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Title:
BLOWING METHOD INTO CONVERTER AND BLOWING LANCE FOR CONVERTER
Document Type and Number:
Japanese Patent JP2002285224
Kind Code:
A
Abstract:

To provide a technique in which development of dust, splash and spitting can be restrained by effectively enlarging fire point area and making into soft blowing, under condition so as not to bring about a refractory damage.

In a converter lance, a center hole and six positions of peripheral holes having the inclination, are disposed and a distance between the fire point and the refractory is made to ≥0.4 m and while making ≤30% of the overlapping ratio in the fire points, the total area ratio of the fire point is made to ≥75%.


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Inventors:
IMOTO TAKEO
KITAMURA SHINYA
OGAWA YUJI
KUMAKURA MASANORI
Application Number:
JP2001084066A
Publication Date:
October 03, 2002
Filing Date:
March 23, 2001
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
C21C5/30; C21C5/35; C21C5/46; C21C7/072; (IPC1-7): C21C5/30; C21C5/35; C21C5/46; C21C7/072
Attorney, Agent or Firm:
Shunta Naito (1 outside)



 
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