An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same

An apparatus for manufacturing moltens irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same

  • CN 1,754,003 B
  • Filed: 12/23/2003
  • Issued: 05/30/2012
  • Est. Priority Date: 12/23/2002
  • Status: Active Grant
First Claim
Patent Images

1. method that is used to make molten iron comprises step:

  • Come production iron content mixture through drying and compound iron ore and additive;

    Make to contain the one or more fluidized-beds that successively connect of iron mixture through in fluidized-bed reactor, forming, this fluidized-bed comprises breaker plate, and reducing gas reduces mixture and calcine like this to be converted into reducing material thus through said breaker plate;

    Form the coal packed bed, this coal packed bed is a thermal source, and reducing material is fusion therein;

    Reducing material is loaded into the coal packed bed, and provides oxygen to make molten iron to the coal packed bed;

    To offer said fluidized-bed from the reducing gas that the coal packed bed is discharged,Heat said reducing gas through injecting oxygen by the auxiliary oxygen supply equipment;

    AndTo heated reducing gas reheat, wherein oxygen directly is provided to the zone that is arranged in fluidized-bed reactor breaker plate top and in this zonal combustion, thereby prevents that reducing gas that said breaker plate is raise by temperature from destroying or block.

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