US 12,257,613 B2
Flake-like composition and flake-like composition production method
Hiroshi Fukazawa, Abiko (JP)
Assigned to NIPPON FIBER CORPORATION, Abiko (JP)
Appl. No. 18/020,998
Filed by Nippon Fiber Corporation, Abiko (JP)
PCT Filed Jul. 30, 2021, PCT No. PCT/JP2021/028314
§ 371(c)(1), (2) Date Mar. 6, 2023,
PCT Pub. No. WO2022/034806, PCT Pub. Date Feb. 17, 2022.
Claims priority of application No. 2020-137028 (JP), filed on Aug. 14, 2020.
Prior Publication US 2023/0294147 A1, Sep. 21, 2023
Int. Cl. B09B 3/25 (2022.01); B09B 3/35 (2022.01); B09B 3/40 (2022.01)
CPC B09B 3/25 (2022.01) [B09B 3/35 (2022.01); B09B 3/40 (2022.01)] 6 Claims
OG exemplary drawing
 
1. A process for producing a flake shaped composition material, the process comprising the steps of:
i) heating a raw material containing waste material generated from a coal-fueled thermal power plant to a temperature of 1300° C. or higher in a heating chamber of a furnace, wherein the heating chamber comprises a tubular lumen penetrating through the furnace; and
ii) causing said heated raw material to drip downwardly from the tubular lumen of the heating chamber and solidify into spherical material; and
iii) subsequently, pulverizing said spherical material into flake shaped particles, wherein in said raw material, a total content of SiO2 and Al2O3 in said raw material is between 46% by mass and 62% by mass, a content of SiO2 is 33 to 52% by mass, and a content of Al2O3 is 8 to 13% by mass.