Рет қаралды 103,903
Showing the cupellation/oxidation process for metallic lead holding precious metals. The gold and silver contained in the lead is recovered as the lead oxidizes in the cupels. The cupels act as a sponge for the oxides, but the metal does not permeate into the cupel. Once all the lead has been converted to an oxide and absorbed the precious metal bead (gold and silver) is left as a visible bead. There was a surprising amount of gold and silver left in the lead from the old cupels and previous refining process.
** For part 1: • Gold From Lost Lead Pt... **
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