Title:
【発明の名称】溶銑の製造方法
Document Type and Number:
Japanese Patent JP2666396
Kind Code:
B2
Abstract:
PURPOSE:To effectively utilize powdery iron source and to obtain molten iron at good thermal efficiency by forming coke and scrap packing layers in a furnace to the prescribed level, respectively, blowing combustion-aid gas from primary tuyeres and blowing gas and the powdery iron source from secondary tuyeres. CONSTITUTION:The coke packing layer 5 is formed from the furnace bottom of a cylindrical furnace 1 to the level containing the primary tuyeres 3, and on this, the scrap packing layer 6 is formed to the furnace shoulder part. The combustion-aid gas 7, if necessary, fuel 8 are blown from the primary tuyere 3 and the coke is partially burnt to hold the coke packing layer 5 to high temp. The combustion-aid gas 9 and the powdery iron source are blown from the secondary tuyere 4 and the scrap and the powdery iron source are melted to produce molten iron. As the powdery ore can be used, the production cost of the molten iron can be reduced.
Inventors:
Hideyuki Yamaoka
Application Number:
JP18726088A
Publication Date:
October 22, 1997
Filing Date:
July 27, 1988
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
International Classes:
C21B11/02; C21B13/02; C21C5/28; (IPC1-7): C21B11/02
Attorney, Agent or Firm:
Terutaka Hogami (1 person outside)