Title:
REFRACTORY PRODUCT FOR USE IN CONTINUOUS CASTING, AND REFRACTORY PRODUCT MEMBER
Document Type and Number:
WIPO Patent Application WO/2023/167008
Kind Code:
A1
Abstract:
The present invention improves the corrosion resistance and thermal shock resistance of a refractory product for use in continuous casting of a zirconia-carbonaceous material and a refractory product member. The refractory product according to the present invention contains a free carbon component in an amount of 8% by mass to 16% by mass inclusive, in which the remaining main component comprises a zirconia component and the total content of another components other than the free carbon component and the zirconia component is less than 5% by mass. When the proportion of a part excluding a structure composed of the free carbon component from a structure of the refractory product is defined as 100% by volume, refractory product particles each having a particle diameter of more than 0.3 mm account for 5% by volume or more and refractory product particles each having a particle diameter of 0.045 mm or less account for 5% by volume to 40% by volume inclusive. With respect to a coarse particle having at least a largest particle size among the refractory product particles in the refractory product, an approximately continuous void layer having a shape similar to the shape of the coarse particle is present around the coarse particle. The refractory product has an apparent porosity of 16% or less and a maximum thermal expansion ratio at a temperature up to 1500°C is 0.6% or less.
Inventors:
MATSUMOTO SHIGEFUMI (JP)
LI LING (JP)
TAKAMI KOUHEI (JP)
MORIKAWA KATSUMI (JP)
IGATA TETSUO (JP)
LI LING (JP)
TAKAMI KOUHEI (JP)
MORIKAWA KATSUMI (JP)
IGATA TETSUO (JP)
Application Number:
PCT/JP2023/005645
Publication Date:
September 07, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
KROSAKIHARIMA CORP (JP)
International Classes:
C04B35/482; B22D41/54
Domestic Patent References:
| WO2009072216A1 | 2009-06-11 |
Foreign References:
| JPH01176266A | 1989-07-12 | |||
| JP2007326110A | 2007-12-20 | |||
| JP2005144462A | 2005-06-09 | |||
| JP2005152928A | 2005-06-16 | |||
| JP2014141381A | 2014-08-07 | |||
| JP2011200911A | 2011-10-13 | |||
| JP6027676B2 | 2016-11-16 |
Attorney, Agent or Firm:
EIWA PATENT FIRM (JP)
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