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Title:
SHAPE OF FURNACE OPENING PART IN MIXER CAR
Document Type and Number:
Japanese Patent JP3736208
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To improve the service life of a refractory by embedding an arc-shape rectangular steel plate which is curved in a concave shape in the inside of a furnace opening part into the refractory at the corner part of the rectangular furnace opening part in a mixer car, and forming iron shells at the furnace opening part in the double state.
SOLUTION: The furnace opening part 10 is formed by fitting the side wall iron shells 21, 24 in the furnace opening part at the outside of the iron shell in a furnace body so as to form the rectangular opening part. Then, on the upper surface of a receiving plate 23 arranged at the inside of the side wall iron shell 24 in the furnace opening part, the arc-shape steel plate 22 curved in the concave shape in the inside of the furnace opening part near the corner part of the furnace opening part 10 is elected and embedded into the refractory 30. In this way, the cooling of the refractory 30 is improved by shortening the distance from the working surface of the refractory 30 to the arc-shape steel plate 22, and also, the lengths of an anchor and a core metal can be shortened and the reinforcement of the refractory 30 is facilitated. Since this arc-shape steel plate 2 is not a strength member of the furnace body, the plate having about ≤40 mm thickness is sufficiently used, and in the case of eroding, the plate can easily be exchanged.


Inventors:
今城 元広
高橋 清志
後藤 信孝
Application Number:
JP1999000181537
Publication Date:
January 18, 2006
Filing Date:
June 28, 1999
Export Citation:
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Assignee:
JFEスチール株式会社
International Classes:
C21C1/06; (IPC1-7): C21C1/06
Domestic Patent References:
JP62198256U
JP52021102U
JP57133552U
JP59001461U
JP2028097U
JP10008119A
Attorney, Agent or Firm:
小杉 佳男
山田 正紀