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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
C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
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
C22B4/08—Apparatus
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FR738189D1931-07-101932-06-04Procédé et dispositif pour le traitement électrothermique de matières contenant ou dégageant des oxydes volatils
ExpiredFR738189A
(fr)