CN204724319U - Combined magnetic iron ore dry type throws tail machine - Google Patents

Abstract

The utility model relates to a combined magnetite dry tail throwing machine. The feeding bin 1 is located at the front upper end of the frame 17. The upper ore conveyor 7 and the lower ore conveyor 14 are arranged inside the frame 17 from top to bottom. For the unloading belt of the ore conveyor 7, the upper part of the belt support roller 5 is provided with a combined strong magnet 4 and a combined weak magnet 8 respectively, and the lower ore conveyor 14 is provided with a belt idler 16 and is attached to the lower ore conveyor. 14 feeding belt, the rear end of the lower conveyor 14 is provided with a magnetic pulley 13, the lower part of the magnetic pulley 13 is provided with a second selection ore bin 12, and the second selection tailings bin 11 is arranged in turn from front to back behind the second selection ore bin 12 And the second concentrate bin 10, there is a magnetic drum 2 at the rear and lower part of the feeding bin 1, and the tailings bin 18 and the distribution bin 3 are respectively arranged under the magnetic drum 2, and between the combined strong magnet 4 and the combined weak magnet 8 A belt roller 6 is provided, and a vibration roller 15 is arranged directly below the combined strong magnet 4 and is positioned at the bottom of the feeding belt of the lower ore conveyor 14 . The utility model has the advantages of large processing capacity, high rejection rate, high concentrate grade, high recovery rate and low inclusion rate.

Description

Combined magnetite dry tail throwing machine

technical field

The utility model belongs to the technical field of dry magnetic separators, in particular to a combined magnetite dry tail throwing machine.

Background technique

With the continuous increase of demand for refined iron powder by domestic iron and steel enterprises, the development and utilization of low-grade iron ore is becoming more and more important, especially the development and utilization of lean magnetite that is easy to select, and even the development and utilization of ultra-lean magnetite. develop and use. The raw iron ore is crushed and transported to the concentrator for beneficiation. Before the iron ore is beneficiated, it must be ground first. If the grade of the ore to be ground is not high, it will directly lead to grinding energy consumption and steel consumption. Higher, and the transportation cost of raw ore has also increased. Lean magnetite ore has a low grade of total iron, so lean iron ore should be discarded in advance before it goes into the mill. Now most lean magnetite mining plants use magnetic pulley belt conveyors for dry waste, and some lean magnetite Mining plants use suspension magnetic separators for scrapping. Using a magnetic pulley belt conveyor for waste, the inclusion is serious, and the recovery rate of the magnetic iron is low; for the process of the suspension magnetic separator, the recovery rate of the magnetic iron increases, but the vibration of the conveyor belt is not strong enough, The magnetic field is continuous and the material layer is thick, and there is still a certain amount of inclusions. If the thickness of the material layer is reduced, the processing capacity will be reduced.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages and provide a combined magnetite dry tailing thrower with large processing capacity, high discarding rate, high concentrate grade, high recovery rate and low inclusion rate.

In order to achieve the above object, the technical solution adopted in the utility model is:

Combined magnetite dry tailing throwing machine, the feeding bin is located at the front upper end of the frame, and there is a magnetic drum at the rear and lower part of the feeding bin. There are a tailings bin and a distribution bin at the bottom of the magnetic drum, and the inside of the rack is from top to bottom. There is an upper ore conveyor and a lower ore conveyor below. The upper ore conveyor is equipped with an upper support roller on the belt and is close to the unloading belt of the upper ore conveyor. Combined weak magnet, there is a certain distance between the combined strong magnet and the combined weak magnet, and there is a belt roller, and the belt roller is installed inside the lower conveyor, which is close to the feeding belt of the lower conveyor, combined There is a vibrating roller directly under the strong magnet and it is located at the lower part of the feeding belt of the lower conveyor. The rear end of the lower conveyor is equipped with a magnetic pulley, and the lower part of the magnetic pulley is equipped with a second selection bin. There are two tailing bins and a second bin for concentrate, and there is a seat at the lower end of the frame.

The magnetic drum is cylindrical, and a permanent magnet is fixed on the inner front half, and the permanent magnet does not rotate with the magnetic drum.

The supporting rollers on the belt and the belt supporting rollers are round rollers, and the lengths are slightly smaller than the width of the belt.

The vibrating roller is composed of rollers and roller frames, the angle between the roller frames is 120°, the rollers are in the shape of cylindrical rollers, and the number of vibrating rollers is 2, 3, or more.

Both the combined strong magnet and the combined weak magnet are cuboid magnets composed of cuboid permanent magnets, the width of which is slightly smaller than the width of the unloading belt of the upper ore conveyor, and the length is slightly less than three times the length of the unloading belt of the upper ore conveyor. One-fifth of the distance between the combined strong magnet and the combined weak magnet is slightly greater than one-fifth of the length of the discharge belt of the upper ore conveyor. The magnetic properties of the combined strong magnet are higher than that of the combined weak magnet, and the combined strong magnet and The magnetic pole directions of the combined weak magnets are all perpendicular to the horizontal direction.

