Direct sulphidization fuming of zinc

Details Direct sulphidization fuming of zinc Direct sulphidization fuming of zinc

1993-09-20

1994-12-13

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 103, 75659, 75696, C22B 1904

Patent

active

053726308

ABSTRACT:
A process for treatment of zinc sulfide or other zinc bearing feed materials in conjunction with an iron sulfide containing mineral or compound to effect a separation of zinc from iron by fuming on either zinc and sulphur vapor or zinc sulphide vapor. The vapor is stripped and transported by a carrier gas from the mineral or a molten matte formed from the mineral. The process is operated at a temperature in the region of 1250.degree. to 1400.degree. C. and at a partial pressure of oxygen in the region of 10-.sup.7 to 10-.sup.11 bar. The process is conducted in the presence of a liquid matte phase which contains at least iron sulphide and which is intimately mixed in a bath with a slag phase.

REFERENCES:
patent: 1669406 (1928-05-01), Anderson
patent: 3298825 (1967-01-01), Lange
patent: 4595574 (1986-06-01), Matsuoka

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