Recovery of palladium from a waste silver electrolyte by precipitation was researched.The results show that under the optimum process conditions,the palladium precipitation efficiency is99.12%,and the palladium concentration in the waste electrolyte can reduce to 0.52 mg/L from283 mg/L.The palladium content is 28.83% in the rich-palladium residue.The filtrate precipitating palladium is electrolyzed for extracting silver.The obtained silver powder contains palladium of (1~5)×10~(-6) which meets the quality s...