发明名称 |
PROCESS AND APPARATUS FOR THE DIRECT REDUCTION OF IRON OXIDES IN AN ELECTROTHERMAL FLUIDIZED BED AND RESULANT PRODUCT |
摘要 |
<p>A method and an apparatus ( 50 ) for producing direct reduced iron ( 37 ) from dry pellets ( 25 ) composed of iron oxide and carbonaceous material. A mixture of pellets ( 25 ) and free coke particles ( 38 ) with weight relation from 3:1 to 5:1 is fed into the top of an electrothermal fluidized bed ( 32 ) that is fluidized by nitrogen. By exposing pellets ( 25 ) in the electrothermal fluidized bed ( 32 ) to temperatures of between approximately 850-1,100° C. for an average period of between approximately 15-60 minutes, the volatiles are removed and the pellets ( 25 ) metallized. Reduced pellets ( 37 ) mixed with free coke ( 38 ) are discharged from the bottom of fluidized bed ( 32 ) and cooled. The reduced iron pellets ( 37 ) are physically separated from any free coke ( 38 ) and the free coke ( 38 ) is recycled back into the fluidized bed ( 32 ).</p> |
申请公布号 |
EP1529121(A1) |
申请公布日期 |
2005.05.11 |
申请号 |
EP20030723770 |
申请日期 |
2003.03.19 |
申请人 |
SUPERIOR GRAPHITE CO. |
发明人 |
GOLDBERGER, WILLIAM, M.;ZAK, MARK, S. |
分类号 |
C21B13/00;B01J8/00;B01J8/18;B01J8/42;C21B13/12;C22B1/245;C22B4/08;C22B5/10;C22B5/14;F27B15/00;F27B15/04;F27B15/08;F27B15/09;F27B15/10;F27B15/14;F27D3/00;F27D3/16;F27D7/06;F27D13/00;F27D15/02;F27D17/00;F27D99/00;H05B3/00;H05B3/60;(IPC1-7):C21B13/12;C22B34/22;C22B23/00;C22B34/36;C22B34/32 |
主分类号 |
C21B13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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