CN211636924U

CN211636924U - Dry-type self-discharging magnetic separator

Info

Publication number: CN211636924U
Application number: CN201921983840.9U
Authority: CN
Inventors: 刘伟; 马洪典; 张春梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-10-09
Anticipated expiration: 2029-11-15

Abstract

The utility model relates to the technical field of mineral magnetic separation, in particular to a dry-type self-discharging magnetic separator which comprises a shell, wherein a feed hopper is arranged on the shell, a tailing collecting hopper and a concentrate collecting hopper are arranged at the lower part of the shell, a horizontally placed outer roller is arranged in the shell, a discharging device is arranged in the outer roller, and the discharging device is positioned at one side of the concentrate collecting hopper; the inside of the outer roller and the inner side of the discharging device are provided with the magnetic roller, the feeding direction of the feeding hopper is opposite to the position of the discharging device, the rotating direction of the outer roller is consistent with the feeding direction, the aim is to provide a discharging mode, mineral aggregates on the outer roller can be discharged into the concentrate collecting hopper through the discharging device when the mineral aggregates rotate to one side of the discharging device.

Description

Dry-type self-discharging magnetic separator

Technical Field

The utility model relates to a mineral magnetic separation technical field specifically is a dry-type magnet separator of unloading certainly.

Background

At present, rich iron ore (the grade of raw ore is higher than 20%) is mined out almost completely in China, but a large amount of ultralow poor iron ore (the grade of raw ore is lower than 10%) is stored in China, transportation cost and separation production cost (including power consumption, water consumption, steel consumption and other costs) are inevitably required to be reduced when the ultralow poor iron ore is mined, meanwhile, tailing treatment cost which accounts for about one third of a separation plant is required to be considered, a plurality of factors such as environmental protection and the like are required to be considered, and water resource shortage in northern areas of China causes the ultralow poor iron ore to be mined and faces huge risks.

At present, the development of the ultra-low lean iron ore is required to start from energy conservation and consumption reduction, so that the dry magnetic separator with high performance becomes the primary basis for breaking the restriction factors. The disadvantages of the magnetic separators currently on the market are analyzed as follows:

firstly, magnetizing the wheel. The magnetic system is fixed, the number of pole pairs of the magnetic field N, S is too small, and the belt rotates. The discharging mode of the magnetic roller is that the iron powder falls down after the magnetic attraction is weakened, the mineral powder turns over too few times, the separation effect is poor, the mineral powder easily enters the surface of the magnetic roller, and the magnetic field intensity is reduced.

Secondly, a flat plate type multistage magnetic separator. The magnetic system is fixed and the flat magnetic systems are arranged in a staggered way from top to bottom. The structure can increase the number of magnetic pole pairs, but has high manufacturing cost and large maintenance amount, and iron powder is easy to enter a magnetic system to reduce the magnetic field effect.

And thirdly, an eccentric roller magnetic separator. The magnets are uniformly distributed on the magnetic system roller, the magnetic system and the outer roller are not concentric, and the rotation direction of the outer roller is opposite to that of the magnetic system. The opposite rotation direction increases the mineral powder turning times, is convenient for unloading, but the effective magnetic separation area is greatly reduced, the magnetic separation effect is not ideal, the returned middlings are too many, the circulation quantity is large, and the efficiency is not high.

Disclosure of Invention

In order to solve the problem, the utility model provides a dry-type self-discharging magnetic separator.

In order to achieve the purpose, the technical scheme adopted by the utility model is that the device comprises a shell, wherein a feeding hopper is arranged at the upper part of the shell, a tailing collecting hopper and a concentrate collecting hopper are arranged at the lower part of the shell side by side, a horizontally arranged outer roller is arranged inside the shell, the outer roller is made of a non-magnetic material, the outer roller is connected with a second motor, a discharging device is arranged in the outer roller, the discharging device is positioned at one side of the concentrate collecting hopper, and the discharging device penetrates through the outer roller and is fixedly connected with the shell; a magnetic roller is arranged in the outer roller and positioned on the inner side of the discharging device, the magnetic roller comprises an inner sleeve, a plurality of magnetic poles are uniformly arranged on the outer surface of the inner sleeve along the circumferential direction, and the length of each magnetic pole is consistent with that of the inner sleeve; the inner sleeve is made of magnetic conductive material; the feeding direction of the feeding hopper is opposite to the position of the discharging device, and the rotating direction of the outer roller is consistent with the feeding direction.

