与白钨矿共同富集成钨钼混合精矿。3辉钼矿的嵌布粒度比白钨矿粗,相同磨矿细度下的解离度也较高。4绿泥石、透闪石、方解石等易泥化矿物和黄铁矿等硫化矿物的存在将影响钼钨选别指标。

Process Mineralogy Research of Tungsten-molybdenum Ore in Henan

In order to provide theoretical basis to optimize the beneficiation process of a tungsten-molybdenum ore from Henan,the process mineralogy research of the representative ore sample was made by microscope,Mineral Liberation Analyser (MLA),X-ray diffraction analysis and electron microprobe. The results showed that:①Mo content was 0. 09% and the WO3 content was 0. 13%,the recyclable metal minerals were scheelite,molybdenite and molybdenum scheelite. ②The existence form of tungsten and molybdenum in the ore were scheelite,molybdenite and molybdenum scheelite,molybdenum sulfide ore could be recovered by flotation process;the tungsten and molybdenum oxide could only get a tungsten-molybdenum mixed con-centrate.③The dissemination size of molybdenite was more coarse than scheelite,so the liberation degree of molybdenite was relatively with the same grinding fineness.④The molybdenum tungsten beneficiation index could be affected by the slimed minerals as chlorite,tremolite,calcite and sulfide mineral as pyrite.