提高某银多金属矿综合回收率的选矿试验研究

Experimental Research on Increasing Recovery of Products from a Silver Polymetallic Ore

某银多金属矿为铜、铅、锌、银复杂共生难选多金属矿,其生产现场采用铜、铅、锌顺序优先浮选工艺流程,因长期达不到设计指标,该矿拟走铜、铅、锌混合浮选—冶金联合流程的工艺路线。为此,笔者对矿石性质及浮选工艺流程、浮选药剂制度进行了研究,结果表明:在磨矿细度-200目含量为91.20%的情况下,能够得到含杂低且铜、铅、锌、银综合回收率较高的混合精矿,同时还可回收其中的硫。

The silver polymetallic ore is a intergrown and refractory copper - lead - zinc - silver complex ore. In the past several years, in some production enterprises the technological flowsheet of selective flotation of copper - lead - zinc was successively adopted,but the designed production indexes cannot achieved long -term. Thus,on the basis of detailed experimental research of the ore properties and the flotation technological flowsheet and reagent scheme, a combined technological flowsheet of bulk flotation of copper - lead - zinc and metallurgy was be selected. The bulk concentrate with lower content of impurities and higher recovery of copper - lead - zinc - silver is be obtained under the condition of grinding fineness is 91.20% -0. 074mm. At the same time,the sulfur can be effectively recovered as well.