Facility for hot metal manufacturing by directly using small or lump coal and powdered iron ores, method for producing the same, complete steel mill using the facility and manufacturing method

Facility for hot metal manufacturing by directly using small or lump coal and powdered iron ores, method for producing the same, complete steel mill using the facility and manufacturing method

  • CN 102,031,324 A
  • Filed: 12/06/2004
  • Published: 04/27/2011
  • Est. Priority Date: 12/05/2003
  • Status: Active Application
First Claim
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1. method of making molten iron may further comprise the steps:

  • Drying contains fine iron ore;

    When this contains the multistage fluidized bed reactor unit that fine iron ore contacts mutually by fluidized-bed reactor wherein, reduce and be converted into reducing material so that this is contained fine iron ore;

    At high temperature suppress this reducing material to make nodulizing;

    Lump coal and the coal briquette that makes of compacting fine coal are packed in smelting furnace-gasifier to form the thermal source of coal packed bed as the fusing nodulizing;

    In smelting furnace-gasifier that nodulizing is packed into the multistage fluidized bed reactor unit links to each other, and to smelting furnace-gasifier delivering oxygen, to make molten iron;

    AndThe reducing gas of smelting furnace-gasifier discharging is provided to multistage fluidized-bed reactor unit.

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