Method for reducing iron losses in an iron smelting process
A process of smelting iron that comprises the steps of: (a) introducing a source of iron oxide, oxygen, nitrogen, and a source of carbonaceous fuel to a smelting reactor, at least some of said oxygen being continuously introduced through an overhead lance; (b) maintaining conditions in said reactor to cause (1) at least some of the iron oxide to be chemically reduced, (2) a bath of molten iron to be created and stirred in the bottom of the reactor, surmounted by a layer of slag, and (3) carbon monoxide gas to rise through the slag; (c) causing at least some of said carbon monoxide to react in the reactor with the incoming oxygen, thereby generating heat for reactions taking place in the reactor; and (d) releasing from the reactor an offgas effluent, is run in a way that keeps iron losses in the offgas relatively low. After start-up of the process is complete, steps (a) and (b) are controlled so as to: (1) keep the temperature of the molten iron at or below about 1550 C and (2) keep the slag weight at or above about 0.8 ton per square meter. 13 figs.
- Research Organization:
- American Iron and Steel Institute
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC07-94ID13284
- Assignee:
- Steel Technology Corp., Washington, DC (United States)
- Patent Number(s):
- US 5,885,322/A/
- Application Number:
- PAN: 8-823,012
- OSTI ID:
- 335447
- Resource Relation:
- Other Information: PBD: 23 Mar 1999
- Country of Publication:
- United States
- Language:
- English
Investigation on the effect of Zn on the behaviour of S in the iron bath smelting reduction process
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journal | January 1993 |
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