Ore sorting pre-treatment apparatus and slurry conditioning method

Abstract

The application relates to an oxidized ore sorting pretreatment device and a slurry adjusting method, and belongs to the technical field of oxidized ore pretreatment, which comprises a mounting plate, a crushing mechanism arranged on the mounting plate, a vortex classification mechanism arranged on the crushing mechanism, an auxiliary feeding mechanism arranged on the mounting plate, an opening and closing mechanism arranged on the mounting plate and a slurry adjusting mechanism mounted on the mounting plate; the crushing mechanism comprises a bottom plate, and the top surface of the mounting plate is fixedly connected with the bottom plate. The application has the advantages that a crushing circulation process of crushing, classification, reflux and re-crushing is formed in the crushing cavity, the material can be crushed for multiple times under the same time, the material can be gradually classified and discharged to the slurry adjusting process, the crushing space is reasonably distributed, the material can participate in the crushing process of the hammer head and the gear ring more, the crushing quality and the crushing precision are improved, the contact surface of the oxidized ore and the reagent is improved, and the pretreatment quality of the oxidized ore is improved.

Description

Technical Field

[0001] This invention relates to the field of oxide ore pretreatment technology, specifically to an oxide ore sorting and pretreatment device and a slurry preparation method. Background Technology

[0002] Oxidized minerals (such as oxidized copper ore, oxidized lead-zinc ore, iron ore, tungsten ore, etc.) have strong hydrophilicity and hydration film on their surface, making it difficult for collectors to effectively adsorb them during conventional flotation processes, resulting in low separation efficiency and high reagent consumption.

[0003] Existing pretreatment technologies mainly include sulfidation, adding reagents after sulfidation, or adding combined modifiers. However, due to the large size of the oxidized ore raw materials and the small surface area in contact with the reagents, these methods have problems such as long reaction time and uneven reagent distribution. Consequently, the subsequent slurry preparation requires a long time and many steps, which makes the subsequent processing of oxidized minerals time-consuming, labor-intensive, and slow. Taking oxidized gold ore as an example, native gold is often encased in iron oxide, clay or manganese, with fine embedded particles that are easily muddied. Traditional beneficiation methods often suffer from problems such as low recovery rate and complex process. In the pretreatment stage, high mud content and uneven particle size of the ore are the core pain points that urgently need to be solved.

[0004] To address the aforementioned issues, we propose an oxidized ore separation pretreatment device and a slurry preparation method. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an oxidized ore separation pretreatment device and a slurry preparation method, solving the problems associated with an oxidized ore separation pretreatment device and a slurry preparation method.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an oxidized ore sorting and pretreatment device and a slurry preparation method, comprising an installation plate, a crushing mechanism provided on the installation plate, an eddy current classification mechanism provided on the crushing mechanism, an auxiliary feeding mechanism provided on the installation plate, an opening and closing mechanism provided on the installation plate, and a slurry preparation mechanism installed on the installation plate; The crushing mechanism includes a base plate, the top surface of the mounting plate is fixedly connected to the base plate, a main bearing seat is fastened to the base plate by fastening bolts, a rotating shaft is rotatably mounted in the main bearing seat through a bearing, a driven wheel is fixedly mounted on the side of the rotating shaft, a drive motor is mounted on the mounting plate, a motor wheel is fixedly mounted on the side of the drive motor transmission rod, and a V-belt is sleeved on the side of the motor wheel and the driven wheel; A crushing disc is provided on the side of the rotating shaft. A mounting block is installed on the top surface of the crushing disc by bolts. A hammer head is fastened to the side of the mounting block by bolts. A crushing disc liner is fixedly installed on the crushing disc. A crushing chamber is installed on the bottom plate. A toothed ring is fixedly installed on the inner wall of the crushing chamber.

