Electro-Recovery of Gold(III) from Aqueous Solutions and Refractory,Boulangeritet(Pb5Sb4S_(11))Ore

摘要

A very simple cell containing two stainless steel static sheet electrodes has been employed for electrolytic recovery of gold from a stirred aqueous solution containing 50 ppm Au.Cell potential,pH,stirring,temperature,time of electrolysis and addition of ammonia have been studied as the main parameters for optimization.The results show that the maximum deposition of 99.6% gold occurs at a cell potential of 2.8 V,pH 6.4,temperature 40 °C in an optimum electrolysis time of only 60 minutes.The method was successfully applied to a refractory gold ore with an average gold recovery of 95.1%.