难处理高砷金矿的细菌氧化-提金研究  

Study on Bacterial Oxidation-extraction Gold of Refractory Gold Ore

作　　者：杨洪英[1] 范金[1] 崔日成[1] 巩恩普[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《贵金属》2009年第3期1-3,20,共4页Precious Metals

基　　金：国家自然科学基金资助项目(50674029;50874030);国家高技术研究发展计划项目(2006AA06Z127);高等学校博士学科点专项科研基金(20060145015)

摘　　要：采用经过驯化的HQ0211菌对高砷金矿进行氧化预处理-氰化提金实验研究。该矿石含金128.5 g/t,含砷16.84%(质量分数,余同),含硫21.72%,含铁26.62%,氰化浸出率只有29.35%,是典型的高砷难处理矿。经过细菌氧化预处理,金矿脱砷率达到96.2%,失重率达到43.9%。矿石的金氰化浸出率由原来的29.35%提高到92.57%,效果十分显著。The experiments of bacterial oxidation, cyanidation extraction gold from refractory high arsenic gold ore were carried out with bacteria HQ0211 domesticated. This kind of gold ore contains 128.5 g/t gold, 16.84% arsenic,21.72% sulfur,26.62% .iron. The leaching rate of cyanidation only has 29. 35%. It is classed into the high arsenic refractory gold ore. The dearsenication rate of the gold ore is 96. 2%, weight - loss rate is 43.9% through bacterial oxidation pretreatment. After bacterial oxidation, the gold cyanidation leaching rate of the ore increase to 92.57% from 29.35%, and results are in evidence.

关 键 词：冶金技术 微生物冶金 难处理高砷金矿 细菌氧化 氰化提金 浸出率 

分 类 号：TF831[冶金工程—有色金属冶金]