Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
Patent
1993-03-26
1994-11-22
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or treating free metal
75571, 75575, 75581, C21B 1100
Patent
active
053665368
ABSTRACT:
Disclosed is a method of melting a metal, which can demonstrate improved heat efficiency, increased yield and minimized pollutive gas generation. In this method, a metallic material stacked in a melting furnace is melted by heating it directly with the flame from a fuel burner using an oxygen gas having a purity of 60 to 100% as a combustion assisting gas. The oxygen gas is burned at an oxygen-to-fuel ratio of 0.55 to 0.99, while the unburned portion of the combustion gas is allowed to burn by O.sub.2 supplied separately through oxygen lances. Meanwhile, the metallic material is preheated by burning the unburned portion of the combustion gas, whereas the combustion assisting gas is heated before it is fed to the burner.
REFERENCES:
patent: 1376479 (1921-05-01), Stoughton
patent: 4681535 (1987-07-01), Kobari et al.
patent: 4758270 (1988-07-01), Bardenheuer
patent: 4786321 (1988-11-01), Hoster et al.
patent: 4928605 (1990-05-01), Suwa et al.
Database WPI, Week 13, 1970; AN 70-21549R & CA-A-838 032.
Patent Abstracts of Japan, vol. 6, No. 113 (M-138) Jun. 24, 1982 & JP-A-57 041 521 (Daido Steel Co. Ltd) Mar. 8, 1982.
Kobayashi Nobuaki
Suwa Toshio
Andrews Melvyn J.
Nippon Sanso Corporation
LandOfFree
Method of melting metals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of melting metals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of melting metals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1988587