A crushing and separating device for molybdenum ore beneficiation

Abstract

This invention discloses a crushing and separating device for molybdenum ore beneficiation, relating to the field of ball mill equipment technology. It includes: a support, on which a power module is mounted and rotatably connected to two symmetrically distributed end caps, each end cap having a material inlet; a receiving cylinder is fixedly connected to the opposing sides of the two end caps; and several guide units are equidistantly distributed within the receiving cylinder. Each guide unit includes: an inner cylinder, rotatably and sealingly connected to the receiving cylinder; and several uniformly distributed U-shaped members are hinged to the receiving cylinder near the inner cylinder, with multiple support rods hinged to the U-shaped members. This invention controls the relative position of the inner cylinder and the receiving cylinder to change the angle between the U-shaped members and the support rods, thereby controlling the efficiency with which the U-shaped members and support rods throw the grinding balls. This allows the distribution of impact energy and grinding energy to match the distribution of material within the receiving cylinder, thus achieving energy savings, improved product particle size uniformity, and reduced over-grinding probability.

Description

Technical Field

[0001] This invention relates to the field of ball mill equipment technology, and in particular to a crushing and separation device for molybdenum ore beneficiation. Background Technology

[0002] Molybdenum ore, a vital strategic metal with high melting point, high strength, and excellent corrosion resistance, is known as a "strategic mineral representing the future of metals" and is widely used in steel, military, electronics, chemical, and many other fields. After mining, molybdenum ore contains impurities and requires crushing before being sorted according to its physical properties. Currently, the material after initial crushing is often further pulverized using a ball mill: during the rotation of the drum, the liners drive the grinding balls and the material to move together, using the impact force of the grinding balls to break up large pieces of material and utilizing the inter-ball phase... The grinding of fine materials is achieved through motion; however, in a continuously operating ball mill, the material flows in one direction, resulting in uneven particle size distribution in different sections of the cylinder: the feed end is dominated by large particles, while the discharge end is dominated by fine particles. Since the cylinder rotates at a fixed speed throughout, the distribution of impact and grinding energy fails to match the actual needs of each section, resulting in excessive grinding energy in the feed area and excessive impact energy in the discharge area. This unreasonable energy configuration not only increases energy consumption and production costs, but also leads to uneven particle size distribution and an increased probability of over-grinding. Summary of the Invention

[0003] This invention provides a crushing and separation device for molybdenum ore beneficiation, which overcomes the shortcomings of ball mills during operation, such as uneven product particle size distribution and increased probability of over-grinding due to unreasonable energy configuration.

[0004] The technical solution is: a crushing and separating device for molybdenum ore beneficiation, comprising: a support, on which a power module is mounted and rotatably connected to two symmetrically distributed end caps, each end cap having a material inlet; a receiving cylinder is fixedly connected to the opposing sides of the two end caps; the receiving cylinder is driven by the power module via a gear set; a plurality of guide units are equidistantly distributed inside the receiving cylinder, the guide units being used to guide the movement of grinding balls; each guide unit includes: an inner cylinder, sealed and rotatably connected inside the receiving cylinder; a plurality of uniformly distributed U-shaped parts are hinged to the receiving cylinder near the inner cylinder; a plurality of support rods are hinged to the U-shaped parts; each support rod is provided with a swing rod hinged to the inner cylinder; and an adjustment component is provided on the receiving cylinder for controlling the relative position of the inner cylinder and the receiving cylinder.

[0005] Furthermore, the adjustment assembly includes: a main fixing seat, detachably connected to the outside of the inner cylinder, a T-shaped piece hinged to the main fixing seat, a secondary fixing seat fixed to the receiving cylinder near the main fixing seat, a U-shaped block rotatably connected to the secondary fixing seat, and two nuts threadedly connected to the T-shaped piece, the two nuts jointly locking the relative position of the T-shaped piece and the U-shaped block.

[0006] Furthermore, a hinge portion is provided at the hinge joint between the support rod and the adjacent U-shaped member, the hinge portion being used to facilitate the movement of the grinding ball.

[0007] Furthermore, the support rod is hinged to the adjacent swing rod, and a torsion spring is fixed between the support rod and the U-shaped member.

[0008] Furthermore, the swing rod is fixedly connected to a limiting block, which is used to limit the maximum included angle between adjacent swing rods and adjacent support rods.

[0009] Furthermore, the inner side of the inner cylinder is fixed with a plurality of annularly distributed protruding ridges, which are used to increase the friction between the material and the grinding balls and the inner cylinder.

