难处理金精矿连续生物氧化—炭浸提金研究  

Research on Continuous Bacterial Preoxidation-cyaniding Process for a Refractory Gold Concentrate

作　　者：吕卫强 

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《矿产保护与利用》2013年第1期35-38,共4页Conservation and Utilization of Mineral Resources

基　　金：国家重点基础研究发展计划项目(编号:2010CB735502);福建省杰出青年基金项目(编号:2011J0103)

摘　　要：针对某难处理金精矿,采用连续生物预氧化—炭浸提金工艺,在一级氧化3 d、二级氧化4 d、矿浆浓度15%、充气速率0.2 m3/(L·h)、温度45℃条件下,硫化物的氧化率95.96%,氧化渣炭浸提金浸出率96.54%。For a refractory gold concentrate, continuous bacterial preoxidation - cyaniding experi- ments were carried out. The oxidation ratio of sulfide was 95.96% and the leaching rate of gold was 96.54% when the pulp density being 15%, primary oxidation time being 3 days, the seconda- ry oxidation time being 4 days, the agitation speed being 300 r/min, the temperature being 45℃ and the aeration rate being 0.2 m3/（ L . h）.

关 键 词：难处理金精矿 生物预氧化 炭浸 硫化物氧化率 金浸出率 

分 类 号：TD925.6[矿业工程—选矿]