 The two gold refining methods most commonly employed to derive pure gold are: the Miller process and the Wohlwill process The Miller process uses gaseous chlorine to extract impurities when gold is at melting point; impurities separate into a layer on the surface of the molten purified gold Refining gold from karat scrap step by step beginner Apr 00, 0000· This process is not for refining gold plated or gold filled items get Lazer Steve's video for refining gold filled scrap it is excellent Edit to add important information The very first step is to 