[0010] Furthermore, the support is fixedly connected to a collection shell that is rotatably and sealingly connected to the receiving cylinder. The lower side of the collection shell is provided with a discharge hole. The collection shell is detachably connected with a sealing cover. The receiving cylinder is provided with mounting grooves near the U-shaped part. A screen is embedded in the mounting groove and contacts the adjacent inner cylinder. The inner cylinder is provided with multiple screening grooves that are evenly distributed at equal intervals near the adjacent U-shaped part. The screening grooves correspond to the adjacent mounting grooves and are used to discharge materials with the required particle size from the receiving cylinder.

[0011] Furthermore, all the screening troughs adjacent to the same U-shaped member are staggered with all the support rods on the U-shaped member.

[0012] Furthermore, the distance between two adjacent support rods is less than the diameter of the smallest grinding ball.

[0013] Furthermore, a guide slope is provided on the inner cylinder near the adjacent screening trough. The guide slope is connected to the adjacent screening trough and is used to guide the material in the adjacent screening trough to be discharged.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention controls the relative position of the inner cylinder and the receiving cylinder to change the angle between the U-shaped part and the support rod, thereby controlling the efficiency of the U-shaped part and the support rod in throwing the grinding balls, so that the distribution of impact energy and grinding energy can match the distribution state of the material in the receiving cylinder, thereby achieving the effects of saving energy, improving the uniformity of product particle size, and reducing the probability of over-grinding.

[0015] By relying on the torsion spring to maintain the angle between the support rod and the U-shaped component, the support rod and the U-shaped component can not only drive the grinding ball to move, but also buffer the impact force of the grinding ball on the U-shaped component when it hits the U-shaped component, thanks to the change in the angle between the support rod and the U-shaped component and the torsion of the torsion spring. This reduces the wear rate of the support rod and the U-shaped component and extends their service life.

[0016] By relying on the screen to discharge materials with the required particle size at various positions in the container in real time, the probability of the material being over-crushed is reduced, the crushing quality of molybdenum ore is improved, and the screen is protected by U-shaped parts and support rods to prevent the screen from being directly impacted by the grinding balls. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the housing cylinder and collecting shell of the present invention; Figure 3 This is a three-dimensional structural diagram of the housing cylinder and inner cylinder of the present invention; Figure 4 This is a three-dimensional structural diagram of the inner cylinder and U-shaped component of the present invention; Figure 5 This is a three-dimensional structural diagram of the U-shaped component and support rod of the present invention; Figure 6 This is a three-dimensional structural diagram of the main fixing base and the T-shaped component of the present invention; Figure 7 This is a three-dimensional structural diagram of the inner cylinder and screen of the present invention.

[0018] Reference numerals: 1-Support, 2-Power module, 3-End cap, 301-Material inlet, 4-Receiving cylinder, 401-Mounting groove, 5-Collection shell, 501-Discharge hole, 6-Sealing cap, 7-Inner cylinder, 8-U-shaped part, 9-Support rod, 901-Hinge, 10-Swing rod, 11-Main fixed seat, 12-T-shaped part, 13-Secondary fixed seat, 14-U-shaped block, 15-Nut, 16-Limiting block, 17-Torsion spring, 18-Protruding ridge, 19-Screen, 191-Screening trough, 192-Guiding slope. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 This embodiment provides a crushing and separation device for molybdenum ore beneficiation, which solves the problem that in the operation of existing ball mills, the product particle size distribution is uneven and the probability of over-grinding is increased due to unreasonable energy configuration.

[0021] See Figures 1 to 3 A crushing and separating device for molybdenum ore beneficiation includes: a support 1, on which a power module 2 is mounted and rotatably connected to two symmetrically distributed end caps 3, each end cap 3 having a material inlet 301; a receiving cylinder 4 is fixedly connected to the opposing sides of the two end caps 3, the receiving cylinder 4 being driven by the power module 2 through a gear set, and a number of guide units equidistantly distributed on the left and right sides are provided inside the receiving cylinder 4, the number of which is three, the guide units being used to guide the movement of grinding balls.

[0022] See Figures 3 to 5 The guiding unit includes: an inner cylinder 7, which is rotatably and sealed within a receiving cylinder 4. Eight U-shaped pieces 8 are hinged to the receiving cylinder 4 near the inner cylinder 7, and eight support rods 9 are hinged to one side of the U-shaped pieces 8 in the circumferential rotation direction, which are equidistantly distributed on the left and right. The support rods 9 are provided with swing rods 10, which are hinged to the inner cylinder 7. An adjustment component is provided on the receiving cylinder 4 to control the relative position of the inner cylinder 7 and the receiving cylinder 4.

