Fluorite fine powder ball milling device

Abstract

A fluorite fine powder ball milling device relates to a ball mill, a rotary drum (4) can rotate along the axis of the rotary drum (4) on the top of the base (20), a plurality of crushing balls are arranged in the drum cavity (44), a plurality of mounting holes (34) are arranged at equal intervals between the spherical cavity (30) and the outer wall of the ball (26), a crushing mechanism is arranged in each mounting hole (34), and the plurality of circular convex plates (21) of the crushing ball have the same curvature and are located in the same spherical surface; the plurality of hollow crushing balls are loaded in the drum cavity arranged in the rotary drum, the plurality of crushing mechanisms are arranged at intervals on each crushing ball, fluorite particles loaded in the crushing mechanism are gradually refined by extrusion of the crushing mechanism, the refined fluorite powder enters the spherical cavity arranged in the crushing ball and is stored, the fluorite powder is poured out from the spherical cavity after grinding is completed and is collected, and the purpose of rapid grinding can be achieved.

Description

Technical Field

[0001] This invention relates to a ball mill, and more particularly to a ball milling apparatus for fine fluorite powder. Background Technology

[0002] Fluorite, also known as fluorspar, is a relatively common mineral in nature. It can occur in association with many other minerals and is found in many parts of the world, with five effective varieties. It crystallizes in octahedral and cubic forms. The crystals have a vitreous luster, are brightly colored and varied in color, are brittle, have a Mohs hardness of 4, a melting point of 1360℃, and exhibit perfect cleavage. Some samples can fluorite under friction, heating, or ultraviolet radiation. Fluorite powder is formed by processing natural fluorite ore into fine powder through crushing, grinding, and flotation.

[0003] Ball mills are key equipment for further pulverizing materials after they have been crushed. They are widely used in the production of cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal ore beneficiation, and glass and ceramics, for dry or wet grinding of various ores and other grindable materials. Ball mills are suitable for grinding various ores and other materials and are widely used in mineral processing, building materials, and chemical industries. They can be divided into dry and wet grinding methods. Based on the discharge method, they are divided into grate type and overflow type.

[0004] Because fluorite powder is brittle, it is relatively easy to crush. Traditional ball mills use large grinding balls with large gaps between them. Since the grinding balls are solid, they are heavy and require a high-power drive motor to rotate the drum. Furthermore, sufficient grinding time is needed to grind the fluorite into a finer powder, which is time-consuming, labor-intensive, and has limited energy efficiency. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention discloses a ball milling device for fine fluorite powder. By loading multiple hollow grinding balls into the cavity of a rotating drum, and by arranging multiple grinding mechanisms at intervals on each grinding ball, the fluorite particles loaded in the grinding mechanism are gradually refined by the squeezing of the grinding mechanism. The refined fluorite powder enters the spherical cavity of the grinding ball for storage. After grinding is completed, the fluorite powder is poured out from the spherical cavity and collected, thereby achieving the purpose of rapid grinding.

[0006] To achieve the aforementioned objective, the present invention employs the following technical solution: A ball milling device for fine fluorite powder includes a base, a horizontally mounted rotating drum on top of the base, a cavity inside the drum, and the drum being rotatable along its axis from the top of the base. Multiple grinding balls are located inside the drum, each ball comprising a sphere with a spherical cavity at its center. Multiple mounting holes are equidistantly spaced between the spherical cavity and the outer wall of the sphere. A grinding mechanism is installed in each mounting hole, comprising a storage tube, an insert tube, and a circular protrusion. The storage tube is fixedly connected to the mounting hole. A conical plate is located at the end of the storage tube within the spherical cavity, with its end near the center of the cavity. Discharge holes are densely distributed on the conical plate. A cavity is located inside the insert tube, and a baffle is located at one end of the insert tube. The central part has a square perforation, and the inner arc surface of the circular convex plate forms an arc groove. At the center of the bottom of the arc groove, there is a square sliding rod extending out of the arc groove. The end of the square sliding rod extends into the cavity along the other end of the insertion tube and exits through the square perforation. A striking rod is provided at the end of the square sliding rod after exiting the perforation. The end of the striking rod has a cone tip. A spring is sleeved on the outside of the square sliding rod between the baffle and the bottom of the arc groove. The insertion tube is clamped to the opening of the storage tube. The striking rod is slidably connected in the storage tube, and the cone tip of the striking rod can slide to contact the conical plate. The space between the cone tip and the conical plate forms a storage cavity. The crushing ball has multiple circular convex plates with the same curvature and located in the same spherical surface. There is also a material picking hole on the ball.