Preferably, the discharging device is a discharging arc plate, the discharging arc plate is rotatably connected with the outer roller, and the discharging arc plate is made of a magnetic conductive material.

Preferably, the discharging arc plate is fixedly connected with a fixed sleeve, the fixed sleeve is arranged between the outer roller and the magnetic roller, two ends of the fixed sleeve extend out of the outer roller and are fixedly connected with the shell, the fixed sleeve is rotatably connected with the outer roller, and the fixed sleeve is made of a non-magnetic material.

Preferably, a rotating shaft is arranged in the shell, the rotating shaft penetrates through the axle center of the outer roller and the shaft center of the fixing sleeve and is fixedly connected with the magnetic roller, the fixing sleeve is rotatably connected with the rotating shaft, the rotating shaft is fixedly connected with the first motor, and the rotating direction of the magnetic roller is opposite to that of the outer roller.

Preferably, the magnetic roller is fixedly connected with the fixed sleeve.

Preferably, an angle-adjustable baffle is arranged between the tailing collecting hopper and the concentrate collecting hopper.

Preferably, the material of the outer roller is glass fiber reinforced plastic.

Preferably, the outer roller is connected with the second motor through a chain wheel and a chain.

The utility model discloses an useful part lies in: 1. the discharging device is arranged in the outer roller, so that when the outer roller rotates, mineral aggregate adsorbed on the outer roller is driven to continuously overturn under the action of an alternating magnetic field, the outer roller drives the mineral aggregate to move to one side of the discharging device, the mineral aggregate can be automatically discharged into the concentrate collecting hopper due to the disappearance of magnetic force of the magnetic field, the mineral aggregate on the outer roller can be discharged more thoroughly by discharging through the disappearance of magnetic force of the magnetic field, more concentrates are obtained, and the efficiency is higher; 2. during the magnetic separation, constantly relative rotation through outer roller and magnetism roller can increase the number of times of magnetic separation, also the number of times that the mineral aggregate tumbles on outer roller, can select more concentrates in the short time, improves the efficiency of magnetic separation, and this magnetic separation device simple structure, low in manufacturing cost, the separation effect is superior, is fit for the marketization and uses.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a right side view of the present invention.

In the figure: 1-a feed hopper; 2-a housing; 3-an outer roller; 4-fixing the sleeve; 5-magnetic pole; 6-bearing seat; 7-a tailing collection hopper; 8-a concentrate collection hopper; 9-discharging arc plates; 10-a rotating shaft; 11-an inner sleeve; 12-a baffle plate; 13-a first electric machine; 14-a second electric machine; 15-a chain; 16-chain wheel.

Detailed Description

The utility model relates to a dry-type is from unloading magnet separator, including

shell

2, 2 upper portions of shell set up feeder hopper 1, 2 lower parts of shell set up the tailing side by side and collect fill 7, concentrate collection fill 8, 2 inside outer rollers 3 that the level was placed that are provided with of shell, outer roller 3 is non-magnetic conductive material, the utility model discloses preferred glass steel material, outer roller 3 is connected with second motor 14, and accessible sprocket chain is connected for second motor 14 drives outer roller 3 and rotates, also can set up the gear at second motor output and outer roller 3 and second motor 14's link, drives outer roller 3 through gear engagement and rotates.

A discharging device is arranged in the outer roller 3, the discharging device is positioned on one side of the concentrate collecting hopper 8, and two ends of the discharging device penetrate through the outer roller 3 and are fixedly connected with the shell 2; a magnetic roller is arranged in the outer roller 3 and positioned on the inner side of the discharging device, the magnetic roller comprises an inner sleeve 11, a plurality of magnetic poles 5 are uniformly arranged on the outer surface of the inner sleeve 11 along the circumferential direction, and the length of each magnetic pole 5 is consistent with that of the inner sleeve 11; the inner sleeve 11 is of magnetically conductive material.

Discharge apparatus is for unloading arc board 9, the arc board 9 of unloading rotates with outer roller 3 to be connected, the arc board 9 of unloading is magnetic material, the utility model discloses an arc board 9 of unloading preferably uses 3 ~ 5 thick magnetic conductive plates of 1mm to constitute, and the length of the arc board 9 of unloading is enough to make the mineral aggregate when moving the position of the arc board 9 of unloading, can drop because magnetic force disappears.

