Magnetic separation beneficiation device for extremely-low-grade ilmenite in coal gangue

Abstract

The utility model discloses a magnetic separation beneficiation device for extremely low grade ilmenite in coal gangue, which comprises a rack and a mineral aggregate box fixed at the top end of the rack and used for receiving crushed coal gangue, bearing seats are mounted on two inner walls of the mineral aggregate box, a main shaft is rotatably mounted between the two bearing seats, and the main shaft is fixedly connected with the rack. A magnetic roller is fixed to the peripheral face of the main shaft, a vertical arm is integrally formed on one side of the top end of the mineral material box, a scraper extending upwards in an inclined mode is installed on the outer wall of the side, close to the magnetic roller, of the vertical arm, and a discharging hopper used for receiving materials scraped by the scraper is installed on the back face of the mineral material box. The scraper is used for cleaning the periphery of the magnetic roller, it is ensured that crushed aggregates cannot be accumulated to influence the degree of a magnetic field, it is ensured that the magnetic roller stably and continuously works, the automatic discharging structure also reduces the equipment maintenance burden generated by manual cleaning, and the working efficiency is improved. And due to the design of scraper and belt feeding, equipment maintenance and inspection become simpler and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic separation and beneficiation, in particular to a magnetic separation and beneficiation device for extremely low-grade ilmenite in coal gangue. Background Art

[0002] Gangue is a kind of solid waste generated in the process of coal mining, mainly including useless rocks and gangue entrained in coal mines, such as non-coal minerals such as sandstone, shale and mudstone, which are usually regarded as the source of environmental burden and resource waste. However, through the magnetic separation process, especially for the ilmenite ore, the purpose of multiple recycling can be achieved. Through magnetic separation, ilmenite rich in titanium can be effectively separated from the gangue for the manufacture of titanium dioxide, titanium alloy and other high-tech materials. The extremely low-grade ilmenite magnetic separation device is specially used to extract valuable minerals from waste, and is composed of a feeding system, a magnetic separator, an iron removal system, a slag discharge system and an electrical control system. By setting a high-intensity magnetic field, the device can effectively separate magnetic minerals such as ilmenite and remove ferromagnetic impurities, ensuring that the magnetic separation process is stable and efficient. At present, when the magnetic separation device uses a magnetic roller for dry separation of ore, a large amount of ilmenite crushed materials are easily adhered to the outer surface of the magnetic roller, and as the amount of ilmenite crushed materials adhered to the outer surface of the magnetic roller increases, the effect of the magnetic field will be hindered or weakened. At this time, the magnetic field cannot effectively penetrate the covering layer to act on the feed, which will cause the magnetic separation effect to decrease, reducing the processing capacity of the equipment. Utility Model Content

[0003] The purpose of the utility model is to provide a magnetic separation device for extremely low-grade ilmenite in coal gangue, in which a pulley drive unit drives the magnetic roller and the belt feeding structure to move together, and in the process of rotation of the magnetic roller, the extremely low-grade ilmenite in the ore box is magnetically separated, and the ore adsorbed on its outer surface is actively scraped into the discharge hopper when passing through the scraper, and finally sent out by the belt feeding structure, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic separation device for extremely low-grade ilmenite in coal gangue, comprising a frame and a ore box fixed on the top of the frame for receiving coal gangue crushed materials, bearing seats are installed on both inner walls of the ore box, a main shaft is rotatably installed between the two bearing seats, a magnetic roller is fixed on the outer peripheral surface of the main shaft, a vertical arm is integrally formed on one side of the top of the ore box, a scraper extending obliquely upward is installed on the outer wall of the side of the vertical arm close to the magnetic roller, a discharge hopper for receiving the material scraped by the scraper is installed on the back of the ore box, a belt feeding structure is installed at the bottom of the frame, and a pulley driving unit for driving the main shaft and the belt feeding structure is installed on the outer wall of one side of the ore box.

[0005] Preferably, a U-shaped material box is installed on one side outer wall of the mineral material box.

[0006] Preferably, the length of the scraper is greater than or equal to the length of the magnetic roller, and the scraper is made of aluminum alloy.