The belt passing roller is composed of three round rollers, and the size and shape requirements are the same as those of the supporting roller and the belt supporting roller on the belt.

When the utility model is in use, start the motor, drive the magnetic drum, the upper ore feeder, the lower ore feeder and the vibrating roller to rotate, and feed the finely crushed magnetite ore into the feeding bin. Under the action of the rotation of the magnetic drum, a large number of pulses A large amount of magnetite and a small amount of magnetite enter the tailings bin and are discharged, a large amount of magnetite and a small amount of gangue become coarse concentrate and enter the distribution bin, and the coarse concentrate flows out from the lower end of the distribution bin and is evenly spread on the belt of the lower conveyor. Due to the pre-scrap of the magnetic drum, the material layer on the belt is thinner.

The coarse ore concentrate moves backward under the rotation of the lower ore conveyor. When it moves to the upper part of the vibrating roller, because the vibrating roller intermittently hits the feeding belt of the lower ore conveyor, the coarse ore concentrate is continuously loosened, and the magnetite Under the action of the magnetic field force of the combined strong magnet, it moves upwards and is adsorbed on the unloading belt of the upper ore conveyor, and moves backward together with the unloading belt of the upper ore conveyor.

The magnetite is adsorbed on the unloading belt of the upper ore conveyor, and when it moves to the area below the pulley, due to the extremely weak magnetism of the area below the pulley, the magnetite falls on the surface of the material layer, and the mixed gangue and magnet Mine is further loosened.

The coarse concentrate continues to move backward under the rotation of the lower conveyor, and when it moves to the lower part of the combined weak magnet, because the magnetism is weaker than that of the lower part of the combined strong magnet, the loose magnetite moves upward again under the action of the magnetic field force And adsorbed on the unloading belt of the upper ore conveyor, and move backward together with the unloading belt of the upper ore conveyor. When the magnetic field force on the magnetite is less than gravity, the magnetite will fall off the belt and fall into the secondary concentrator. mine warehouse.

When the magnetite and gangue on the feeding belt of the lower conveyor move backward to the magnetic pulley, the magnetite will fall into the second selection bin under the action of the magnetic field force, and the gangue will be thrown into the second selection tailing bin.

The utility model has the advantages of large processing capacity, high discarding rate, high concentrate grade, high recovery rate and low inclusion rate.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the vibration roller in Fig. 1 .

In the figure: 1. Feed bin; 2. Magnetic roller; 3. Cloth bin; 4. Combined strong magnet; 5. Belt support roller; 6. Belt roller; 7. Upper conveyor; 8. Combined Weak magnet; 9. machine base; 10. second concentrate bin; 11. second tailing bin; 12. second bin; 13. magnetic pulley; 14. lower conveyor; 15. vibration roller; 16. Belt idler; 17. Rack; 18. Tailings bin; 19. Roller; 20. Roller stand.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1, the combined magnetite dry-type tail throwing machine includes a frame 17; the lower end of the frame 17 has a seat 9, and the feeding bin 1 is located at the front upper end of the frame 17, and the inside of the frame 17 is arranged from top to bottom. There are an upper ore conveyor 7 and a lower ore conveyor 14. The upper ore conveyor 7 is equipped with an upper belt support roller 5 and is close to the lower material belt of the upper ore conveyor 7. The upper and lower belt support rollers 5 are respectively provided with combined type strong magnet 4 and combined weak magnet 8, the inside of the lower ore conveyor 14 is provided with a belt idler 16 and is close to the feeding belt of the lower ore conveyor 14, and the lower ore conveyor 14 rear end is provided with a magnetic pulley 13, and the magnet The lower part of the pulley 13 is provided with the second ore selection bin 12, and the rear of the second selection ore bin 12 is provided with the second selection tailings bin 11 and the second selection concentrate bin 10 from front to back. The tailings bin 18 and the cloth bin 3 are respectively arranged at the front and rear of the bottom of the drum 2, a belt roller 6 is arranged between the combined strong magnet 4 and the combined weak magnet 8, and a vibrating roller 15 is arranged directly under the combined strong magnet 4 and It is located at the lower part of the feeding belt of the lower conveyor 14.

The magnetic drum 2 is cylindrical, with a permanent magnet fixed on the front half of the interior, and the permanent magnet does not rotate with the magnetic drum 2; the belt upper support roller 5 and the belt idler 16 are round rollers, and the length is slightly smaller than the belt width. ; The combined strong magnet 4 and the combined weak magnet 8 are cuboid magnets combined with cuboid permanent magnets, the width of which is slightly smaller than the width of the upper ore conveyor 7 lower belts, and the length is slightly smaller than that of the upper ore conveyor 7 1/3 of the length of the material belt, the distance between the combined strong magnet 4 and the combined weak magnet 8 is slightly greater than 1/5 of the length of the material belt of the upper ore conveyor 7, and the magnetic properties of the combined strong magnet 4 are higher than that of the combined Weak magnet 8, and the magnetic pole directions of the combined strong magnet and the combined weak magnet are all perpendicular to the horizontal direction; the belt roller 6 is combined with three round rollers, and the size and shape requirements are the same as those of the supporting roller 5 and the belt holder on the belt. Roller 16 is the same.

