Table of Contents Before processing by the gold refinery, gold can be extracted from ore by the following series of operations: Coarse crushing; Fine grinding; Straking for free gold; Flotation; Concentrate roasting; Straking for free, gold; Cyanidation of concentrates; Precipitation of gold from cyanide solution. The last operation is performed in a Merrill-Crowe radial leaf … Continue reading Gold Refinery Procedures