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gold mining process to jewelry

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gold mining process to jewelry

Gold extracted byamalgamation or cyanidationcontains a variety of impurities, includingzinc,copper,silver, andiron. Two methods are commonly employed for purification: the Miller process and the Wohlwill process. The Miller process is based on the fact that virtually all the impurities present in gold combine with gaseous chlorine more readily than gold does at temperatures equal to or greater than …

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