CN216368408U

CN216368408U - Magnetic separation equipment and red mud treatment system

Info

Publication number: CN216368408U
Application number: CN202121197810.2U
Authority: CN
Inventors: 范犇; 黄连洪
Original assignee: Hainan Guangran Environmental Protection Technology Co ltd
Current assignee: Hainan Guangran Environmental Protection Technology Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-04-26
Anticipated expiration: 2031-05-31

Abstract

The utility model relates to a magnetic separation device and a red mud treatment system, wherein the magnetic separation device comprises a rack, a bottom groove and a roller, the bottom groove is arranged on the rack, the roller is arranged in the bottom groove, a magnet group is arranged in the roller, an induction roller and a cleaning device are arranged on the rack, the axial direction of the induction roller is parallel to the axial direction of the roller, and when the induction roller induces that the thickness of ores adsorbed on the circumferential surface of the roller reaches a preset value, the cleaning device is started to clean the ores adsorbed on the circumferential surface of the roller. According to the technical scheme provided by the utility model, the device for identifying the thickness of the ore on the surface of the roller is arranged, so that the consumption of cleaning water is reduced, and the service life of equipment is prolonged.

Description

Magnetic separation equipment and red mud treatment system

Technical Field

The utility model belongs to the technical field of tailing treatment, and particularly relates to magnetic separation equipment and a red mud treatment system.

Background

Magnetic separators have a wide range of applications in the industry and have various designs depending on the application and efficacy. The magnetic body adopted by the existing magnetic separator is roughly divided into permanent magnet and electromagnetism, the adopted magnetic system structural style is roughly divided into a cylinder type, a roller type and a disc type, and the adopted groove body structural style and the adopted ore feeding style are divided into an upper ore feeding mode, a lower ore feeding mode, a forward flow type, a reverse flow type and a semi-reverse flow type. The most common is a permanent magnetic drum type countercurrent magnetic separator, which adopts the following principle: the rotation direction of the permanent magnetic roller (the roller filled with the permanent magnetic material inside) is opposite to the movement direction of the ore pulp, so that the ferromagnetic minerals in the ore pulp are separated.

However, the existing countercurrent magnetic separator usually cannot identify the quantity of ores adsorbed on the surface of the roller, the cleaning mechanism works continuously, the consumption of water for cleaning is large, and the surface of the roller is easy to damage.

SUMMERY OF THE UTILITY MODEL

In order to solve all or part of the problems, the utility model aims to provide magnetic separation equipment which is provided with a roller surface ore thickness identification device, reduces the consumption of cleaning water and prolongs the service life of the equipment.

The utility model also aims to provide a red mud treatment system, and the magnetic separation equipment is installed.

The utility model provides magnetic separation equipment which comprises a rack, a bottom groove and a roller, wherein the bottom groove is arranged on the rack, the roller is arranged in the bottom groove, a magnet group is arranged in the roller, an induction roller and a cleaning device are arranged on the rack, the axial direction of the induction roller is parallel to the axial direction of the roller, and when the induction roller induces that the thickness of ores adsorbed on the circumferential surface of the roller reaches a preset value, the cleaning device is started to clean the ores adsorbed on the circumferential surface of the roller.

Optionally, an electromagnetic induction circuit is arranged in the induction roller, and the thickness of the ore adsorbed on the circumferential surface of the roller is detected in real time.

Optionally, the length of the induction roller is adapted to the length of the drum.

Optionally, the length of the cleaning device is adapted to the length of the drum, and the cleaning device comprises a water spraying device or a steel brush, and is spaced from the circumferential surface of the drum by a preset distance when the cleaning device is not used for cleaning, and the cleaning device moves towards the circumferential surface of the drum when the cleaning device is started.

Optionally, a permanent magnet set is arranged inside the roller, and the permanent magnet set is in a fan shape.

Optionally, an adjusting device is arranged on one axial side of the roller, the adjusting device is connected with the permanent magnet set, and the orientation of the permanent magnet set is adjusted through the adjusting device.