[0007] The eddy current classification mechanism includes an arc-shaped cover, the outer edge of which is fastened to the crushing chamber by fastening bolts. A discharge chamber is installed on the arc-shaped cover by fastening bolts. A protective shell is installed on the discharge chamber. A classification frequency conversion motor is installed on the top surface of the protective shell. A discharge port is opened on the side of the discharge chamber.

[0008] Furthermore, a coupling is provided on the end face of the transmission rod of the graded variable frequency motor, and a graded bearing seat is installed on the coupling. A graded wheel is installed on the bottom surface of the graded bearing seat through a connecting shaft. The upper edge of the graded wheel is adapted to the edge of the arc-shaped cover to prevent polarization when the graded wheel rotates.

[0009] Furthermore, the inner wall of the grinding chamber is provided with several fixing rods, which are divided into four groups and arranged around the grinding chamber. A flow divider is fixedly installed on the other end face of the fixing rod. The flow divider is arranged above the grinding disc and has a gap with the grinding disc. The upper part of the flow divider, together with the arc-shaped cover and the grinding chamber, forms a return channel from the bottom and edge of the grinding disc to the classifying wheel.

[0010] Furthermore, a through hole is fixedly opened on the side of the crushing chamber, and an air inlet is fixedly installed on the inner wall of the through hole. A filter grid is snapped onto the bottom surface of the air inlet. The air inlet passes through the mounting plate and extends to the bottom of the mounting plate. The filter grid serves as the main filter component and is snapped onto the air inlet, thereby improving the speed of disassembly and replacement.

[0011] Furthermore, the auxiliary feeding mechanism includes a jaw crusher, which is fixedly connected to the top surface of the mounting plate. A storage bin is installed below the jaw crusher, and a through hole is opened on the storage bin. A discharge cylinder is fixedly installed on the inner wall of the through hole. A servo motor is installed on the discharge cylinder, and a rotating rod is fixedly installed on the end face of the servo motor's transmission rod. A rotating blade is installed on the rotating rod, and a fixing component is rotatably installed on the side of the rotating rod through a bearing. The side of the fixing component is fixedly connected to the discharge cylinder. A through hole is opened on the side of the discharge cylinder, and a feed pipe is fixedly installed in the through hole. The bottom of the discharge cylinder extends into the interior of the storage bin, and a feed inlet is fixedly opened on the bottom side of the discharge cylinder. The end face of the feed pipe is connected to the through hole opened on the crushing chamber through a flange.

[0012] Furthermore, the opening and closing mechanism includes a mounting frame, the bottom surface of which is fixedly connected to a mounting plate. A connecting rod is provided on the mounting frame, and a bushing is sleeved on the side of the connecting rod through a bearing. A connecting frame is fixedly installed on the side of the bushing, and the connecting frame is fixedly connected to the side of the arc-shaped cover. A pull rod is fixedly installed on the side of the bushing, and a hinge is fixedly installed on one end of the pull rod. A cylinder is installed on the other end of the hinge, and a hinge is provided at the bottom of the cylinder. The other end of the hinge is fixedly connected to the top surface of the mounting plate.

[0013] Furthermore, the slurry preparation mechanism includes a tank body, a transmission pipe fixedly installed on the side of the tank body, the transmission pipe being fastened to the discharge port by bolts, a first dosing port fixedly provided on the tank body, a second dosing port fixedly provided on the tank body, a feed cover plate slidably installed on the second dosing port, the feed cover plate being snapped into the second dosing port, a water injection port fixedly provided on the tank body, a communicating vessel fixedly provided on the side of the tank body, and a discharge port fixedly provided on the bottom side of the tank body.

[0014] Furthermore, an outer frame is mounted on the side of the mounting plate via fixing ears, a support leg is fixedly mounted under the outer frame, a protective shell is snapped onto the bottom surface of the mounting plate, and heat dissipation holes are fixedly opened on the side of the protective shell.