[0023] It should be noted that in this embodiment, both the left and right end caps 3 are provided with a material inlet 301, wherein the material inlet 301 on the right side is used to allow material to enter the receiving cylinder 4, and the material inlet 301 on the left side is used to allow material to be discharged to the outside of the receiving cylinder 4; the arrangement relationship between the support rod 9 and the swing rod 10 can be regarded as a fixed connection.

[0024] The above setup enables the control of the relative positions of the inner cylinder 7 and the receiving cylinder 4 to change the angle between the U-shaped part 8 and the support rod 9, thereby changing the distance between the U-shaped part 8 and the central axis of the receiving cylinder 4. Thus, inside the receiving cylinder 4, the angle between the U-shaped part 8 and the support rod 9 on different inner cylinders 7 is controlled to change sequentially, thereby controlling the efficiency of the U-shaped part 8 and the support rod 9 in throwing the grinding balls. This allows the distribution of impact energy and grinding energy to match the distribution of materials within the receiving cylinder 4, thereby achieving the effects of saving energy, improving product particle size uniformity, and reducing the probability of over-grinding.

[0025] See Figure 3 , Figure 4 and Figure 6 The adjustment assembly includes: a main fixing seat 11, detachably connected to the outside of the inner cylinder 7 (see...). Figure 3 The receiving cylinder 4 has a through hole at the position corresponding to the main fixing seat 11. The through hole allows the main fixing seat 11 to pass through the receiving cylinder 4. The main fixing seat 11 is hinged to a T-shaped piece 12. The receiving cylinder 4 is fixed to a secondary fixing seat 13 near the main fixing seat 11. The secondary fixing seat 13 is rotatably connected to a U-shaped block 14. The U-shaped block 14 has a U-shaped groove in the middle. The T-shaped piece 12 is placed in the U-shaped groove. The T-shaped piece 12 is threadedly connected to two nuts 15. The two nuts 15 are located on both sides of the U-shaped block 14. The two nuts 15 together lock the relative position of the T-shaped piece 12 and the U-shaped block 14.

[0026] The above setup enables the T-shaped piece 12 and the U-shaped block 14 to be locked relative to each other by relying on the nut 15, thereby restricting the movement of the main fixed seat 11 and the inner cylinder 7. In this way, the relative position of the inner cylinder 7 and the receiving cylinder 4 is locked. When it is necessary to rotate the inner cylinder 7, the T-shaped piece 12 can be moved by rotating the nut 15, which makes it easy to adjust the position of the inner cylinder 7.

[0027] See Figure 5 A hinge portion 901 is provided at the hinge joint between the support rod 9 and the adjacent U-shaped piece 8. The hinge portion 901 is cylindrical, and the diameter of the hinge portion 901 is greater than the thickness of the support rod 9 at other positions. When the support rod 9 moves the grinding ball, it reduces the probability of the grinding ball slipping off the support rod 9, thereby facilitating the movement of the grinding ball.

[0028] See Figure 3 and Figure 4 The inner cylinder 7 has a plurality of annularly distributed protruding ribs 18 fixed to its inner side. The protruding ribs 18 are used to increase the friction between the material and the grinding balls and the inner cylinder 7, so that the inner cylinder 7 can drive the grinding balls and the material to move together during the rotation.

[0029] Crushing Process: The device is installed on a support platform. Then, based on the hardness of the molybdenum ore and the overall feed rate of the beneficiation production line, the rotational speed of the receiving cylinder 4, the angle between the U-shaped component 8 and the support rod 9, and the number and particle size of the grinding balls are set. This ensures that, from right to left within the receiving cylinder 4, the angle between the U-shaped component 8 and the support rod 9 in different inner cylinders 7 increases sequentially. The power module 2 is then activated, and it drives the receiving cylinder 4 to rotate clockwise via a gear set (see attached diagram). Figure 3(The main view is described from a rotating perspective). The pre-crushed molybdenum ore is fed into the receiving cylinder 4 through the feed port 301 on the right. The receiving cylinder 4 drives the inner cylinder 7 to rotate, which in turn drives the U-shaped part 8, support rod 9, swing rod 10, and protruding rib 18 to rotate circumferentially. During the movement, the U-shaped part 8 and support rod 9 "scoop up" the grinding balls and material and move them together. The ease with which the U-shaped part 8 and support rod 9 can move the grinding balls and material varies depending on the angle between them. When the angle between the U-shaped part 8 and support rod 9 is small, it is easier for them to move the grinding balls and material. When the angle is large, it is more difficult for them to move the grinding balls and material. In this way, the impact energy gradually decreases and the grinding energy gradually increases in the direction from right to left in the receiving cylinder 4, thus adapting to the changes in the particle size of the material in the receiving cylinder 4.

