Large flake graphite pre-fracture crushing dissociation device and method

Abstract

The invention discloses a large-flake graphite pre-fracture crushing dissociation device and method, and belongs to the field of ore treatment equipment. Comprising a feeding barrel, a crushing device and a winnowing barrel, the crushing device comprises an insulating cylinder; the insulating cylinder is obliquely arranged, the high end of the insulating cylinder is communicated with the feeding barrel, and the low end of the insulating cylinder is communicated with the winnowing cylinder; trapezoidal electrodes are oppositely arranged on the inner wall of the insulating cylinder; the winnowing cylinder comprises a cylinder body; the cylinder body is U-shaped, the side surface of one end of the U-shaped cylinder body is communicated with the insulating cylinder through the feeding hole, and the other end of the U-shaped cylinder body is provided with the sorting device and the collecting device. The crystalline flake graphite can be effectively separated in time, the dissociated crystalline flake graphite is prevented from being over-ground, and the purpose of protecting the large crystalline flake graphite to the maximum extent is achieved. And meanwhile, the crystalline flake graphite of different sizes can be directly screened through wind energy in the winnowing device, energy is saved, the crystalline flake graphite does not need to be moved to other equipment for operation, and efficiency is improved.

Description

Technical Field

[0001] This invention relates to a pre-fractured and disintegrated device and method for large-flake graphite, belonging to the field of ore processing equipment. Background Technology

[0002] Existing graphite ore beneficiation methods mostly employ multi-stage grinding and flotation. From raw graphite ore to graphite concentrate, ball mills or rod mills are used for several grinding processes. These indiscriminate grinding processes damage a large number of large graphite flakes, reducing their economic value. Furthermore, after separation, the ore needs to be transferred to other equipment for further screening according to size, which is cumbersome. Therefore, improvements are needed. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems existing in the background art by providing a device and method for pre-fractured and disintegrated large flake graphite.

[0004] The present invention achieves the above objectives by adopting the following technical solution:

[0005] A pre-fractured and disintegrated device for large flake graphite includes a feed hopper, a crushing device, and an air classifier. The crushing device includes an insulating cylinder. The insulating cylinder is inclined, with one end of the insulating cylinder at a higher position connected to the feed hopper and the other end of the insulating cylinder at a lower position connected to the air classifier. Trapezoidal electrodes are provided opposite each other on the inner wall of the insulating cylinder.

[0006] The air separator includes a cylinder body; the cylinder body is U-shaped, with one side of the U-shaped cylinder body connected to the insulating cylinder through a feed inlet, and the other end of the U-shaped cylinder body is provided with a sorting device and a collecting device.

[0007] A method of using a pre-fractured and disintegrated device for large-flake graphite, the method comprising the following steps:

[0008] Step 1: Put the crushed raw stone into the feed hopper, and it will be transported to the inside of the insulating cylinder through the feed hopper;

[0009] Step 2: High-voltage short pulses are released through trapezoidal electrodes to break the raw stone into gangue and flake graphite;

[0010] Step 3: Under the influence of gravity, the gangue and flake graphite slide into the cylinder. Under the action of the fan, the gangue moves downward into the collection container, and the flake graphite moves with the wind into the fixed cylinder.

[0011] Step Four: Under the action of wind, small-sized flake graphite passes through the sieve holes and is moved into the collection bucket II by the obstruction of the spiral plate II, while large-sized flake graphite slides down along the spiral plate I into the collection bucket I. Compared with the prior art, the beneficial effects of this invention are: this invention can effectively and promptly separate flake graphite, avoiding over-grinding of the dissociated flake graphite and achieving the goal of maximizing the protection of large flake graphite. At the same time, this invention can also utilize the wind energy within the air separation device to directly screen flake graphite of different sizes, saving energy and eliminating the need to move the flake graphite to other equipment for operation, thus improving efficiency. Attached Figure Description

[0012] Figure 1 This is a front view of a pre-fractured and disintegrated device for large-flake graphite according to the present invention;

[0013] Figure 2 This is a front view of the feed bucket of a large-flake graphite pre-fractured and disintegrated device according to the present invention;

