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
the manufacture of lead oxide by melting and oxidizing lead
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use cupellation in a sentence
This process is called cupellation, from being performed in a small crucible called a cupell.
When calcined with the imperfect metals, it unites with them, and has the same effect as lead in cupellation.
Silver is extracted from lead by means of the process of cupellation.
Silver remains after cupellation in flattened elliptical buttons, adhering but only slightly to the cupel.A Textbook of Assaying: For the Use of Those Connected with Mines. | Cornelius Beringer and John Jacob Beringer
These figures are based on those given by Plattner, and apply only to buttons of such shape as those left after cupellation.A Textbook of Assaying: For the Use of Those Connected with Mines. | Cornelius Beringer and John Jacob Beringer