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Patent Searching and Data


Title:
HOT AIR BLAST FURNACE
Document Type and Number:
Japanese Patent JP3843475
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To attain excellent heat resistance and to eliminate the possibility of a nozzle plate being inclined due to thermal de formation.
SOLUTION: A pair of upright walls made of refractory such as firebricks are provided in parallel, with a prescribed space between them, on a hearth surface 9 and stepped parts 11 are formed on the opposed faces of the upper parts of the upright walls 8 respectively. Flange parts 13 are formed at the opposite end edges of a chamber 12 formed of a heat-resistant alloy and the chamber 12 is supported in a suspended manner between the two upright walls 8 by setting the flange parts 13 on the stepped parts 11, while a nozzle plate 1 wherein a hot air blast nozzle 18 is formed is laid on the upper end faces of the upright walls 8.


Inventors:
Tanaka, Hiroshi
Application Number:
JP1995000329660
Publication Date:
November 08, 2006
Filing Date:
November 24, 1995
Export Citation:
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Assignee:
DAIDO STEEL CO LTD
International Classes:
C21D9/56; F27D1/00; C21D9/63; F27B9/36; F27D5/00; F27D7/00; (IPC1-7): F27D1/00; C21D9/56; C21D9/63; F27B9/36; F27D5/00; F27D7/00
Domestic Patent References:
JP9087753A
JP62218520U
Attorney, Agent or Firm:
伊藤 浩二
橋本 洋一