Stone coal vanadium ore pretreatment device

Abstract

The utility model provides a stone coal vanadium ore pretreatment device which comprises a crushing assembly, a first screening assembly and a second screening assembly, a discharging opening of the first screening assembly is connected to a feeding opening of the crushing assembly, and a feeding opening of the second screening assembly is connected to a discharging opening of the crushing assembly. A feeding port of the crushing assembly comprises a material guide plate, and a static jaw plate and a movable jaw plate matched with the static jaw plate are arranged below the material guide plate. The first screening assembly comprises a feeding part and a screening part, an outlet of the feeding part is connected to an inlet of the screening part, the screening part comprises a plurality of screening drums, the external screening drum is connected to the internal screening drum in a sleeving mode, a partition plate is arranged at the outlet of the screening part, and the partition plate is configured to separate outlets of the multiple screening drums; the second screening assembly comprises a plurality of screens, the screens are sequentially arranged in the vertical direction, and screen holes in the upper screen are larger than screen holes in the lower screen. According to the pretreatment device, the crushing efficiency and the crushing quality of stone coal vanadium ore are improved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of ore dressing, in particular to a stone coal vanadium ore pretreatment device. Background Art

[0002] Stone coal is an inferior anthracite with a low carbon content and calorific value. It is also a low-grade, polymetallic ore. The mining process of stone coal vanadium ore carries along a large amount of waste rock, particularly low-grade ore. If this large amount of waste rock enters the beneficiation plant's production process, it will increase beneficiation processing costs and restrict the plant's ability to increase its raw ore processing capacity. Therefore, how to pre-select the waste rock from the raw ore, reduce its impact on the beneficiation process, reduce the impact of this waste rock on subsequent vanadium extraction processes such as grinding, leaching, power, and reagent costs, improve the beneficiation plant's tailings processing capacity, and alleviate pressure on the tailings pond are the key challenges and key points in the stone coal vanadium ore beneficiation process.

[0003] Before applying X-ray radiation sorting technology to pre-select stone coal vanadium ore, the ore needs to be crushed to a certain particle size. Ore with a particle size of 10-50mm enters the X-ray fine granulator for sorting, and ore with a particle size of 50-300mm enters the X-ray medium granulator for sorting. Particles below 10mm cannot be sorted using X-rays, and particles above 300mm require re-crushing. Ore crushing equipment includes jaw crushers, cone crushers, hammer crushers, impact crushers, and roller crushers. Currently, the most commonly used ore crusher is the jaw crusher, which reduces material particle size through the interaction between the movable and fixed jaws.

[0004] The jaw crusher has the following shortcomings: First, the original ore is directly crushed, resulting in a large proportion of ore with a particle size of less than 10mm. After crushing, the ore particles with sizes of 10-50mm and 50-300mm are scattered, resulting in unsatisfactory subsequent X-ray sorting results. This is because large and small ores are mixed and crushed together, and the small ore will be crushed to a smaller particle size due to the squeezing and collision of the large ore; second, the crushed ore needs to be sorted using a vibrating screen, which produces a lot of noise and dust, resulting in a poor working environment; third, the existing jaw crusher relies entirely on the dynamic jaw plate for crushing. The dynamic jaw plate has a large contact area with the ore and provides a small pressure per unit area, so it requires a large power, resulting in high energy consumption, and the dynamic jaw plate needs to be replaced as a whole after wear, which is costly. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a stone coal vanadium ore pretreatment device to improve the crushing efficiency and crushing quality of the stone coal vanadium ore.

[0006] In order to solve the above technical problems, the present invention provides a stone coal vanadium ore pretreatment device, comprising a crushing assembly, a first screening assembly and a second screening assembly, the discharge port of the first screening assembly is connected to the feed port of the crushing assembly, and the feed port of the second screening assembly is connected to the discharge port of the crushing assembly; the feed port of the crushing assembly includes a guide plate, and a static jaw plate and a movable jaw plate matching the static jaw plate are arranged below the guide plate; the first screening assembly includes a feed part and a screening part, and the outlet of the feed part is connected to the inlet of the screening part; the screening part includes a plurality of screen cylinders, the outer screen cylinder is sleeved on the inner screen cylinder, and the outlet of the screening part is provided with a partition, and the partition is configured to separate the outlets of the plurality of screen cylinders; the second screening assembly includes a plurality of screens, and the plurality of screens are arranged in sequence in the vertical direction and the screen holes of the screens located above are larger than the screen holes of the screens located below.

