In response to the problem of low direct yield in the extraction of platinum and palladium from gold reduced solution using ammonium chloride precipitation method in thewet process flow,this article explores the factors affecting the platinum and palladium precipitation rate in this process,and seeks the optimal combination of conditions to achieve maximum platinum and palladium precipitation rate in this step.The results show that under the optimal combination of conditions,the precipitation rates of platinum and palladium can reach 94.6％and 93.8％,which are less affected by the fluctuation of liquid acidity after gold reduction and remain basically unchanged in the scaled up experiment,which has practical guidance significance for actual production.
关键词
金还原后液/氯化铵沉淀法/沉淀率/铂/钯
Key words
liquid after gold reduction/ammonium chloride precipitation method/sedimentation rate/platinum/palladium
维普
万方数据