Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1990-11-21
1992-01-28
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75697, 266227, C22B 100
Patent
active
050840940
ABSTRACT:
The present invention relates to a method for cleaning a liquid metal bath, in particular a zinc or zinc-aluminum bath intended for the continuous production of a steel strip coated by immersion in a coating zone (5a), according to which method the metal coating bath (2) is cycled continuously between the coating zone (5a) and a cleaning zone (5b), the rise of solid intermetallic compounds contained in the said bath to the surface is brought about in the cleaning zone (5b), the rise of the said compounds in accelerated and the cleaned bath (2), the iron content of which is close to or below the solubility limit, is led back to the zone (5a).
The invention also relates to an apparatus for carrying out the method.
REFERENCES:
patent: 2734819 (1956-02-01), Williams
Patent Abstracts of Japan, vol. 13, No. 408 Jpn. -A-01 147 047 (Sumitomo Metal Ind. Ltd.) 08-06-1989.
Patent Abstracts of Japan, vol. 13, No. 408 Jpn. -A-01 147 046 (Sumitomo Metal Ind. Ltd.) 08-06-1989.
Patent Abstracts of Japan, vol. 12, No. 270 Jpn. -A- 63 50 454 (Nippon Steel Corp.).
Journal of Metals, JOM, vol. 34, No. 7, Jul. 1982, pp. 7-8, Warrendale, Pa., U.S.; "NKK develops galvanizing bath to remove dross".
Patent Abstracts of Japan, vol. 12, No. 37 Jpn. -A-62 185 863 (Nippon Steel Corp.).
Patent Abstracts of Japan, vol. 13, No. 39 Jpn. -A-63 238 252 (Sumitomo Metal Ind. Ltd.).
Commun Pierre
Francois Bernard
Haaser Robert
Hennechart Jean-Paul
Rosenberg Peter D.
Sollac
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