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how to observe reliable structure ore processing plant

The products includes five series: crusher, sand making machine, powder grinding mill, mineral processing equipment and building materials equipment.The two gold refining methods most commonly employed to derive pure gold are: the Miller process and the Wohlwill process. The Miller process uses gaseous chlorine to extract impurities when gold is at melting point; impurities separate into a layer on the surface of the molten purified gold..

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