针对提纯载金炭解吸电积粗金泥的一些不足,提出了分步还原法提纯,对还原过程的参数控制进行了试验研究。通过批量试验结果表明,采用该方法提纯金的纯度可达99.99%,完全符合国家牌号标准,有效提高了金的回收率,而且该工艺流程简单、操作技术条件易掌握、生产周期短、金积压少。 Aiming at some shortages of purifying the gold-bearing coarse-grained electrocatalysts, a step-by-step reduction method was proposed to purify the parameters of the reduction process. The batch test results show that the purity of the gold purified by the method can reach 99.99%, which fully meets the national grade standard and effectively improves the recovery rate of the gold. Moreover, the process flow is simple, the operating technical conditions are easy to grasp, the production cycle is short, the backlog of gold less.