某难选多金属硫化矿浮选分离试验研究

某地难分选铅锌矿石,由于铜、铅、锌矿物共生关系复杂,嵌布粒度粗细不均匀,含铜矿物天然活化锌矿物,致使铜、铅、锌矿物难以分选。试验采用细磨(90%-74μm),优先浮选工艺流程,添加组合抑制剂使铜、铅、锌矿物有效分离,获得互含合格铅、锌精矿,银同步富集在铅精矿中,并使铅精矿中杂质铜转化为可销售副产品,伴生组分得到最大限度综合回收,增加主产品铅、锌附加值,提高了综合技术指标和综合经济指标。

FLOTATION EXPERIMENTAL RESEARCH OF MULTI-METAL SULPHIDE ORE

The lead-zinc ore from a mine is featured by complicated copper-lead-zinc intergrowth and uneven dissemination size.Besides,the minerals containing copper activate by nature the minerals containing zinc,causing difficulty of separation of copper,lead and zinc minerals.The technology of fine grinding(0.074mm taking 90%)and preferential flotation is tested with addition of composite inhibitor,which separates effectively the copper,lead and zinc minerals.The tests are successful-the qualified lead-concentrates and zinc-concentrates are obtained while the silver is concentrated in lead-concentrates;the copper as impurity in lead-concentrates is converted into saleable by-product;the by-components are recovered as far as possible;the attaching value of main products(lead and zinc)is raised;and the comprehensive techno-economic indexes are increased.