| 摘要 |
Apparatus for producing molten pig iron by direct reduction of iron ore, comprises (i) a metallurgical vessel (13, 14), in which with supply of coal and oxygen the iron ore undergoes a final reduction with production of a process gas and said process gas undergoes a partial post-combustion, and (ii) a melting cyclone (12) in which the iron ore undergoes a pre-reduction and is melted. To improve the control of the thermal flows and to reduce maintenance, the vessel has (a) a top part (13), in which the partial post-combustion of said process gas takes place, in the form of a pressure-resistant hood having an interior wall (17) comprising cooling water pipes, and (b) a bottom part (14) for accommodating an iron bath having a slag layer in which said final reduction of said iron ore takes place, the bottom part having an internal refractory lining (15) and means (16) for water cooling the internal refractory lining. <IMAGE> |