[0015] Based on the above-described oxide ore separation pretreatment device, the present invention also proposes an oxide ore separation pretreatment slurry preparation method, comprising the following steps: Step 1: First, ensure that the oxide ore has been pretreated to the required particle size before being transferred to the tank. Step 2: Add an appropriate amount of water into the tank through the water inlet, and then add pH adjuster into the tank through the first chemical dosing port to adjust the acidity and alkalinity of the slurry, creating an environment and inhibiting the subsequent reaction. Step 3: Add inhibitors to the tank to suppress gangue minerals and reduce their interference with the flotation of valuable metals; Step 4: Add the collector into the tank through the second dosing port to make the surface of the useful minerals hydrophobic and easy to float, while promoting the hydrophobic agglomeration of fine particles. After waiting for the reaction time, the separation is enhanced, which improves the grade of the concentrate and ensures the recovery rate.

[0016] Compared with the prior art, the present invention provides an oxidized ore separation pretreatment device and a slurry preparation method, which have the following beneficial effects: 1. During the crushing process, the device forms a crushing, grading, recirculation, and re-crushing cycle within the crushing chamber. This allows for multiple crushings of materials in the same amount of time, and enables gradual grading and discharge of materials to the slurry preparation process. This achieves a reasonable allocation of the crushing space, allowing more materials to participate in the crushing process of the hammer and toothed ring, thereby improving the crushing quality and precision, increasing the contact area between the oxide minerals and the reagents, and ultimately improving the pretreatment quality of the oxide minerals.

[0017] 2. The device generates eddies through the rotation of the crushing disc and classifying wheel, which can carry away the heat generated by the high-speed rotation inside the equipment, keeping the device at a low temperature at all times. It can also prevent the high-speed rotating crushing parts from violently rubbing against the materials, generating a lot of heat, and prevent the materials from sticking together.

[0018] 3. The device has an opening and closing mechanism that allows the upper part of the device to be opened, so as to inspect and maintain the inside of the crushing chamber, and to replace the hammer and toothed ring. This improves the convenience of inspection and maintenance of the device and thus extends its service life.

[0019] 4. The device is equipped with an independent fully automatic auxiliary feeding mechanism. Before feeding, large pieces of oxide minerals are first crushed to facilitate subsequent fine crushing operations, thereby improving the pretreatment of oxide minerals. The device is also convenient and quick to feed, and can use the vortex generated inside the crushing chamber to suck the material into the crushing chamber. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of the present invention; Figure 2 This is a three-dimensional view of the slurry preparation mechanism of the present invention; Figure 3 This is a schematic diagram of the jaw crusher structure of the present invention; Figure 4 This is a three-dimensional view of the servo motor structure of the present invention; Figure 5 This is a perspective view of the rotating blade structure of the present invention; Figure 6 This is a perspective view of the flow divider structure of the present invention; Figure 7 This is a perspective view of the drive motor structure of the present invention; Figure 8 This is a perspective view of the pulverizing disc structure of the present invention; Figure 9 This is a perspective view of the cylinder structure of the present invention; Figure 10 This is a three-dimensional view of the graded variable frequency motor structure of the present invention; Figure 11 This is a perspective view of the graded wheel structure of the present invention; Figure 12 This is a perspective view of the tank structure of the present invention; Figure 13 This is a perspective view of the protective shell structure of the present invention; Figure 14 This is a flowchart of the process of the present invention.

