Efficient pulverized coal desulfurization electromagnetic separation device

Abstract

An efficient pulverized coal desulfurization electromagnetic separation device belongs to the technical field of pulverized coal desulfurization, can solve the problems that traditional pulverized coal desulfurization is low in removal efficiency and cannot continuously desulfurize materials, and comprises a rack, a feeding hopper is arranged at the top end of one side of the rack, and a conveying device is arranged below the feeding hopper; a rotating disc type magnetic attraction device is arranged over the conveying device, and a collecting hopper is arranged below the conveying device. A spiral conveyor is arranged in the feeding hopper, a motor is arranged at the top end of the spiral conveyor, a magnetron is arranged in the middle of the outer side of the feeding hopper, and an antenna of the magnetron is communicated with the interior of the feeding hopper. By using the device, the desulfurization process can be continuously carried out, and the pulverized coal desulfurization is more efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of coal powder desulfurization, and in particular relates to a high-efficiency coal powder desulfurization electromagnetic separation device. Background Art

[0003] The traditional coal powder desulfurization magnetic separator is a kind of magnetic separator that processes pyrite in coal to convert it into pyrrhotite with strong magnetism, and then performs high gradient magnetic separation on it, so as to remove sulfur from coal powder. However, its selectivity for weakly magnetic pyrite is low, so the sulfur removal rate is low, and the desulfurization of materials is carried out in batches, which cannot achieve the effect of continuous desulfurization of materials. Therefore, a high-efficiency coal powder desulfurization electromagnetic separator is proposed to improve the sulfur removal rate. Summary of the invention

[0004] Aiming at the problems that the removal efficiency of conventional coal powder desulfurization is low and continuous desulfurization of materials cannot be achieved, the present invention provides a high-efficiency coal powder desulfurization electromagnetic separation device.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A high-efficiency coal powder desulfurization electromagnetic separation device comprises a frame, a feed hopper is provided at the top of one side of the frame, a conveying device is provided below the feed hopper, a rotating disc magnetic suction device is provided directly above the conveying device, and a collecting hopper is provided below the conveying device; a screw conveyor is provided in the feed hopper, a motor is provided at the top of the screw conveyor, a magnetron is provided in the middle of the outer side of the feed hopper, and the antenna of the magnetron is communicated with the inside of the feed hopper.

[0006] Furthermore, the conveying device includes a conveying frame, a motor is provided at one end of the conveying frame, rotating rollers are provided at both ends of the conveying frame, a conveyor belt is provided on the rotating rollers, and the output shaft of the motor is connected to the rotating roller at one end.

[0007] Furthermore, the rotating disk magnetic attraction device includes gear one and gear two, and a plurality of conical soft irons are provided on the outer sides of gear one and gear two. Gear one is connected to the frame through rotating shaft one, and a coil is wound on rotating shaft one. A constant speed motor is installed on the upper end of rotating shaft one, and gear two is connected to a tightening sleeve located on the frame through rotating shaft two.

[0008] Furthermore, a copper plate is provided below the gear 1 and the gear 2, the thickness of the copper plate is less than the length of the conical soft iron, and the copper plate completely covers the inner ring of the rotating disk type magnetic attraction device.

[0009] Furthermore, the distance between the bottom of the rotating disk magnetic device and the conveying device is less than 10 cm.

[0010] Furthermore, the gear 1 is located directly above the conveying device, and the gear 2 is located directly above the collecting bucket.

[0011] Furthermore, one end of the collecting bucket is arranged in a trapezoidal shape, and the end of the collecting bucket arranged in a trapezoidal shape extends out of the end of the conveying device.

[0012] Furthermore, a leveling device is provided at the connecting end of the frame and the feed hopper, and the leveling device includes two support frames, one end of the support frame is fixedly connected to the frame, and the other end is rotatably connected to a mounting head, and a roller is provided in the mounting head.

[0013] The beneficial effects of the present invention are as follows: The feed hopper of the present invention combines a screw conveyor and a magnetron, so that a microwave heating function similar to that of a microwave oven is formed between the magnetron and two adjacent spiral plates on the screw conveyor, so that the coal powder is directly magnetically separated after being heated in the feed hopper, thereby improving the efficiency of the desulfurization process.

