cupellation

British  

/ ˌkjuːpɪˈleɪʃən /

noun

1. the process of recovering precious metals from lead by melting the alloy in a cupel and oxidizing the lead by means of an air blast

2. the manufacture of lead oxide by melting and oxidizing lead

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Example Sentences

Various assays are described and directions given for crucible, scorification, and cupellation tests.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

From the context it would not appear to mean hearth-lead—saturated bottoms of cupellation furnaces—for such material would not contain appreciable silver.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

Therefore, the metallurgy of this paragraph becomes a simple melting of an argentiferous lead ore, its subsequent cupellation, with a return of the litharge to the furnace.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

If this be the case, then cupellation was practised in 2500 B.C.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

This charge of 120 centumpondia in the cupellation furnace would normally make more than 110 centumpondia of litharge and 30 of hearth-lead, i.e., saturated furnace bottoms.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius