The 16th century process of separating copper and silver ... in Theophilus'' On Divers Arts he makes a possible reference to liquation: ''When the stone begins to ...
Removing the goldbearing rock from the ground is just the first step. To isolate pure gold, mining companies use a complex extraction process. The first step in this ...
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Each process relies on the initial grinding of the gold ore, and more than one process may be used on the same batch of gold ore. ... Separating the gold from the ore
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This attractive method of separating gold from silver has made some headway, and will in many cases replace other methods of parting. The electrolyte used is a ...
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