CN113414005A

CN113414005A - Pulse periodic magnetic separator

Info

Publication number: CN113414005A
Application number: CN202110900712.9A
Authority: CN
Inventors: 陈龙; 杨招君; 徐晓衣; 王丰雨; 陈俊明; 许丽敏; 王丽娟; 钟森林; 梁焘茂; 王威; 谢宝华
Original assignee: Guangzhou Yueyou Academy Mineral Resource Technology Co ltd; Institute of Resource Utilization and Rare Earth Development of Guangdong Academy of Sciences
Current assignee: Guangzhou Yueyou Academy Mineral Resource Technology Co ltd; Institute of Resource Utilization and Rare Earth Development of Guangdong Academy of Sciences
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2021-09-21

Abstract

The invention relates to a pulse periodic magnetic separator which comprises a pulse device, a frame, a pipeline system and a magnetic system device, wherein the magnetic system device comprises a cylinder body, an upper magnetic pole head and a lower magnetic pole head which are hermetically arranged at two ends of the cylinder body, the magnetic system device also comprises a coil device, a separation space is formed by an inner cavity of the cylinder body and an area enclosed between the upper magnetic pole head and the lower magnetic pole head, a magnetic medium is arranged in the separation space, fluid channels connected with the separation space are respectively arranged on the upper magnetic pole head and the lower magnetic pole head, the pipeline system comprises an upper pipeline device and a lower pipeline device, the upper pipeline device is used for respectively and independently introducing ore pulp and water into the fluid channels of the upper magnetic pole head, the lower pipeline device is used for respectively and independently discharging magnetic substances and non-magnetic substances, a tailing hopper is arranged at the lower part of the magnetic system device, and the pulse device is connected with the tailing hopper through a tympanic membrane. The invention provides a pulse periodic magnetic separator which has uniform magnetic field distribution and is not easy to block magnetic medium, and the magnetic separator can be used for purifying metal ores.

Description

Pulse periodic magnetic separator

Technical Field

The invention relates to a pulse periodic magnetic separator in the technical field of magnetic separation mineral separation equipment.

Background

The magnetic separator is one of the machines which are widely used in the industry and have high universality, is suitable for separating substances with magnetic differences, can be applied to the industries such as mining industry, chemistry, food and the like, and is particularly widely applied to the field of mining industry.

Magnetic separation is the most common, economical and effective method for processing weakly magnetic minerals, and the existing magnetic separation technology has the problems of low separation rate of equipment, complex process, difficulty in recovering micro-fine particle minerals and the like. The magnetic separation equipment for metal ore purification on the market at present mainly comprises a continuous high-gradient magnetic separator, a cylindrical magnetic separator and the like, the continuous high-gradient magnetic separator comprises a flat ring type magnetic separator and a vertical ring type magnetic separator, the continuous high-gradient magnetic separator realizes the separation of magazines by a rotating separation ring, the effective separation space is lower, the magnetic field distribution is uneven, and the problem of abrupt drop of the magnetic field gradient at the edge position exists, so that the medium is easy to block. The magnetic field intensity of the drum magnetic separator cannot be adjusted, and the sorting index is poor, so the drum magnetic separator cannot be used for sorting. The traditional pulse periodic magnetic separator is only applied to the aspect of impurity removal of nonmetallic ores, is only suitable for processing fine materials with low magnetic component content, and if the magnetic content is high and the mineral particles are coarse, the materials are easy to deposit, the magnetic medium is blocked, and the separation effect is influenced.