[0014] The present invention changes the magnetic field intensity on the conical soft iron by changing the number of coils on the rotating disk magnetic attraction shaft and the magnitude of the current passed, thereby achieving a good adsorption effect on pyrite with weaker magnetism and further improving the desulfurization rate of coal powder.

[0015] The rotating disc magnetic gear 2 of the present invention has no magnetism, so when the conical soft iron at gear 1 reaches gear 2, it loses its magnetism, and the adsorbed pyrite cannot continue to be adsorbed. At this time, the pyrite falls into the collecting bucket due to gravity, further allowing the desulfurization process to be carried out continuously, making the coal powder desulfurization more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the rotating disk type magnetic attraction device of the present invention; Figure 4 It is a front view of the paving device of the present invention; Among them: 1-frame; 2-conveying device; 3-rotating disc magnetic device; 4-feeding hopper; 5-collecting hopper; 6-leveling device; 21-conveying frame; 22-motor; 23-rotating roller; 24-conveyor belt; 31-conical soft iron; 32-gear one; 33-gear two; 34-rotating shaft one; 35-coil; 36-constant speed motor; 37-rotating shaft two; 38-tightening sleeve; 39-copper plate; 41-screw conveyor; 42-motor; 43-magnetron; 61-support frame; 62-mounting head; 63-roller. DETAILED DESCRIPTION

[0017] The present invention will be further described with reference to the accompanying drawings.

[0018] As shown in the figure, the present invention provides a high-efficiency coal powder desulfurization electromagnetic separator: it includes a frame 1, a conveying device 2 is arranged inside the frame 1, a rotating disc magnetic suction device 3 is arranged directly above the conveying device 2, a feed hopper 4 is installed on the outer side of the right end of the frame 1, the feed hopper 4 is located on the upper right side of the conveying device 2, a collecting hopper 5 is installed on the left side of the conveying device 2, the collecting hopper 5 is arranged in a trapezoidal shape, and a paving device 6 is installed at the lower left of the feed hopper 4.

[0019] The conveying device 2 includes a conveying frame 21, a motor 22 is fixedly installed on the left side of the conveying frame 21, and rotating rollers 23 are installed inside the left and right sides of the conveying frame 21. The output shaft of the motor 22 is connected to the rotating roller 23 on the left side of the conveying device 2. A conveyor belt 24 is installed on the conveying frame 21 and the rotating roller 23. The conveyor belt is made of high-temperature ceramic fiber material to withstand high-temperature materials after microwave heating.

[0020] Conical soft iron 31 is neatly arranged on the outside of the rotating disc magnetic attraction device 3, and the conical soft iron is an induction magnetic pole. The distance between the rotating disc magnetic attraction device 3 and the conveying device 2 is less than 10 cm, and a better magnetic attraction effect can be achieved by controlling the distance. The interior of the rotating disc magnetic attraction device 3 is rotatably connected with gear 1 32 and gear 2 33, and the gear 1 32 is located directly above the conveying device 2. A rotating shaft 1 34 is installed on the gear 1 32, and a coil 35 is wound on the rotating shaft 1 34. The magnetic size on the conical soft iron can be changed by controlling the number of coils and the intensity of the current passed. A constant speed motor 36 is installed at the upper end of the rotating shaft 1 34, and the speed of the constant speed motor 36 is controlled to be 5r / s. A rotating shaft 2 37 is installed on the gear 2 33, and the upper end of the rotating shaft 2 37 is connected to a tightening sleeve 38, and the tightening sleeve 38 is directly fixed on the frame 1.

[0021] A collecting bucket 5 is arranged directly below the gear 2 33 on the rotating disk type magnetic attraction device 3 . The collecting bucket 5 is located beside the conveying device 2 . The collecting bucket 5 is arranged in a trapezoidal shape.