[0007] The fluorite fine powder ball milling device has collars fitted around both ends of the rotating drum. Each collar is supported by bearings on opposite sides at the bottom of the collar. A gear ring A is fitted around the middle of the outer wall of the rotating drum. A motor is installed on the top of the base. A gear ring B is fitted around the rotating shaft of the motor. Gear ring B and gear ring A mesh.

[0008] The fluorite fine powder ball milling device has an annular groove in the middle of the outer wall of the collar, and the outer walls of the bearings located on opposite sides of the bottom of the collar are both stuck in the annular groove.

[0009] The fluorite fine powder ball milling device has two support seats spaced at each of the four corners of the top of the base, and a support shaft is provided between each of the two support seats at each of the four corners of the top of the base. Four bearings are all sleeved on the four support shafts.

[0010] The aforementioned fluorite fine powder ball milling device has a support between the top of the motor and the base.

[0011] The fluorite fine powder ball milling device has a discharge port that is a frustum-shaped structure with a narrower diameter at one end of the storage chamber and a wider diameter at the other end of the spherical cavity.

[0012] The fluorite fine powder ball milling device has a U-shaped clamping block at the outer end of the storage tube and a clamping plate on the outer wall of the other end of the insertion tube, which is clamped in the U-shaped clamping block.

[0013] The fluorite fine powder ball milling device has multiple protruding strips spaced around the inner wall of the cylinder along the length of the rotating cylinder. An opening is provided on the arc-shaped wall of the rotating cylinder, and a door body is covered on the opening. A hinge is provided between one side of the opening and one side of the door body. A sleeve A is provided on the opposite two edges of the outer wall near the other side of the opening. A sleeve B is provided on the door body at the corresponding position of the two sleeves A. An insert rod is slidably connected in the sleeve A and sleeve B on the outer wall of each opening edge and the outer wall of the door body. A handle is provided on the insert rod. A pull handle is provided on the outer wall of the middle part of the other side of the door body.

[0014] The fluorite fine powder ball milling device described above has multiple disassembly and assembly holes spaced apart around a square slide bar on a circular convex plate.

[0015] The fluorite fine powder ball milling device has a connecting pipe at the outer end of the feeding hole, an external thread on the outer wall of the connecting pipe, and an internal thread on the cover. The cover is screwed to the external thread of the connecting pipe through the internal thread.

[0016] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: The fluorite fine powder ball milling device of the present invention uses multiple hollow grinding balls installed in the cylinder cavity of a rotating drum, with multiple grinding mechanisms spaced apart on each grinding ball. The fluorite particles inside the grinding mechanism are gradually refined by the extrusion of the grinding mechanism. The refined fluorite powder enters the spherical cavity of the grinding ball for storage. After grinding is completed, the fluorite powder is poured out from the spherical cavity and collected, thus achieving the purpose of rapid grinding. The present invention has a compact structure, advanced design, saves a lot of grinding time, has a high yield, and has strong promotional value. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the crushing ball of the present invention; Figure 3 This is a schematic diagram of the internal structure of the crushing ball of the present invention; Figure 4 This is a schematic diagram of the structure of the sphere of the present invention; Figure 5 This is a schematic diagram of the structure of the storage tube of the present invention; Figure 6 This is a schematic diagram of the cannula structure of the present invention; Figure 7 This is a schematic diagram of the structure of the circular convex plate and the striking rod of the present invention. Figure 8 This is a schematic diagram of the internal structure of the rotating cylinder of the present invention; Figure 9 This is a schematic diagram of the structure of the F-shaped disassembly and assembly tool and the crushing ball of the present invention when they are used together.

