Electromagnetic discharge device for magnetic separator

Abstract

The utility model relates to a magnetic separator electromagnetic ore unloading device belongs to magnetic mineral dressing equipment technical field, the utility model discloses the technical scheme is: electromagnet (1) is installed in the magnetic separator ore unloading end one side, height is located the tangent place of the maximum diameter of cylinder, the position of 2 3cm from the cylinder surface, the both ends of electromagnet (1) are fixed on the base (3) by screw (2), and the base (3) is installed and fixed in the magnetic separator groove body through base hole (4), and electromagnet (1) is connected with PLC controller (5). The utility model has the beneficial effects that: through the use of the adsorption characteristics of electromagnet, the purpose of ore unloading is realized, and the ore unloading is not affected by water pressure fluctuation, thereby improving the ore unloading efficiency of the magnetic separator, greatly reducing the loss of concentrate in tailings, improving the recovery rate of the magnetic separator, saving water resources, increasing the economic benefit of the concentrator, convenient to use, less investment, reliable work.

Description

Technical Field

[0001] This utility model relates to an electromagnetic unloading device for a magnetic separator, belonging to the technical field of magnetic mineral beneficiation equipment. Background Technology

[0002] Wet permanent magnet drum separators are the most widely used beneficiation equipment in magnetite beneficiation plants. Depending on their structure, the main unloading methods for magnetic separators include high-pressure water + nozzles, scrapers, and overflow troughs. In weak magnetic separation, when the concentrate reaches the edge of the magnetic system, it enters the concentrate hopper under the force of the unloading water, thus completing the separation. Existing weak magnetic separator unloading devices use duckbill valves to spray water or overflow troughs for unloading. These methods cannot adjust the water pressure according to the height of the concentrate belt. Traditional duckbill valves spray water in a flat arc shape, which makes unloading impossible at low pressures and prone to leakage; at high pressures, it easily causes splashing, which is detrimental to beneficiation production and maintenance, resulting in resource waste. Scraper unloading, on the other hand, easily wears down the drum skin, accelerating drum wear. Summary of the Invention

[0003] The purpose of this invention is to provide an electromagnetic unloading device for a magnetic separator. By utilizing the adsorption properties of electromagnets, a magnetic field is generated when energized to adsorb magnetic minerals. When the power is off, the magnetic field disappears, and the adsorbed magnetic minerals fall off, achieving the purpose of unloading. Unloading is unaffected by water pressure fluctuations, thereby improving the unloading efficiency of the magnetic separator, greatly reducing the loss of concentrate in tailings, and increasing the recovery rate of the magnetic separator. It successfully solves the problems of difficult unloading and low recovery rate of magnetic separators, while also saving water resources, increasing the economic benefits of the concentrator, being easy to use, requiring less investment, and operating reliably, thus solving the aforementioned problems in the background technology.

[0004] The technical solution of this utility model is: an electromagnetic unloading device for a magnetic separator, comprising an electromagnet, screws, a base, and a PLC controller. The electromagnet is installed on one side of the unloading end of the magnetic separator, at a height located at the tangent of the maximum diameter of the cylinder, 2-3 cm away from the surface of the cylinder. The cylinder of the magnetic separator is mounted on a frame via a main shaft and bearing seats. The two ends of the electromagnet are fixed to the base with screws, and the base is installed and fixed to the magnetic separator tank through base holes. The electromagnet is a DC electromagnet, and its DC power supply is connected to the PLC controller.

[0005] The mounting holes on the base are elongated.

[0006] The electromagnet is long and narrow, with a length not less than the length of the cylinder, and an electromagnetic attraction force not less than 30,000 N.

[0007] The electromagnet comprises a housing, an iron core, a coil, and leads. The iron core and the coil are disposed inside the housing. The coil has a U-shaped DC structure, and the iron core is located inside the U-shaped DC structure of the coil. The iron core is a soft iron core. The coil is connected to a DC power supply through leads. The housing is sealed with epoxy resin.

[0008] The beneficial effects of this invention are as follows: By utilizing the adsorption characteristics of electromagnets, a magnetic field is generated when energized to adsorb magnetic minerals; when the power is off, the magnetic field disappears, and the adsorbed magnetic minerals fall off, achieving the purpose of unloading the ore. The unloading is not affected by water pressure fluctuations, thereby improving the unloading efficiency of the magnetic separator, greatly reducing the loss of concentrate in tailings, and increasing the recovery rate of the magnetic separator. It successfully solves the problems of difficult unloading and low recovery rate of the magnetic separator, while saving water resources, increasing the economic benefits of the concentrator, being easy to use, requiring less investment, and being reliable in operation. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0010] Figure 2 This is a partial enlarged view of the base of this utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the electromagnet of this utility model;

[0012] Figure 4 This is a cross-sectional view of the electromagnet of this utility model;

[0013] In the diagram: 1. Electromagnet; 2. Screw; 3. Base; 4. Base hole; 5. PLC controller; 6. Housing; 7. Iron core; 8. Bolt; 9. Coil; 10. Lead wire; 11. Cylinder; 12. Main shaft; 13. Bearing seat; 14. Magnetic separator tank; 15. Frame; 16. Magnetic system; 17. Magnetic mineral powder; 18. Unloading hopper; 19. Epoxy resin seal. Detailed Implementation

[0014] To make the purpose, technical solution, and advantages of this utility model clearer, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described implementation cases are only a small part of this utility model, not all of them. All other implementation cases obtained by those skilled in the art based on the implementation cases of this utility model without creative effort are within the protection scope of this utility model.