Optionally, the adjusting device includes a screw rod, a connecting rod and a positioning seat, a first end of the connecting rod is connected to the permanent magnet set, a second end of the connecting rod is hinged to the first end of the screw rod, the second end of the screw rod is inserted into the positioning seat, and nuts are disposed on the screw rod on two sides of the positioning seat.

Optionally, the other axial side of the drum is provided with a driving device for driving the drum to rotate.

Optionally, the magnetic separation device has an operating magnetic field strength of no more than 3000 gauss.

The utility model also provides a red mud treatment system, which comprises fine grinding equipment and the magnetic separation equipment, wherein the magnetic separation equipment is arranged at the downstream of the fine grinding equipment, the fine grinding equipment is used for grinding the red mud spherulites, and the magnetic separation equipment is used for carrying out magnetic screening on the ground red mud.

According to the technical scheme, the magnetic separation equipment provided by the utility model has the following advantages:

according to the utility model, the thickness of the ore on the surface of the roller is identified through the induction roller, the cleaning mechanism is discontinuously started, the consumption of cleaning water is reduced, the production cost is reduced, meanwhile, the abrasion on the surface of the roller is weakened, and the service life of equipment is prolonged.

The magnetic separation equipment has stable performance, low failure rate and long service life.

Drawings

FIG. 1 is a front view of a magnetic separation apparatus in an embodiment of the present invention;

FIG. 2 is a left side view of a magnetic separation apparatus in an embodiment of the present invention;

fig. 3 is a schematic composition diagram of a red mud treatment system in an embodiment of the utility model.

Description of reference numerals: 1. a frame; 2. a bottom groove; 3. a drum; 4. a drive device; 5. an adjustment device; 5-1, a screw; 5-2, connecting rod; 5-3, positioning seats; 6. feeding a mine box; 7. an induction roll; 8. provided is a cleaning device.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a magnetic separation device and a red mud treatment system of the present invention are further described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 2, an embodiment 1 of the present invention discloses a magnetic separation device, which includes a frame 1, a bottom tank 2 and a drum 3, wherein the bottom tank 2 is disposed on the frame 1, the drum 3 is disposed in the bottom tank 2, a magnet assembly is disposed in the drum 3, an induction roller 7 and a cleaning device are disposed on the frame 1, an axial direction of the induction roller 7 is parallel to an axial direction of the drum 3, and when the induction roller 7 induces that a thickness of an ore adsorbed on a circumferential surface of the drum 3 reaches a predetermined value, the cleaning device 8 is started to clean the ore adsorbed on the circumferential surface of the drum 3.

The left side of kerve 2 is provided with into ore box 6, and the right side is provided with the discharge gate, and ore (ore pulp) of mixing with water gets into kerve 2 through advancing ore box 6, and the ore of iron magnetic substance is adsorbed to the circumference surface by cylinder 3 in kerve 2, is cleaned the discharge then (through special export discharge) by cleaning device 8, can not pass through discharge gate discharge kerve 2 by absorbent ore to realize the ore screening.

An electromagnetic induction circuit is arranged in the induction roller 7, and the thickness of the ore adsorbed on the circumferential surface of the roller 3 is detected in real time. When the thickness of the ore adsorbed on the circumferential surface of the roller 3 is not smaller than a predetermined value, the cleaning device 8 does not perform cleaning, and only when the thickness of the ore adsorbed on the circumferential surface of the roller 3 reaches the predetermined value, the cleaning device 8 starts cleaning operation, so that the operation of the cleaning device 8 is intermittent.

Preferably, the length of the induction roller 7 is matched with the length of the drum 3, the thickness of ore adsorbed on the circumferential surface of the drum 3 may be uneven, and the cleaning device 8 can be started to clean as long as the thickness of ore at a certain position reaches a preset value, so that the phenomena of overlarge ore thickness and unbalanced rotation on the circumferential surface of the drum 3 are avoided.

