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Title:
BRICK FOR BLAST FURNACE HEARTHS AND BLAST FURNACE HEARTH USING SAME, AND METHOD FOR PRODUCING BRICK FOR BLAST FURNACE HEARTHS
Document Type and Number:
WIPO Patent Application WO/2018/123726
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a brick for blast furnace hearths, which has excellent hydration resistance and improved hot metal resistance and slag resistance. According to one aspect of the present invention, a brick for blast furnace hearths is provided, which contains 47 to 92% by mass of corundum and 7 to 50% by mass of an aluminum oxynitride, wherein the total amount of these components is 84% by mass or more, the content of a carbonaceous raw material is 10% by mass or less (excluding 0% by mass), the content of aluminum nitride is 3% by mass or less (including 0% by mass), the total amount of AlN-polymorphic SiAlON, β'-SiAlON and silicon nitride is 3% by mass or less (including 0% by mass or less), and the aluminum oxynitride is contained in a matrix part in an amount of 7% by mass or more.

Inventors:
MISHIMA MASAAKI (JP)
Application Number:
PCT/JP2017/045512
Publication Date:
July 05, 2018
Filing Date:
December 19, 2017
Export Citation:
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Assignee:
KROSAKIHARIMA CORP (JP)
International Classes:
C04B35/101; C21B7/06; F27D1/00
Domestic Patent References:
WO2009072652A12009-06-11
WO2009072652A12009-06-11
Foreign References:
JPH01208363A1989-08-22
JPH01208362A1989-08-22
JPS62212259A1987-09-18
JPS61101454A1986-05-20
JPH06502140A1994-03-10
JP3212600B22001-09-25
JP4245122B22009-03-25
Other References:
See also references of EP 3564201A4
Attorney, Agent or Firm:
EIWA PATENT FIRM (JP)
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