发明名称 |
VERFAHREN ZUR GLEICHZEITIGEN GEWINNUNG VON ELEKTRISCHER ENERGIE UND ROHEISEN |
摘要 |
<p>The invention relates to a method of combined production of electrical energy and crude iron, comprising reducing iron oxides while keeping the temperature below the melting point of the crude iron during a pre-reduction and above said melting point during a final reduction. The pre-reduction is made by introducing carbonaceous material and the material containing iron oxides into a fluid bed containing solid carbonaceous material, producing reducing gases in the fluid bed by partial combustion of the carbonaceous material with air/or oxygen gas, pre-reducing the iron oxides by said reducing gases until the material has achieved a metallization degree of 30-80 %, most of the heat requirement of the pre-reduction being covered by said combustion. The pre-reduced material is finally reduced and molten by being brought into contact with carbon, and the heat requirement of this final reduction and melting process is covered by electric heating. A substantial part of the exhaust gases from the reduction operations is passed to a thermal power station to generate electrical power therein.</p> |
申请公布号 |
DE2253228(A1) |
申请公布日期 |
1973.05.17 |
申请号 |
DE19722253228 |
申请日期 |
1972.10.30 |
申请人 |
STORA KOPPARBERGS BERGSLAGS AKTIEBOLAG, FALUN (SCHWEDEN) |
发明人 |
COLLIN, PER HARALD, FALUN;JOHANSSON, FOLKE KARL EVALD, BORLAENGE |
分类号 |
C21B11/00;C21B11/10;C21B13/00;C21B13/12;C21B13/14;(IPC1-7):C21B3/00 |
主分类号 |
C21B11/00 |
代理机构 |
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代理人 |
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地址 |
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