As shown in Figure 2, described vibration roller 15 is made up of roller 19 and roller frame 20, and the included angle between roller frame 20 is 120 °, and roller 19 is cylindrical roller shape, and the number of vibration roller 15 is greater than or equal to 2, can be 2 One, three, or more.

When the utility model is in use, start the motor, drive the magnetic drum 2, the upper ore feeder 7, the lower ore feeder 14 and the vibrating roller 15 to rotate, feed the finely crushed magnetite ore into the feed bin 1, and rotate the magnetic drum 2 A large amount of gangue and a small amount of magnetite enter the tailings bin 18 and are discharged, a large amount of magnetite and a small amount of gangue become rough concentrate and enter the distribution bin 3, and the coarse concentrate flows out from the lower end of the distribution bin 3 and is evenly distributed. Lay on the belt of lower ore conveyor 14, because the magnetic drum 2 is discarded in advance, the material layer on the belt is thinner.

The coarse ore concentrate moves backward under the rotation of the lower ore conveyor 14. When it moves to the upper part of the vibrating roller 15, the coarse ore concentrate is continuously loosened due to the intermittent knocking of the vibrating roller 15 on the feeding belt of the lower ore conveyor 14. , The magnetite moves upward under the action of the combined strong magnet 4 magnetic field force and is adsorbed on the blanking belt of the upper ore conveyor 7, and moves backward together with the blanking belt of the upper ore conveyor 7.

The magnetite is adsorbed on the unloading belt of the upper ore conveyor 7, and when it moves to the area below the pulley 6, due to the extremely weak magnetism in the area below the pulley 6, the magnetite falls on the surface of the material layer, and the mixed veins Stone and magnetite are further loosened.

The coarse concentrate continues to move backward under the rotation of the lower conveyor 14. When it moves to the lower part of the combined weak magnet 8, because the magnetism is weaker than that of the lower part of the combined strong magnet 4, the loose magnetite will be released again under the action of the magnetic field force. Move upwards once and be adsorbed on the unloading belt of the upper ore conveyor 7, and move backward together with the unloading belt of the upper ore conveyor 7. When the magnetic field force on the magnetite is less than gravity, the magnetite will break away from the belt Fall into the second concentrate ore bin 10.

When the magnetite and gangue on the feeding belt of the lower conveyor 14 move backward to the magnetic pulley 13, the magnetite falls into the secondary selection bin 12 under the action of the magnetic field force, and the gangue is thrown into the secondary selection tailings Bin 11.

Claims (6)

1. combined magnetic iron ore dry type throws tail machine, comprises frame (17), frame (17) lower end organic block (9), feed hopper (1) is positioned at frame (17) front upper end, frame (17) inside is provided with chute (7) and lower chute (14) from top to bottom, upper chute (7) inside is provided with belt upper backup roll (5) and is adjacent to the lower material strip of chute (7), combined type kicker magnet (4) and combined type weak magnet (8) is respectively equipped with before and after belt upper backup roll (5) top, lower chute (14) inside is provided with belt roller (16) and is adjacent to the upper material strip of lower chute (14), lower chute (14) rear end is provided with magnetic pulley (13), magnetic pulley (13) bottom is provided with two and chooses ore storage bin (12), two choose ore storage bin (12), and being provided with two from front to back successively selects tailing bin (11) and two concentrate selection storehouses (10) below, it is characterized in that feed hopper (1) rear lower has magnet drum (2), be respectively equipped with before and after magnet drum (2) below and select tailing bin (18) and distribution cabins (3), leather belt roller (6) was provided with between combined type kicker magnet (4) and combined type weak magnet (8), be provided with vibrating roller (15) immediately below combined type kicker magnet (4) and be positioned at the upper material strip bottom of lower chute (14).

2. combined magnetic iron ore dry type according to claim 1 throws tail machine, and it is characterized in that described magnet drum (2) is for cylindric, inner first half is fixed with permanent magnet.

3. combined magnetic iron ore dry type according to claim 1 throws tail machine, it is characterized in that described belt upper backup roll (5) and belt roller (16) are round-shaped.

4. combined magnetic iron ore dry type according to claim 1 throws tail machine, it is characterized in that vibrating roller (15) is made up of roller (19) and roll stand (20), between roll stand (20), angle is 120 °, and roller (19) is cylinder roll, and vibrating roller (15) number is more than or equal to 2.

5. combined magnetic iron ore dry type according to claim 1 throws tail machine, it is characterized in that described combined type kicker magnet (4) and combined type weak magnet (8) are cuboid magnet, combined type kicker magnet (4) is all vertical with horizontal direction with the pole orientation of combined type weak magnet (8).

6. combined magnetic iron ore dry type according to claim 1 throws tail machine, it is characterized in that described leather belt roller (6) of crossing is combined by three round rollers.