Title:
CASTING REFRACTORY MATERIAL FOR PRELIMINARY TREATMENT VESSEL OF MOLTEN IRON
Document Type and Number:
Japanese Patent JP3176832
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a casting refractory material for a preliminary treatment vessel of a molten iron capable of relaxing a thermal stress generated at the heating stage in a low temperature range during the dehydration and drying period and initial temperature elevation period without damaging a corrosion resistance and a spalling resistance of the constructed body, and aiming at the prevention of pushing-out and peeling-off phenomena.
SOLUTION: This casting refractory material is obtained by adding 1-5wt.% out of total coarse pitch having 1-10mm particle diameter and 250°C softening point to 100wt.% refractory composition consisting of refractory aggregates containing silicone carbide and carbon, and a binder. It is preferable for the coarse pitch to have 255-400°C softening point.
Inventors:
Taijiro Matsui
Junji Yamada
Yoshihiko Okada
Yoshimoto Kutoshi
Itsutoshi Iwasaki
Toshihiko Takeshige
Hirohide Okuno
Junji Yamada
Yoshihiko Okada
Yoshimoto Kutoshi
Itsutoshi Iwasaki
Toshihiko Takeshige
Hirohide Okuno
Application Number:
JP29621595A
Publication Date:
June 18, 2001
Filing Date:
October 18, 1995
Export Citation:
Assignee:
Nippon Steel Corporation
Daiko Furnace Material Co., Ltd.
Daiko Furnace Material Co., Ltd.
International Classes:
C04B35/634; C04B35/66; C21C1/06; (IPC1-7): C04B35/66; C21C1/06
Attorney, Agent or Firm:
Yaichi Watanabe