菌种活化条件对含砷金矿石生物预氧化的影响  

Effect on Bacterial Activation Conditions on Biological Pre-oxidation of Arsenic-Containing Gold Ore

作　　者：闫颖[1] 刘文斌[1] 王铧泰[1] 王秀美[1] 夏乐先[1] 柳建设[1] 

机构地区：[1]中南大学

出　　处：《金属矿山》2008年第6期52-55,共4页Metal Mine

基　　金：国家自然科学基金创新群体基金项目(编号:50321402);国家重点基础研究发展规划项目(973项目)(编号:2004CB619204)

摘　　要：为提高含砷金矿生物预氧化所用细菌的活性,采用经含砷金矿长期驯化的嗜中温混合菌群进行了活化试验,并用活化菌种对山东某含砷金矿石进行了生物预氧化试验。结果表明:以10g/L的FeSO4·7H2O和质量分数为5%的金矿作为混合能源对菌种进行1次活化后,金矿石生物预氧化的脱砷率可达到75.0%;以质量分数为5%的金矿为能源对1次活化菌种进行2次活化后,金矿石生物预氧化的脱砷率可进一步提高到89.0%。To improve the activity of bacteria used for the pre-oxidation of arsenic-containing gold ore, study was made on the activation of the moderate thermophiles long domesticated by arsenic-containing gold ore and the activated bacteria was used in the biological pre-oxidation test. The result indicates that when 10 g/L FeSO4 · 7H2O and 5% gold were combined and used as energy for the bacterial activation, the arsenic removal rate of the biological pre-oxidation of gold ore can reach 75.0% , when 5% gold ore was used for the second bacterial activation, the arsenic removal rate can be further increased to 89.0%.

关 键 词：生物预氧化 含砷金矿 嗜中温菌 脱砷率 活化 

分 类 号：TD953[矿业工程—选矿] TQ424.1[化学工程]