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Gold Prices Heading to Uncharted Territory

Gold Prices Heading to Uncharted Territory

The uses gaseous chlorine to extract impurities when is at melting point impurities separate into a layer on the surface of the molten purified . The is rapid and simple, but it produces of only about 99.5 percent purity. The Wohlwill process increases purity to about 99.99 percent by electrolysis

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