[0014] Figure 3 This is a front view of the crushing device of a pre-fractured and disintegrated large-flake graphite device according to the present invention;

[0015] Figure 4 yes Figure 3 Sectional view along the AA direction;

[0016] Figure 5 This is a front sectional view of the air separator of a large-flake graphite pre-fractured and disintegrated device according to the present invention;

[0017] Figure 6 This is a front view of the air separator of a large-flake graphite pre-fracture and disintegration device according to the present invention;

[0018] Figure 7 This is a front sectional view of the collection device of a pre-fractured and disintegrated large-flake graphite device according to the present invention;

[0019] Figure 8 This is a front sectional view of the shaft of a large-flake graphite pre-fracture and disintegration device according to the present invention;

[0020] Figure 9 This is a front view of the shaft of a large-flake graphite pre-fracture and disintegration device according to the present invention;

[0021] Figure 10 This is a side view of the shaft of a pre-fractured and disintegrated device for large-flake graphite according to the present invention;

[0022] Figure 11 This is a front sectional view of the sorting device of a pre-cracked and disintegrated large-flake graphite pre-fracture device according to the present invention;

[0023] Figure 12 This is a schematic diagram of the spiral plate I of a large-flake graphite pre-fracture and disintegration device according to the present invention;

[0024] Figure 13 This is a schematic diagram of the spiral plate II of a large-flake graphite pre-fracture and disintegration device according to the present invention;

[0025] Figure 14 yes Figure 13 A cross-sectional view along the BB direction. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0027] Specific implementation method one: as follows Figure 1-14 As shown, this embodiment describes a pre-fractured and disintegrated device for large-flake graphite, including a feed hopper 1, a crushing device 2, and an air separator 3; the crushing device 2 includes an insulating cylinder 21; the insulating cylinder 21 is inclined, with the higher end of the insulating cylinder 21 connected to the feed hopper 1 and the lower end of the insulating cylinder 21 connected to the air separator 3; trapezoidal electrodes 22 are provided opposite each other on the inner wall of the insulating cylinder 21;

[0028] The air separator 3 includes a cylinder 31; the cylinder 31 is U-shaped, with one end of the U-shaped cylinder 31 connected to the insulating cylinder 21 via a feed inlet 32, and the other end of the U-shaped cylinder 31 is equipped with a sorting device 5 and a collecting device 4. The raw ore comes into contact with the trapezoidal electrode 22, which releases a high-voltage short pulse to break up the raw ore, reducing wear caused by the collision between the flake graphite and gangue.

[0029] The feed hopper 1 is equipped with an auger, which continuously feeds the initially crushed ore into the insulating cylinder 21.

[0030] The side of the cylinder 31 near the feed inlet 32 ​​is provided with an inclined outer shell 34. The outer shell 34 is connected to the cylinder 31 through the connecting hole 33, and a fan 35 is provided inside the outer shell 34.

[0031] The end of the cylinder 31 away from the crushing device 2 is connected to a fixed cylinder 38 by a thread; the fixed cylinder 38 is provided with a sorting device 5 inside.

[0032] The sorting device 5 includes a spiral plate I 51 and a spiral plate II 53. The spiral plate II 53 is fixedly connected to the inner wall of the fixed cylinder 38. The spiral plate I 51 is slidably disposed inside the fixed cylinder 38, and is positioned above the spiral plate II 53. A gap exists between the spiral plate I 51 and the spiral plate II 53. A limiting block I 54 is fixedly connected to the outer wall of the spiral plate I 51. A slide rail 36 is provided on the inner wall of the fixed cylinder 38 to slide with the limiting block I 54. A limiting block II 52 is fixedly connected to the inner wall of the spiral plate I 51. The limiting block II 52 slides with a limiting groove 411 on the outer surface of the shaft 46 located at the center of the spiral plate I 51. The spiral plates I 51 and II 53 screen flake graphite of different sizes under the influence of wind and gravity, making reasonable use of the wind energy within the air separator 3 and saving energy.

[0033] A baffle plate 55 is fixedly connected at the lowest point of the spiral plate II 53. The baffle plate 55 blocks the gap between the spiral plate I 51 and the spiral plate II 53 at the lowest point, preventing small-sized flake graphite from passing through this position and mixing with large-sized flake graphite again.