[0021] In the diagram: 1. Mounting plate; 2. Outer frame; 3. Support legs; 4. Crushing mechanism; 401. Drive motor; 402. Motor wheel; 403. V-belt; 404. Main bearing housing; 405. Rotating shaft; 406. Driven wheel; 407. Base plate; 408. Crushing chamber; 409. Gear ring; 410. Crushing disc; 411. Mounting block; 412. Hammer; 413. Crushing disc liner; 5. Vortex classifier; 501. Arc-shaped cover; 502. Discharge chamber; 503. Discharge port; 504. Protective shell; 505. Classifier frequency conversion motor; 506. Coupling; 507. Classifier bearing seat; 508. Classifier wheel; 509. Air inlet; 510. Filter grid; 511. Fixing rod; 512. Diverter; 6. Auxiliary feeding mechanism; 601. Jaw crusher; 602. Storage bin; 603. Discharge cylinder; 604. Servo motor; 605. Fixing component; 606. Rotating rod; 607. Rotating blade; 608. Feed pipe; 609. Feed inlet; 7. Opening and closing mechanism; 701. Mounting bracket; 702. Bushing; 703. Connecting bracket; 704. Tie rod; 705. Cylinder; 8. Protective casing; 9. Ventilation holes; 10. Slurry preparation mechanism; 1001. Tank body; 1002. First chemical dosing port; 1003. Water injection port; 1004. Second feed port; 1005. Transmission pipe; 1006. Discharge port; 1007. Communicating device. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 14 The oxidized ore sorting and pretreatment device and slurry preparation method in this embodiment include an installation plate 1, a crushing mechanism 4 is provided on the installation plate 1, an eddy current classification mechanism 5 is provided on the crushing mechanism 4, an auxiliary feeding mechanism 6 is provided on the installation plate 1, an opening and closing mechanism 7 is provided on the installation plate 1, and a slurry preparation mechanism 10 is installed on the installation plate 1. The crushing mechanism 4 includes a base plate 407. The top surface of the mounting plate 1 is fixedly connected to the base plate 407. A main bearing seat 404 is fastened to the base plate 407 by fastening bolts. A rotating shaft 405 is rotatably mounted in the main bearing seat 404 through a bearing. A driven wheel 406 is fixedly mounted on the side of the rotating shaft 405. A drive motor 401 is mounted on the mounting plate 1. A motor wheel 402 is fixedly mounted on the side of the transmission rod of the drive motor 401. The motor wheel 402 and the driven wheel 406 are set on the same horizontal plane. A V-belt 403 is sleeved on the side of the motor wheel 402 and the driven wheel 406. A crushing disc 410 is provided on the side of the rotating shaft 405. The crushing disc 410 is composed of multiple fan-shaped discs spliced ​​and fixed together. An installation block 411 is installed on the top surface of the crushing disc 410 by bolts. A hammer 412 is fastened to the side of the installation block 411 by bolts. A crushing disc liner 413 is fixedly installed on the crushing disc 410. A crushing chamber 408 is installed on the bottom plate 407. A toothed ring 409 is fixedly installed on the inner wall of the crushing chamber 408. The installation block 411, hammer 412 and toothed ring 409 are the main components involved in the crushing process and have a large amount of wear. Therefore, all three can be disassembled and replaced. The eddy current classification mechanism 5 includes an arc-shaped cover 501. The arc-shaped cover 501 has its own curvature, which enables the flow of eddies within the crushing chamber 408, improving the working efficiency of the classification component. The outer edge of the arc-shaped cover 501 is fastened to the crushing chamber 408 by fastening bolts. A discharge chamber 502 is installed on the arc-shaped cover 501 by fastening bolts. A protective shell 504 is installed on the discharge chamber 502. A classification frequency conversion motor 505 is installed on the top surface of the protective shell 504. A discharge outlet is opened on the side of the discharge chamber 502. A coupling 506 is provided on the end face of the transmission rod of the graded variable frequency motor 505. A graded bearing seat 507 is installed on the coupling 506. The coupling 506 serves to connect the graded bearing seat 507 and the graded variable frequency motor 505, and can also perform speed compensation and buffer protection. A graded wheel 508 is installed on the bottom surface of the graded bearing seat 507 through a connecting shaft. The upper edge of the graded wheel 508 is adapted to the edge of the arc-shaped cover 501 to prevent polarization when the graded wheel 508 rotates. The inner wall of the crushing chamber 408 is provided with several fixing rods 511, which are divided into four groups and arranged around the crushing chamber 408. A flow divider 512 is fixedly installed on the other end face of each fixing rod 511. The flow divider 512 is positioned above the crushing