[0007] Optionally, the material guide plate includes a first material guide plate and a second material guide plate, the static jaw plate is arranged below the first material guide plate, and the movable jaw plate is arranged below the second material guide plate.

[0008] Optionally, the crushing assembly further comprises a first motor, an output end of which is transmission-connected to an eccentric shaft, and the movable jaw plate is provided on the eccentric shaft.

[0009] Optionally, a plurality of breaking pins are provided on the static jaw plate and / or the movable jaw plate.

[0010] Optionally, a plurality of threaded rods are connected to the static jaw plate and / or the movable jaw plate, and a knob is fixed on each of the threaded rods, and the breaking pin is fixed on the knob.

[0011] Optionally, the feeding part includes a funnel, a feeding pipe is provided below the funnel, and a first spiral blade is provided in the feeding pipe, and the first spiral blade is connected to the second motor via a first connecting shaft.

[0012] Optionally, a lifting plate is fixed on the inner wall of each screen cylinder.

[0013] Optionally, a support wheel is fixed on the outermost screen drum; the support wheel is arranged on an annular seat and is configured to rotate along the annular seat.

[0014] Optionally, the second screening assembly further includes a third motor, the third electrode is connected to a second connecting shaft, a second spiral blade is provided on the second connecting shaft, and the second spiral blade is configured to cooperate with the screen to screen materials.

[0015] Optionally, a screen plate is further included, which is arranged below the crushing assembly and connected to the second screening assembly via a limiting screw, and an elastic component is sleeved on the limiting screw.

[0016] Compared with the existing technology, the utility model has the following advantages: the stone coal vanadium ore is preliminarily screened by the first screening component, and the raw ore is graded and crushed by the crushing component, so as to avoid excessive crushing of small ores due to the squeezing of large ores, thereby reducing the ore with a particle size below 10 mm after crushing, increasing the feed capacity of the X-ray sorter, and thus improving the crushing efficiency and crushing quality of the stone coal vanadium ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the present application. They are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present application. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a stone coal vanadium ore pretreatment device according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the stone coal vanadium ore pretreatment device according to one embodiment of the present invention from another angle;

[0020] Figure 3 This is a schematic diagram of the main structure of a stone coal vanadium ore pretreatment device according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of a three-dimensional cross-section structure of a stone coal vanadium ore pretreatment device according to an embodiment of the present invention;

[0022] Figure 5 yes Figure 4 A magnified view of the structure of area A in the middle;

[0023] Figure 6 This is a side view schematic cross-sectional structural diagram of a stone coal vanadium ore pretreatment device according to an embodiment of the present invention;

[0024] Figure 7 yes Figure 6 A magnified view of the structure of the middle B area;

[0025] Figure 8 It is a structural schematic diagram of a material breaking nail in a stone coal vanadium ore pretreatment device according to one embodiment of the present utility model.

[0026] The numbers in the figure are:

[0027] 1- Broken components;

[0028] 11-first housing, 12-annular seat, 13-support wheel, 14-partition plate, 15-first guide plate, 16-static jaw plate, 17-second guide plate, 18-moving jaw plate, 19-eccentric shaft;

[0029] 110-first motor, 111-threaded rod, 112-knob, 113-breaking nail;

[0030] 2-first screening assembly;

[0031] 21- bracket, 22- feed pipe, 23- funnel, 24- second motor, 25- first connecting shaft, 26- first spiral blade, 27- connecting rod, 28- first screen drum, 29- first lifting plate;

[0032] 210-first retaining ring, 211-second screen drum, 212-second copying plate, 213-second retaining ring, 214-sleeve, 215-third copying plate, 216-third retaining ring, 217-connecting plate;

[0033] 3- second screening assembly;

[0034] 31-second housing, 32-third motor, 33-second connecting shaft, 34-second spiral blade, 35-screen, 36-discharge port, 37-support foot, 38-screen plate, 39-limiting screw;

[0035] 310-spring. DETAILED DESCRIPTION

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0037] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0038] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0039] refer to Figures 1 to 8 As shown, a stone coal vanadium ore pretreatment device according to an embodiment of the present invention includes a crushing assembly 1, a first screening assembly 2, and a second screening assembly 3, wherein the discharge port of the first screening assembly 2 is connected to the feed port of the crushing assembly 1, and the feed port of the second screening assembly 3 is connected to the discharge port of the crushing assembly 1. The crushing assembly 1 includes a first housing 11, in which a guide plate is fixedly connected, and the guide plate includes a first guide plate 15 and a second guide plate 17. The first guide plate 15 is fixedly connected to a static jaw plate 16, and a movable jaw plate 18 is provided on one side of the static jaw plate 16. A second guide plate 17 is provided at the top of the movable jaw plate 18, and the second guide plate 17 is fixedly connected to the first housing 11. The first screening assembly 2 is used to classify raw ore (such as stone coal vanadium ore), the crushing assembly 1 is used to crush the raw ore, and the second screening assembly 3 is used to screen the crushed ore. The first guide plate 15 and the second guide plate 17 are used to guide the ore into the crushing space.

