安徽某铁硫铜多金属矿石综合回收试验研究

Experimental Research on Comprehensive Recovery of Iron-sulfur-copper Polymetallic Ore in Anhui

安徽某含铜铁矿石为典型的多金属伴生矿,矿物间共生密切,嵌布关系复杂。矿石中金属矿物主要为磁铁矿,少量黄铁矿、黄铜矿及磁黄铁矿等;非金属矿物主要为蛇纹石、透辉石及透闪石等。为综合回收矿石中的有价组分,在条件试验的基础上,采用铜硫混合浮选—铜硫分离—混浮尾矿磁选的工艺流程处理该矿石,全流程试验最终可获得Cu品位22.18%、Cu回收率76.85%的铜精矿,S品位43.29%、S回收率45.71%、Co品位0.43%、Co回收率45.04%的硫精矿,及Fe品位62.36%、Fe回收率93.09%、含S 0.18%的铁精矿。试验指标良好,伴生组分Co在硫精矿中有效富集,实现了有价金属的综合回收。

The ores containing iron and copper in Anhui is a typical polymetallic associated ore,with close symbiosis among minerals and complex distribution.The metallic minerals in the ore are mainly magnetite,and a small amount of pyrite,chalcopyrite,pyrrhotite and so on.The non-metallic minerals are mainly serpentine,diopside,tremolite and so on.In order to comprehensively recover the valuable components in the ore,the process flow of copper-sulfur mixed floatation,copper-sulfur separation and magnetic separation of mixed tailings was adopted to treat the ores on the basis of the condition test.The copper concentrate with Cu grade of 22.18%and Cu recovery rate of 76.85%,sulfur concentrate with S grade of 43.29%,S recovery rate of 45.71%,Co grade of 0.43%,Co recovery rate of 45.04%,and iron concentrate with Fe grade of 62.36%,Fe recovery rate of 93.09%,S contents of 0.18%was finally obtained through the whole process test.The test indexes are good and the associated component Co effectively enriched in the sulfur concentrate,indicating the comprehensive recovery of the valuable metals.