摘要
鹿鸣钼矿特大型钼矿山,矿石中除含有辉钼矿外还含有大量黄铜矿及黄铁矿,对其进行详细工艺矿物学研究,有针对性的制定选矿工艺方案,对于高效综合利用钼、铜、硫资源具有重要意义。采用化学分析、显微镜观察、SEM及EPMA分析等手段,研究了鹿鸣钼铜多金属矿的化学组成、矿物组成、重要金属矿物的嵌布特征、粒度分布及解离特性等,对影响选矿回收指标的工艺矿物学因素进行了分析。结果表明,矿石中钼的赋存状态简单,矿石含Mo 0.108%,其中96.74%的钼以辉钼矿形式存在且嵌布粒度较粗,与其它硫化矿矿物共生不密切,通过浮选可获得理想的钼回收指标;而铜的赋存状态相对复杂,矿石含Cu 0.021%,其中绝大部分铜以黄铜矿形式存在,少部分以辉铜矿、蓝辉铜矿、铜蓝等次生硫化铜矿物形式存在,而且黄铜矿等嵌布粒度细,在辉钼矿能充分单体解离的粗磨矿条件下,黄铜矿单体解离较差,这将会影响铜的浮选指标,泥化严重也会影响指标。根据该矿石工艺矿物学性质特征,该钼铜多金属矿宜采用优先混合浮选硫化钼铜矿—钼铜混合精矿再分离—强化选铜—粗选尾矿强化选硫的选别工艺流程。
The Luming molybdenum mine is a big porphyry copper molybdenum deposits. For comprehensive exploitation and utilization ofthis copper, molybdenum, sulfur resources,contents of chemical elements,composition of minerals and their disseminationin the ore were investigated by chemical analysis, microscopic observation, scan- ning electron microscope（SEM） and electron probe micro analysis（EPMA）. The ore contains 0. 108% Mo and 0. 021% Cu, the distribution and occurrence of molybdenum in the ore is simple, 96.74% of molybdenum exists predominantly as molybdenite. The dissemination sizes of mineral grains are relatively coarse, molybdenite and oth- er sulphide minerals are not closely associated; therefore, a flotation process can attain ideal molybdenum recovery index. The occurrence state of copper is relatively complex, most of the copper in the ore exists in form of chalcopyrite, a small number as chalcocite, digen-ite, covellite and other secondary copper sulfide minerals, and the dissemination sizes of chalcopyrite in it are so fine that under the coarse grinding conditions ,by which molybdenite can attain full mineral liberation, chalcopyrite liberation is so bad that it will affect the flotation recovery index. As sliming can easily influence the process, the selection of grinding fineness should be appropriate.
出处
《矿冶》
CAS
2017年第2期88-95,共8页
Mining And Metallurgy
关键词
鹿鸣钼矿
工艺矿物学
辉钼矿
解离度
Luming molybdenum ore
process mineralogy
molybdenite
mineral liberation