[0022] A copper plate 39 is installed under the gear 1 32 and the gear 2 33 on the rotating disc magnetic device 3. The copper plate 39 serves to isolate the magnetism on the gear 1 32 to prevent the magnetic material from being adsorbed on the gear 1 32, but its thickness is much lower than that of the conical soft iron 31. The copper plate 39 is the elliptical shape of the inner circle of the rotating disc magnetic device 3, so that it completely covers the inner circle range of the rotating disc magnetic device 3. The copper plate 39 is located directly above the conveying device 2 and the collecting bucket 5.

[0023] A screw conveyor 41 is installed inside the feed hopper 4, and a motor 42 is installed above the screw rod in the middle of the screw conveyor 41 to ensure that the material can be fully heated. A magnetron 43 is installed in the middle position of the outer side of the feed hopper 4, and the antenna on the magnetron 43 is connected to the inside of the feed hopper 4.

[0024] The paving device 6 includes two support frames 61, which are directly fixedly connected to the frame 1, and the bottom end of the support frame 61 is rotatably connected to a mounting head 62. A roller 63 is installed inside the mounting head 62, and the roller 63 makes the material evenly distributed on the conveyor belt 24, so that the rotating disk magnetic suction device 3 can fully absorb the magnetic material, thereby improving the absorption effect of the process.

[0025] Application examples of the present invention: Example 1 Coal powder heated to 400℃ for adsorption test Turn on all power supplies of the equipment, heat pulverized coal with a particle size of ≤ 0.075 mm at 400°C through a microwave through a feed hopper 4 for 10 minutes, and then evenly distribute the material on the conveyor belt by a paving device 6. Control the speed of the rotating disk magnetic device 3 to 20 r / min, and the speed of the conveyor belt 24 to 10 cm / s. The conical soft iron 31 above the conveyor belt 24 adsorbs the magnetic pyrite in the material through magnetic action, and then the gear on the rotating disk magnetic device 3 transmits it to the top of the collecting hopper 5 to lose its magnetism for unloading. After desulfurization by the equipment, the desulfurization rate of the pulverized coal can reach 49.04%.

[0026] Example 2 Coal powder heated to 500℃ for adsorption test Turn on all power supplies of the equipment, and heat the coal powder with a particle size of ≤ 0.075 mm by microwave at 500°C through the feed hopper 4 for 10 minutes. Then, the flattening device 6 makes the material evenly distributed on the conveyor belt 24. The speed of the rotating disk magnetic suction device 3 is controlled to be 20 r / min, and the speed of the conveyor belt 24 is 10 cm / s. The conical soft iron 31 above the conveyor belt 24 adsorbs the magnetic pyrite in the material through magnetic action, and then the gear on the rotating disk magnetic suction device 3 transmits it to the top of the collecting hopper 5 to lose its magnetism for unloading. After desulfurization by this equipment, the desulfurization rate of the coal powder can reach 56.68%.

[0027] Example 3 Coal powder heated to 600℃ for adsorption test Turn on all power supplies of the equipment, and heat the coal powder with a particle size of ≤ 0.075 mm at 600°C through the feed hopper 4 for 10 minutes. Then, the flattening device 6 evenly distributes the material on the conveyor belt 24, and controls the speed of the rotating disk magnetic device 3 to 20 r / min and the speed of the conveyor belt 24 to 10 cm / s. The conical soft iron 31 above the conveyor belt 24 adsorbs the magnetic pyrite in the material through magnetic action, and then the gear on the rotating disk magnetic device 3 transmits it to the top of the collecting hopper 5 to lose its magnetism for unloading. After desulfurization by the equipment, the desulfurization rate of the coal powder can reach 58.7%.

[0028] Example 4 Coal powder heated to 700℃ for adsorption test Turn on all power supplies of the equipment, and heat the coal powder with a particle size of ≤ 0.075 mm at 700°C through the feed hopper 4 for 10 minutes. Then, the flattening device 6 evenly distributes the material on the conveyor belt, and controls the speed of the rotating disk magnetic device 3 to 20 r / min and the speed of the conveyor belt 24 to 10 cm / s. The conical soft iron 31 above the conveyor belt 24 adsorbs the magnetic pyrite in the material through magnetic action, and then the gear on the rotating disk magnetic device 3 transmits it to the top of the collecting hopper 5 to lose its magnetism for unloading. After desulfurization by the equipment, the desulfurization rate of the coal powder can reach 60.21%.

