Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1992-08-31
1993-11-02
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75669, 75694, C22B 1904
Patent
active
052580555
ABSTRACT:
A process is provided for condensing zinc and other metal vapors from a gaseous stream. A duplex condensing bath is provided, having a bottom layer of molten zinc and a top layer comprising a liquid condensing medium, such as a molten salt. The molten salt is inert to, immiscible with, and less dense than the molten zinc, and has a negligible zinc vapor pressure even at temperatures greater than 700.degree. C. The molten salt condensing medium is splashed into, or otherwise contacted with the gaseous stream, causing condensation of the zinc and other metal vapors, which then partition with the molten zinc layer of the duplex condensing bath.
The process of the present invention is a significant improvement over current molten zinc-type splash condenser systems. The negligible zinc vapor pressure of the molten salt layer permits operating temperatures of 700.degree. C. or more, thereby increasing the efficiency of vapor recovery by limiting the detrimental oxide-forming back reactions that occur at lower operating temperatures.
REFERENCES:
patent: 1030676 (1912-06-01), Moulden et al.
patent: 1712133 (1927-02-01), Breyer
patent: 1790012 (1925-05-01), Mahler et al.
patent: 1871657 (1928-08-01), Bunce
patent: 1873861 (1932-08-01), Bunce
patent: 1962440 (1929-10-01), Ginder et al.
patent: 2048863 (1933-04-01), Handwerk et al.
patent: 2381405 (1945-07-01), Griswold, Jr.
patent: 2457544 (1948-12-01), Handwerk et al.
patent: 2457545 (1945-11-01), Handwerk et al.
patent: 2457546 (1945-12-01), Hardwerk et al.
patent: 2457547 (1945-12-01), Hardwerk et al.
patent: 2457548 (1946-06-01), Handwerk et al.
patent: 2457550 (1948-10-01), Mahler et al.
patent: 2457551 (1948-12-01), Robson
patent: 2457552 (1946-01-01), Handwerk et al.
patent: 2492438 (1949-12-01), Peirce
patent: 2494551 (1950-01-01), Handwerk et al.
patent: 2494552 (1950-01-01), Mahler et al.
patent: 2637649 (1953-05-01), Hardwerk et al.
patent: 3512959 (1970-05-01), Joseph et al.
patent: 3667934 (1972-06-01), Derham et al.
patent: 3823013 (1974-07-01), Lawrence
patent: 3841862 (1974-10-01), Benatt et al.
patent: 4080197 (1978-03-01), Meissner et al.
patent: 4295884 (1981-10-01), Hicter et al.
patent: 4325539 (1982-04-01), Hicter et al.
patent: 4963182 (1990-10-01), Bishop et al.
Bunney David T.
Pargeter John
Andrews Melvyn J.
International Mill Service, Inc.
LandOfFree
Process and system for recovering zinc and other metal vapors fr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and system for recovering zinc and other metal vapors fr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and system for recovering zinc and other metal vapors fr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1755254