广西某微细浸染型原生金矿石浮选试验

广西某金矿石是高砷高有机碳、以包裹金为主的微细浸染型原生金矿石，为确定矿石的选矿工艺，进行了浮选试验。结果表明：矿石在磨矿细度为-0.074 mm占85%的情况下，采用硫酸铜为主要载金矿物黄铁矿的活化剂，丁基黄药+丁胺黑药组合为金矿物和载金矿物的捕收剂，经1粗2精3扫的闭路浮选流程处理，可获得金品位为31.50 g/t、金回收率86.57%的金精矿，药剂制度及工艺流程较简单，选矿指标较好。

Experimental Research on Mineral Processing of a Micro-disseminated Primary Gold Deposit in Guangxi

A gold ore in Guangxi is a micro-disseminated primary gold ore with high arsenic and organic carbon content and mainly in form of inclusion gold. Flotation tests were carried out to determine the mineral processing technology. The results showed that in the condition of grinding fineness of -200 mesh accounting for 85%， copper sulfate was taken as the activator， and butyl xanthate and butylamine dithiophosphate were taken as combined collectors of gold mineral and gold-bearing mineral. Gold concentrate with gold grade of 31.50 g/t and gold recovery rate of 86.57% was obtained after a closed-circuit flotation process containing one roughing-two cleaning-three scavenging process. The regulation of reagent and technological process are simple， which achieve better mineral processing indexes.A gold ore in Guangxi is a micro-disseminated primary gold ore with high arsenic and organic carbon content and mainly in form of inclusion gold. Flotation tests were carried out to determine the mineral processing technology. The results showed that in the condition of grinding fineness of -200 mesh accounting for 85%， copper sulfate was taken as the activator， and butyl xanthate and butylamine dithiophosphate were taken as combined collectors of gold mineral and gold-bearing mineral. Gold concentrate with gold grade of 31.50 g/t and gold recovery rate of 86.57% was obtained after a closed-circuit flotation process containing one roughing-two cleaning-three scavenging process. The regulation of reagent and technological process are simple， which achieve better mineral processing indexes.