Recovery of metalic gold with polyelectrolyte/metal ions/chloride gases from gold scrap in washing process

Some gold particules transfer to aqueous solution by ultrasonic washing process during the producing in jewellery. It is important to recovery of gold from ultrasonic bath solution that containing 5-10 % of total gold amount of polishing scrap. In this work, metalic gold particules in the aqueous scrap solution were investigated by precipitation with cationic, anionic, nonionic polyelectrolytes and Fe+3, Al+3 coagulants which are in the range of pH 3,0-11,0. Moreover the solubility of metalic gold in chloride gas was investigated in the aqueous solutions. Keywords: Gold, scrap, polyelectrolyte, coagulant, chloride gas, precipitation