Parallel-distribution double-screening magnetic separator

Abstract

The parallel-distribution double-screening magnetic separator comprises a box body, a vibrating feeder, a first magnetic roller, a second magnetic roller, a first magnetic system, a second magnetic system, a tailing discharge port and a concentrate discharge port, a stock bin is arranged on the upper side of the box body, the vibrating feeder is installed on the lower side of the stock bin, and the first magnetic roller and the second magnetic roller are arranged in parallel; the first magnetic system area and the second magnetic system area are located on the lower half portions of roller bodies of the first magnetic roller and the second magnetic roller respectively, the magnetic force of the second magnetic system is larger than that of the first magnetic system, and the second magnetic system area and the second magnetic system area are fixed to the box body in an extending mode. And a tailing discharge port and a concentrate discharge port are respectively arranged on the box body on the lower side of the magnetic roller. The screening device has the effect of improving the screening efficiency.

Description

Technical Field

[0001] This application relates to the field of screening technology, and more particularly to a magnetic separator with parallel distributed dual screening. Background Technology

[0002] Currently, magnetic separators are devices that separate magnetic materials from non-magnetic materials by utilizing the difference in force experienced by the materials in a magnetic field. They can be used for the separation and purification of magnetic minerals such as iron ore and crude concentrate.

[0003] Traditional magnetic separators mainly use a single-drum structure to separate magnetic materials in the process of separating iron ore and rough concentrate. The working principle is to use the magnetic drum to adsorb magnetic minerals, while non-magnetic minerals are discharged by gravity. Single-stage magnetic separation is difficult to effectively remove impurities mixed in magnetic minerals, resulting in large fluctuations in concentrate grade.

[0004] Regarding the aforementioned technologies, the applicant believes that traditional magnetic separators suffer from a rough screening process and low screening quality. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a magnetic separator with parallel distributed dual screening.

[0006] This application provides a parallel-distributed, dual-screen magnetic separator, which adopts the following technical solution:

[0007] A parallel-distributed dual-screen magnetic separator includes a housing, a vibrating feeder, a first magnetic drum, a second magnetic drum, a first magnetic system, a second magnetic system, a tailings discharge port, and a concentrate discharge port. A hopper is provided on the upper side of the housing, and the vibrating feeder is installed on the lower side of the hopper. The first and second magnetic drums are arranged in parallel and both extend and are fixed to the housing. The rotation direction of both drums is counterclockwise. The first and second magnetic system regions are located in the lower half of the cylinders of the first and second magnetic drums, respectively. The magnetic force of the second magnetic system is greater than that of the first magnetic system, and both extend and are fixed to the housing. The tailings discharge port and the concentrate discharge port are respectively located on the housing below the magnetic drums.

[0008] By adopting the above technical solution: the material is conveyed to the No. 1 magnetic drum by the vibrating feeder. When the No. 1 magnetic drum rotates, the non-magnetic material falls into the tailings discharge port, and the magnetic material is attracted to the surface of the drum by the magnetic poles inside the drum. When the magnetic material is conveyed between the No. 1 magnetic drum and the No. 2 magnetic drum, because the magnetic force of the second magnetic system is greater than that of the first magnetic system, the second magnetic system attracts the magnetic material and conveys it to the No. 2 magnetic drum for secondary screening.

[0009] Preferably, a third magnetic roller is provided at the lower side position between the first magnetic roller and the second magnetic roller, and the third magnetic roller rotates in a clockwise direction. A third magnetic system is provided inside the third magnetic roller, and the magnetic force of the third magnetic system is the same as that of the second magnetic system.

[0010] By adopting the above technical solution: when the magnetic material is transferred between the first magnetic roller and the second magnetic roller, some of the magnetic material will inevitably be lost when the magnetic material changes position. When magnetic material falls, the third roller between the two moves clockwise. Under the action of the third magnetic system, the lost magnetic material is transferred back to the second magnetic roller for screening, which improves the utilization rate of the material.

[0011] Preferably, the second magnetic system wrap angle of the second magnetic roller is larger than the first magnetic system wrap angle of the first magnetic roller, and the larger portion is on the side closer to the first magnetic roller.

[0012] By adopting the above technical solution, when materials are working alternately, the large second magnetic system wrap angle of the second magnetic roller can fully attract magnetic materials from the first magnetic roller, avoiding excessive magnetic material loss and causing excessive working pressure on the third magnetic roller.

[0013] Preferably, a staggered serrated opening plate is installed at the discharge end of the vibrating feeder to ensure that the material is evenly distributed on the No. 1 magnetic drum.

[0014] By adopting the above technical solution: the material falls from the silo into the vibrating feeder. When the vibrating feeder transports the material to the feeder's inlet, the material is evenly distributed and output to the No. 1 magnetic drum through the sawtooth-shaped opening plate, which reduces the working pressure of the No. 1 magnetic drum and improves the efficiency of the No. 1 magnetic drum's primary screening.

