发明名称 |
Process for the thermal treatment of granular iron ore prior to the reduction |
摘要 |
The wet granulated iron ore is initially conducted through a drying zone. The ore leaves the drying zone at a temperature of 120-400° C. The ore is then heated in direct contact with hot gas to temperatures of 700-1,100° C. before being delivered to a reduction zone. The ore coming out of the drying zone is fully or partially guided through a separating device so as to separate the ore into fine and coarse grain fractions. The fine-grained ore fraction is conveyed to a granulating device so as to produce an iron ore granulate which is conducted to the drying zone. The coarse-grained ore fraction is heated to temperatures of 700-1,100° C. before it is guide into the reduction zone. |
申请公布号 |
ZA9803604(B) |
申请公布日期 |
1998.11.02 |
申请号 |
ZA19980003604 |
申请日期 |
1998.04.29 |
申请人 |
METALLGESELLSCHAFT AKTIENGESELLSCHAFT |
发明人 |
ALI BEYZAVI;MARTIN HIRSCH |
分类号 |
B01J8/18;C21B13/00;C22B5/14 |
主分类号 |
B01J8/18 |
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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