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Extracting Elemental Gold from Gold-Bearing Waste

     

The specific process is as follows: First, crush and grind the gold-bearing waste into powder, then dissolve the powder in aqua regia solution. Next, add an alkaline solution to neutralize the pH of the mixed system, and filter out the precipitates. Add ATRZ solution to the obtained clear and transparent solution containing chloroaurate ions. After stirring, collect the produced solid precipitate through filtration, wash it with water and dry it to obtain an intermediate product. 

Add water to the intermediate product, heat the mixture under stirring, then add concentrated hydrochloric acid dropwise for reaction to finally obtain elemental gold. This method has the advantages of simple operation, rapid extraction process and extremely high extraction efficiency.

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