| 摘要 |
<p>A method and apparatus for reducing particulate lron oxide to molten iron utilizes solid carbonaceous fuel as reductant in a shaft type reducing furnace 10, in which a furnace burden 22 is formed of a mixture of iron oxide lumps or pellets and particulate solid fuel. Reacted top gas is upgraded and recirculated through the burden in counterflow relationship, entering at gas inlets 78, thereby heating and reducing the burden. The heat for reduction is generated by passing electric current through the burden. A portion of the heat for melting of reduced iron and a supplemental source of hot reducing gas is provided by oxy-fuel burners 94 located in the shaft furnace above the molten iron pool 23. <IMAGE></p> |