[0029] Example 5 Coal powder heated to 800℃ for adsorption test Turn on all power supplies of the equipment, and heat the coal powder with a particle size of ≤ 0.075 mm by microwave at 800°C through the feed hopper 4 for 10 minutes. Then, the flattening device 6 makes the material evenly distributed on the conveyor belt 24. The speed of the rotating disk magnetic suction device 3 is controlled to be 20 r / min, and the speed of the conveyor belt 24 is 10 cm / s. The conical soft iron 31 above the conveyor belt 24 adsorbs the magnetic pyrite in the material through magnetic action, and then the gear on the rotating disk magnetic suction device 3 transmits it to the top of the collecting hopper 5 to lose its magnetism for unloading. After desulfurization by this equipment, the desulfurization rate of the coal powder can reach 57.82%.

Claims

1. A highly efficient coal powder desulfurization electromagnetic separation device, characterized in that: The invention comprises a frame (1), a feed hopper (4) is provided at the top of one side of the frame (1), a conveying device (2) is provided below the feed hopper (4), a rotating disc type magnetic attraction device (3) is provided directly above the conveying device (2), and a collecting hopper (5) is provided below the conveying device (2); a screw conveyor (41) is provided inside the feed hopper (4), a motor (42) is provided at the top of the screw conveyor (41), a magnetron (43) is provided in the middle of the outer side of the feed hopper (4), and the antenna of the magnetron (43) is communicated with the inside of the feed hopper (4).

2. A high-efficiency coal powder desulfurization electromagnetic separation device according to claim 1, characterized in that: The conveying device (2) comprises a conveying frame (21), one end of the conveying frame (21) is provided with a motor (22), both ends of the conveying frame (21) are provided with rotating rollers (23), a conveyor belt (24) is provided on the rotating rollers (23), and an output shaft of the motor (22) is connected to the rotating roller (23) at one end.

3. The high-efficiency coal powder desulfurization electromagnetic separation device according to claim 1 is characterized in that: The rotating disk type magnetic attraction device (3) comprises a gear 1 (32) and a gear 2 (33), wherein a plurality of conical soft irons (31) are arranged on the outer sides of the gear 1 (32) and the gear 2 (33), the gear 1 (32) is connected to the frame (1) via a rotating shaft 1 (34), a coil (35) is wound around the rotating shaft 1 (34), a constant speed motor (36) is mounted on the upper end of the rotating shaft 1 (34), and the gear 2 (33) is connected to a tightening sleeve (38) located on the frame (1) via a rotating shaft 2 (37).

4. A high-efficiency coal powder desulfurization electromagnetic separation device according to claim 3, characterized in that: A copper plate (39) is provided below the gear 1 (32) and the gear 2 (33); the thickness of the copper plate (39) is less than the length of the conical soft iron (31); and the copper plate (39) completely covers the inner ring of the rotating disk-type magnetic attraction device (3).

5. The high-efficiency coal powder desulfurization electromagnetic separation device according to claim 1 is characterized in that: The distance between the bottom of the rotating disk-type magnetic attraction device (3) and the conveying device (2) is less than 10 cm.

6. The high-efficiency coal powder desulfurization electromagnetic separation device according to claim 3 is characterized by: The gear one (32) is located directly above the conveying device (2), and the gear two (33) is located directly above the collecting bucket (5).

7. The high-efficiency coal powder desulfurization electromagnetic separation device according to claim 1 is characterized in that: One end of the collecting bucket (5) is arranged in a trapezoidal shape, and the end of the collecting bucket (5) arranged in a trapezoidal shape extends out of the end of the conveying device (2).

8. The high-efficiency coal powder desulfurization electromagnetic separation device according to claim 1 is characterized by: A paving device (6) is provided at the connection end between the frame (1) and the feed hopper (4), and the paving device (6) comprises two support frames (61), one end of the support frame (61) is fixedly connected to the frame (1), and the other end is rotatably connected to a mounting head (62), and a roller (63) is provided inside the mounting head (62).

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