Grading discharge module, and continuous wet ball-milling separation device and separation method

Patent metadata

Field	Value
Publication number	US-12569857-B2
Application number	US-202118262561-A
Country	US
Kind code	B2
Filing date	Dec 30, 2021
Priority date	Jan 22, 2021
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

A continuous wet ball-milling separation device has a cylinder, which has a feeding section, a shearing section, and a crushing section in sequence from top to bottom. The feeding section is located at the upper portion of the device, and is provided with a liquid inlet, a material inlet, and a material distributor. The shearing section is located in the middle of the device, and is internally provided with shearing blades. The crushing section is located at the lower portion of the device, and is internally provided with stirring rods and crushing balls, and a grading discharge module is provided at the bottom of the crushing section. A grading discharge module is used in the device and a continuous wet ball-milling separation method applying the device. The device implements continuous operations of material crushing and grading by means of the material distributor, wet shearing, wet crushing, and wet grading.

First claim

The invention claimed is:

1 . A grading discharge module, comprising a grading mesh plate and a grading wheel, wherein:
the grading mesh plate is sleeved outside the grading wheel, the grading mesh plate is cylindrical in shape and has a top cover arranged at a top end of the grading mesh plate and fixedly connected to a first rotating shaft, the grading mesh plate comprises a feeding section, a grading section, and a discharging section, which are arranged from top to bottom sequentially, a wall of the feeding section and a wall of the discharging section are provided with a plurality of first openings, and a wall of the grading section is free of an opening, the grading wheel is cylindrical in shape and a wall of the grading wheel is provided with a plurality of second openings, and each of the plurality of first openings and the plurality of second openings is in shape of a slit or a hole.

2 . The grading discharge module of claim 1 , wherein an outer width or diameter of each second opening at an outer surface of the wall of the grading wheel is larger than an inner width or diameter thereof at an inner surface of the wall.

3 . The grading discharge module of claim 2 , wherein a ratio of the inner width or diameter to the outer width or diameter is 0.2-0.9.

4 . The grading discharge module of claim 1 , wherein a discharging outlet is arranged at a bottom of the grading wheel.

5 . The grading discharge module of claim 1 , wherein an area of the grading mesh plate where the plurality of first openings are arranged is staggered from an area of the grading wheel where the plurality of second openings are arranged in an axial direction.

6 . The grading discharge module of claim 1 , wherein the grading wheel comprises, from top to bottom, an upper section, a grading section, and a lower section,
a wall of the upper section of the grading wheel and a wall of the lower section of the grading wheel are free of openings, and a wall of the grading section is provided with the plurality of second openings.

7 . The grading discharge module of claim 1 , wherein the feeding section, the grading section, and the discharging section, of the grading mesh plate correspond to the upper section, the grading section, and the lower section of the grading wheel, respectively.

8 . A continuous wet ball-milling separation device, comprising a feeding section of the ball-milling separation device, a shearing section and a crushing section arranged from top to bottom sequentially, wherein:
the crushing section comprises the grading discharge module of claim 1 disposed in a bottom of the crushing section, the feeding section of the ball-milling separation device is located at the upper part of the ball-milling separation device, and is provided with a liquid inlet, a material inlet, and a material distributor, the shearing section is located at the middle part of the ball-milling separation device and is provided with shearing blades therein, and the crushing section is located at the lower part of the ball-milling separation device and is provided with a plurality of stirring rods and a plurality of crushing balls therein.

9 . The continuous wet ball-milling separation device of claim 8 , wherein the ball-milling separation device has a cylindrical structure.

10 . The continuous wet ball-milling separation device of claim 9 , wherein the liquid inlet and the material inlet are located in a top or an upper part of the ball-milling separation device, the material distributor is located inside the cylindrical structure, and the material inlet is in communication with an inlet of the material distributor through a pipeline.

11 . The continuous wet ball-milling separation device of claim 9 , wherein a motor is arranged outside a top of the cylindrical structure, and the first rotating shaft is arranged along a central axis of the cylindrical structure and extends through the feeding section of the ball-milling separation device, the shearing section, and the crushing section.

12 . The continuous wet ball-milling separation device of claim 11 , wherein the plurality of shearing blades and the plurality of stirring rods are evenly distributed on the first rotating shaft and fixedly connected to the first rotating shaft, the plurality of crushing balls are loaded in the crushing section, and the grading discharge module is located along the central axis of the crushing section.

13 . The continuous wet ball-milling separation device of claim 12 , wherein the discharging outlet serves as a second rotating shaft.

14 . The continuous wet ball-milling separation device of claim 13 , wherein the grading mesh plate and the grading wheel are driven by the first rotating shaft and the second rotating shaft to rotate, respectively.

15 . The continuous wet ball-milling separation device of claim 11 , wherein both the grading mesh plate and the grading wheel are coaxial with the first rotating shaft.

16 . The continuous wet ball-milling separation device of claim 15 , wherein a width or diameter of the plurality of first openings is smaller than a diameter of the plurality of crushing balls,
and/or, wherein the grading mesh plate forms the rotating shaft of the crushing section, and the plurality of stirring rods are evenly distributed on the outer wall of the grading mesh plate.

17 . The continuous wet ball-milling separation device of claim 8 , wherein a gap between a lower edge of the discharging section of the grading mesh plate and a bottom plate of the device is smaller than a diameter of the plurality of crushing balls.

18 . The continuous wet ball-milling separation device of claim 17 , wherein the width or diameter of the plurality of the first openings in the grading mesh plate is 0.5-0.8 times the diameter of the plurality of crushing balls.

19 . A continuous wet ball-milling separation method utilizing the continuous wet ball-milling separation device of claim 8 , comprising the following steps:
S1: feeding a liquid continuously into the ball-milling separation device through the liquid inlet, controlling the liquid level in the ball-milling separation device, while discharging the liquid continuously from the ball-milling separation device through a discharging outlet; S2: after the liquid level in the ball-milling separation device is controlled into a stable state, introducing a material into the material distributor through the material inlet and then into the ball-milling separation device, cooling or mixing the bulk material dispersed in the liquid, and shearing the cooled or mixed bulk material in the shearing section of the ball-milling separation device; S3: milling the cooled or mixed bulk material in the crushing section of the ball-milling separation device, which comprises screening a material powder in size smaller than a width or diameter of the first slits or holes of the grading mesh plate into the grading mesh plate through the mesh plate, controlling the material powder and liquid in a particle size smaller than a target particle size to enter the grading wheel through the second slits or holes, and discharging a material obtained from the ball-milling separation device through the discharging outlet when the grading wheel rotates; and S4: introducing the material powder in a particle size greater than the target particle size out of the grading wheel when the grading wheel rotates, wherein the material powder discharged from the grading wheel collides with an inner wall of the grading section of the g

Assignees

• China Petroleum & Chem Corp
• Sinopec Dalian Res Inst Petroleum & Petrochemicals Co Ltd

Inventors

• Liao Changjian
• Meng Fanfei
• Piao Yong
• Wang Jing
• Jin Ping
• Liu Zhiyu
• Wang Haibo

Classifications

• B02C23/36

  the crushing or disintegrating zone being submerged in liquid · CPC title

• B02C18/10

  with drive arranged above container {(B02C18/083 takes precedence)} · CPC title

• B02C17/161

  Arrangements for separating milling media and ground material · CPC title

• B02C17/1835

  Discharging devices combined with sorting or separating of material (B02C17/186 takes precedence) · CPC title

• B02C23/18

  Adding fluid, other than for crushing or disintegrating by fluid energy ({for tumbling mills B02C17/186;} feeding devices B02C23/02) · CPC title