The length of the cleaning device 8 is adapted to the length of the drum 3, and includes a water spraying device or a steel brush, and is spaced from the circumferential surface of the drum 3 by a predetermined distance when not cleaning, and the cleaning device 8 moves toward the circumferential surface of the drum 3 when the cleaning device 8 is activated. The water spray device generally comprises a plurality of nozzles arranged along an axial direction, and the steel brush is cylindrical and can rotate around the axial direction.

The cleaning device 8 may be arranged on a swing base, which is driven by a motor. By this design, the ore adsorbed on the circumferential surface of the drum 3 is not affected when the cleaning device 8 does not clean.

A permanent magnet group (not shown) is provided in the drum 3, and the permanent magnet group is in a sector shape. The angle of the permanent magnet group can be selected to be between 100 and 180 degrees.

The axial one side of cylinder 3 is provided with adjusting device 5, and adjusting device 5 connects the permanent magnet group, adjusts the orientation of permanent magnet group through adjusting device 5 to the ore quantity of adjustment cylinder 3 absorption. For example, when the permanent magnet group faces the bottom groove 2 and has more magnet blocks, the roller 3 can adsorb a larger amount of ores, and when the permanent magnet group faces the bottom groove 2 and has less magnet blocks, the roller 3 can adsorb a smaller amount of ores.

Preferably, the adjusting device 5 comprises a screw rod 5-1, a connecting rod 5-2 and a positioning seat 5-3, a first end of the connecting rod 5-2 is connected with the permanent magnet group, a second end of the connecting rod 5-2 is hinged with the first end of the screw rod 5-1, a second end of the screw rod 5-1 is inserted into the positioning seat 5-3, nuts are arranged on two sides of the positioning seat 5-3 on the screw rod 5-1, and the extending length of the screw rod 5-1 can be adjusted through adjusting the positions of the nuts, so that the orientation of the permanent magnet group can be adjusted.

When a permanent magnet group is required to face more magnet blocks in the bottom groove 2, the nut on the right side of the positioning seat 5-3 can be adjusted to move rightwards, the nut on the left side of the positioning seat 5-3 also moves rightwards, so that the screw rod 5-1 extends leftwards, and the permanent magnet group rotates clockwise by a proper angle; when the permanent magnet group is required to face the bottom groove 2 and the number of the magnet blocks is small, the nut on the left side of the positioning seat 5-3 can be adjusted to move leftwards, the nut on the right side of the positioning seat 5-3 also moves leftwards, so that the screw rod 5-1 extends rightwards, and the permanent magnet group rotates anticlockwise by a proper angle.

The other side of the roller 3 in the axial direction is provided with a driving device 4 for driving the roller 3 to rotate. The drive means 4 may comprise an electric motor and a reducer having an output shaft connected to the drum 3 for driving the drum 3 in a clockwise rotation, in opposition to the direction of flow of slurry in the sump 2.

Preferably, the magnetic separation apparatus has an operating magnetic field strength of no greater than 3000 gauss. Through this design, magnetic separation equipment can carry out the low-intensity magnetic separation, improves the ore quality of screening, because the high-intensity magnetic separation is together screened out with non-ferromagnetic ore more easily, and the ore quality is lower.

The magnetic separation equipment of this embodiment discerns cylinder surface ore thickness through the induction roller, and the mechanism is cleaned in intermittent type start-up, has reduced and has cleaned the water consumption, has reduced manufacturing cost, has weakened the wearing and tearing to cylinder surface simultaneously, has prolonged equipment life.

The magnetic separation equipment of this embodiment stable performance, the fault rate is low, long service life.

Example 2

As shown in fig. 3, the embodiment discloses a red mud treatment system, which comprises fine grinding equipment and further comprises the magnetic separation equipment described in embodiment 1, wherein the magnetic separation equipment is arranged at the downstream of the fine grinding equipment, the fine grinding equipment is used for grinding red mud pellets, and the magnetic separation equipment is used for performing magnetic screening on the ground red mud.

