【摘要】 采用HCl溶液处理含银废液和废渣,然后用K2CO3和KOH将沉淀进行转化,将转化的沉淀溶解于稀HNO3中,制成AgNO3溶液,并将其浓缩结晶和二次重结晶,即制得固体AgNO3,其纯度可以达到99 8%以上,杂质含量符合国家产品分析纯(A R)标准。更多还原

【Abstract】 The solution of silver nitrate was obtained by treating the silver-contained waste liquid and waste dregs with the solution of hydrochloric acid,transforming the sediments with the solution of potassium carbonate and potassium hydroxide,and dissolving the transformed sediments in dilute nitric acid.The solution of silver nitrate could be concentrated and crystallized or re-crystallized so as to get the solid silver nitrate,the content of which was obove 99.8%,and the amounts of impurities were complied with the national products level of analytical reagent(A.R).更多还原