[0034] The spiral plate I51 is provided with multiple vertical sieve holes. The sieve holes are used for small-sized flake graphite to pass through, thereby completing the sieving process.

[0035] The upper end face of the spiral plate II 53 is provided with an inclined surface that slopes towards the direction of the fixed cylinder 38. This allows small-sized flake graphite to slide down along the inclined surface after passing through the sieve holes.

[0036] The fixed cylinder 38 is provided with a spiral groove 37 that penetrates the outer wall of the fixed cylinder 38, and the spiral groove 37 is connected to the gap between the spiral plate I 51 and the spiral plate II 53. This allows small-sized flake graphite to pass through the spiral groove 37 and enter the collection bucket II 49.

[0037] The limiting groove 411 includes a vertical groove 4112 and an inclined groove 4111; the central angle corresponding to the projection of the inclined groove 4111 onto the horizontal plane is 360°; one end of the inclined groove 4111 is connected to the upper end of the vertical groove 4112, and the other end of the inclined groove 4111 is connected to the lower end of the vertical groove 4112. Through the cooperation of the limiting block II 52 and the limiting groove 411, the spiral plate I 51 can move up and down, thereby generating vibration, which allows the large-sized flake graphite at the upper end of the spiral plate I 51 to slide down along the spiral plate I 51.

[0038] The collecting device 4 includes a collecting bucket I 42 and a collecting bucket II 49. The collecting bucket II 49 is threadedly connected to the end of the cylinder 31 away from the crushing device 2, and the side of the collecting bucket II 49 is provided with multiple air outlets 412. The bottom of the collecting bucket II 49 is hollowed out, and a ring 48 is fixedly connected to the bottom of the outer wall of the collecting bucket II 49. The collecting bucket I 42 is threadedly connected to the outside of the ring 48, and a motor 41 is fixedly connected to the bottom of the collecting bucket I 42 by a bracket. A transmission cylinder 44 is fixedly connected to the output shaft of the motor 41. The transmission cylinder 44 passes through the collecting bucket I 42 and slides with a rectangular rod 45. The rectangular rod 45 is fixedly connected to the lower end of the shaft 46. An annular baffle 47 is fixedly connected to the lower middle part of the outer side of the shaft 46 by a connecting rod 43. The baffle 47 seals the space enclosed by the inner side of the collecting bucket II 49 and the outer side of the fixed cylinder 38, and a brush 410 that contacts the inner wall of the collecting bucket II 49 is fixedly connected to the upper end of the baffle 47. When the shaft 46 rotates, it also drives the connecting rod 43 and the baffle 47 to rotate together, which in turn drives the brush 410 to rotate, scraping off the small-sized flake graphite on the inner wall of the collection bucket II 49 to avoid blocking the air outlet 412.

[0039] A method of using a pre-fractured and disintegrated device for large-flake graphite, the method comprising the following steps:

[0040] Step 1: The crushed raw stone is put into the feed hopper 1 and conveyed to the inside of the insulating cylinder 21 through the feed hopper 1;

[0041] Step 2: High-voltage short pulses are released through trapezoidal electrode 22 to break the raw stone into gangue and flake graphite;

[0042] Step 3: Under the action of gravity, the gangue and flake graphite slide into the cylinder 31. Under the action of the wind force of the fan 35, the gangue moves downward into the collection container, and the flake graphite moves with the wind into the fixed cylinder 38.

[0043] Step 4: Under the action of wind, small-sized flake graphite passes through the sieve holes and is blocked by the spiral plate II 53 and moves into the collection bucket II 49, while large-sized flake graphite slides down along the spiral plate I 51 into the collection bucket I 42.

[0044] The working principle of this invention is as follows: the crushed raw stone is put into the feeding barrel 1 and transported to the inside of the insulating cylinder 21 through the feeding barrel 1;

[0045] High-voltage short pulses are released through trapezoidal electrode 22 (using the principle of selective fragmentation at the crystal interface between the target mineral and impurity minerals) to break the raw stone into gangue and flake graphite.

