回收沉金后液中有价金属的工艺优化探讨

Review of Process Optimization of Recovering Valuable Metals in the Liquid after Gold Precipitation

通过分析回收沉金后液中有价金属生产中存在的问题,提出对沉铂钯工序中的锌粉置换与水解碲两个过程进行优化。试验研究了沉铂钯工序的最佳工艺条件,并选择液碱代替片碱,优化了铜阳极泥处理工艺路线,将其应用到实际生产中,一年可以减少22.91 t碲的系统占用,为企业直接变现至少1145.3万元。

By examining the problems identified in the production of valuable metals in the liquid after gold precipitation,it is present to optimize the two processes of zinc powder replacement and tellurium hydrolysis in the platinum and palladium precipitation process.The optimal process conditions for the platinum-palladium precipitation process are studied during the test,and liquid caustic soda is selected instead of flake caustic soda to optimize the copper anode mud treatment process route.By applying it to actual production,it can reduce the system occupancy of 22.91 tons of tellurium per year,achieving at least 11.453 million yuan for the enterprise.