[0018] In the diagram: 1. Collar; 2. Ring groove; 3. Hinge; 4. Rotary cylinder; 5. Door body; 6. Opening; 7. Gear ring A; 8. Bearing; 9. Support base; 10. Support shaft; 11. Sleeve A; 12. Sleeve B; 13. Handle; 14. Insert rod; 15. Pull handle; 16. Bracket; 17. Motor; 18. Rotary shaft; 19. Gear ring B; 20. Base; 21. Circular convex plate; 22. Spring; 23. U-shaped locking block; 24. Locking plate; 2 5. Square slide bar; 26. Sphere; 27. Cover; 28. Insert tube; 29. ​​Arc groove; 30. Spherical cavity; 31. Material feeding hole; 32. Connecting pipe; 33. Tube cavity; 34. Mounting hole; 35. Storage pipe; 36. Discharge hole; 37. Square perforation; 38. Striking rod; 39. Conical plate; 40. Storage cavity; 41. Conical tip; 42. Baffle; 43. Disassembly hole; 44. Cylindrical cavity; 45. Protruding strip; 46. F-shaped disassembly tool. Detailed Implementation

[0019] The present invention can be explained in more detail through the following embodiments. The present invention is not limited to the following embodiments. The purpose of disclosing the present invention is to protect all changes and modifications within the scope of the present invention. Combined with appendix Figures 1-8The fluorite fine powder ball milling device includes a base 20, a horizontally arranged rotating cylinder 4 on the top of the base 20, the rotating cylinder 4 having a hollow structure, and multiple protruding strips 45 spaced along the length of the rotating cylinder 4 on the inner wall of the cylinder cavity 44. An opening 6 is provided on the arc-shaped wall of the rotating cylinder 4, and a door body 5 is covered over the opening 6. A hinge 3 is provided between one side of the opening 6 and one side of the door body 5. Sleeves A11 are respectively provided on opposite sides of the outer wall near the other side of the opening 6. Sleeves B12 are respectively provided on the door body 5 at positions corresponding to the two sleeves A11. Insert rods 14 are slidably connected inside the sleeves A11 and B12 on the outer wall of each opening 6 and the outer wall of the door body 5. A handle 13 is provided on the insert rod 14. A handle 13 is provided on the outer wall of the middle part of the other side of the door body 5. The handle 15 allows the rotating drum 4 to rotate along its axis at the top of the base 20. A collar 1 is fitted around both ends of the rotating drum 4. Two support seats 9 are spaced apart at each of the four corners of the top of the base 20. A support shaft 10 is positioned between each pair of support seats 9 at the four corners of the top of the base 20. Four bearings 8 are fitted onto the four support shafts 10. Each collar 1 is supported on opposite sides at its bottom. A gear ring A7 is fitted around the middle of the outer wall of the rotating drum 4. A motor 17 is located at the top of the base 20. A bracket 16 is positioned between the motor 17 and the top of the base 20. A gear ring B19 is fitted onto the rotating shaft 18 of the motor 17. The gear ring B19 meshes with the gear ring A7. A groove 2 is located in the middle of the outer wall of the collar 1. The outer walls of the bearings 8 on opposite sides of the bottom are both locked in the annular groove 2. Multiple crushing balls are provided inside the rotating drum 4. Each crushing ball includes a sphere 26, with a spherical cavity 30 at its center. Multiple mounting holes 34 are equidistantly spaced between the spherical cavity 30 and the outer wall of the sphere 26. A crushing mechanism is provided in each mounting hole 34. The crushing mechanism includes a storage tube 35, an insert tube 28, and a circular protrusion 21. The storage tube 35 is fixed inside the mounting hole 34. A tapered plate 39 is provided at the end of the storage tube 35 located within the spherical cavity 30. The end of the tapered plate 39 is close to the center of the spherical cavity 30. Discharge holes 36 are densely distributed on the tapered plate 39. The discharge holes 36 are frustum-shaped structures with a reduced diameter at one end of the storage cavity 40 and an expanded diameter at the other end of the spherical cavity 30. The insert tube 28... The tube 8 has a cavity 33. A baffle 42 is provided at one end of the insertion tube 28. A square through hole 37 is provided at the center of the baffle 42. The inner arc surface of the circular convex plate 21 forms an arc groove 29. A square sliding rod 25 extending out of the arc groove 29 is provided at the center of the bottom of the arc groove 29. Multiple disassembly holes 43 are provided around the square sliding rod 25 on the circular convex plate 21 at intervals. The end of the square sliding rod 25 extends into the cavity 33 along the other end of the insertion tube 28 and exits through the square through hole 37. A striking rod 38 is provided at the end of the square sliding rod 25 after exiting through the through hole 37. A cone tip 41 is provided at the end of the striking rod 38. A spring 22 is sleeved on the outside of the square sliding rod 25 between the baffle 42 and the bottom of the arc groove 29. A U-shaped locking block 23 is provided at the outer end of the storage tube 35.A retaining plate 24 is provided on the outer wall of the other end of the insertion tube 28. The retaining plate 24 is engaged with the U-shaped retaining block 23. The insertion tube 28 is engaged with the opening of the storage tube 35. The striking rod 38 is slidably connected to the storage tube 35, and the cone tip 41 of the striking rod 38 can slide to contact the conical plate 39. The space between the cone tip 41 and the conical plate 39 forms the storage cavity 40. The crushing ball has multiple circular protrusions 21 with the same curvature and located in the same spherical surface. The ball 26 is also provided with a material taking hole 31. A connecting tube 32 is provided at the outer end of the material taking hole 31. The outer wall of the connecting tube 32 is provided with external threads, and the cover 27 is provided with internal threads. The cover 27 is screwed to the external threads of the connecting tube 32 through the internal threads.

