Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1992-10-14
1993-06-01
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C22B 1500
Patent
active
052155714
ABSTRACT:
A non-ferrous matte conversion process is disclosed in which molten non-ferrous matte, essentially nickel and/or copper sulfide and iron sulfide, is provided in a suitable vessel, such as a modified Pierce-Smith converter. The bath is stirred from below with a non-reactive sparging gas, such as nitrogen, and surfaceblown from above with an oxygen-containing gas. A flux is added to the melt to raise a fluid slag. In addition, cold crushed matte is added to the bath. The cold matte acts to maintain the temperature of the bath, so as to prevent overheating which can damage the converter lining. The matte addition also serves as a source for additional converter feed. As the reaction progresses, the slag layer is periodically skimmed, and additions of flux and cold matte are made when necessary. When it is no longer possible to raise a slag, a non-ferrous sulfide matte is obtained having a greatly reduced iron content.
REFERENCES:
patent: 3968956 (1976-07-01), Sugiura et al.
patent: 4045215 (1977-08-01), Leroy et al.
patent: 4073646 (1978-02-01), Kryczun
patent: 4469513 (1984-09-01), Staib
patent: 4614542 (1986-09-01), Kimura et al.
patent: 4830667 (1989-05-01), Marcuson et al.
patent: 5007959 (1991-04-01), Reist et al.
Diaz, "Conversion of Nickel and Sulfur-Containing Copper to Blister" Copper 87 vol. 4, pp. 294-300 (Apr. 1988).
Nagano et al., "Commercial Operation of Mitsubishi Continuous Copper Smelting and Converting Process", Int'l Symposium on Copper Extraction & Refining, 1976, pp. 439-457.
Hall David E.
Landolt Carlos A.
Marcuson Samuel W.
Inco Limited
Londa Bruce S.
Rosenberg Peter D.
Steen Edward A.
LandOfFree
Conversion of non-ferrous matte does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conversion of non-ferrous matte, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of non-ferrous matte will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1811707