[0040] A first motor 110 is provided on one side of the first housing 11. The output end of the first motor 110 is transmission-connected to the eccentric shaft 19, and the eccentric shaft 19 is rotationally connected to the first housing 11. The movable jaw plate 18 is installed on the eccentric shaft 19. The first motor 110 is used to drive the eccentric shaft 19, and the eccentric shaft 19 can drive the movable jaw plate 18.

[0041] Multiple threaded rods 111 can also be threadedly connected to the static jaw plate 16 and the movable jaw plate 18. The threaded rods 111 are fixedly connected to knobs 112, and the knobs 112 are fixedly connected to crushing pins 113. The threaded rods 111 are used to install the crushing pins 113 on the movable jaw plate 18 and the static jaw plate 16. The knobs 112 are used to turn the threaded rods 111, and the crushing pins 113 are used to provide greater crushing pressure. The movable jaw plate 18 is used to cooperate with the static jaw plate 16 to squeeze and crush the ore.

[0042] The first screening assembly 2 includes a bracket 21, a feed pipe 22, a hopper 23, a second motor 24, a first connecting shaft 25, a first spiral blade 26, a connecting rod 27, a first screen drum 28, a first lift plate 29, a first retaining ring 210, a second screen drum 211, a second lift plate 212, a second retaining ring 213, a sleeve 214 (or a third screen drum), a third lift plate 215, a third retaining ring 216, and a connecting plate 217. The bracket 21 is positioned on one side of the first housing 11. The feed pipe 22 is fixedly connected to the bracket 21. The feed pipe 22 is connected to the hopper 23. The feed pipe 22 is fixedly connected to the second motor 24. The output end of the second motor 24 is fixedly connected to the first connecting shaft 25, which is rotatably connected to the first housing 11. The first spiral blade 26 is fixedly connected to the first connecting shaft 25. The first spiral blade 26 is sleeved within the feed pipe 22. The first connecting shaft 25 is fixedly connected to the first screen drum 28 via a connecting rod 27. The first sieve drum 28 is fixedly connected to a connecting plate 217 , the connecting plate 217 is fixedly connected to the second sieve drum 211 , the second sieve drum 211 is sleeved on the first sieve drum 28 , the second sieve drum 211 is sleeved with a sleeve 214 , and the sleeve 214 is fixedly connected to the connecting plate 217 .

[0043] When the utility model is used to crush stone coal ore, the ore is first placed in the funnel 23, and then the second motor 24 is started, and the addition of ore is stopped. The second motor 24 drives the first spiral blade 26 through the first connecting shaft 25, and the first spiral blade 26 conveys the ore to the first screen drum 28 through the feeding pipe 22. At the same time, the first connecting shaft 25 drives the first screen drum 28 through the connecting rod 27, and the first screen drum 28 drives the second screen drum 211 and the sleeve 214 through the connecting plate 217. The first screen drum 28 filters out large particles of ore, and the remaining ore passes through the sieve holes of the first screen drum 28. The ore enters the second sieve drum 211, which filters out medium-sized particles of raw ore. The remaining raw ore enters the sleeve 214 through the sieve holes of the second sieve drum 211, that is, small-sized particles of raw ore fall into the sleeve 214. Then, the second motor 24 is rotated in the opposite direction, so that the first sieve drum 28, the second sieve drum 211 and the sleeve 214 are reversed. Under the pushing action of the first shovel 29, the second shovel 212 and the third shovel 215, the raw ores of large, medium and small particles respectively enter the three crushing chambers separated by the partition 14, and each crushing chamber crushes the raw ores of large, medium and small particles respectively.

[0044] In this embodiment, the first housing 11 can be fixedly connected to an annular seat 12, and a plurality of support wheels 13 are evenly distributed in the annular seat 12. The support wheels 13 are rollingly connected to the sleeve 214. The support wheels 13 are used to support the sleeve 214 to assist the sleeve 214 in rotating.

