铜锌浮选尾矿综合回收锂铷的试验研究

Experimental Study on Comprehensive Recovery of Lithium and Rubidium from Copper-Zinc Flotation Tailings

某铜锌矿选厂浮选尾矿中含有少量可综合回收的锂铷矿物,其中Li_(2)O和Rb_(2)O的含量分别为0.337%和0.109%。因尾矿石中泥化脉石矿物含量较高,采用常用锂矿捕收剂难以有效富集,选别难度较大。采用“擦洗脱药-脱泥-选锂-中矿再选”的选矿新工艺和新型高效锂云母捕收剂CK-L,获得了Li_(2)O品位为1.64%、Rb_(2)O品位为0.39%的锂铷精矿,Li_(2)O回收率为64.02%,Rb_(2)O回收率为48.69%,获得了较好的选矿指标,有效回收了铜锌尾矿中的锂铷资源,提高了资源综合利用率。

The flotation tailings of a copper-zinc ore dressing plant contain a small amount of lithium and rubidium minerals that can be comprehensively recovered,with Li_(2)O and Rb_(2)O contents of 0.337% and 0.109%,respectively.Due to the high content of argillized gangue minerals in tailings,it was difficult to enrich effectively using common lithium ore collectors,which making the separation process challenging.A new beneficiation process of scrubbing,desliming,lithium selection,and intermediate ore re-separation and a new high-efficiency lithium mica collector CK-L were used to obtain a lithium and rubidium concentrate with a Li_(2)O grade of 1.64% and a Rb_(2)O grade of 0.39%.The recovery of Liz O was 64.02% and the recovery of Rb_(2)O was 48.69%.Good beneficiation indexes were obtained,which effectively recovered the lithium and rubidium resources in copper-zinc tailings and improved the comprehensive utilization rate of resources.