[0030] As the material moves from right to left within the container 4, the particle size gradually decreases. The material is continuously discharged through the feed port 301 on the left side, thus saving unnecessary impact and grinding energy, achieving the goal of reducing energy consumption. In addition, it can reduce the probability of small-diameter materials being impacted, thereby reducing the probability of the material being over-crushed.

[0031] Example 2 This embodiment is a further optimization based on embodiment 1, in order to slow down the wear rate of the support rod 9 and the U-shaped part 8.

[0032] See Figure 5 The support rod 9 is hinged to the adjacent swing rod 10. A torsion spring 17 is fixed between the support rod 9 and the U-shaped part 8. The torsion spring 17 is in a torsional storage state, and under the action of the torsion spring 17, the included angle between the support rod 9 and the adjacent U-shaped part 8 always tends to increase.

[0033] See Figure 5 The swing rod 10 is fixedly connected to the limiting block 16. The limiting block 16 is used to limit the maximum angle between the adjacent swing rod 10 and the adjacent support rod 9, thereby reducing the angle between the support rod 9 and the adjacent U-shaped part 8, and thus reducing the probability that the grinding ball will slip off the support rod 9 during the process of the support rod 9 moving the grinding ball.

[0034] The above configuration enables the support rod 9 and the U-shaped part 8 to maintain the angle between them by the torsion spring 17. This allows the support rod 9 and the U-shaped part 8 to not only move the grinding ball, but also buffer the impact force of the grinding ball on the U-shaped part 8 when it hits it. This is achieved by the change in the angle between the support rod 9 and the U-shaped part 8 and the torsion of the torsion spring 17. As a result, the wear rate of the support rod 9 and the U-shaped part 8 is reduced, and the service life of the support rod 9 and the U-shaped part 8 is extended.

[0035] Example 3 This embodiment is a further optimization based on embodiment 2, in order to further reduce the probability of the material being over-crushed.

[0036] See Figures 1 to 4 and Figure 7 The support 1 is fixedly connected to a collection shell 5 that is rotatably and sealingly connected to the receiving cylinder 4. A discharge hole 501 is provided on the lower side of the collection shell 5, which is located above the middle of the support 1. A sealing cover 6 is detachably connected to the upper side of the collection shell 5. After removing the sealing cover 6, the user can adjust the position of the T-shaped part 12 and the nut 15. The receiving cylinder 4 is provided with a mounting groove 401 near the U-shaped part 8. A screen 19 is embedded in the mounting groove 401 and contacts the adjacent inner cylinder 7. The inner cylinder 7 is provided with multiple screening grooves 191 that are evenly distributed at equal intervals near the adjacent U-shaped part 8. The screening grooves 191 correspond to the adjacent mounting grooves 401, and the area of ​​the screening grooves 191 corresponding to the adjacent mounting grooves 401 increases as the angle between the U-shaped part 8 and the support rod 9 increases, which is used to discharge materials with the required particle size from the receiving cylinder 4.

[0037] The above setup enables the screen 19 to discharge materials with the required particle size from various positions in the container 4 in real time, thereby reducing the probability of over-grinding the material and improving the crushing quality of the molybdenum ore. Furthermore, the U-shaped part 8 and the support rod 9 provide protection for the screen 19, preventing it from being directly impacted by the grinding balls, thus protecting the screen 19.

[0038] It should be noted that in this embodiment, only the right end cap 3 is provided with a material inlet 301. The right material inlet 301 is used to allow materials to enter the receiving cylinder 4. The materials in the receiving cylinder 4 are discharged through the screen 19 and the discharge hole 501.

[0039] See Figure 7 All screening troughs 191 adjacent to the same U-shaped component 8 are staggered with all support rods 9 on the U-shaped component 8, so that the material can continuously contact the screen 19 during the process of passing through the U-shaped component 8 and the support rods 9, thereby increasing the probability of material of the standard particle size passing through the screen 19. In the process of the grinding ball hitting the U-shaped component 8, causing the U-shaped component 8, support rods 9 and swing rods 10 to swing and the torsion spring 17 to twist, the swing of the support rods 9 and the swing rods 10 can squeeze the material located between the U-shaped component 8 and the support rods 9 to the back side of the rotation direction of the U-shaped component 8, so as to promote the discharge of the material and reduce the probability of the material getting stuck between the U-shaped component 8 and the support rods 9. The distance between two adjacent support rods 9 is less than the diameter of the smallest grinding ball, so that the support rods 9 can block the grinding ball, thereby reducing the probability of the grinding ball directly contacting the screen 19 and causing damage to the screen 19.

