Title:
【発明の名称】電気炉による製鋼方法
Document Type and Number:
Japanese Patent JP2912834
Kind Code:
B2
Abstract:
PURPOSE: To improve the steelmaking method for melting scrap by using an electric furnace. CONSTITUTION: In the electric furnace, molten iron in an amount of 30-85% ratio per the whole charged material is charged together with the raw material of the scrap, etc., into a part surrounded by the solid raw material of the scrap, etc., at the center part of the furnace from the furnace top in the stage of 30-40% scrap melting ratio in the charging time of the molten iron. Further, in the case of charging the molten iron in an amount of 72-85% ratio per the whole charging material, the quick reaction is restrained by blowing carbonaceous powder and Al shots. By this method, even if the efficient utilization of the latent heat of the molten metal is executed, the quality of the molten steel is not deteriorated, and the productivity is further improved by utilizing the exothermic decarburized reaction. Further, the lowering of impurities in the steel is attained, and even the low grade scrap, can efficiently be reused.
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Inventors:
SUZUKI SEISHIRO
SUGANO TSUKASA
SUGANO TSUKASA
Application Number:
JP24533294A
Publication Date:
June 28, 1999
Filing Date:
October 11, 1994
Export Citation:
Assignee:
MITSUBISHI SEIKO MURORAN TOKUSHUKO KK
International Classes:
C21C5/52; C22B9/16; F27B3/08; F27D11/08; (IPC1-7): C21C5/52; C22B9/16; F27B3/08; F27D11/08
Domestic Patent References:
| JP5747815A | ||||
| JP641627A |
Attorney, Agent or Firm:
Hidetake Komatsu (3 outside)