As shown in fig. 1-2, the feeding direction of the feeding hopper 1 is opposite to the position of the discharging arc plate 9, i.e. the discharging arc plate 9 is arranged at the left side in fig. 1, and the feeding direction is at the right side in fig. 1; in order to avoid that mineral aggregate can fall to the left side of the figure 1 after feeding, the feeding hole of the feeding hopper 1 needs to exceed the center line of the cross section of the outer roller 3; the direction of rotation of outer roller 3 is unanimous with the direction of feed, and when the direction of feed was unanimous in unanimous with FIG. 1 promptly, outer roller 3 clockwise rotates, and when the direction of feed was opposite in FIG. 1, outer roller anticlockwise rotates, when outer roller 3 rotated, just can drive the mineral aggregate and do decurrent centrifugal motion for the tailing can drop downwards.

The tailing collecting hopper 7 and the concentrate collecting hopper 8 are arranged side by side, and the concentrate collecting hopper 8 is arranged on one side of the discharging arc plate 9, so that concentrate adsorbed on the outer roller 3 can drop in the concentrate collecting hopper 8 when passing through the discharging arc plate 9. The arc board 9 of unloading is the immovable, and when the second motor 14 drove outer roller 3 and rotated promptly, the arc board 9 of unloading keeps in the state of immobility to make outer roller 3 drive the mineral aggregate that adsorbs on it constantly move the position of unloading arc board 9 place, and drop in concentrate collection fill 8.

The magnetic roller is positioned in the outer roller 3 and on the inner side of the discharging device, a plurality of groups of magnetic poles are fixedly connected with the inner sleeve 11 through bolts, the magnetic poles are alternately arranged according to N poles and S levels, the number of the magnetic poles is even, and mineral aggregates can be always adsorbed on the outer roller 3 due to the fact that the magnetic poles continuously generate magnetic force.

The arc board 9 of unloading and fixed sleeve 4 fixed connection, the arc board 9 of unloading can direct fixed connection on fixed sleeve 4 surface, also can inlay in fixed sleeve 4 for the arc board 9 surface of unloading flushes with fixed sleeve 4's surface. The fixed sleeve 4 is arranged between the outer roller 3 and the magnetic roller and is away from the outer roller 3 and the magnetic roller by a certain distance, so that friction is avoided; the outer roller 3 and the shell 2 are fixedly connected with each other at two ends of the fixed sleeve 4, as shown in fig. 2, the two ends of the fixed sleeve 4 can be set to be connected ends with diameters smaller than that of the fixed sleeve 4, the bearing seat 6 is fixedly connected with the shell 2, the bearing seat 6 can support the fixed sleeve 4, the fixed sleeve 4 is rotatably connected with the outer roller 3 through a bearing, and the fixed sleeve 4 is made of a non-magnetic material.

Set up pivot 10 in the shell 2, the axle center and the magnetism roller fixed connection of outer roller 3, fixed sleeve 4 are passed to pivot 10, the magnetism roller is coaxial with outer roller 3, fixed sleeve 4 passes through the bearing rotation with pivot 10 and is connected, pivot 10 and first motor 13 fixed connection, the rotation opposite direction of magnetism roller and outer roller 3. When the first motor 13 drives the rotating shaft 10 to rotate, the fixed sleeve 4 is kept still; the rotation direction of the magnetic roller is opposite to that of the outer roller 3, and as can be seen from fig. 1, when the outer roller 3 rotates clockwise, mineral aggregate is driven to move downwards and move centrifugally, and tailings (which are not adsorbed) are thrown into the tailing collecting hopper 7.

Another embodiment of the present invention is that the magnetic roller is fixedly connected with the fixing sleeve 4. I.e. the magnetic roller is kept in a non-rotating state, and the concentrate adsorbed on the outer roller 3 is discharged into the concentrate collecting hopper 8 only by the continuous rotation of the outer roller 3.

