Wohlwill Process: Electrochemical in Gold Refining.

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The Wohlwill process, invented by Emil Wohlwill in 1874, is an industrial-scale chemical parting gold procedure used to refine gold to the highest degree of purity (99.999%). This electrochemical method involves using a cast gold ingot as an anode and small sheets of pure gold or stainless steel as cathodes. A current is applied, causing gold and other metals to dissolve at the anode, with pure gold being plated onto the cathode through ion transfer. The resulting gold is 99.999% pure, surpassing the purity achieved by the Miller process. The Wohlwill process is crucial for industrial gold production requiring the highest purity, particularly in applications like electronics. However, for lower purity gold, the Miller process is often favored due to its simplicity, quicker turnaround times, and the absence of a large gold inventory in the form of chloroauric acid.

In this video,Aurumlife shares insights into the gold refining process using a Wohlwill cell. The anodes and cathodes, previously prepared and rolled on the mill, are arranged in the electrolyte. The anodes, connected to a positive charge, dissolve and plate onto the cathode, causing them to become shorter. The creator personally rinses and welds the anodes using a jeweler’s welder to maintain the process. The plated cathode showcases pure elemental gold. The method is highlighted for its ability to ensure high purity without doubts, especially compared to wet chemical methods used in more professional setups. The creator encourages comments, shares, and questions to further assist viewers in their gold refining endeavors.
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