[0007] Preferably, the pulley drive unit includes a right-angle table installed on the outer wall of one side of the ore box, and a reduction motor installed on the outer wall of one side of the pulley drive unit, and the output end of the reduction motor is installed with a belt transmission structure for connecting the main shaft and the belt feeding structure.

[0008] Preferably, the belt transmission structure comprises a driving wheel installed at one end of the main shaft and a driven wheel installed at the input end of the belt feeding structure, and a crawler belt is installed between the driving wheel and the driven wheel.

[0009] Preferably, a rectangular cutout for arranging the crawler track is provided on one side outer wall of the right-angle platform.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the magnetic separation device for extremely low-grade ilmenite in coal gangue is provided with a magnetic roller, a scraper and other structures that cooperate with each other. During the operation of the device, the scraper cleans the outer periphery of the magnetic roller to ensure that the debris does not accumulate to the extent of affecting the magnetic field, thereby ensuring that the magnetic roller can work stably and continuously, and the automated discharge structure also reduces the equipment maintenance burden caused by manual cleaning, and the design of the scraper and belt feeding makes equipment maintenance and inspection simpler and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0015] In the figure: 1. frame; 2. right-angle table; 3. pulley drive unit; 4. ore box; 401. vertical arm; 402. scraper; 5. main shaft; 6. magnetic roller; 7. discharge hopper; 8. belt feeding structure. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-4 The utility model provides an embodiment: a magnetic separation device for extremely low-grade ilmenite in coal gangue, comprising a frame 1 and a ore box 4 fixed at the top of the frame 1 for receiving coal gangue crushed materials, non-mineral materials are retained in the ore box 4, bearing seats are installed on both inner walls of the ore box 4, a main shaft 5 is rotatably installed between the two bearing seats, a magnetic roller 6 is fixed on the outer peripheral surface of the main shaft 5, a vertical arm 401 is integrally formed on one side of the top of the ore box 4, a scraper 402 extending obliquely upward is installed on the outer wall of the side of the vertical arm 401 close to the magnetic roller 6, a discharging hopper 7 for receiving the material scraped by the scraper 402 is installed on the back of the ore box 4, a belt feeding structure 8 is installed at the bottom of the frame 1, and the metal ore will be sent out through the belt feeding structure 8, so as to ensure the smooth flow of the ore from the magnetic separator to the discharging system, and a pulley driving unit 3 for driving the main shaft 5 and the belt feeding structure 8 is installed on one side of the outer wall of the ore box 4;

[0018] A U-shaped material box is installed on one side outer wall of the ore box 4, and the U-shaped material box increases the storage capacity of the ore box 4;

[0019] The length of the scraper 402 is greater than or equal to the length of the magnetic roller 6, ensuring that all the ilmenite minerals scraped from the surface of the magnetic roller 6 can be effectively collected into the discharge hopper 7. The scraper 402 is made of aluminum alloy. The aluminum alloy has high strength and low weight. Compared with traditional steel, the aluminum alloy can provide sufficient strength without adding additional burden.

[0020] The pulley drive unit 3 drives the main shaft 5 and the magnetic roller 6 to rotate clockwise, so that the magnetically attracted mineral material can be scraped off by the scraper 402 and enter the discharge hopper 7 along the scraper 402 without manual intervention, which greatly reduces the labor intensity and operating cost of the operator;

[0021] The pulley drive unit 3 includes a right-angle platform 2 installed on the outer wall of one side of the ore box 4, and a reduction motor installed on the outer wall of one side of the pulley drive unit 3. The output end of the reduction motor is installed with a belt transmission structure for connecting the main shaft 5 and the belt feeding structure 8. The belt transmission structure is a driving wheel installed at one end of the main shaft 5 and a driven wheel installed at the input end of the belt feeding structure 8. A crawler is installed between the driving wheel and the driven wheel. A rectangular cutout for arranging the crawler is provided on the outer wall of one side of the right-angle platform 2;

[0022] The pulley drive unit 3 adopts a reduction motor and a belt transmission structure, so that the rotational power of the reduction motor is transmitted to the main shaft 5 and the belt feeding structure 8 respectively. Its stable rotation speed ensures the effective effect of the magnetic field on the mineral, so that the magnetic roller 6 is in stable and continuous contact with the mineral material in the mineral box 4, thereby improving the sorting effect.

