高砷金矿中金的非氰化浸出研究  

Study on Non-cyanide Leaching of Gold from High Arsenic Gold Ores

作　　者：汤庆国 沈上越[1] 

机构地区：[1]中国地质大学

出　　处：《矿产综合利用》2003年第2期16-20,共5页Multipurpose Utilization of Mineral Resources

摘　　要：研究了氨性硫代硫酸盐体系中难浸高砷金矿金的浸出行为 ,考察了硫代硫酸钠浓度和氨水、硫酸铜、硫酸铵用量对金浸出率的影响。实验证明 ,氨性硫代硫酸盐溶液能够有效地溶解包裹在金粒表面的雌黄、雄黄等含砷矿物 ,金能被有效浸出。以甘肃坪定金矿为例 ,其浸出率可由氰化法的 15 %提高到 90 %。The leaching behavior of gold from high As refractory gold ores with ammonium thiosulfate was studied in this paper.The influence of sodium thiosulfate concentration,and the dose of NH 3,CuSO 4,(NH 4) 2SO 4 on leaching rate of gold was examined.It has been confirmed that ammonium thiosulfate solution can effectively resolve orpiment and realgar etc.As containing minerals included in particle surface of gold,and the gold can be effectively leached by ammonium thiosulfate solution.The leaching rate of gold is increased to 90% by ammonium thiosulfate,as against the 15% under the condition of cyanide leaching.

关 键 词：高砷金矿 雌黄 雄黄 氨水 硫代硫酸盐 

分 类 号：TF111.31[冶金工程—冶金物理化学]