cupellation

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İngilizce - Türkçe
İngilizce - İngilizce
The assaying of precious metal in a cupel
The act or process of refining gold or silver, etc
in a cupel
Separation of gold or silver from impurities by melting the impure metal in a cupel (a flat, porous dish made of a refractory material) and directing a blast of hot air on it in a special furnace. The impurities, including lead, copper, tin, and other unwanted metals, are oxidized and partly vaporized and partly absorbed into the pores of the cupel
cupel
{n} a vessel used in refining metals, to absorb the dross
cupel
{f} heat or refine in cupel
cupel
A small circular receptacle used in assaying gold or silver with lead
cupel
{i} small porous cuplike bowl made of bone ash used in separation of metals
cupel
To refine by means of a cupel
cupel
small porous bowl made of bone ash used in assaying to separate precious metals from e g lead
cupel
A shallow porous cup, used in refining precious metals, commonly made of bone ashes (phosphate of lime)
cupellation