| 摘要 |
In the process, metals or metal alloys, in particular ferroalloys, are won by reduction of metal oxides in a reduction zone which is formed of a coal bed through which reduction gas flows. To obtain metals which possess a high affinity for oxygen, particulate oxidic starting material is conducted under the action of gravitational forces through the coal bed comprising three fixed bed layers (A, B, C), with the provision of a lowest layer (A) comprising degassed coal and covering a liquid bottom zone comprising reduced metal (3) and slag (4). Furthermore, oxygen or an oxygen-containing gas is introduced into a middle layer (B) to form a hot reaction gas consisting essentially of CO, and combustion gases comprising carbon particles and oxygen or oxygen-containing gas are introduced into a topmost layer (C). <IMAGE>
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