[0045] One end of the first screen drum 28 is fixedly connected to a first retaining ring 210, one end of the second screen drum 211 is fixedly connected to a second retaining ring 213, and one end of the sleeve 214 is fixedly connected to a third retaining ring 216. The first retaining ring 210, the second retaining ring 213, and the third retaining ring 216 are all sleeved within the first housing 11. The third retaining ring 216 is disposed on one side of the annular seat 12. The first retaining ring 210 and the second retaining ring 213 are used to separate the raw ore. The third retaining ring 216 is also used to cooperate with the annular seat 12 to limit the position of the sleeve 214. A partition 14 is provided on one side of the first retaining ring 210, the second retaining ring 213, and the third retaining ring 216. All three partitions 14 are fixedly connected to the static jaw plate 16. The partitions 14 are used to divide the crushing chamber and separate the outlets of each screen drum (including the first screen drum 28, the second screen drum 211, and the sleeve 214). A plurality of first scooping plates 29 are evenly distributed in the first screen drum 28, a plurality of second scooping plates 212 are evenly distributed in the second screen drum 211, and a plurality of third scooping plates 215 are evenly distributed in the sleeve 214. The first scooping plates 29, the second scooping plates 212 and the third scooping plates 215 are used for pushing materials.

[0046] The second screening assembly 3 may include a second housing 31, a third motor 32, a second connecting shaft 33, a second spiral blade 34, a screen 35, a discharge port 36, a support foot 37, a screen plate 38, a limit screw 39 and a spring 310 (elastic component). Among them, the second housing 31 is conductively fixed to the lower surface of the first housing 11, the lower surface of the second housing 31 is fixedly connected to the third motor 32, the output end of the third motor 32 is fixedly connected to the second connecting shaft 33, the second connecting shaft 33 is rotatably connected to the second housing 31, and two screens 35 and three second spiral blades 34 are installed on the second connecting shaft 33. The screen 35 and the second spiral blade 34 are arranged at intervals. The spring 310 is used to provide a reset elastic force for the screen plate 38 so that it can fit the static jaw plate 16 when the movable jaw plate 18 moves.

[0047] A discharge port 36 is provided on the second housing 31 at a position corresponding to the second spiral blade 34. Four support feet 37 are provided on the outside of the third motor 32 and are fixedly connected to the bottom surface of the second housing 31. A screen plate 38 is mounted on the bottom end of the static jaw plate 16. A limit screw 39 is mounted on the screen plate 38, which is threadedly connected to the movable jaw plate 18. A spring 310 is mounted on the limit screw 39. One end of the spring 310 is mounted on the bottom end of the screen plate 38, and the other end is mounted on the nut of the limit screw 39. The screen 35 is mounted on the second connecting shaft 33, to which the second spiral blade 34 is fixedly connected.

[0048] Exemplarily, the screen plate 38 is used to intercept ore with a particle size greater than 200 mm. The limit screw 39 is used to install the screen plate 38. The spring 310 is used to provide a return force for the screen plate 38, allowing it to contact the static jaw plate 16 when the movable jaw plate 18 moves. The third motor 32 drives the second spiral blade 34 via the second connecting shaft 33. The second spiral blade 34 pushes and disperses the ore accumulated in the center. In the above process, ore with a particle size greater than 50 mm and less than 200 mm is intercepted by the first layer of screen 35, while ore with a particle size greater than 10 mm and less than 50 mm is intercepted by the second layer of screen 35. Ore with a particle size less than 10 mm falls to the bottom of the second housing 31. The three rotating second spiral blades 34 discharge the screened ore from the corresponding discharge port 36, thus completing the screening.

[0049] Based on the structure of the device shown in this embodiment, the bracket 21 is used to support the feed pipe 22, the first retaining ring 210 and the second retaining ring 213 are used to separate the ore, and the third retaining ring 216 is used to cooperate with the annular seat 12 to limit the sleeve 214. The first motor 110 of the crushing assembly 1 uses a transmission device to drive the eccentric shaft 19, which drives the movable jaw plate 18 to perform a squeezing action. The crushing pins 113 on the movable jaw plate 18 and the static jaw plate 16 cooperate with each other to crush the raw ore into small particles. Ore with a particle size greater than 200 mm is intercepted by the screen plate 38 and continues to be crushed, while ore with a particle size less than 200 mm falls into the second housing 31. At this point, the third motor 32 drives the second spiral blades 34 via the second connecting shaft 33. The second spiral blades 34 push and disperse the ore accumulated in the center. During this process, ore with a particle size greater than 50 mm and less than 200 mm is intercepted by the first layer of screen 35, while ore with a particle size greater than 10 mm and less than 50 mm is intercepted by the second layer of screen 35. Ore with a particle size less than 10 mm falls to the bottom of the second housing 31. The rotating three second spiral blades 34 discharge the screened ore from the corresponding discharge port 36. The discharge port 36 is connected to a material box to obtain the crushed and screened ore for subsequent X-ray sorting.

