Title:
METHOD FOR DEPHOSPHORIZING MOLTEN IRON IN CONVERTER BY REUSING DEPHOSPHORIZED SLAG
Document Type and Number:
Japanese Patent JP2002003923
Kind Code:
A
Abstract:
To provide a dephosphorizing method of molten iron in a converter with which lime contained in dephosphorized slag can effectively be utilized, a quantity of auxiliary raw material can be reduced and a discharged quantity of slag can be reduced by recycling the slag.
In the converter having a top-bottom blowing facility, refining condition is adjusted by reutilizing the dephosphorized slag in the cold state and/or the hot state, and the dephosphorized slag in which phosphoric acid concentration in the converter slag is ≤20% is reutilized at one or more times.
Inventors:
YOSHIMI MANABU
KANEKO TOSHIYUKI
KUMAKURA MASANORI
HIROKAWA YUICHI
KANEKO TOSHIYUKI
KUMAKURA MASANORI
HIROKAWA YUICHI
Application Number:
JP2000186143A
Publication Date:
January 09, 2002
Filing Date:
June 21, 2000
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C21C5/28; C21C1/02; C21C5/35; C21C5/36; C21C7/00; C21C7/064; (IPC1-7): C21C5/28; C21C1/02; C21C5/35; C21C5/36; C21C7/00; C21C7/064
Attorney, Agent or Firm:
Yasuhiro Hagiwara
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