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.
However, possibly the sulphur and copper could be largely abstracted in the skimmings from the cupellation furnace, these being subsequently liquated in the "third" furnace.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
The coppery skimmings from the cupellation furnace are referred to again in Note 28, p.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
If we still maintain that molybdaena is hearth-lead, and galena is its equivalent, then this passage becomes clear enough, the second melting being cupellation.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
The test to be applied to the regulus by way of cupellation and parting of a sample with nitric acid, requires no explanation.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius
The cupellation process is of great antiquity, and the separation of silver from lead in this manner very probably antedates the separation of gold and silver.
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.
