摘要
贵州某含硫微细粒浸染型金矿石中金主要以硫化物包裹金形式存在,载金硫化矿物嵌布粒度细并与脉石矿物共生密切,需细磨才能使硫化物较好地单体解离,而脉石矿物多为易泥化的碳酸盐及黏土类矿物,细磨会产生大量矿泥,降低浮选指标,因此采用两段阶段磨矿—阶段浮选工艺进行选矿试验。结果表明:在一段磨矿细度为-0.074 mm占80%时,以(NH4)2SO4+Cu SO4为活化剂、丁基黄药+丁铵黑药为捕收剂、2号油为起泡剂,经1粗1精一段浮选,一段浮选尾矿磨细至-0.074 mm占95%,经1粗3精3扫二段浮选,获得的混合精矿金品位为50.79 g/t、回收率为88.31%,可以为该矿石的开发利用提供依据。
Gold mainly exists in form of sulfide-wrap minerals in a finely micro-disseminated gold deposit contains sulfur in Guizhou. Gold-beating sulfide minerals are fine disseminated and closely associated with the gangue minerals. Fine grinding was needed to make the sulfide minerals to be liberated,while the gangue mineral are mainly carbonate or clay minerals, easily to slime. Fine grinding will produce large amount of slime, reduce the flotation index, so the two stage grinding stage flotation process was conducted. The results indicated that, at the grinding fineness of 80% -0. 074 mm,using （ NH4 ） 2SO4 and CuSO4 as activator, butyl xanthate and butyl ammonium aerofloat as collector,2$ oil as frother, via one stage flotation of one roughingone cleaning,first stage flotation tailing ground to 95% passing O. 074 mm,via two stage flotation of one roughing-three clean- ing-three scavenging,bulk concentrate with gold grade of 50.79% and recovery of 88.31% was obtained. The results can pro- vide technique basis for the development and utilization of the ore.
出处
《金属矿山》
CAS
北大核心
2016年第2期77-81,共5页
Metal Mine
基金
国家自然科学青年基金项目(编号:51504053)
中国博士后基金项目(编号:2015M571324)
辽宁省科技厅博士科研启动基金项目(编号:201501157)
辽宁省教育厅项目(编号:L20150180)
关键词
载金硫化矿
泥化
两段阶段磨选
Sulfide ore associated gold,Sliming,Two-stage grinding and flotation
