Method and device for producing liquid pig iron or liquid steel precursor products

Method and device for producing liquid pig iron or liquid steel precursor products

  • CN 102,057,059 A
  • Filed: 01/30/2009
  • Published: 05/11/2011
  • Est. Priority Date: 03/17/2008
  • Status: Active Application
First Claim
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1. a furnace charge that is made of iron ore and additive is made liquid pig iron or liquid steel process of semi-finished, wherein furnace charge stands to reduce as much as possible in the reduction zone, be input to then in melting area or melting unit, the especially melting gasifier, contain CO and contain H under the situation that is forming fixed bed under the situation of adding carbon support and oxygen-containing gas, to melt, wherein to form 2Reducing gas, this reducing gas imports the reduction zone and transforms and derive as furnace top gas at this place, wherein under situation about at least in part solid matter being separated from furnace top gas, heat, the furnace top gas that is loaded with solid matter experiences at least one dry gas cleaning, especially roughing out, and the solid matter of the heat that at least a portion is separated feeds back in melting area or melting unit or the reduction zone, it is characterized in that, under will staying the situation that the solid matter in the furnace top gas separates at least in part, furnace top gas experiences at least one additional fine separation stage after through the dry type roughing out, wherein the solid matter of separating in this separation phase feeds back in melting gasifier and/or the melting area, or gets rid of from this method.

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