US 12,337,331 B2
Classification system using fluidized bed
Sung Woo Jeong, Daejeon (KR); and In Yong Jeong, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 18/018,455
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Jun. 17, 2022, PCT No. PCT/KR2022/008604
§ 371(c)(1), (2) Date Jan. 27, 2023,
PCT Pub. No. WO2023/080374, PCT Pub. Date May 11, 2023.
Claims priority of application No. 10-2021-0149249 (KR), filed on Nov. 2, 2021.
Prior Publication US 2024/0382976 A1, Nov. 21, 2024
Int. Cl. B03B 4/06 (2006.01)
CPC B03B 4/06 (2013.01) 8 Claims
OG exemplary drawing
 
1. A classification system using a fluidized bed, the classification system comprising:
a fluidized bed classifier configured to be supplied with a powder containing particles of different sizes, the fluidized bed classifier being configured to entrain the powder into a fluidized gas, and the fluidized bed classifier being configured to discharge a coarse powder of the powder through a coarse powder outlet positioned in a lower portion of the fluidized bed classifier;
a cyclone communicating with an upper portion of the fluidized bed classifier, the cyclone being configured to collect a fine powder of the powder entrained in the fluidized gas transferred from the fluidized bed classifier, and the cyclone being configured to discharge the collected fine powder from a fine powder outlet positioned in a lower portion of the cyclone; and
an internal structure positioned in a fluidized bed region of the fluidized bed classifier, the internal structure being configured to reduce a size of a bubble of the fluidized gas,
wherein the internal structure includes a frame conforming to an inner circumferential surface of the fluidized bed classifier and includes a wire having a lattice structure located in the frame,
wherein a diameter of the wire is 0.1% to 2% of a diameter of the fluidized bed classifier, and
wherein an open area of the internal structure is 80% to 95% of a cross-sectional area of the fluidized bed classifier.