US 12,241,683 B2
Burner for producing inorganic spheroidized particles, apparatus for producing inorganic spheroidized particles, and method for producing inorganic spheroidized particles
Yasuyuki Yamamoto, Tokyo (JP); Yoshiyuki Hagihara, Tokyo (JP); and Masashi Yamaguchi, Tokyo (JP)
Assigned to TAIYO NIPPON SANSO CORPORATION, Tokyo (JP)
Appl. No. 17/763,450
Filed by TAIYO NIPPON SANSO CORPORATION, Tokyo (JP)
PCT Filed Sep. 11, 2020, PCT No. PCT/JP2020/034508
§ 371(c)(1), (2) Date Mar. 24, 2022,
PCT Pub. No. WO2021/060028, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-175861 (JP), filed on Sep. 26, 2019.
Prior Publication US 2022/0341666 A1, Oct. 27, 2022
Int. Cl. F23D 14/00 (2006.01); C01B 33/18 (2006.01); C01F 5/02 (2006.01); C01F 7/021 (2022.01); C01G 49/06 (2006.01); F23D 14/02 (2006.01); F23D 14/70 (2006.01); F27B 1/00 (2006.01); F27B 1/06 (2006.01); F27B 1/08 (2006.01); F27D 17/00 (2006.01)
CPC F27B 1/005 (2013.01) [C01B 33/18 (2013.01); C01F 5/02 (2013.01); C01F 7/021 (2013.01); C01G 49/06 (2013.01); F23D 14/02 (2013.01); F23D 14/70 (2013.01); F27B 1/06 (2013.01); F27B 1/08 (2013.01); C01P 2004/32 (2013.01); F27D 2017/009 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A burner for producing inorganic spheroidized particles using a fuel gas and a combustion-supporting gas containing oxygen, comprising;
a raw material powder supply path configured to supply inorganic powder as raw material powder together with a carrier gas;
a first fuel gas supply path configured to supply a first fuel gas; and
a first combustion-supporting gas supply path configured to supply a first combustion-supporting gas;
wherein the raw material powder supply path comprises:
a first supply path configured to be located in the center of the burner and extend in an axial direction of the burner;
a first collision wall configured to be located at the top of the first supply path, and intersect perpendicularly with the axial direction of the burner;
a plurality of second supply paths configured to be branched from the top of the first supply path, and extend radially from the center of the burner when the burner is cross-sectionally viewed;
a dispersion chamber configured to be located at the top of each respective second supply path of the plurality of second supply paths, to communicate with the respective second supply path, and to have a space in which the cross-sectional area in the direction perpendicular to the direction in which the respective second supply path extends is larger than the cross-sectional area in the respective second supply path;
one or more raw material ejection holes configured to communicate with each said dispersion chamber, and extend in the axial direction; and
a dispersion mechanism configured to be located at a wall surface of the first collision wall, and change a carrying vector of the raw material powder from the axial direction toward the radial direction of the burner at least once, and
wherein the dispersion mechanism is a convex portion having one top portion protruding from the wall surface.