cupellation
Britishnoun
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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
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the manufacture of lead oxide by melting and oxidizing lead
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
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
In addition to the separation of the silver the operation extends to the elimination of the last traces of lead, tin, arsenic, &c. which have resisted the preceding cupellation.
From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 2 "Gloss" to "Gordon, Charles George" by Various
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
The alloy which settles at the bottom of the other substances in the pot is carried to the cupellation furnace, and the slags are re-melted with the other silver slags.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
This material can be a partial product from almost any cupellation where oxidation takes place below the melting point of the oxide.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