[0015] An electromagnetic unloading device for a magnetic separator includes an electromagnet 1, screws 2, a base 3, and a PLC controller 5. The electromagnet 1 is installed on one side of the unloading end of the magnetic separator, at a height located at the tangent of the maximum diameter of the cylinder 11, 2-3 cm away from the surface of the cylinder 11. The cylinder 11 of the magnetic separator is mounted on a frame 15 via a main shaft 12 and a bearing seat 13. The two ends of the electromagnet 1 are fixed to the base 3 by screws 2, and the base 3 is installed and fixed to the magnetic separator tank 14 through base holes 4. The electromagnet 1 is a DC electromagnet, and its DC power supply is connected to the PLC controller 5.

[0016] The mounting holes on the base 3 are elongated.

[0017] The electromagnet 1 is long and narrow, with a length not less than the length of the cylinder 11, and an electromagnetic attraction force not less than 30,000 N.

[0018] The electromagnet 1 includes a housing 6, an iron core 7, a coil 9, and a lead wire 10. The iron core 7 and the coil 9 are disposed inside the housing 6. The coil 9 has a U-shaped DC structure, and the iron core 7 is located inside the U-shaped DC structure of the coil 9. The iron core 7 is a soft iron core. The coil 9 is connected to a DC power supply through the lead wire 10. The housing 6 is sealed with epoxy resin.

[0019] In practical applications, electromagnet 1 is installed on the side plate of the magnetic separator tank 14 at the ore discharge end, at a height located at the tangent of the maximum diameter of the cylinder 11, approximately 2-3 cm from the surface of the cylinder 11. Both ends of electromagnet 1 are fixed to the base 3 by screws 2. The base 3 is installed and fixed to a suitable position on the side plate of the magnetic separator tank 14 through base holes 4. The cylinder 11 of the magnetic separator is fixed to the frame 15 via bearing seats 13. Mineral powder requiring separation enters the magnetic separator tank 14. Through the adsorption effect of the magnetic system 16 inside the magnetic separator, the magnetic mineral powder 17 is attracted to the ore discharge hopper 18 located in the discharge area. After the accumulated magnetic mineral powder 17 is released from the magnetic system 16, it falls into the ore discharge hopper 18. Magnetic mineral powder that is not completely discharged and adheres to the surface of the cylinder 11 is attracted by electromagnet 1 when it passes through, thus achieving the discharge of any missed mineral powder. The electromagnet 1 is energized and de-energized for a period of time and the magnitude of the current by the PLC controller 5. This controls the electromagnet's attraction force, the time for attracting magnetic mineral powder, and the unloading time, thereby achieving the periodic unloading of iron concentrate.

[0020] In this embodiment, the mounting holes of the base 3 are all elongated, which facilitates the adjustment of the installation height of the electromagnet and the distance from the cylinder.

[0021] Electromagnet 1 is long and narrow, with a length not less than the length of the cylinder and an electromagnetic attraction force not less than 30,000 N.

[0022] Electromagnet 1 is a U-shaped DC, soft iron core, sealed with epoxy resin.

[0023] This invention primarily utilizes the adsorption properties of electromagnets. When energized, a magnetic field is generated to adsorb magnetic minerals; when the power is off, the magnetic field disappears, and the adsorbed magnetic minerals detach, achieving the purpose of ore unloading. During the operation of the magnetic separator, the electromagnet works continuously with the rotation of the drum, adsorbing magnetite powder adhering to the drum surface onto the electromagnet surface. The electromagnet operates in pulsating motion with the on and off states of the current, achieving the adsorption and unloading of magnetite powder. This invention significantly reduces the loss of concentrate in tailings, improves the recovery rate of the magnetic separator, successfully solves the problems of difficult unloading and low recovery rate in magnetic separators, while saving water resources and increasing the economic benefits of the concentrator. It is convenient to use, requires minimal investment, operates reliably, and unaffected by water pressure fluctuations, thereby improving the unloading efficiency of the magnetic separator. It reduces metal loss and increases the recovery rate.

Claims

1. An electromagnetic unloading device for a magnetic separator, characterized in that: The device includes an electromagnet (1), screws (2), a base (3), and a PLC controller (5). The electromagnet (1) is installed on one side of the ore discharge end of the magnetic separator, at a height of 2-3 cm from the surface of the cylinder (11) at the tangent of the maximum diameter of the cylinder (11). The cylinder (11) of the magnetic separator is installed on the frame (15) through the main shaft (12) and the bearing seat (13). The two ends of the electromagnet (1) are fixed to the base (3) by screws (2). The base (3) is installed and fixed to the magnetic separator tank (14) through the base hole (4). The electromagnet (1) is a DC electromagnet, and its DC power supply is connected to the PLC controller (5).

2. The electromagnetic unloading device for a magnetic separator according to claim 1, characterized in that: The mounting holes on the base (3) are elongated.

3. The electromagnetic unloading device for a magnetic separator according to claim 1, characterized in that: The electromagnet (1) is long and narrow, and the length of the electromagnet (1) is not less than the length of the cylinder (11).

4. The electromagnetic unloading device for a magnetic separator according to claim 1, characterized in that: The electromagnet (1) includes a housing (6), an iron core (7), a coil (9), and a lead wire (10). The iron core (7) and the coil (9) are located inside the housing (6). The coil (9) has a U-shaped DC structure. The iron core (7) is located inside the U-shaped DC structure of the coil (9). The iron core (7) is a soft iron core. The coil (9) is connected to a DC power supply through the lead wire (10). The housing (6) is sealed with epoxy resin.

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