By arranging the fine grinding equipment and the magnetic separation equipment in sequence, the iron recovery rate in the red mud can be improved, the resource utilization of the red mud is facilitated, and the efficiency of the red mud treatment process can be improved.

As shown in fig. 3, the red mud treatment system further includes: the device comprises a first drying device, a ball making device, a second drying device, a pre-reduction device, a microwave device, a dealkalization device and a fine grinding device. The red mud ball preparation device comprises a first drying device, a ball preparation device, a second drying device, a pre-reduction device, a microwave device and a dealkalization device, wherein the first drying device is used for heating red mud raw materials, the ball preparation device is used for preparing the red mud raw materials into ball granules, the second drying device is used for heating the red mud ball granules prepared by the ball preparation device, the pre-reduction device uses gas to burn the red mud ball granules to realize primary magnetization, the microwave device is used for carrying out microwave magnetization on the red mud ball granules, and the dealkalization device is used for dealkalizing the red mud ball granules.

The second drying equipment can heat the pellets by using the waste heat of the microwave equipment, so that the efficiency of pellet production can be improved, and the effects of energy conservation and emission reduction can be achieved.

The gas exhausted from the microwave equipment needs to be dedusted by a dedusting device, desulfurized by a desulfurizing device and then exhausted to the atmosphere, so that the environment is not polluted.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the utility model pertains.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a magnetic separation equipment, includes frame, kerve and cylinder, the kerve sets up in the frame, the cylinder sets up in the kerve, be provided with magnet group in the cylinder, its characterized in that, be provided with response roller and cleaning device in the frame, the axial of response roller with the axial direction parallel of cylinder, the response roller senses when the circumference surface adsorption's of cylinder ore thickness reaches the predetermined value, start cleaning device cleans the circumference surface adsorption's of cylinder ore.

2. The magnetic separation apparatus of claim 1, wherein an electromagnetic induction circuit is disposed in the induction roller to detect the thickness of the ore adsorbed on the circumferential surface of the drum in real time.

3. The magnetic separation apparatus of claim 1 wherein the length of the induction rollers is adapted to the length of the drum.

4. The magnetic separation apparatus of claim 1, wherein the length of the cleaning device is adapted to the length of the drum, and comprises a water spraying device or a steel brush, and is spaced from the circumferential surface of the drum by a predetermined distance when not cleaning, and the cleaning device is moved toward the circumferential surface of the drum when the cleaning device is activated.

5. The magnetic separation apparatus of claim 1 wherein the inside of the drum is provided with permanent magnet sets, the permanent magnet sets being in the shape of sectors.

6. The magnetic separation apparatus of claim 5, wherein an adjusting device is disposed on one axial side of the drum, the adjusting device is connected with the permanent magnet set, and the orientation of the permanent magnet set is adjusted by the adjusting device.

7. The magnetic separation equipment according to claim 6, wherein the adjusting device comprises a screw rod, a connecting rod and a positioning seat, a first end of the connecting rod is connected with the permanent magnet set, a second end of the connecting rod is hinged with the first end of the screw rod, the second end of the screw rod is inserted into the positioning seat, and nuts are arranged on the screw rod on two sides of the positioning seat.

8. The magnetic separation apparatus of claim 6 wherein the drum is provided with drive means on the other axial side to drive the drum in rotation.

9. The magnetic separation apparatus of claim 1 wherein the magnetic separation apparatus has an operating magnetic field strength of no more than 3000 gauss.

10. The red mud treatment system is characterized by comprising fine grinding equipment and magnetic separation equipment according to any one of claims 1 to 9, wherein the magnetic separation equipment is arranged at the downstream of the fine grinding equipment, the fine grinding equipment is used for grinding red mud pellets, and the magnetic separation equipment is used for magnetically screening the ground red mud.