disc 410 and has a gap with it. The flow divider 512 serves to separate space, guide flow, and limit movement, preventing interference between the material and the fine particles rising with the vortex, thereby improving crushing efficiency and quality. The upper part of 512, together with the arc-shaped cover 501 and the crushing chamber 408, forms a return channel from the bottom and edge of the crushing disc 410 to the classifying wheel 508. A through hole is fixedly opened on the side of the crushing chamber 408. An air inlet 509 is fixedly installed on the inner wall of the through hole. A filter grid 510 is snapped onto the bottom surface of the air inlet 509. The air inlet 509 passes through the mounting plate 1 and extends to the bottom of the mounting plate 1. The filter grid 510, as the main filter component, is snapped onto the air inlet 509 to improve the speed of disassembly and replacement. The auxiliary feeding mechanism 6 includes a jaw crusher 601, which is fixedly connected to the top surface of the mounting plate 1. A storage bin 602 is installed below the jaw crusher 601. The jaw crusher 601 can perform preliminary crushing of large pieces of oxidized minerals, which is helpful for subsequent fine crushing operations. The storage bin 602 has a through hole, and a discharge cylinder 603 is fixedly installed on the inner wall of the through hole. A servo motor 604 is installed on the discharge cylinder 603. A rotating rod 606 is fixedly installed on the end face of the transmission rod of the servo motor 604. A rotating blade 607 is installed on the rotating rod 606. The rotating rod 606 has a fixing part 605 rotatably mounted on its side via a bearing. The fixing part 605 is fixedly connected to the discharge cylinder 603. The discharge cylinder 603 has a through hole on its side, and a feed pipe 608 is fixedly installed in the through hole. The bottom of the discharge cylinder 603 extends into the storage bin 602. A feed inlet 609 is fixedly opened on the bottom side of the discharge cylinder 603. The end face of the feed pipe 608 is connected to the through hole on the crushing chamber 408 via a flange. Relatively small pieces of oxide minerals can be fed into the crushing chamber 408 for crushing through the discharge cylinder 603 and the feed inlet 609. The opening and closing mechanism 7 includes a mounting frame 701, the bottom surface of which is fixedly connected to the mounting plate 1. A connecting rod is provided on the mounting frame 701, and a bushing 702 is sleeved on the side of the connecting rod via a bearing. A connecting frame 703 is fixedly installed on the side of the bushing 702, and the connecting frame 703 is fixedly connected to the side of the arc-shaped cover 501. A pull rod 704 is fixedly installed on the side of the bushing 702, and a hinge is fixedly installed on one end of the pull rod 704. A cylinder 705 is installed on the other end of the hinge, and a hinge is provided at the bottom of the cylinder 705. The hinge component is designed to adapt to the displacement and deflection caused by the contraction or extension of the cylinder 705 when the cylinder 705 is started, ensuring the smooth completion of the opening and closing process. The other end of the hinge component is fixedly connected to the top surface of the mounting plate 1. The side of the mounting plate 1 is fitted with an outer frame 2 through a fixing lug. The support leg 3 is fixedly installed under the outer frame 2. The bottom surface of the mounting plate 1 is snapped with a protective shell 8. The side of the protective shell 8 is fixedly provided with heat dissipation holes 9. The protective shell 8 and the heat dissipation holes 9 serve to protect the drive components and generate heat, thereby improving the service life of the equipment. In this embodiment, a method for pretreatment and slurry preparation for oxide ore separation includes the following steps: Step 1: First, ensure that the oxide ore has been pretreated to the required particle size, and then transfer it into tank 1001; Step 2: Add an appropriate amount of water into tank 1001 through water inlet 1003, and then add pH adjuster into tank 1001 through first chemical dosing inlet 1002 to adjust the acidity and alkalinity of the slurry, creating an environment and inhibiting the subsequent reaction. Step 3: Add inhibitors to tank 1001 to suppress gangue minerals and reduce their interference with the flotation of valuable metals; Step 4: Add the collector into the tank 1001 through the second dosing port 1004 to make the surface of the useful minerals hydrophobic and easy to float, while promoting the hydrophobic agglomeration of fine particles. After waiting for the reaction time, the separation is enhanced, which improves the grade of the concentrate and ensures the recovery rate.

