US 11,833,482 B2
Method for producing particle mixture
Kazushi Takemoto, Himeji (JP); Kenji Nakamura, Himeji (JP); and Hideo Kazama, Himeji (JP)
Assigned to SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo (JP)
Appl. No. 16/496,361
Filed by SUMITOMO SEIKA CHEMICALS CO., LTD., Hyogo (JP)
PCT Filed Jan. 25, 2018, PCT No. PCT/JP2018/002270
§ 371(c)(1), (2) Date Sep. 20, 2019,
PCT Pub. No. WO2018/173471, PCT Pub. Date Sep. 27, 2018.
Claims priority of application No. 2017-057685 (JP), filed on Mar. 23, 2017.
Prior Publication US 2020/0139315 A1, May 7, 2020
Int. Cl. B01F 25/82 (2022.01); B01F 23/60 (2022.01); B01F 27/72 (2022.01); B01F 27/75 (2022.01); B01F 33/82 (2022.01); B01F 25/00 (2022.01); B01F 101/00 (2022.01)
CPC B01F 25/823 (2022.01) [B01F 23/69 (2022.01); B01F 27/72 (2022.01); B01F 27/75 (2022.01); B01F 33/8212 (2022.01); B01F 2025/911 (2022.01); B01F 2101/2204 (2022.01)] 7 Claims
OG exemplary drawing
 
1. A production method for producing a particle mixture in which two or more types of particles are mixed, the production method comprising:
adding a first additive to first particles and mixing the first additive with the first particles using a first mixer;
adding a second additive to the second particles and mixing the second additive with the second particles using a second mixer, and
introducing the two or more types of particles including the first particles mixed with the first additive and the second particles mixed with the second additive into a blender container of a gravity blender, and mixing the two or more types of particles inside the blender container,
wherein the first particles and the second particles are made of the same material and have different average particle diameters,
wherein the gravity blender comprises a conveyance route that is connected to a downstream portion of the blender container and extending to an upper opening of the blender container,
wherein the step of introducing and mixing the two or more types of particles includes making the two or more types of particles circulate in the blender container and the conveyance route N times, and
wherein the number N of circulation times of the two or more types of particles satisfies 1.5≤N<2.5, wherein N is calculated by dividing a value obtained by multiplying a flow rate of the two or more types of particles that pass through the conveyance route by a circulation period by a total amount of the two or more types of particles.