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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
C22B1/00—Preliminary treatment of ores or scrap
C22B1/02—Roasting processes
C22B1/08—Chloridising roasting
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FR456063D1912-03-291913-03-27Procédé perfectionné pour le traitement et la séparation des sulfures composés contenus dans les minerais
ExpiredFR456063A
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