【摘要】 研究了用多硫化物溶液直接浸出固硫焙烧焙砂中的金。考察了时间、温度、硫化钠浓度、S0 /Na2 S分子比等因素对金浸出率的影响。在最佳浸出条件下 ,所得焙砂浸出结果 ,与焙砂预脱硫化钙后的氰化浸出效果相当。多硫化物浸出具有消除硫化钙影响、浸金速度快、试剂基本无毒等特点更多还原

【Abstract】 The study on direct leaching of gold from calcines generated in sulfur-fixed roasting with polysulfide solution has been carried out.Factors affecting gold recovery,such as time,temperature,sodium sulphate concentration and S 0/Na 2S,have also been investigated.Under the optimum conditions,the leaching results achieved match to those obtained in cyanide leaching after pre-eliminating of calcium sulfide.Polysulfide leaching can eliminate the effect of calcium sulphate,with rapid leaching of gold without using nontoxic reagents.更多还原