Technical Study on Recycling of Gold and Silver from Aqua-Regia-Treated Gold Slag
Received:March 28, 2016  Revised:April 26, 2016
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KeyWord:aqua-regia-treated residue; gold; silver; recycling
LIU Ya-jian 紫金矿业集团股份有限公司
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      Three processes including refining with aqua regia, direct slag-making smelting, as while as silver replacement, nitric acid dissolving, and gold dissolving with aqua regia, were explored to treat aqua-regia-treated residue. The results show that residue of the first two methods needs retreating. Recovery rate of gold and silver of the third method is 99.97% above with the advantages of simple technological process and high recovery of gold and silver.