US 12,168,234 B2
Method of producing inorganic material and apparatus of producing inorganic material
Yuichi Yaguchi, Tsukuba (JP); Yoshitaka Sakairi, Tsukuba (JP); and Haruo Sunakawa, Tsukuba (JP)
Assigned to FURUKAWA CO., LTD., Tokyo (JP)
Appl. No. 17/617,049
Filed by FURUKAWA CO., LTD., Tokyo (JP)
PCT Filed Jun. 11, 2020, PCT No. PCT/JP2020/022962
§ 371(c)(1), (2) Date Dec. 7, 2021,
PCT Pub. No. WO2020/250960, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 2019-110875 (JP), filed on Jun. 14, 2019.
Prior Publication US 2022/0331813 A1, Oct. 20, 2022
Int. Cl. H01M 10/0562 (2010.01); B02C 17/18 (2006.01); B02C 17/20 (2006.01)
CPC B02C 17/20 (2013.01) [B02C 17/188 (2013.01); H01M 10/0562 (2013.01); H01M 2300/0068 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of producing an inorganic material, the method comprising:
a vitrification step of applying shearing stress and compressive stress to a mixed powder of a plurality of kinds of inorganic compound powders by using a ring ball mill mechanism to vitrify at least a part of the mixed powder; and
a dispersion step of dispersing the vitrified mixed powder after the vitrification step,
wherein a combined step of the vitrification step and the dispersion step is performed a plurality of times to obtain a vitrified inorganic material powder from the mixed powder,
wherein the ring ball mill mechanism has a plurality of pulverization balls, a lower ring that rotates around an axis while maintaining the plurality of pulverization balls, and an upper ring that is arranged on a side opposite to the lower ring across the plurality of pulverization balls and presses the plurality of pulverization balls against the lower ring,
in the vitrification step, the plurality of pulverization balls that revolve in association with the rotation of the lower ring are rotated, so that the shearing stress and the compressive stress are applied to the mixed powder that moves from an axis side to an outer periphery side of the lower ring by a centrifugal force generated by the rotation of the lower ring between the plurality of pulverization balls and the lower ring, and between the plurality of pulverization balls and the upper ring.