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reverse electroplating for gold recovery process

Jan 03, 2013· I used the same 6 volts plus two copper wires. made a solution of vinegar and salt.placed the gold plated medallion in the solution and left it reverse plate for 1.5 hours.As the time went by, I noticed small gold flakes floating around. As time continued, I noticed black crystals accumulating on the -ve copper wire

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