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C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
C22B9/04—Refining by applying a vacuum
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B19/00—Obtaining zinc or zinc oxide
C—CHEMISTRY; METALLURGY
C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
C22B4/04—Heavy metals
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FR503564A1917-07-111917-07-11Nouveau procédé de traitement permettant d'extraire les métaux de leurs minerais, crasses, déchets ou alliages
ExpiredFR503564A
(fr)
Procédé pour le traitement au four électrique de minerais, tels que des minerais de plomb, zinc, cuivre ou autres, et four électrique pour la réalisation du procédé
Procédé pour extraire d'alliages métalliques leurs composants ou des alliages d'une autre composition, et four pour l'exécution de ce procédé
Procédé de traitement des minerais de plomb, zinc et autres métaux connexes, ainsi que des crasses, cendres et résidus métallurgiques pouvant contenir ces métaux