某微细粒嵌布铜锌铁多金属矿选矿试验研究  

Experimental Study on Mineral Processing of a Fine-grained Copper-Zinc-Iron Polymetallic Ore

作　　者：李明明 林爽 LI Mingming;LIN Shuang(School of Mining Engineering,Heilongjiang University of Science&Technology,Harbin,Heilongjiang 150022,China)

机构地区：[1]黑龙江科技大学矿业工程学院,黑龙江哈尔滨150022

出　　处：《矿业研究与开发》2021年第7期149-154,共6页Mining Research and Development

基　　金：黑龙江省自然科学基金联合引导项目(LH2019E0881)。

摘　　要：某多金属矿含铜0.38%、锌4.96%和铁23.34%,其中主要矿物黄铜矿和闪锌矿嵌布粒度较细,呈稠密浸染分布。为了高效回收矿石中的有用矿物,开展了系统的选矿试验研究。结合矿石性质和硫化矿物的自然可浮性,确定了铜优先浮选-锌硫混合浮选再分离-浮选尾矿磁选回收磁铁矿的原则工艺流程。闭路试验可获得品位21.92%和回收率62.66%的铜精矿,以及品位47.36%和回收率63.28%的锌精矿;浮选尾矿经磁选-浮选脱硫后,可获得品位60.05%和硫含量0.52%的铁精矿;同时矿石中的银和铟有价元素也在铜锌精矿中获得了较好的富集,为该矿石的工业开发提供了技术支持。A polymetallic ore contains 0.38% of copper, 4.96% of zinc and 23.34% of iron. Chalcopyrite and sphalerite are the main minerals with fine disseminated particle size, and are intercalated densely impregnated and distributed. In order to efficiently recover useful minerals from ores, a systematic experimental study on mineral processing was carried out. Combined with the ore properties and the natural floatability of sulfide minerals, the principle process flow which contain copper preferential flotation, zinc-sulfur mixed flotation and separation, and recovery of magnetite from flotation tailings by magnetic separation was determined. Through closed circuit test, copper concentrate with grade of 21.92% and recovery of 62.66% and zinc concentrate with grade of 47.36% and recovery of 63.28% can be obtained through closed circuit test. Iron concentrate with grade of 60.05% and sulfur content of 0.52% can be obtained after magnetic separation flotation and desulfurization of flotation tailings. Meanwhile, valuable elements of silver and indium in the ore are also enriched in copper and zinc concentrate, which provides technical support for the industrial development of the ore.

关 键 词：微细粒嵌布 多金属矿 优先浮选 闪锌矿 黄铜矿 磁铁矿 

分 类 号：TD946[矿业工程—选矿]