Smelting process for the production of iron

Details Smelting process for the production of iron Smelting process for the production of iron

2004-01-20

2010-06-01

Kastler, Scott (Department: 1793)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

Reexamination Certificate

active

07727304

ABSTRACT:
A process for producing iron metal and slag by smelting iron-containing source material, having iron present as oxide and/or a partially metalized state, in a reactor containing a molten bath comprising or having a slag phase, utilises injection of fuel/reductant and oxygen-containing gas into the slag, by at least one top-submerged lance, to generate heating and reducing conditions in at least one reducing region in the bath. The source material is fed to the reactor, together with additional reductant and with flux, at or adjacent to the at least one reducing region, to subject the source material to smelting reduction which generates combustion gases comprising CO and H2. The rates of injection of the oxygen-containing gas and fuel/reductant by said at least one lance are controlled to achieve required, sufficient reducing conditions; and, in the reactor above the bath, the combustion gases generated by the smelting are post-combusted. The controlling of step (c) is conducted to result in the injected oxygen-containing gas having an oxygen content of from about 40 volume % to about 100 volume % and sufficient for a degree of combustion in excess of 60 wt % of the fuel/reductant injected by the at least one lance.

REFERENCES:
patent: 4968661 (1990-11-01), Teller et al.
patent: 5251879 (1993-10-01), Floyd et al.
patent: 5498277 (1996-03-01), Floyd et al.
patent: 647669 (1994-03-01), None
patent: 656228 (1995-01-01), None
patent: 1067201 (2001-01-01), None
patent: 62188712 (1987-08-01), None
patent: 63038506 (1988-02-01), None
patent: 01195211 (1989-08-01), None
patent: 01205013 (1989-08-01), None
patent: 07502566 (1995-03-01), None
patent: WO 01/64960 (2001-09-01), None
patent: WO 02/24963 (2002-03-01), None
English Language Abstract for JP 63-038506.
English Language Abstract for JP 01-195211.
English Language Translation for JP 1205013.
English Language Abstract for JP 62-188712.

Affiliated with

Also associated with

Rating

Smelting process for the production of iron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Smelting process for the production of iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smelting process for the production of iron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4150208