[0023] When the embodiment of the present application is in use, first, the staff will crush the coal gangue materials to be magnetically separated and discharge them into the ore box 4 uniformly, and then the staff will start the pulley drive unit 3 to work, and the rotational power of the pulley drive unit 3 will be transmitted to the main shaft 5 and the belt feeding structure 8 respectively, that is, the main shaft 5 drives the magnetic roller 6 to rotate, and the belt feeding structure 8 receives the material at the discharge port of the discharge hopper 7 and allows the extremely low-grade ilmenite ore after separation to be sent out. When the magnetic roller 6 rotates, the magnetic roller 6 generates a magnetic field to absorb and separate the magnetic minerals, so that the magnetic minerals are magnetically attracted to its own outer peripheral surface, and the pulley drive unit 3 ensures that the magnetic roller 6 runs at a stable speed, thereby maintaining the continuity and stability of the magnetic separation process. As the magnetic roller 6 rotates, the ore When being transported along the drum surface to the position of the scraper 402, the scraper 402 scrapes off the mineral material magnetically attracted to the drum surface, and because the scraper 402 itself is a downwardly inclined slope, the scraped mineral material passes through the slope of the scraper 402 itself and enters the discharge hopper 7 again, thereby forming an effective mineral separation path, and the mineral material in the discharge hopper 7 can smoothly fall on the belt surface of the belt feeding structure 8 until the sorted mineral material is sent out. During the working process of the device, the scraper 402 cleans the outer periphery of the magnetic drum 6 to ensure that the debris does not accumulate to the extent of affecting the magnetic field, thereby ensuring that the magnetic drum 6 works stably and continuously, and the automated discharge structure also reduces the equipment maintenance burden caused by manual cleaning, and the design of the scraper 402 and the belt feeding makes equipment maintenance and inspection simpler and more efficient.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A magnetic separation device for extremely low-grade ilmenite in coal gangue, characterized in that: The invention comprises a frame (1) and a material box (4) fixed at the top of the frame (1) for receiving coal gangue crushed materials, bearing seats are installed on both inner walls of the material box (4), a main shaft (5) is rotatably installed between the two bearing seats, a magnetic roller (6) is fixed on the outer peripheral surface of the main shaft (5), a vertical arm (401) is integrally formed on one side of the top of the material box (4), a scraper (402) extending obliquely upward is installed on the outer wall of the side of the vertical arm (401) close to the magnetic roller (6), a discharge hopper (7) for receiving materials scraped by the scraper (402) is installed on the back of the material box (4), a belt feeding structure (8) is installed at the bottom of the frame (1), and a pulley driving unit (3) for driving the main shaft (5) and the belt feeding structure (8) is installed on the outer wall of one side of the material box (4).

2. The magnetic separation device for extremely low-grade ilmenite in coal gangue according to claim 1, characterized in that: A U-shaped material box is installed on one side outer wall of the mineral material box (4).

3. The magnetic separation device for extremely low-grade ilmenite in coal gangue according to claim 1, characterized in that: The length of the scraper (402) is greater than or equal to the length of the magnetic roller (6), and the scraper (402) is made of an aluminum alloy component.

4. The magnetic separation device for extremely low-grade ilmenite in coal gangue according to claim 1, characterized in that: The pulley drive unit (3) comprises a right-angle platform (2) mounted on the outer wall of one side of the ore box (4), and a reduction motor mounted on the outer wall of one side of the pulley drive unit (3), wherein the output end of the reduction motor is mounted with a belt transmission structure for connecting the main shaft (5) and the belt feeding structure (8).

5. The magnetic separation device for extremely low-grade ilmenite in coal gangue according to claim 4, characterized in that: The belt transmission structure comprises a driving wheel installed at one end of the main shaft (5) and a driven wheel installed at the input end of the belt feeding structure (8), and a crawler belt is installed between the driving wheel and the driven wheel.

6. The magnetic separation device for extremely low-grade ilmenite in coal gangue according to claim 5, characterized in that: A rectangular cutout for arranging the crawler track is provided on one side outer wall of the right-angle platform (2).

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