某金精矿浸出试验研究及综合利用分析

为确定某金精矿产品处理方案进行了金精矿浸出试验研究,条件试验表明:磨矿细度和氰化钠用量是影响金浸出率的关键因素;金精矿Ⅰ较难浸出,根据最佳浸出条件采用常规浸出工艺金浸出率为83.28%,采用边磨边浸金浸出率84.26%;金精矿Ⅱ浸出率可达到87.59%,但浸渣选铜一段粗选铜回收率可达79.24%;最终该金精矿产品处理方案需要进行经济对比,同时需要考虑浸渣回收铜的可能性和经济分析;尾渣筛析表明,细粒级中金品位低,损失的金属于细粒的包体金。

A Leaching Study on a Gold Ore Concentrate and its Multi -purpose Utilization Analysis

A cyanide leaching study was conducted on a gold concentrate from a gold ore in order to determine the treatment process.The results indicated that grinding fineness and the cyanide dose were the key factors which had effect on the leaching rate of gold.According to the optimum condition test,the leaching rate of gold concentrate Ⅰ reached to 83.28% by normal leaching process and 84.26% by the leaching while pulverizing process.The leaching rate of gold concentrate Ⅱ reached to 87.59%,with a recovery of 79.24% Cu after a one-stage rougher flotation of the sludge.An economic benefit comparison was necessary to choose the final treatment process.It was also necessary to concern the recovery of Cu,based on economic analysis.Screening analysis on the tailings showed low content of gold in fine particles in which the gold element probably exists in the inclusions.