C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/324, 39/4
C22B 19/06 (2006.01) C22B 13/02 (2006.01) C22B 19/04 (2006.01) C22B 19/16 (2006.01) F27B 1/02 (2006.01) F27B 1/04 (2006.01)
Patent
CA 1308918
ABSTRACT A furnace and process for recovery of zinc from sulphide materials, in which zinc sulphide material together with an oxidizing gas is introduced into a first of two laterally adjacent zones formed by a gas space of the furnace being divided by an upwardly extending fluid-cooled wall which extends into a slag layer, thereby producing zinc oxide dissolved in the slag and oxides of sulphur, with oxides of sulphur being removed with flue gases from the first zone. Conditions are maintained such that circulation and mixing of the slag occurs between the two zones; with a reductant being introduced into the second zone to reduce zinc oxide in the slag to zinc metal vapour which is removed with reducing flue gases.
523211
Floyd John Millice
Lightfoot Brian William
Ausmelt Pty. Ltd.
Gowling Lafleur Henderson Llp
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