Cupellation Cu`pel*la"tion (k[=u]`p[e^]l*l[=a]"sh[u^]n) n. [See {Cupel}.] The act or process of refining gold or silver, etc., in a cupel. [1913 Webster]

Note: The process consist in exposing the cupel containing the metal to be assayed or refined to a hot blast, by which the lead, copper, tin, etc., are oxidized, dissolved, and carried down into the porous cupel, leaving the unoxidizable precious metal. If lead is not already present in the alloy it must be added before cupellation. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Cupellation — is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals, like gold and silver, from base metals like lead, copper, zinc, arsenic,… …   Wikipedia

  • Cupellation — Cupellation. См. Купелирование. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Cupellation — (Hüttenw.), so v.w. Abtreiben 13) …   Pierer's Universal-Lexikon

  • Cupellation — Cupellation, in der Hüttenkunde das Abtreiben des Silbers, die Scheidung des Silbers vom Blei auf der Kapelle …   Herders Conversations-Lexikon

  • cupellation — noun Date: circa 1691 refinement (as of gold or silver) in a cupel by exposure to high temperature in a blast of air by which the unwanted metals are oxidized …   New Collegiate Dictionary

  • cupellation — cu·pel·la·tion (kyo͞o pə lāʹshən) 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. * * *… …   Universalium

  • cupellation — noun /kjuːpəˈleɪʃən/ The assaying of precious metal in a cupel …   Wiktionary

  • cupellation — Смотри Купелирование …   Энциклопедический словарь по металлургии

  • cupellation — cu·pel·la·tion …   English syllables

  • cupellation — /kjupəˈleɪʃən/ (say kyoohpuh layshuhn) noun the process of separating noble metals, especially gold and silver, from impurities by subjecting the impure metal to a blast of hot air in a cupel …   Australian English dictionary

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