Title:
METHOD FOR OPERATING LOW SILICON IN BLAST FURNACE
Document Type and Number:
Japanese Patent JPH01132704
Kind Code:
A
Abstract:
PURPOSE: To reduce Si in molten iron, to secure strength of coke and to stabilize the operation by adding slag making material of CaO series or MgO series in the coke and making the prescribed value of CaO or MgO in the coke ash.
CONSTITUTION: The slag making material of CaO series or MgO series is added in the coke. Then, CaO/SiO2 in the ash in the coke is made to 0.3W0.8 and MgO/SiO2 to 0.2W0.7. By this method, Si in the molten iron by using the coke is reduced and the strength of the coke is secured and the stable blast furnace is executed.
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Inventors:
HOTTA HIROHISA
KATO TOMONORI
KISHIMOTO SUMIYUKI
TSUKADA KOJI
KATO TOMONORI
KISHIMOTO SUMIYUKI
TSUKADA KOJI
Application Number:
JP28952487A
Publication Date:
May 25, 1989
Filing Date:
November 18, 1987
Export Citation:
Assignee:
NIPPON KOKAN KK
International Classes:
C21B5/00; C21B5/02; (IPC1-7): C21B5/00
Attorney, Agent or Firm:
宮田 信道
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