[0020] To implement the fluorite fine powder ball mill apparatus described in this invention, the motor 17 is connected to a switch and a power supply respectively, in conjunction with the attached... Figure 9 Place the cover 27 over the opening of the feeding hole 31, insert the F-shaped disassembly tool 46 into the disassembly hole 43 and rotate it. The rotation of the circular convex plate 21 drives the square slide rod 25 to rotate, which in turn drives the insertion tube 28, which is sleeved on the outside of the square slide rod 25, to rotate. The rotation of the insertion tube 28 drives the clamping plate 24 to rotate, causing the clamping plate 24 to disengage from the U-shaped clamping block 23. Lift the circular convex plate 21, causing the striking rod 38, insertion tube 28 and storage tube 35 to separate. Load an appropriate amount of fluorite particles into the storage tube 35. Repeat the above steps in reverse to place the striking rod 38 and insertion tube 28 into the storage tube 35. Clamp the clamping plate 24 into the U-shaped clamping block 23. Load an appropriate amount of fluorite particles into multiple crushing mechanisms according to the above steps. Multiple crushing balls are set, and each crushing ball is loaded with an appropriate amount of fluorite particles according to the above steps. Rotate the drum 4 to the point where it can... To smoothly open the door 5 to the appropriate position, pinch the handle 13 and move the insert rod 14 to separate the insert rod 14 from the sleeve A11. Pull the handle 15 to open the door 5. Place multiple crushing balls containing a suitable amount of fluorite particles into the cylinder cavity 44 of the rotating drum 4. Reverse the above steps to close the door 5. Turn on the motor 17. The motor 17 drives the rotating shaft 18 to rotate, which in turn drives the gear ring B19 to rotate. The rotation of the gear ring B19 drives the gear ring A7 that meshes with it to rotate. The rotation of the gear ring A7 drives the rotating drum 4 to rotate. The collars 1 sleeved at both ends of the rotating drum 4 rotate smoothly under the support of the bearing 8, driving the multiple crushing balls located in the cylinder cavity 44 to rotate. Multiple protruding strips 45 spaced along the length of the rotating drum 4 on the inner wall of the cylinder cavity 44 can effectively lift and drop multiple crushing balls when the rotating drum 4 rotates, so that each crushing ball rotates evenly. The crushing steps for fluorite particles contained in a crushing ball are as follows: 1. When a crushing ball is placed into the cylinder cavity 44 of the rotating drum 4, the circular convex plate 21 at the bottom of the crushing ball contacts the bottom of the cylinder cavity 44. The circular convex plate 21 at the bottom of the crushing ball will be under heavy pressure from the large weight of the crushing ball. At this time, the cone tip 41 at the end of the circular convex plate 21 will move towards the cone plate 39 of the crushing mechanism. The spring 22 of the crushing mechanism will be compressed. The storage cavity 40 between the circular convex plate 21 and the cone plate 39 will become smaller and the fluorite particles in the storage cavity 40 will be squeezed and broken to some extent. Second, as the rotating drum 4 rotates, it causes the crushing ball to roll. The circular convex plate 21 will disengage from the inner bottom of the rotating drum 4. The spring 22 installed in this crushing mechanism will extend under its own elasticity. The conical tip 41 at the end of the circular convex plate 21 will move away from the conical plate 39 installed in this crushing mechanism under the elastic force of the spring 22, making the storage cavity 40 larger. The fluorite particles in this storage cavity 40 will become loose. Third, as the rotating drum 4 rotates, it drives the crushing ball to