Processing, smelting and refining gold | World Gold Council
removes silver removes pgms large scale refiners small scale refiners; cupellation x: x inquartation and parting x: x miller process x x: wohlwill electrolytic process* x: fizzer cell x aqua regis process** pyrometallurgical process *** x: x x *can only be used when initial gold content is about 96% **only suitable when initial silver content