cupellation СЪЩ
- cupellation (metallurgical process of separating noble metals from base metals) bergb
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The gold and silver can then be recovered with cupellation.
en.wikipedia.org Cupellation involved removing the lead from a silver-rich alloy by oxidising the lead to litharge, leaving the silver behind.
en.wikipedia.org So the primary production of silver requires the smelting and then cupellation of argentiferous lead ores.
en.wikipedia.org The older and relatively simple method of cupellation can then be used to separate the silver from the lead.
en.wikipedia.org Metallic lead was demanded in quantity for silver cupellation, and the resulting litharge could be used directly by glassmakers.
en.wikipedia.org