Steelmaking method with oxygen from rectification of air

Details Steelmaking method with oxygen from rectification of air Steelmaking method with oxygen from rectification of air

1997-04-30

1999-11-09

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75 104, 75466, 75503, C21B 500, C21C 7068

Patent

active

059806079

ABSTRACT:
A method of supplying both an oxygen steelmaking process and an ironmaking process with oxygen. The oxygen is separated from air by rectification of the air. A first stream of oxygen from the rectification to the steelmaking process. A second stream of oxygen is also supplied from the rectification to the ironmaking process. The first and second streams of oxygen are both withdrawn from essentially the same stage of the rectification and both contain from about 97 to about 98% by volume of oxygen and less than about 100 parts per million of nitrogen.

REFERENCES:
patent: 5538534 (1996-07-01), Guillard et al.

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