continue rolling. The circular convex plate 21 will move towards the top of the crushing ball. At this time, the conical plate 39 provided in the crushing mechanism will be located at the lower part of the crushing mechanism. The fluorite particles smaller than the discharge hole 36 after being crushed in the storage cavity 40 will flow out of the storage cavity 40 along the discharge hole 36 under the action of gravity, and then flow into the spherical cavity 30 provided in the crushing ball. Fourth, as the rotating drum 4 rotates, it causes the crushing ball to continue rolling. The circular convex plate 21 will move to the bottom of the crushing ball again. The circular convex plate 21 located at the bottom of the crushing ball will be under heavy pressure from the large weight of the crushing ball again. The fluorite particles in the storage chamber 40 will be squeezed and broken a little more. 5. As the rotating drum 4 continues to rotate, the above steps will be repeated until all the fluorite particles in the storage chamber 40 are completely crushed, making them smaller than the discharge hole 36 and flowing into the spherical cavity 30 provided by the crushing ball. VI. Since the multiple circular protrusions 21 of this crushing ball have the same curvature and are located in the same spherical surface, while this crushing mechanism is rotating, the circular protrusion 21 of another crushing mechanism adjacent to this circular protrusion 21 will roll to the bottom of the crushing ball. The circular protrusion 21 of the other crushing mechanism will also follow the movement trajectory of this circular protrusion 21 until all the fluorite particles in the storage cavity 40 of the other crushing mechanism are crushed to be smaller than the discharge hole 36 and all flow into the spherical cavity 30 of this crushing ball. 7. Since there are multiple crushing balls inside the rotating drum 4 that are in contact with and stacked on each other, and multiple protruding strips 45 cause multiple crushing balls to be lifted up and fall down when the rotating drum 4 rotates, the rolling trajectory of each crushing ball is not strictly a perfect circle with the ends connected. Therefore, the rolling trajectory of each crushing ball is a random spiral. Thus, the fluorite particles in the multiple crushing mechanisms set on each crushing ball have the opportunity to be broken into small particles under their own weight and the compression between the crushing balls. Since the end of the storage tube 35 in each crushing ball points to and is close to the center of the spherical cavity 30 of the crushing ball, the fluorite powder entering the spherical cavity 30 from the storage cavity 40 will always be at the bottom of the spherical cavity 30 under the action of gravity. When the crushing ball rolls, the height of the storage tube 35 at the bottom of the crushing ball is greater than the height of the fluorite powder. Due to the obstruction of the side wall of the bottom storage tube 35, the fluorite powder will not return to the storage cavity 40. After the rotating drum 4 has rotated for the required time, the fluorite particles in the crushing mechanism will be crushed and flow into the spherical cavity 30 of the crushing ball through the discharge hole 36. The discharge hole 36 is a frustum-shaped structure with a narrow diameter at one end of the storage cavity 40 and an expanded diameter at the other end of the spherical cavity 30, which facilitates the discharge of fine fluorite powder from the storage cavity 40 and prevents it from being blocked in the discharge hole 36. Turn off motor 17 to stop rotating drum 4, open door 5, take out multiple crushing balls, open cover 27, pour out the fluorite powder contained in the spherical cavity 30 of each crushing ball and collect it. Then, refill with fluorite particles and repeat the above actions.