[0015] Preferably, a buffer baffle is provided on the box at the tailings discharge port, the buffer baffle is fixedly connected to the box, and the surface of the buffer baffle is covered with a wear-resistant rubber layer.

[0016] By adopting the above technical solution, a buffer baffle is installed at the tailings discharge port on the lower side of the vibrating feeder. This is because there is too much material at the output of the vibrating feeder, and the lower box body suffers a large impact. Therefore, the buffer baffle can reduce the impact force of the falling tailings and extend the service life of the box body.

[0017] Preferably, a scraper is provided at the end of the second magnetic system of the second magnetic roller, and the scraper is fixedly installed inside the box.

[0018] By adopting the above technical solution: a scraper is provided on the side of the second magnetic roller near the box. When the second magnetic roller rotates too fast, the scraper can assist in feeding the material and prevent the magnetic material from flying around due to the inertia of the second magnetic roller when it exceeds the range of the second magnetic system.

[0019] Preferably, a dust removal port is provided on the upper side of the housing, where an industrial vacuum cleaner can operate, and a filter screen is provided at the dust removal port.

[0020] By adopting the above technical solution: when the magnetic separator is working, dust will be generated inside the box, affecting the working environment inside the box. The dust removal port is opened on the upper side of the box to facilitate the cleaning of dust inside the box by the industrial vacuum cleaner. The filter screen is added to isolate the fine materials from being sucked out at the same time when the industrial vacuum cleaner is working. When the industrial vacuum cleaner is turned off, the fine materials will naturally fall onto the magnetic roller.

[0021] Preferably, a handle is provided on the outside of the vibrating feeder, and a hanging rod is provided on the outside of the housing, so that the handle can be rotated to hang on the hanging rod.

[0022] By adopting the above technical solution: when the magnetic separator is working, the handle is removed from the hanging rod, so that the vibrating feeder is in an inclined state and the tail end of the vibrating feeder is supported by the box. When the magnetic separator is not working, the handle is moved to hang it on the hanging rod, so that the vibrating feeder is kept in a parallel state and the feed inlet is kept closed, which can prevent foreign matter from falling into the magnetic separator.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The material is conveyed to the No. 1 magnetic drum by the vibrating feeder. When the No. 1 magnetic drum rotates, the non-magnetic material falls into the tailings discharge port, and the magnetic material is attracted to the surface of the drum by the magnetic poles inside the drum. When the magnetic material is conveyed between the No. 1 magnetic drum and the No. 2 magnetic drum, because the magnetic force of the second magnetic system is greater than that of the first magnetic system, the second magnetic system attracts the magnetic material and conveys it to the No. 2 magnetic drum for secondary screening.

[0025] 2. When the magnetic material is transferred between the first and second magnetic rollers, some of it is inevitably lost when the magnetic material changes position. When some magnetic material falls, the third roller between the two rollers moves clockwise. Under the action of the third magnetic system, the lost magnetic material is transferred back to the second magnetic roller for screening, which improves the utilization rate of the material. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the left side cross-section of the magnetic separator.

[0027] Figure 2 yes Figure 1 Schematic diagram of the AA section.

[0028] Explanation of reference numerals in the attached drawings: 1. Box body; 12. Tailings discharge port; 13. Concentrate discharge port; 14. Dust removal port; 15. Hanging rod; 2. Vibrating feeder; 21. Handle; 3. No. 1 magnetic drum; 31. First magnetic system; 4. No. 2 magnetic drum; 41. Second magnetic system; 5. No. 3 magnetic drum; 51. Third magnetic system; 6. Serrated opening plate; 7. Buffer baffle; 8. Scraper; 9. Filter screen. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a magnetic separator with parallel distributed dual screening. (Refer to...) Figure 1-2 The system includes a housing 1, a vibrating feeder 2, a first magnetic drum 3, a second magnetic drum 4, a first magnetic system 31, a second magnetic system 41, a tailings discharge port 12, and a concentrate discharge port 13. The tailings discharge port 12 has a buffer baffle 7 near the discharge position, which is fixed to the housing 1. A hopper is located on the upper side of the housing 1, and the vibrating feeder 2 is located below the hopper. One side of the vibrating feeder 2 is fixed by a bearing and can rotate around it. In operation, the other side of the vibrating feeder 2 is tilted by the housing support. The output port of the vibrating feeder 2 has a serrated opening plate 6. The vibrating feeder 2 has a handle 21 on the outer side of the housing, which is fixedly connected to the vibrating feeder 2. A hanging rod 15 is fixed on the housing 1; when not in operation, the handle 21 is moved to fix it via the hanging rod 15. A dust removal port 14 is located on the upper side of the housing 1, and a filter screen 9 is fixedly connected to the housing 1 at the dust removal port 14.

