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1241 products Alibaba.com offers 1241 gold refining machine products. About 14% of these are High Gold Refining Machine Gold Jig Machine Factory sales.
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Nitric acid can be used to refine gold but you must be careful during the process. With the gold inside the beaker carefully add 30 mL of nitric acid for every The mixture of gold and aqua regia will become extremely hot as the gold Dip a stirring rod into the acid solution and dab the end of the rod onto a paper towel.
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