How to separate your gold from your Black Sand Concentrates .Mar 28, 2012 . this video show's you how to separate your blonde sands and gold . You hit that with nitric acid which will eat the ferrite but leave the platinum.remove black sand with nitric acid,Recovering Gold from Black Sands - DocCopperRecovering gold from concentrates or black sands. . Mechanical separation is simply removing the gold from the surrounding . past, involves the cleaning the concentrate with nitric acid then recovering gold by amalgamation with mercury.How To Clean Gold with Nitric Acid - 911 MetallurgistOct 20, 2015 . This enables the nitric acid to clean the gold, such as gold nuggets or free gold taken from black sands. Most gold found in nature contains.
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