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Title:
FILLER SAND
Document Type and Number:
WIPO Patent Application WO/2022/075174
Kind Code:
A1
Abstract:
Provided is filler sand with which it is possible to increase a sintering initiation temperature, and to inhibit the penetration of molten steel. The filler sand contains chromite. The filler sand contains secondary particles 10. The secondary particles 10 contain a plurality of primary particles 12. The particle sizes of the plurality of primary particles 12 are greater than 0 micrometers and at most 50 micrometers. At least some of the plurality of primary particles 12 contained in the secondary particles 10 contain chromite. Preferably, the abovementioned primary particles 12 contain at least 20 wt% and less than 50 wt% Cr2O3, and at least 10 wt% and less than 30 wt% FeO.

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Inventors:
SUEMOTO TOMOKI (JP)
KOYANAGI SEIICHI (JP)
IZUTSU KAZUKI (JP)
Application Number:
PCT/JP2021/036116
Publication Date:
April 14, 2022
Filing Date:
September 30, 2021
Export Citation:
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Assignee:
KINSEI MATEC CO LTD (JP)
International Classes:
B22D41/22; B22D41/46
Foreign References:
JPH01257171A1989-10-13
JPS56108871A1981-08-28
JPS5259026A1977-05-16
JP2006198671A2006-08-03
Attorney, Agent or Firm:
SUZUE Shoji (JP)
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