[0050] Crushed stone coal vanadium ore is sorted by an XRT ray intelligent concentrator, which consists of a control unit, a conveyor unit, a detection unit, and an execution unit electrically connected to the control unit. Crushed ore enters the conveyor unit through a feeding device. The conveyor unit then passes the crushed ore through the detection unit, which includes an X-ray detector. The X-ray detector acquires ore characteristic data and transmits it to the control unit. The control unit compares this data with the set ore characteristic data and waste rock characteristic data to comprehensively determine whether the detected ore is ore or waste rock. The control unit then controls the execution unit to separate the ore from the waste rock. The appropriate particle size gradation of the crushed ore further improves identification accuracy. The pre-selected waste rock has a high silicon content and high hardness, and can be sold as construction aggregate.

[0051] The present invention's stone coal vanadium ore pretreatment device performs preliminary screening of the raw ore through the first screening component 2, and uses the crushing component 1 to achieve graded crushing of the raw ore, thereby preventing small ores from being over-crushed due to being squeezed by large ores, thereby reducing the ore with a particle size below 10 mm after crushing and increasing the feed capacity of the X-ray sorter. The second screening component 3 uses the second spiral blade 34 to evenly disperse the crushed ore on the screen 35, and pushes the screened ore to the discharge port 36, which has the advantages of low noise and low dust compared to the existing vibrating screen. The crushing component 1 is additionally provided with a crushing nail 113, which can provide greater crushing pressure, thereby reducing the energy consumption of the equipment, and the worn crushing nail 113 can be replaced individually, which can reduce maintenance costs.

[0052] The basic concepts have been described above. It will be apparent to those skilled in the art that the above utility model disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0053] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0054] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A stone coal vanadium ore pretreatment device, characterized in that: The crushing assembly comprises a crushing assembly, a first screening assembly and a second screening assembly, wherein the discharge port of the first screening assembly is connected to the feed port of the crushing assembly, and the feed port of the second screening assembly is connected to the discharge port of the crushing assembly; The feed inlet of the crushing assembly includes a material guide plate, and a static jaw plate and a movable jaw plate matching the static jaw plate are arranged below the material guide plate; The first screening assembly includes a feed portion and a screening portion, wherein the outlet of the feed portion is connected to the inlet of the screening portion; the screening portion includes a plurality of screen cylinders, wherein the outer screen cylinder is sleeved on the inner screen cylinder, and a partition is provided at the outlet of the screening portion, wherein the partition is configured to separate the outlets of the plurality of screen cylinders; The second screening assembly includes a plurality of screens, which are arranged in sequence in a vertical direction, and the screen holes of the screens located at the top are larger than the screen holes of the screens located at the bottom.

2. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: The material guide plate includes a first material guide plate and a second material guide plate. The static jaw plate is arranged below the first material guide plate, and the movable jaw plate is arranged below the second material guide plate.

3. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: The crushing assembly further comprises a first motor, the output end of which is transmission-connected to an eccentric shaft, on which the movable jaw plate is arranged.

4. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: The static jaw plate and / or the movable jaw plate are provided with a plurality of breaking pins.

5. The stone coal vanadium ore pretreatment device according to claim 4, characterized in that: A plurality of threaded rods are connected to the static jaw plate and / or the movable jaw plate, each of the threaded rods is fixed with a knob, and the breaker pin is fixed to the knob.

6. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: The feeding part includes a funnel, a feeding pipe is arranged below the funnel, and a first spiral blade is arranged in the feeding pipe. The first spiral blade is connected to the second motor through a first connecting shaft.

7. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: A lifting plate is fixed on the inner wall of each screen cylinder.

8. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: A support wheel is fixed on the outermost screen drum; the support wheel is arranged on an annular seat and is configured to rotate along the annular seat.

9. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: The second screening assembly further includes a third motor connected to a second connecting shaft, the second connecting shaft is provided with a second spiral blade, and the second spiral blade is configured to cooperate with the screen to screen material.

10. The stone coal vanadium ore pretreatment device according to claim 1, characterized in that: It also includes a screen plate, which is arranged below the crushing assembly and is connected to the second screening assembly through a limiting screw, and an elastic component is sleeved on the limiting screw.

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