[0024] The working principle of the above embodiments is as follows: First, the oxidized mineral blocks to be crushed are placed in the jaw crusher 601. After crushing, the small pieces of oxidized mineral fall into the storage bin 602 and then enter the bottom of the discharge cylinder 603 through the feed inlet 609. At this time, the servo motor 604 is turned on, which drives the rotating rod 606 and the rotating blade 607 to rotate, lifting the small pieces of oxidized mineral upward into the feed pipe 608, and then conveying them into the crushing chamber 408 to complete the automatic feeding operation. After feeding, the material enters the crushing chamber 408 through the feed pipe 608 and then falls onto the crushing disc 410. At the same time, the drive motor 401 is turned on to drive the motor wheel 402 to rotate, which in turn drives the V-belt 403 sleeved on the side of the motor wheel 402. The V-belt 403 drives the driven wheel 406 and the rotating shaft 405 to rotate, which in turn drives the crushing disc 410 and the hammer 412 to rotate at high speed, thereby forming a vortex. When the material falls into the crushing chamber 408, it is impacted, sheared, and rubbed by the high-speed rotating hammer 412 and the toothed ring 409. And under the action of high frequency pressure vibration, during crushing, smaller particles are spiraled upward into the classifier wheel 508 through the gap between the diverter 512 and the inner wall of the crushing chamber 408 under the action of eddy current. Under the action of centrifugal force of the classifier wheel 508, the fine particles that meet the crushing standard are carried into the discharge chamber 502 with the rising airflow, and then discharged through the discharge port 503. Larger particles, due to insufficient gravity, fall back into the crushing chamber 408 and then come into contact with the hammer 412 through the gap for repeated crushing and grinding until they meet the standard and are discharged with the airflow. During crushing, the target crushing mesh size can be adjusted by adjusting the speed of the grading variable frequency motor 505 and thus the speed of the grading wheel 508. After adjusting the target mesh size, the grading variable frequency motor 505 is turned on, driving the grading wheel 508 to rotate. In conjunction with the crushing mechanism 4, the crushed material particles are graded by passing them through the grading wheel 508. When the grading wheel 508 rotates at high speed, the sliding groove set on the edge of the arc-shaped cover 501 contacts the upper edge of the grading wheel 508, which plays a limiting and guiding role, preventing polarization when the grading wheel 508 rotates at high speed and improving the service life of the device. After prolonged use, the hammer 412 is severely worn and needs to be replaced. First, remove the fastening bolts that connect the arc-shaped cover 501 and the crushing chamber 408. Then, open the cylinder 705. The cylinder 705 retracts and pulls the pull rod 704 and bushing 702 through the hinge to deflect around the upper end of the mounting frame 701. At this time, the bushing 702 drives the connecting frame 703 and the five parts of the eddy current classification mechanism to deflect, which can then be inserted into the crushing chamber 408 to replace the hammer 412 or to inspect and maintain the inside of the equipment. After crushing, the oxidized mineral powder enters the tank 1001 through the transfer pipe 1005. At this time, an appropriate amount of water is added into the tank 1001 through the water inlet 1003, and then a pH adjuster is added into the tank 1001 through the first chemical dosing port 1002 to adjust the acidity and alkalinity of the slurry, creating an environment and inhibitor for subsequent reactions. Then, an inhibitor is added into the tank 1001 to suppress gangue minerals and reduce their interference with the flotation of valuable metals. A collector is added into the tank 1001 through the second chemical dosing port 1004 to make the surface of the valuable minerals hydrophobic and easy to float, while promoting the hydrophobic agglomeration of fine particles. After waiting for the reaction time, the separation is enhanced, and the liquid level inside the tank 1001 can be observed through the communicating vessel 1007. At this time, the slurry conditioning operation of the oxidized minerals is completed, and then the valve is opened to discharge the slurry through the discharge port 1006.

