Table of ContentsPast Gold Refinery PracticeClean-upRoastingSmeltingBarring FurnaceGranulation & Sulphuring of BullionBest Gold Refining MethodsSilver & Gold Smelting PracticeMatte SmeltingTreatment Times and QuantitiesAmalgamationFlotation StrakesRoasted Concentrate StrakesRetorting of Amalgam 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 … Continue reading Gold Refinery Procedures