[0031] Inside the housing 1, there are two parallel magnetic rollers, namely magnetic roller 3 and magnetic roller 4, which are fixed horizontally. Each magnetic roller is fixedly connected to a motor, and the motor is fixedly installed on one side of the housing 1. The magnetic roller 3 and magnetic roller 4 are respectively provided with a first magnetic system 31 and a second magnetic system 32. The magnetic systems extend backward and are fixed on the housing 1. The magnetic systems are all located on the lower side of the roller. The wrap angle of the first magnetic system 31 is smaller than that of the second magnetic system 32, and the excess part of the wrap angle of the second magnetic system 32 is close to the point where the two are close. A third magnetic roller 5 is provided below the connection between the first magnetic roller 3 and magnetic roller 4. The third magnetic roller 5 is provided with a third magnetic system 51, and the third magnetic system 51 is located in the upper half of the third magnetic roller 5. A scraper 8 is fixed on the right side of the housing 1 of the second magnetic roller 4. The end face of the scraper 8 is in contact with the surface of the second magnetic roller 4.

[0032] The working principle of a parallel distribution dual-screen magnetic separator in this application is as follows: the material is input through the hopper and falls onto the vibrating feeder 2. The vibration of the vibrating feeder 2 feeds the material onto the first magnetic drum 3. The first magnetic system 31 of the first magnetic drum 3 adsorbs magnetic materials, while non-magnetic materials fall to the tailings discharge port 12. When the first magnetic drum 3 carries the magnetic material to near the second magnetic drum 4, the magnetic force of the second magnetic system 41 in the second magnetic drum 4 is greater than that of the first magnetic system 31, thereby adsorbing the magnetic material onto the second magnetic drum 4 for secondary screening. The third magnetic drum 5 on the lower side of the junction between the two allows the magnetic material that could not be transferred in time to be transferred back to the second magnetic drum 4 for screening.

[0033] The above are all 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 magnetic separator with parallel distributed dual screening, characterized in that: The device includes a housing (1), a vibrating feeder (2), a first magnetic drum (3), a second magnetic drum (4), a first magnetic system (31), a second magnetic system (41), a tailings discharge port (12), and a concentrate discharge port (13). A hopper is provided on the upper side of the housing (1), and the vibrating feeder (2) is installed on the lower side of the hopper. The first magnetic drum (3) and the second magnetic drum (4) are arranged in parallel and both extend and are fixed on the housing (1). The rotation direction of the two drums is counterclockwise. The areas of the first magnetic system (31) and the second magnetic system (41) are located in the lower half of the cylinder of the first magnetic drum (3) and the second magnetic drum (4), respectively. The magnetic force of the second magnetic system (41) is greater than that of the first magnetic system (31), and both extend and are fixed on the housing (1). The tailings discharge port (12) and the concentrate discharge port (13) are respectively located on the housing (1) below the magnetic drum.

2. A magnetic separator with parallel distributed dual screening, characterized in that: A third magnetic roller (5) is provided at the lower side between the first magnetic roller (3) and the second magnetic roller (4), and the third magnetic roller (5) rotates clockwise. A third magnetic system (51) is provided inside the third magnetic roller (5), and the magnetic force of the third magnetic system (51) is the same as that of the second magnetic system (41).

3. A magnetic separator with parallel distributed dual screening, characterized in that: Suppose that the wrap angle of the second magnetic system (41) of the second magnetic roller (4) is larger than the wrap angle of the first magnetic system (31) of the first magnetic roller (3), and the larger part is on the side closer to the first magnetic roller (3).

4. A magnetic separator with parallel distributed dual screening, characterized in that: A staggered sawtooth-shaped opening plate (6) is installed at the discharge end of the vibrating feeder (2) to ensure that the material is evenly distributed on the first magnetic drum (3).

5. A magnetic separator with parallel distributed dual screening, characterized in that: A buffer baffle (7) is provided on the box (1) at the tailings discharge port (12). The buffer baffle (7) is fixedly connected to the box (1), and the surface of the buffer baffle (7) is covered with a wear-resistant rubber layer.

6. A magnetic separator with parallel distributed dual screening, characterized in that: A scraper (8) is provided at the end of the second magnetic system (41) of the second magnetic roller (4), and the scraper (8) is fixedly installed inside the box (1).

7. A magnetic separator with parallel distributed dual screening, characterized in that: A dust removal port (14) is provided on the upper side of the housing (1), where an industrial vacuum cleaner can operate, and a filter screen (9) is provided at the dust removal port (14).

8. A magnetic separator with parallel distributed dual screening, characterized in that: A handle (21) is provided on the outside of the vibrating feeder (2), and a hanging rod (15) is provided on the outside of the box (1). The handle (21) can be rotated to hang on the hanging rod (15).

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