[0025] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

Claims

1. An oxide ore sorting and pretreatment device, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a crushing mechanism (4), the crushing mechanism (4) is provided with a vortex grading mechanism (5), the mounting plate (1) is provided with an auxiliary feeding mechanism (6), the mounting plate (1) is provided with an opening and closing mechanism (7), and the mounting plate (1) is provided with a slurry adjusting mechanism (10). The crushing mechanism (4) includes a base plate (407), the top surface of the mounting plate (1) is fixedly connected to the base plate (407), a main bearing seat (404) is fastened on the base plate (407) by fastening bolts, a rotating shaft (405) is rotatably mounted in the main bearing seat (404) by bearings, a driven wheel (406) is fixedly mounted on the side of the rotating shaft (405), a drive motor (401) is mounted on the mounting plate (1), a motor wheel (402) is fixedly mounted on the side of the drive motor (401) transmission rod, and a V-belt (403) is sleeved on the side of the motor wheel (402) and the driven wheel (406). A crushing disc (410) is provided on the side of the rotating shaft (405). A mounting block (411) is installed on the top surface of the crushing disc (410) by bolts. A hammer (412) is fastened on the side of the mounting block (411) by bolts. A crushing disc liner (413) is fixedly installed on the crushing disc (410). A crushing chamber (408) is installed on the bottom plate (407). A gear ring (409) is fixedly installed on the inner wall of the crushing chamber (408).

2. The oxide ore sorting and pretreatment device according to claim 1, characterized in that: The eddy current classification mechanism (5) includes an arc-shaped cover (501). The outer edge of the arc-shaped cover (501) is fastened to the crushing chamber (408) by fastening bolts. A discharge chamber (502) is installed on the arc-shaped cover (501) by fastening bolts. A protective shell (504) is installed on the discharge chamber (502). A classification frequency conversion motor (505) is installed on the top surface of the protective shell (504). A discharge port (503) is opened on the side of the discharge chamber (502).

3. The oxide ore sorting and pretreatment device according to claim 2, characterized in that: The transmission rod end face of the graded variable frequency motor (505) is provided with a coupling (506), and a graded bearing seat (507) is installed on the coupling (506). A graded wheel (508) is installed on the bottom surface of the graded bearing seat (507) through a connecting shaft. The upper edge of the graded wheel (508) is adapted to the edge of the arc-shaped cover (501) to prevent polarization when the graded wheel (508) rotates.

4. The oxide ore sorting and pretreatment device according to claim 3, characterized in that: The inner wall of the crushing chamber (408) is provided with a number of fixing rods (511). The fixing rods (511) are divided into four groups and are arranged around the crushing chamber (408). A flow divider (512) is fixedly installed on the other end face of the fixing rod (511). The flow divider (512) is arranged above the crushing disc (410) and there is a gap between it and the crushing disc (410). The upper part of the flow divider (512) forms a return channel from the bottom and edge of the crushing disc (410) to the classifier wheel (508) with the arc-shaped cover (501) and the crushing chamber (408).

5. The oxide ore sorting and pretreatment device according to claim 4, characterized in that: The grinding chamber (408) has a through hole fixedly opened on its side, and an air inlet (509) is fixedly installed on the inner wall of the through hole. A filter grid (510) is snapped onto the bottom surface of the air inlet (509). The air inlet (509) passes through the mounting plate (1) and extends to the bottom of the mounting plate (1). The filter grid (510) is connected to the air inlet (509) as the main filter component, which improves the speed of disassembly and replacement.

