云浮硫铁矿降低尾矿品位的工艺分析

Process analysis of reducing the grade of iron pyrite in tailings in Yunfu

根据云浮广业硫铁矿的多次选矿试验结果,探索了在保证硫精矿品位的情况下提高硫回收率、降低尾矿硫品位的工艺措施.分别对优先浮碳、精选Ⅱ中矿再磨再选和尾矿再磨再选流程进行了试验,提出了中矿再磨再选的可行工艺方案.

According to the mineral processing results of iron pyrite of Yunfu Guangye Group, some tecnnological measures were investigated to increase the recovery of pyrite in concentrates and reduce the grade of pyrite in railings. The flow sheets of ＂selective flotation for removing carbon＂, ＂regrinding and reprocessing of the middlings from cleaning Ⅱ ＂ and ＂regrinding of the tailings＂ were tested, finally, the scheme of ＂regrinding＇and re- processing of the middlings＂ was proposed as a feasible technology.