生物氧化预处理提金新工艺研究  

Study on New Techniques for Bio-oxidation Pretreatment of Au Extraction

作　　者：吕重安[1] 安娟[2] 

机构地区：[1]大冶有色金属公司,湖北黄石435005 [2]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《湖南有色金属》2010年第1期28-30,共3页Hunan Nonferrous Metals

摘　　要：研究了生物氧化法对含砷难处理金矿的预处理。在矿浆浓度为18%、氧化时间为168 h(7d)的优化条件下,选用优良菌种对目的矿物进行预处理,使金的氰化浸出率由常规氰化法的14.06%提高至94.01%。该方法经济可行,成功实现了难冶金矿浸出率的突破。The pretreatment of refractory gold concentrate containing As by bio-oxidation method was studied. The pretreatment of desired mineral was conducted by superior strain under the optimized condition that the concentration of pulp was 18% and the oxidation time was 168 h（7 days）, so that the rate of leaching for gold was increased from 14.06% by conventional cyanidation to 94.01%. The program was economically feasible, and successfully achieved a breakthrough in leaching rate of refractory gold concentrate.

关 键 词：生物氧化 含砷难处理金矿 优良菌种 浸出率 

分 类 号：TF831[冶金工程—有色金属冶金]