An angle-adjustable baffle 12 is arranged between the tailing collecting hopper 7 and the concentrate collecting hopper 8. Through adjusting the angle of baffle 12, can increase or reduce the import size that the concentrate was collected and is fought 8, and then control the grade of ore dressing, when the higher mineral aggregate of grade was elected to needs, only need adjusting baffle 12 to reduce the import size that the concentrate was collected and is fought 8, can elect the higher mineral aggregate of grade.

The specific working mode is as follows: mineral aggregate enters the shell 2 from the feed hopper 1, at the moment, the outer roller 3 rotates clockwise, the magnetic roller rotates anticlockwise, the mineral aggregate does centrifugal motion around the outer roller 3 continuously, magnetic mineral powder is adsorbed on the outer surface of the outer roller 3, the mineral powder moves along the outer surface of the outer roller 3 under the action of an alternating magnetic field and friction force, the mineral powder is overturned continuously under the action of the alternating magnetic field, and the mineral powder without magnetism is discharged and falls into a tailing collecting hopper 7 below due to the action of the centrifugal force and self-gravity force; when the outer roller 3 rotates to the position of the discharging device, the magnetic force disappears, and the mineral powder adsorbed on the outer roller 3 falls into the concentrate collecting hopper 8. The grades of the tailings and the concentrates can be adjusted by adjusting the rotating speeds of the outer roller 3 and the magnetic roller.

The above embodiments are preferred embodiments, it should be noted that the above preferred embodiments should not be considered as limitations of the present invention, and the scope of the present invention should be limited by the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims

1. The utility model provides a dry-type is from unloading magnet separator, includes shell (2), shell (2) upper portion sets up feeder hopper (1), shell (2) lower part sets up tailing side by side and collects fill (7), concentrate collection fill (8), its characterized in that: the horizontal outer roller (3) is arranged in the shell (2), the outer roller (3) is made of a non-magnetic material, the outer roller (3) is connected with a second motor (14), a discharging device is arranged in the outer roller (3), the discharging device is positioned on one side of the concentrate collecting hopper (8), and the discharging device penetrates through the outer roller (3) and is fixedly connected with the shell (2); a magnetic roller is arranged in the outer roller (3) and positioned on the inner side of the discharging device, the magnetic roller comprises an inner sleeve (11), a plurality of magnetic poles (5) are uniformly arranged on the outer surface of the inner sleeve (11) along the circumferential direction, and the lengths of the magnetic poles (5) are consistent with the length of the inner sleeve (11); the inner sleeve (11) is made of magnetic conductive material; the feeding direction of the feeding hopper (1) is opposite to the position of the discharging device, and the rotating direction of the outer roller (3) is consistent with the feeding direction.

2. The dry self-discharging magnetic separator as recited in claim 1, wherein: the discharging device is a discharging arc plate (9), the discharging arc plate (9) is rotatably connected with the outer roller (3), and the discharging arc plate (9) is made of a magnetic conductive material.

3. The dry self-discharging magnetic separator according to claim 2, wherein: the discharging arc plate (9) is fixedly connected with the fixed sleeve (4), the fixed sleeve (4) is arranged between the outer roller (3) and the magnetic roller, the two ends of the fixed sleeve (4) extend out of the outer roller (3) and the shell (2) and are fixedly connected with each other, the fixed sleeve (4) is rotatably connected with the outer roller (3), and the fixed sleeve (4) is made of a non-magnetic material.

4. The dry self-discharging magnetic separator as recited in claim 3, wherein: set up pivot (10) in shell (2), the axle center and the magnetism roller fixed connection of outer roller (3), fixed sleeve (4) are passed in pivot (10), fixed sleeve (4) rotate with pivot (10) and are connected, pivot (10) and first motor (13) fixed connection, the rotation opposite direction of magnetism roller and outer roller (3).

5. The dry self-discharging magnetic separator as recited in claim 3, wherein: the magnetic roller is fixedly connected with the fixed sleeve (4).

6. The dry self-discharging magnetic separator as recited in claim 1, wherein: and a baffle (12) with adjustable angle is arranged between the tailing collecting hopper (7) and the concentrate collecting hopper (8).

7. The dry self-discharging magnetic separator as recited in claim 1, wherein: the outer roller (3) is made of glass fiber reinforced plastics.

8. The dry self-discharging magnetic separator as recited in claim 1, wherein: the outer roller (3) is connected with a second motor (14) through a chain wheel and a chain.