Feasibility Analysis of the Improvement of the Silver Separation and Impurity Removal Process
In view of the serious environmental pollution problem in the wet ammonia leaching separation of silver separation-hydrazine hydrate precipita-tion-silver rotary furnace smeltering impurity removal process in a smelter,the experiment employs sodium sulfite silver separation-formaldehyde reduction process to recover silver from gold slag,and the advantages and disadvantages of the two processes of formaldehyde direct reduction and formaldehyde indi-rect reduction are compared and examined.It is concluded that the sodium sulfite silver separation-silver separation solution complex breaking-silver chlo-ride oxidation leaching impurity removal-formaldehyde reduction of silver chloride process replaces the original production process,it can improve the sta-bility of the system and the quality of coarse silver powder,and can increase the benefits of the enterprise by at least 1.3869 million yuan per year.
NETL
NSTL
万方数据