[0046] Under the influence of gravity, the gangue and flake graphite slide into the cylinder 31. Under the influence of the wind force of the fan 35, based on the difference in drag force caused by the difference between the flake graphite sheet structure and the gangue particle shape, the gangue with larger mass moves downward into the collection container, and the flake graphite moves with the wind into the fixed cylinder 38.

[0047] Because the cylinder 31 is U-shaped, the flowing air changes direction and flows downward after passing through the bend of the cylinder 31. Under the action of wind and gravity, the flake graphite comes into contact with the spiral plate I 51, allowing the small-sized flake graphite to pass through the sieve holes. After passing through the sieve holes, because the upper end of the spiral plate II 53 is inclined, and the gap between the spiral plate I 51 and the spiral plate II 53 is connected to the spiral groove 37, the small-sized flake graphite is blocked by the upper inclined surface of the spiral plate II 53. After the flowing air passes through the sieve holes, it blows the small-sized flake graphite located on the inclined surface of the spiral plate II 53 again, causing it to pass through the spiral groove 37 under the influence of gravity and wind, and move into the collection bucket II 49. The large-sized flake graphite slides down along the spiral plate I 51 into the collection bucket I 42 under the influence of its own gravity.

[0048] During the screening process, the motor 41 is started, which drives the transmission cylinder 44 to rotate, which in turn drives the rectangular rod 45 to rotate. The rectangular rod 45 drives the shaft 46 to rotate. During the rotation of the shaft 46, the limiting groove 411 on the outer circular surface of the shaft 46 also rotates, causing the limiting block II 52 on the inner side of the spiral plate I 51 to move up and down during the rotation of the limiting groove 411 (the limiting block I 54 on the outer side of the spiral plate I 51 slides and engages with the vertically set slide rail 36 to restrict the rotation of the spiral plate I 51). When the limiting block II 52 is inside the inclined groove 4111, as the shaft 46 rotates, the limiting block II 52 moves along the inclined groove 4111, causing the spiral plate I 51 to move upward. When the limiting block II 52 moves to the position where the inclined groove 4111 and the top of the vertical groove 4112 are connected, the motor 41 stops rotating. Under the action of gravity, the limiting block II 52 moves downward to the bottom of the vertical groove 4112. Then the motor 41 is started again to repeat the above operation.

[0049] When the limiting block II 52 moves downward within the vertical groove 4112, it drives the spiral plate I 51 to move downward together and generates vibration. This causes the large-sized flake graphite at the upper end of the spiral plate I 51 to slide downward along the spiral plate I 51 under the influence of vibration. At the same time, the small-sized flake graphite changes position under the influence of vibration, allowing the small-sized flake graphite located in the gaps between the large-sized flake graphite to pass through the sieve holes, ensuring the effect of preliminary screening.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pre-fractured and disintegrated device for large-flake graphite, characterized in that: It includes a feed hopper (1), a crushing device (2), and an air separator (3); the crushing device (2) includes an insulating cylinder (21); the insulating cylinder (21) is inclined, with the higher end of the insulating cylinder (21) connected to the feed hopper (1) and the lower end of the insulating cylinder (21) connected to the air separator (3); trapezoidal electrodes (22) are provided on the inner wall of the insulating cylinder (21). The air separator (3) includes a cylinder (31); the cylinder (31) is U-shaped, and the side of one end of the U-shaped cylinder (31) is connected to the insulating cylinder (21) through the feed inlet (32), and the other end of the U-shaped cylinder (31) is provided with a sorting device (5) and a collecting device (4).

2. The pre-fractured and disintegrated device for large-flake graphite according to claim 1, characterized in that: The cylinder (31) has an inclined outer shell (34) on one side near the feed inlet (32). The outer shell (34) is connected to the cylinder (31) through a connecting hole (33), and a fan (35) is provided inside the outer shell (34).

3. The pre-fracture and disintegration device for large-flake graphite according to claim 2, characterized in that: The end of the cylinder (31) away from the crushing device (2) is connected to a fixed cylinder (38) by a thread; the fixed cylinder (38) is provided with a sorting device (5) inside.