[0021] The parts of this invention not described in detail are prior art.

Claims

1. A ball milling device for fluorite powder, comprising a base (20), characterized in that: in The top of the base (20) is provided with a horizontally arranged rotating cylinder (4), and a cylinder cavity (44) is provided inside the rotating cylinder (4). The rotating cylinder (4) can rotate around the axis of the rotating cylinder (4) at the top of the base (20). Multiple crushing balls are provided inside the cylinder cavity (44). Each crushing ball includes a sphere (26). A spherical cavity (30) is provided in the center of the sphere (26). Multiple mounting holes (34) are provided at equal intervals between the spherical cavity (30) and the outer wall of the sphere (26). A crushing mechanism is provided in each mounting hole (34) for crushing. The mechanism includes a storage tube (35), an insertion tube (28), and a circular convex plate (21). The storage tube (35) is fixed in the mounting hole (34). A conical plate (39) is provided at the end of the storage tube (35) located in the spherical cavity (30). The end of the conical plate (39) is close to the center of the spherical cavity (30). Discharge holes (36) are densely distributed on the conical plate (39). A cavity (33) is provided in the insertion tube (28). A baffle (42) is provided at one end of the insertion tube (28). A square perforation is provided in the center of the baffle (42). 37), the inner arc surface of the circular convex plate (21) forms an arc groove (29). At the center of the bottom of the arc groove (29), there is a square slide rod (25) extending out of the arc groove (29). The end of the square slide rod (25) extends into the cavity (33) along the other end of the insertion tube (28) and passes through the square perforation (37). At the end of the square slide rod (25) after passing through the perforation (37), there is a striking rod (38). At the end of the striking rod (38), there is a cone tip (41). At the baffle (42) and the arc groove (29) A spring (22) is sleeved on the outside of the square sliding rod (25) between the bottom of the trough. The insertion tube (28) is snapped into the opening of the storage tube (35). The striking rod (38) is slidably connected inside the storage tube (35), and the cone tip (41) of the striking rod (38) can slide to contact the conical plate (39). The space between the cone tip (41) and the conical plate (39) forms the storage cavity (40). The multiple circular convex plates (21) of the crushing ball have the same curvature and are located in the same spherical surface. The ball (26) is also provided with a material taking hole (31).

2. The ball milling apparatus for fluorite concentrate according to claim 1, characterized in that: in Both ends of the rotating drum (4) are fitted with collars (1). Each collar (1) is supported by bearings (8) on the opposite sides of the bottom of each collar (1). A gear ring A (7) is fitted in the middle of the outer wall of the rotating drum (4). A motor (17) is provided on the top of the base (20). A gear ring B (19) is fitted on the rotating shaft (18) of the motor (17). The gear ring B (19) and the gear ring A (7) mesh.

3. The fluorite powder ball milling apparatus according to claim 2, characterized in that: A ring groove (2) is provided in the middle of the outer wall of the collar (1), and the outer walls of the bearings (8) located on opposite sides of the bottom of the collar (1) are all stuck in the ring groove (2).

4. The ball milling apparatus for fluorite concentrate according to claim 3, characterized in that: in Two support seats (9) are provided at intervals at the four corners of the top of the base (20). A support shaft (10) is provided between each two support seats (9) at the four corners of the top of the base (20). Four bearings (8) are sleeved on the four support shafts (10).

5. The fluorite concentrate ball milling apparatus according to claim 2, characterized in that: A bracket (16) is provided between the top of the motor (17) and the base (20).

6. The ball milling apparatus for fluorite concentrate according to claim 1, characterized in that: The discharge hole (36) is a frustum-shaped structure with a reduced diameter at one end of the storage cavity (40) and an expanded diameter at the other end of the spherical cavity (30).

7. The ball milling apparatus for fluorite concentrate according to claim 1, characterized in that: A U-shaped locking block (23) is provided at the outer end of the storage tube (35), and a locking plate (24) is provided on the outer wall of the other end of the insertion tube (28). The locking plate (24) is locked inside the U-shaped locking block (23).

8. The ball milling apparatus for fluorite concentrate according to claim 1, characterized in that: Multiple protruding strips (45) are provided at intervals around the inner wall of the cylinder cavity (44) along the length of the rotating cylinder (4). An opening (6) is provided on the arc-shaped wall of the rotating cylinder (4). A door body (5) is covered on the opening (6). A hinge (3) is provided between one side of the opening (6) and one side of the door body (5). A sleeve A (11) is provided on the opposite two edges of the outer wall near the other side of the opening (6). A sleeve B (12) is provided on the door body (5) at the corresponding position of the two sleeves A (11). A plug rod (14) is slidably connected in the sleeve A (11) and sleeve B (12) on the outer wall of each opening (6) and the outer wall of the door body (5). A handle (13) is provided on the plug rod (14). A handle (15) is provided on the outer wall of the middle part of the other side of the door body (5).

9. The fluorite concentrate ball milling apparatus according to claim 1, characterized in that: Multiple disassembly holes (43) are provided at intervals around the square slide bar (25) on the circular convex plate (21).

10. The ball milling apparatus for fluorite concentrate according to claim 1, characterized in that: A connecting pipe (32) is provided at the outer end of the material feeding hole (31). An external thread is provided on the outer wall of the connecting pipe (32), and an internal thread is provided on the cover (27). The cover (27) is screwed together with the external thread provided on the connecting pipe (32) through the internal thread.

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