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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
C22B19/00—Obtaining zinc or zinc oxide
C22B19/34—Obtaining zinc oxide
C22B19/36—Obtaining zinc oxide in blast or reverberatory furnaces
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FR415519D1909-05-241910-05-04Procédé pour séparer de métaux, ou substances métallifères, non volatils des métaux, ou substances métallifères, volatils
ExpiredFR415519A
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