氯离子对含砷金精矿细菌氧化过程的影响研究  

Research on the Chloride Ions' Effect on the Bacteria Pre-oxidation Process of Arsenic-containing Gold Concentrates

作　　者：杨玮[1] 刘瑞强 任允超 

机构地区：[1]西安建筑科技大学材料与矿资学院,陕西西安710055 [2]山东黄金矿业(莱州)有限公司精炼厂,山东莱州261441 [3]山东黄金集团烟台设计研究工程有限公司,山东烟台264006

出　　处：《黄金科学技术》2014年第4期93-98,共6页Gold Science and Technology

摘　　要：研究了不同Cl-浓度下含砷金精矿的细菌预氧化过程,试验结果表明:TCJ菌能够适应水源地的水质变化满足生产要求,在目前的生产条件下,TCJ菌耐受Cl-浓度的临界值是2.7 g/L;在不同的原料和浸出体系条件下,细菌对Cl-的适应性和耐受度是不同的,适宜的Cl-浓度在一定程度上有利于细菌氧化,过高的Cl-浓度会抑制细菌活性,影响预氧化效果。The paper mainly studies the pre-oxidation process of bacteria of Arsenic-containing gold concentrates under different chloride ion concentrations.The results show that TCJ bacteria can adapt to the changes of water quality in water-head sources to meet the production requirements.On the present producing conditions,the critical value of TCJ bacterial tolerance concentration of chloride ions is 2.7 g/L.The experiment shows that the adaptability and the extent of tolerance of bacteria on C1 is different in different raw materials and leaching system.Appropriate chloride ion is conducive to bacterial oxidation to some extent, while high chloride ions will inhibit bacterial activity and affect the pre-oxidation effect.

关 键 词：微生物冶金 含砷金精矿 预氧化 细菌适应性 临界浓度值 氧化亚铁硫杆菌 

分 类 号：TF831[冶金工程—有色金属冶金]