Claims
- 1. An apparatus for producing sponge iron from iron ore comprising: a melt-down gasifier or coal-to-gas plant, a shaft furnace having a top portion of a first cross section, an inlet in said top portion for introducing iron ore thereinto and an outlet for removing top gas therefrom; a base portion of a second cross section larger than said first cross section and having an outlet for sponge iron; a bustle plane between said top and base portions; first means at said bustle plane for introducing a first quantity of reducing gas containing CO from said melt-down gasifier or coal-to-gas plant into said furnace with a first temperature of from 750.degree. to 900.degree. C.; second means connected to said base portion for introducing thereinto a second quantity of reducing gas containing CO also from the gasifier or coal-to-gas plant with a second temperature in a range of from 650.degree. C. to 750.degree. C. at said second temperature CO being separated into carbon and carbon dioxide to thereby carbonize iron ore in said base portion to form sponge iron.
- 2. An apparatus according to claim 1, comprising means for introducing cooling gas into said first and second means.
- 3. An apparatus according to claim 1, wherein said bustle plane and said second means for introducing reducing gas are spaced from each other by a given distance, and said base portion has a given diameter, the ratio of said distance to said diameter being between 0.5 and 1.0.
- 4. An apparatus according to claim 1 wherein said second means is a downcomer means for introducing reducing gas from said melt-down gasifier or coal-to-gas plant to said base portion.
Priority Claims (1)
Number |
Date |
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3437913 |
Oct 1984 |
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Parent Case Info
This is a division of application Ser. No. 06/786,691, filed Oct. 11, 1985, now U.S. Pat. No. 4,854,967.
US Referenced Citations (3)
Divisions (1)
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Number |
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6786691 |
Oct 1985 |
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