Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1983-06-28
1985-03-19
Doll, John
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
423 27, 423 41, 423 98, 423109, 423140, 423150, 423567A, 75101R, 204119, C22B 1900, C01G 500, C01G 2100, C01B 1702
Patent
active
045057443
ABSTRACT:
A process for recovering zinc from zinc-containing sulphidic material which also contains iron and lead includes leaching the material under oxidizing conditions at a temperature in the range of from about 130.degree. to about 155.degree. C. in aqueous sulphuric acid solution with a stoichiometric excess of sulphuric acid relative to the zinc content of the material of from about 50 to about 100% to produce an undissolved residue containing a major proportion of the lead and a leach solution containing a major proportion of the zinc and iron. The sulphur and lead containing residue is separated from the zinc and iron containing leach solution. Elemental sulphur is physically separated from the remaining lead-containing residue, and the remaining lead-containing residue is recovered. The zinc and iron containing leach solution is treated to recover zinc by feeding the solution to another process in which zinc-containing material is treated to recover zinc and which includes an iron-precipitation step.
REFERENCES:
patent: 3867268 (1975-02-01), Kawulka et al.
patent: 4063933 (1977-12-01), Peters
patent: 4440569 (1984-04-01), Weir et al.
patent: 4443253 (1984-04-01), Weir et al.
Bolton Gerald L.
Masters Ian M.
Weir Donald R.
Delbridge Robert F.
Doll John
Fors Arne I.
Sherritt Gordon Mines Limited
Stoll Robert L.
LandOfFree
Recovery of zinc from zinc containing sulphidic material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Recovery of zinc from zinc containing sulphidic material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of zinc from zinc containing sulphidic material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-751438