摘要
在酸性条件下以高锰酸钾为氧化剂,打开难浸金矿中金的硫化物、砷化物包裹,提高金浸出率。结果表明,最佳的氧化预处理条件为:高锰酸钾用量40g/L、液固比12∶1、H2SO4初始浓度1.0mol/L、氧化温度80℃、氧化时间5h。预处理后金浸出率可达87.75%。
The package of gold sulfide and arsenic compound in refractory gold ore were broken with potas- sium permanganate in acidic condition to improve gold leaching rate. The results show that the optimum oxidation pretreatment conditions include dosage of potassium permanganate of 40 g/L, ratio of liquid to solid of 12 ：1, initial concentration of HzSO4 of 1.0 tool/L, oxidation temperature of 80℃, and oxidation time of 5 h. The gold leaching rate is over 85% after oxidation pretreatment.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2013年第8期29-31,45,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
贵州省科学技术基金项目(黔科合J字[2010]2003)
关键词
高锰酸钾
氧化预处理
难浸金矿
浸出率
potassium permanganate, oxidation pretreatment
refractory gold ore
leaching rate