4. The pre-fracture and disintegration device for large-flake graphite according to claim 3, characterized in that: The sorting device (5) includes a spiral plate I (51) and a spiral plate II (53); the spiral plate II (53) is fixedly connected to the inner wall of the fixed cylinder (38), the spiral plate I (51) is slidably disposed inside the fixed cylinder (38), and the spiral plate I (51) is located above the spiral plate II (53); there is a gap between the spiral plate I (51) and the spiral plate II (53); a limiting block I (54) is fixedly connected to the outer wall of the spiral plate I (51), a slide (36) is provided on the inner wall of the fixed cylinder (38) to slide with the limiting block I (54), and a limiting block II (52) is fixedly connected to the inner wall of the spiral plate I (51); the limiting block II (52) slides with the limiting groove (411) on the outer circular surface of the shaft (46) located at the center of the spiral plate I (51).

5. The pre-fractured and disintegrated device for large-flake graphite according to claim 4, characterized in that: The spiral plate I (51) is provided with multiple vertical sieve holes.

6. The pre-fractured and disintegrated device for large-flake graphite according to claim 4, characterized in that: The upper end face of the spiral plate II (53) is provided with an inclined surface that is inclined in the direction of the fixed cylinder (38).

7. A pre-fractured and disintegrated device for large-flake graphite according to claim 5 or 6, characterized in that: The fixed cylinder (38) is provided with a spiral groove (37) that penetrates the outer wall of the fixed cylinder (38), and the spiral groove (37) is connected to the gap between the spiral plate I (51) and the spiral plate II (53).

8. The pre-fractured and disintegrated device for large-flake graphite according to claim 4, characterized in that: The limiting groove (411) includes a vertical groove (4112) and an inclined groove (4111); the central angle corresponding to the projection of the inclined groove (4111) on the horizontal plane is 360°; one end of the inclined groove (4111) is connected to the upper end of the vertical groove (4112), and the other end of the inclined groove (4111) is connected to the lower end of the vertical groove (4112).

9. The pre-fractured and disintegrated device for large-flake graphite according to claim 8, characterized in that: The collecting device (4) includes a collecting bucket I (42) and a collecting bucket II (49); the collecting bucket II (49) is connected by a thread to the end of the cylinder (31) away from the crushing device (2), and the side of the collecting bucket II (49) is provided with multiple air outlets (412); the bottom of the collecting bucket II (49) is hollowed out, and a ring (48) is fixedly connected to the bottom of the outer wall of the collecting bucket II (49); the collecting bucket I (42) is connected by a thread to the outside of the ring (48), and a motor (41) is fixedly connected to the bottom of the collecting bucket I (42) by a bracket, and a transmission cylinder is fixedly connected to the output shaft of the motor (41). (44); The transmission cylinder (44) passes through the collection bucket I (42) and is slidably engaged with the rectangular rod (45); The rectangular rod (45) is fixedly connected to the lower end of the shaft (46); The lower outer part of the shaft (46) is fixedly connected to an annular baffle (47) through the connecting rod (43); The baffle (47) seals the space formed by the inner side of the collection bucket II (49) and the outer side of the fixed cylinder (38), and the upper end of the baffle (47) is fixedly connected to a brush (410) that contacts the inner wall of the collection bucket II (49).

10. The method of using the pre-fractured and disintegrated device for large-flake graphite according to claim 9, characterized in that: The method of use includes the following steps: Step 1: The crushed raw stone is put into the feed bucket (1) and transported to the inside of the insulating cylinder (21) through the feed bucket (1); Step 2: High-voltage short pulses are released through the trapezoidal electrode (22) to break the raw stone into gangue and flake graphite; Step 3: Under the action of gravity, the gangue and flake graphite slide into the cylinder (31). Under the action of the wind force of the fan (35), the gangue moves downward into the collection container, and the flake graphite moves with the wind into the fixed cylinder (38). Step 4: Under the action of wind, small-sized flake graphite passes through the sieve holes and is blocked by spiral plate II (53) and moves into collection bucket II (49), while large-sized flake graphite slides down along spiral plate I (51) into collection bucket I (42).

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