| 摘要 |
<p>A method for injecting fine iron ore in a smelting reducing process is disclosed, in which the carrier gas for the iron ore is the discharge gas from a melter without the need of separate carrier gas. It includes the steps of prereducing iron ore in a prereduction furnace (12), melting and reducing it in the melter gasifier; spouting the cooled and cleaned fine iron ore through a recycling system (15) and a melting burner (16) into the melter gasifier (11). A part of the discharge gas is supplied through a venturi scrubber (17), a first compressor (18) and a tube (19) into tube (13). A part of the compressed gas circulating through tube (19) is recompressed by means of a second compressor (21) and the fine iron ore is recirculated into the tube (13) by the recompressed gas by means of a pneumatic fine iron or conveying system (22).</p> |
