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Gold Refining | The Wohlwill Process

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Wohlwill Process and High Purity Levels

  • The Wohlwill process produces gold of a purity greater than 99.99 percent. The Wohlwill process involves electrolysis, in which an ingot of more than 95 percent gold is suspended in chloroauric acid. The ingot is called the anode; the cathodes, 24 karat gold strips, are also floating in the chamber. Electric current is run through the chloroauric acid, and the acid and electrolysis dissolve the anode and collect pure gold on the cathodes. These cathodes are taken out and melted down into fine gold. Often industry locations use first the Miller process followed by the Wohlwill process, although the Wohlwill process is more expensive, requires more equipment and requires high gold inventories.

Written by Robert L. Wilson

October 18, 2011 at 7:18 am

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