Disclosure of Invention

The invention aims to provide a pulse periodic magnetic separator which has uniform magnetic field distribution and is not easy to block magnetic objects.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a pulsating periodic magnetic separator comprises a frame and a pipeline system, wherein a magnetic system device and a pulsating device are arranged on the frame, the magnetic system device comprises a cylinder body, an upper magnetic pole head and a lower magnetic pole head, the upper magnetic pole head is hermetically arranged at the upper end of the cylinder body, the lower magnetic pole head is hermetically arranged at the lower end of the cylinder body, the coil device comprises a coil which is annularly arranged on the periphery of the cylinder body, a separation space is formed by an inner cavity of the cylinder body and a region enclosed between the upper magnetic pole head and the lower magnetic pole head, a magnetic medium is arranged in the separation space, fluid channels connected with the separation space are respectively arranged on the upper magnetic pole head and the lower magnetic pole head, the pipeline system comprises an upper pipeline device connected with the fluid channel on the upper magnetic pole head and a lower pipeline device connected with the fluid channel of the lower magnetic pole head, the upper pipeline device is used for respectively and independently introducing ore pulp and water into the fluid channel of the upper magnetic pole head, and the lower pipeline device is used for respectively and independently discharging magnetic substances and non-magnetic substances, the lower part of the magnetic system device is provided with a tailing bucket, and the pulsation device is connected with the tailing bucket through a tympanic membrane.

Furthermore, the magnetic system device also comprises an upper magnetic pole plate connected with the upper magnetic pole head and a lower magnetic pole plate connected with the lower magnetic pole head, and a magnetic system frame connected between the upper magnetic pole plate and the lower magnetic pole plate is arranged on the periphery of the coil device.

Further, the coil device further comprises a coil box body and a coil outlet cover, and the coil is arranged in the coil box body.

Furthermore, a medium hoisting piece is arranged in the separation space, the medium hoisting piece comprises a hoisting rod positioned in the middle, the medium hoisting piece comprises a hoisting frame fixed at the lower end of the hoisting rod, and the magnetic medium is fixed on the hoisting frame.

Furthermore, the lifting frame comprises a plurality of radial spokes which are radially distributed by taking the lifting rod as the center, and at least two rings of lifting rings fixed on the radial spokes.

Furthermore, the cylinder is vertically arranged, and the lower end face of the upper magnetic pole head and the upper end face of the lower magnetic pole head are arranged up and down oppositely.

Furthermore, go up the magnetic pole head and include magnetic pole head body and the magnetic pole head framework that links to each other with the magnetic pole head body, fluid passage sets up on the magnetic pole head body, is provided with the overflow mouth in the magnetic pole head framework, and the upper end of magnetic pole head framework is provided with the upper cover, covers on and is provided with the ore separator, and upside pipe-line installation links to each other with the upper cover.

Further, the upper side pipeline device comprises a water inlet three-way pipe, one pipe orifice of the water inlet three-way pipe is connected with a slurry inlet water inlet bent pipe, the other pipe orifice of the water inlet three-way pipe is provided with a water inlet valve, the other pipe orifice of the water inlet three-way pipe is connected with a slurry inlet backflow three-way pipe, a slurry inlet valve is arranged between the slurry inlet backflow three-way pipe and the water inlet three-way pipe, and a backflow valve is arranged at the other pipe orifice of the slurry inlet backflow three-way pipe.

Furthermore, the lower side pipeline device comprises a four-way pipe, one pipe orifice of the four-way pipe is connected with the fluid channel of the lower magnetic pole head, and the other three pipe orifices are respectively provided with a concentrate valve, a slurry return valve and a tailing valve.

The invention has the beneficial effects that: in the invention, when the coil of the coil device is electrified, the separation space positioned at the inner side of the coil can form a stable and uniform magnetic field, when the magnetic medium positioned in the separation space can generate high-gradient induced magnetic field magnetic separation operation, the pulsation device works and can generate pulsation force, so that ore pulp in the tailing bucket is blasted and is conducted into the separation space, the generated pulsation fluid force enables the ore pulp in the separation space to be in a loose state, magnetic substances in the ore pulp can be fully adsorbed on the surface of the magnetic medium, and non-magnetic substances flow out through the lower side pipeline device; when the magnetic medium is fully absorbed with magnetic substances, the coil is powered off, the upper pipeline device injects mineral unloading water into the separation space, the mineral unloading water washes the magnetic substances absorbed on the surface of the magnetic medium, and the mineral unloading water flows out through the lower pipeline device to form concentrate, so that the quick and effective mineral unloading is realized.