[0040] See Figure 7The inner cylinder 7 is provided with guide slopes 192 near the adjacent screening troughs 191. The guide slopes 192 are located on the back side of the adjacent screening troughs 191 in the circumferential rotation direction and are connected to the adjacent screening troughs 191. The guide slopes 192 are used to guide the material in the adjacent screening troughs 191 to be discharged.

[0041] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A crushing and separating device for molybdenum ore beneficiation, characterized in that, include: Support (1), on which a power module (2) is mounted and rotatably connected are two symmetrically distributed end caps (3), the end caps (3) are provided with a material port (301), and the two end caps (3) are fixedly connected to a receiving cylinder (4) on opposite sides. The receiving cylinder (4) is driven by the power module (2) through a gear set. Several guide units are provided in the receiving cylinder (4) at equal intervals. The guide units are used to guide the movement of the grinding balls. The guiding unit includes: an inner cylinder (7) which is rotatably and sealed inside the receiving cylinder (4); a plurality of U-shaped parts (8) are hinged to the receiving cylinder (4) near the inner cylinder (7); a plurality of support rods (9) are hinged to the U-shaped parts (8); the support rods (9) are provided with swing rods (10) that are hinged to the inner cylinder (7); and the receiving cylinder (4) is provided with an adjustment component for controlling the relative position of the inner cylinder (7) and the receiving cylinder (4). The adjustment component includes: The main fixing seat (11) is detachably connected to the outside of the inner cylinder (7). The main fixing seat (11) is hinged with a T-shaped piece (12). The receiving cylinder (4) is fixed with a secondary fixing seat (13) near the main fixing seat (11). The secondary fixing seat (13) is rotatably connected with a U-shaped block (14). The T-shaped piece (12) is threaded with two nuts (15). The two nuts (15) together lock the relative position of the T-shaped piece (12) and the U-shaped block (14). The support (1) is fixedly connected to a collection shell (5) that is rotatably and sealingly connected to the receiving cylinder (4). The lower side of the collection shell (5) is provided with a discharge hole (501). The collection shell (5) is detachably connected with a sealing cover (6). The receiving cylinder (4) is provided with a mounting groove (401) near the U-shaped part (8). A screen (19) is embedded in the mounting groove (401). The screen (19) contacts the adjacent inner cylinder (7). The inner cylinder (7) is provided with multiple screening grooves (191) that are evenly distributed at equal intervals near the adjacent U-shaped part (8). The screening grooves (191) correspond to the adjacent mounting grooves (401) and are used to discharge materials with qualified particle size from the receiving cylinder (4). All the screening grooves (191) adjacent to the same U-shaped member (8) are staggered with all the support rods (9) on the U-shaped member (8); The distance between two adjacent support rods (9) is less than the diameter of the smallest grinding ball.

2. The crushing and separating device for molybdenum ore beneficiation according to claim 1, characterized in that, The support rod (9) is provided with a hinge part (901) at the hinge joint with the adjacent U-shaped member (8), and the hinge part (901) is used to facilitate the movement of the grinding ball.

3. The crushing and separating device for molybdenum ore beneficiation according to claim 2, characterized in that, The support rod (9) is hinged to the adjacent swing rod (10), and a torsion spring (17) is fixed between the support rod (9) and the U-shaped member (8).

4. The crushing and separating device for molybdenum ore beneficiation according to claim 3, characterized in that, The swing rod (10) is fixed to a limiting block (16), which is used to limit the maximum included angle between the adjacent swing rod (10) and the adjacent support rod (9).

5. A crushing and separating device for molybdenum ore beneficiation according to claim 4, characterized in that, The inner cylinder (7) has a plurality of annularly distributed protrusions (18) fixed to its inner side. The protrusions (18) are used to increase the friction between the material and the grinding ball and the inner cylinder (7).

6. A crushing and separating device for molybdenum ore beneficiation according to claim 5, characterized in that, The inner cylinder (7) is provided with guide slopes (192) near the adjacent screening troughs (191). The guide slopes (192) are connected to the adjacent screening troughs (191) and are used to guide the material in the adjacent screening troughs (191) to be discharged.

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