Title:
REFRACTORY AGGREGATE FOR CASTING SAND
Document Type and Number:
WIPO Patent Application WO/2024/053501
Kind Code:
A1
Abstract:
Provided is a refractory aggregate that is for casting sand and that comprises spherical refractory sintered particles artificially produced by a sintering method, and that can improve the fluidity of the casting sand and can achieve excellent mold strength. This refractory aggregate is for casting sand, comprises spherical refractory sintered particles artificially produced by a sintering method, is configured to have a roundness of at least 0.70 and an average particle size of 0.01-1.00 mm, and is configured such that the total volume of pores having a pore size of 2-10 μm as measured with a mercury intrusion porosimeter is in the range of 0.20-0.50 mL/g, and the amount of fine powder is additionally mixed such that the turbidity as measured by turbidimetry is at most 3000 NTU.
Inventors:
MAKINO HIROSHI (JP)
SATO SHUNICHI (JP)
HORI SHOTA (JP)
MASUDA KEITA (JP)
SATO SHUNICHI (JP)
HORI SHOTA (JP)
MASUDA KEITA (JP)
Application Number:
PCT/JP2023/031396
Publication Date:
March 14, 2024
Filing Date:
August 30, 2023
Export Citation:
Assignee:
ITOCHU CERATECH CORP (JP)
International Classes:
B22C1/00; B33Y70/00; B33Y80/00
Foreign References:
| JP2004202577A | 2004-07-22 | |||
| JP2006247743A | 2006-09-21 | |||
| JP2010000521A | 2010-01-07 | |||
| US4026344A | 1977-05-31 |
Attorney, Agent or Firm:
NAKASHIMA, Michio et al. (JP)
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