浮选金精矿细菌氧化—氰化提金连续扩大试验研究  

Research on the Continuous Expanded Test of Flotation Gold Concentrate by Bacterial Oxidation-cyanide Leaching Method

作　　者：仲维华[1] 

机构地区：[1]吉林省冶金研究院,吉林长春130012

出　　处：《黄金科学技术》2012年第6期62-64,共3页Gold Science and Technology

摘　　要：某金矿石金矿物粒度细小且大部分以次显微金的形式存在,属于高砷硫化矿难选金矿石。由于浮选金精矿含砷,常规氰化浸出率仅为11.84%。经细菌氧化—氰化提金连续扩大试验研究,磨矿细度-0.071 mm占96%,矿浆浓度20%,矿浆温度45℃,矿浆pH值1.5～1.8,细菌氧化采用二级氧化,氧化时间9 d,金浸出率达到93.24%,比常规氰化浸出率提高了81.40%,各项指标大幅提高,解决了销售难题,达产后年利润提高了5 000万元,为含砷硫化矿难选金矿石的开发利用提供了选冶新工艺。The gold ore contents particle size ore, most of them exists in the form of submicroscopic gold, arsenic and package pyrite,it is the high arsenic sulfide gold ore.When doing the flotation the gold concentrate contain- ing arsenic,conventional cyanide leaching rate is only 11.84 percent.We carry out the expanding continuous test which is called flotation gold concentrate by bacterial oxidation-cyanide leaching gold ,with grinding fineness of 0.071 mm（ 96 percent）, pulp density of 20 percent, pulp temperature of 45 ~C,and pH value of 1.5-1.8 , using see- ondary bacterial oxidation.When the oxidation lasts for 9 days,the gold leaching rate reaches 93.24 percent,which is more higher than cyanide leaching rate （81.40 pereenl）.ln this case,index is increased significantly and the sales problem is solved,and profit increases by more than fifty million per year.The research provides a new rain- eral smelting technology for the utilization of gold arsenic sulphide ore

关 键 词：含砷金矿石 浮选金精矿 细菌氧化-氰化提金法 连续扩大试验 

分 类 号：TF831[冶金工程—有色金属冶金]