cupellation

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Related to Cuppelation: fire assay, Pattinson process, Parkes process

cu·pel·la·tion

 (kyo͞o′pə-lā′shən)
n.
A refining process for nonoxidizing metals, such as silver and gold, in which a metallic mixture is oxidized at high temperatures and base metals are separated by absorption into the walls of a cupel.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cupellation

(ˌkjuːpɪˈleɪʃən)
n
1. (Metallurgy) 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. (Metallurgy) the manufacture of lead oxide by melting and oxidizing lead
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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