The cupellation process is used in the metall | vedclass

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(B) The cupellation process is a refining method used for the purification of noble metals like $Silver$ $(Ag)$ from base metal impurities like $Lead$

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Silver

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(B) The cupellation process is a refining method used for the purification of noble metals like $Silver$ $(Ag)$ from base metal impurities like $Lead$ $(Pb)$. In this process,the impure metal is heated in a cupel (a shallow porous vessel) in a blast of air. The base metal impurities oxidize to form volatile oxides (e.g.,$PbO$),which are either absorbed by the cupel or blown away,leaving behind the pure noble metal.

The cupellation process is used in the metallurgy of:

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