Recovery of Gold,Platinum and Palladium From Platinum-Palladium Concentrate

Gold,platinum and palladium were recovered from platinum-palladium concentrate by the process ofchloridizing leaching-reducing gold with sodium sulfite-precipitating platinum with ammonium chloride-precipitating palladium with ammonia.The results showed that purity of spongy platinum and spongy palladium are over 99.95%,total yield are over 98%.