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Patent Searching and Data


Title:
METHOD FOR PREVENTING BLOCKAGE OF FLOW PASSAGE IN INDUCTION HEATING DEVICE AND HEATING-TYPE MOLTEN PIG IRON STORING FURNACE
Document Type and Number:
Japanese Patent JP2013231211
Kind Code:
A
Abstract:

To maintain smooth flow of molten pig iron by preventing adhesion of foreign matters, such as an oxide released from a scrap into the molten pig iron, onto a flow passage, when heating the molten pig iron to melt the scrap by using an induction heating device having the groove-type flow passage.

When melting a scrap 15 settled in a molten pig iron storing furnace 11 by conducting induction heating of molten pig iron 14 pooled in the molten pig iron storing furnace 11 using a groove-type induction heating device 21 having a flow passage 22, bubbles are blown into a bottom of the molten pig iron storing furnace 11 located between a settled position of the scrap 15 and the groove-type induction heating device 21 using a lance 41. A porous body 42 having a pore size of ≤20 μm is provided at a tip of the lance 41 to blow bubbles of 0.071 to 0.71 liter per minute per 1 ton molten pig iron.


Inventors:
YAMADA TOSHIO
MIKI YUJI
Application Number:
JP2012000102799
Publication Date:
November 14, 2013
Filing Date:
April 27, 2012
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
C21C1/06; F27D11/06; H05B6/10
Attorney, Agent or Firm:
Tetsuya Mori
Konishi Megumi
Hide Tanaka Tetsu
Hirose Hajime
Miyasaka Tohru