【摘要】 研究了从多层陶瓷电容器（ＭＬＣＣ）废料中回收银、钯的方法，２００目的废料用４ｍｏｌ／ＬＨＮＯ３在８０℃下浸出２ｈ（液固比３），银、钯浸出率分别为９１％和９８％。用盐酸从浸出液中沉淀银，氯化银经熔炼得到９８％粗银锭，银回收率为８８％，用铁粉和丁基黄药分别从沉银母液和浸出渣洗水中置换、沉淀钯，用传统精炼钯的方法得到９９９５％Ｐｄ，钯回收率为９５％。更多还原

【Abstract】 A new technology for recovering silver and palladium from multilayer ceramic capacitor (MLCC) waste was studied. 91% silver and 98% palladium are respectively leached from scrips (200 mesh) at the conditions of 4 mol/L HNO 3, 80℃, 2 h (S/L=1∶3). Silver can precipitate with hydrochloric acid solution from leach solution. The purity of coarse silver bullion obtained from melting silver chloride is 98% and silver recovery rate is 88%. Palladium can be reduced and precipitated respectively from silver raffinate and leach residue scrub solutions by iron powder and butyl xanthate. Palladium can be refined by traditional methods. The purity of palladium is 99.95% and palladium recovery rate is 95%.更多还原