6. The oxide ore sorting and pretreatment device according to claim 1, characterized in that: The auxiliary feeding mechanism (6) includes a jaw crusher (601), which is fixedly connected to the top surface of the mounting plate (1). A storage bin (602) is installed below the jaw crusher (601). A through hole is opened on the storage bin (602), and a discharge cylinder (603) is fixedly installed on the inner wall of the through hole. A servo motor (604) is installed on the discharge cylinder (603). A rotating rod (606) is fixedly installed on the end face of the transmission rod of the servo motor (604). A rotating blade is installed on the rotating rod (606). 607), the rotating rod (606) is rotatably mounted with a fixing part (605) on its side via a bearing. The side of the fixing part (605) is fixedly connected to the discharge cylinder (603). The side of the discharge cylinder (603) is provided with a through hole. A feed pipe (608) is fixedly installed in the through hole. The bottom of the discharge cylinder (603) extends into the storage bin (602). The bottom side of the discharge cylinder (603) is fixedly provided with a feed inlet (609). The end face of the feed pipe (608) is connected to the through hole opened on the crushing chamber (408) via a flange.

7. The oxide ore sorting and pretreatment device according to claim 1, characterized in that: The opening and closing mechanism (7) includes a mounting frame (701), the bottom surface of which is fixedly connected to the mounting plate (1). A connecting rod is provided on the mounting frame (701), and a bushing (702) is sleeved on the side of the connecting rod through a bearing. A connecting frame (703) is fixedly installed on the side of the bushing (702), and the connecting frame (703) is fixedly connected to the side of the arc-shaped cover (501). A pull rod (704) is fixedly installed on the side of the bushing (702), and a hinge is fixedly installed on one side of the pull rod (704). A cylinder (705) is installed on the other end of the hinge. A hinge is provided at the bottom of the cylinder (705), and the other end of the hinge is fixedly connected to the top surface of the mounting plate (1).

8. The oxide ore sorting and pretreatment device according to claim 1, characterized in that: The slurry preparation mechanism (10) includes a tank body (1001), a transmission pipe (1005) is fixedly installed on the side of the tank body (1001), the transmission pipe (1005) is fastened to the discharge port (503) by bolts, a first dosing port (1002) is fixedly provided on the tank body (1001), a through hole is opened on the tank body (1001), a second dosing port (1004) is fixedly provided on the inner wall of the through hole, a feed cover is slidably installed on the second dosing port (1004), the feed cover is snapped into the second dosing port (1004), a water injection port (1003) is fixedly provided on the tank body (1001), a communicating vessel (1007) is fixedly provided on the side of the tank body (1001), and a discharge port (1006) is fixedly provided on the bottom side of the tank body (1001).

9. The oxide ore sorting and pretreatment device according to claim 1, characterized in that: The mounting plate (1) has an outer frame (2) mounted on its side via a fixing ear. A support leg (3) is fixedly mounted under the outer frame (2). A protective shell (8) is snapped onto the bottom surface of the mounting plate (1). A heat dissipation hole (9) is fixedly opened on the side of the protective shell (8).

10. The oxide ore separation pretreatment apparatus according to any one of claims 1-9, the present invention further provides an oxide ore separation pretreatment slurry preparation method, characterized in that: Includes the following steps: Step 1: First, ensure that the oxide ore has been pretreated to the required particle size, and then transfer it into the tank (1001); Step 2: Add an appropriate amount of water into the tank (1001) through the water inlet (1003), and then add pH adjuster into the tank (1001) through the first chemical dosing port (1002) to adjust the acidity and alkalinity of the slurry, creating an environment and inhibitor for subsequent reactions; Step 3: Add inhibitors into tank (1001) to suppress gangue minerals and reduce their interference with the flotation of valuable metals; Step 4: Add the collector into the tank (1001) through the second dosing port (1004) to make the surface of the useful minerals hydrophobic and easy to float, while promoting the hydrophobic agglomeration of fine particles. After waiting for the reaction time, the separation is enhanced, which improves the grade of the concentrate and ensures the recovery rate.

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