摘要
以某实际含铜金矿为研究对象，在氯盐酸性加温体系下，分析浸出温度、时间、矿物粒度、NaCl浓度、H2SO4浓度、氧气流量等因素对化学预氧化浸出除铜和浸出渣氰化浸金的影响过程。结果表明：在90％矿样粒度小于378m、浸出温度95℃、初始H2S04浓度0．75mol／L、起始NaCl浓度0．7mol／L、液固比5：1、浸出时间24h、搅拌速度750r／min的条件下，可使铜的浸出去除率达到80％以上，预氧化渣金的氰化浸出率达98．23％。
A certain refractory copper-bearing gold ores were studied. Under the acid and warming system of chlorine, the influence of some factors on process of chemical pre-oxidation leaching copper and cyanidation leaching gold from residue were researched, such as leaching temperature and time, mineral granularity, NaCl concentration, H2SO4 concentration and flow rate of oxygen. The results show that copper removing ratio is more than 80% and gold leaching ratio is more than 98.23%, under the condition of 90% of mineral granularity 37 μm, leaching temperature 95 ℃, initial NaCl concentration 0.7 mol/L, initial H2SO4 concentration 0.70 mol/L, leaching time 24 h, ratio of liquid to solid 5：1 and stirring rate 750 r/min.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2008年第E01期53-58,共6页
The Chinese Journal of Nonferrous Metals
基金
江西省自然科学基金资助项目（0650043）
关键词
含铜金矿
预处理
化学氧化
浸出工艺
copper-bearing gold ores
pretreatment
chemical oxidation
leaching
