INDUSTRY|iron, steel and other metal industries|metallurgical industry
- mínghlanadh tine Tagairt Faomhadh an téarma seo mar chuid de Thionscadal Lex
- ga
- Feuerraffination
- de
- Sainmhíniú Entfernen von Beimengungen aus der Schmelze durch selektive Oxidation Tagairt Stephan Hasse (Hrsg.): Gießerei-Lexikon. Schiele und Schön: Berlin, 19. Auflage, 2008, S.388
- fire refining
- en
- Sainmhíniú further purification step applied to the crude metal (blister copper) produced by the conversion stage, involving the addition of air and then a reducing agent (e.g. hydrocarbons) to reduce any oxide present Tagairt "COM-Terminology Coordination, based on:European Commission. JRC. Best Available Techniques (BAT) Reference Document for the Non-Ferrous Metals Industries, http://eippcb.jrc.ec.europa.eu/reference/BREF/NFM_Final_Draft_10_2014.pdf [7.12.2015]"
- Nóta Fire refining is achieved by first blowing air through the molten metal to oxidise impurities and to remove final traces of sulphur (oxidation stage). A small amount of slag is produced at this stage that needs to be removed prior to the next stage. In the next stage (reduction or 'poling'), a source of reducing agent, such as natural gas or propane, is then added to partially remove the oxygen that is dissolved in the liquid copper. Ammonia may also be used as a reducing agent, but has been reported to increase NOX levels.
- affinage thermique
- fr
- Sainmhíniú procédé visant à refondre le blister en l'oxydant pour éliminer les impuretés sous forme d'oxyde qui se volatilisent Tagairt "Institut européen du cuivre > Extraction et métallurgie http://copperalliance.fr/le-cuivre/extraction-et-metallurgie [23.5.2016]"