Method for preparing metallic iron by direction reduction in shaft furnace

Method for preparing metallic iron by direction reduction in shaft furnace

  • CN 101,892,340 A
  • Filed: 07/26/2010
  • Published: 11/24/2010
  • Est. Priority Date: 07/26/2010
  • Status: Active Application
First Claim
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1. one kind is utilized shaft furnace directly to reduce the method for producing metallic iron, it is characterized in that described shaft furnace is for increasing the air feed port that can feed oxidizing gas such as air, oxygen-rich air, oxygen in existing shaft furnace, the medullary ray of described air feed port is rich hydrogen reduction gas entry to 1/3~

  • 4/5 of the distance of charge level to the distance of design charge level, air feed port can be provided with 1~

    3 layer in shaft furnace different levels cross section, every layer of air feed port in same horizontal section along the circumference symmetric arrangement.

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