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.
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
The second wall is carried further when the rooms for the cupellation furnaces, or any other building, adjoin the rooms for the blast furnaces, these buildings being only divided by a partition.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
This silver-lead is carried to the cupellation furnace, in which lead is separated from silver; of these methods I will mention only one, because in the previous book I have explained them in detail.
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
The use of sulphur or antimony sulphide would tend to part out a certain amount of silver, and thus obtain fairly pure bullion upon cupellation.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