Drawings

FIG. 1 is a schematic diagram of the construction of one embodiment of a pulsed periodic magnetic separator according to the present invention;

FIG. 2 is a perspective view of FIG. 1;

FIG. 3 is a schematic view of the magnetic system apparatus and the top cover of FIG. 1;

FIG. 4 is a schematic view of the coil assembly of FIG. 1;

FIG. 5 is a schematic view of the magnetic system frame of FIG. 1;

FIG. 6 is a schematic structural view of the ore separator of FIG. 1;

FIG. 7 is a schematic view of the structure of the upper cover of FIG. 1;

FIG. 8 is a schematic structural view of the upper pole head of FIG. 1;

FIG. 9 is a schematic view of the cartridge of FIG. 1;

FIG. 10 is a schematic view of the pulsation mechanism of FIG. 1 engaged with a tailing hopper;

FIG. 11 is a schematic view showing the structure of the upper pipe means in FIG. 1;

FIG. 12 is a schematic view of the construction of the lower side duct assembly of FIG. 1;

FIG. 13 is a schematic view of the construction of the media sling of FIG. 1;

1. an upper side piping device; 2. a mineral separator; 3. a magnetic medium; 4. a coil; 5. a lower magnetic pole head; 6. a tailing bucket; 7. a tympanic membrane; 8. a pulsation mechanism; 9. a frame; 10. a lower side piping device; 11. an upper magnetic pole head; 12. an upper magnetic pole plate; 13. a lower magnetic pole plate; 14. a fluid channel; 15. a magnetic system frame; 16. a lower magnetic pole plate; 17. a media sling; 18. a magnetic pole head frame; 19. an upper cover; 20. a positioning member; 21. a lower magnetic pole flange; 22. a barrel; 23. a sorting space; 24. a coil box body; 25. the coil is taken out of the mask; 26. an overflow port; 27. a tympanic membrane; 28. a motor; 29. a water inlet three-way pipe; 30. a slurry inlet water inlet bent pipe; 31. a water inlet valve; 32. a slurry inlet valve; 33. a reflux valve; 34. a slurry inlet backflow tee joint; 35. a support frame; 36. a slurry return valve; 37. a tailings valve; 38. a manual valve; 39. a concentrate valve; 40. a four-way pipe; 41. a boom; 42. radial spokes; 43. and (4) hanging a ring.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The embodiment of the pulse periodic magnetic separator in the invention is shown in figures 1-13: comprises a frame 9, a magnetic system device, a coil device, a pulsation mechanism 8, a pipeline system, a control component and the like.

The magnetic system device is fixed on the frame 9 and comprises a cylinder 22 with a square frame structure, the cylinder 22 is formed by welding stainless steel plates, and the cylinder 22 is vertically arranged. The magnetic system device further comprises an upper magnetic pole head 11 arranged at the upper end of the cylinder in a sealing mode and a lower magnetic pole head 5 arranged at the lower end of the cylinder in a sealing mode, the upper magnetic pole head 11 and the lower magnetic pole head 5 are made of industrial pure iron, and the lower end face of the upper magnetic pole head 11 is arranged opposite to the upper end face of the lower magnetic pole head 5. The magnetic system device also comprises a coil device, the coil device comprises a coil box body 24 and a coil 4 which are annularly arranged on the periphery of the barrel, the coil 4 is arranged in the coil box body 24, a coil outlet cover 25 is arranged at the position of the coil, which is led out of the coil box body, and the outlet of the coil is sealed.

A separation space 23 is formed between the upper magnetic pole head and the lower magnetic pole head in the inner cavity of the cylinder, a medium hoisting piece 17 is arranged in the separation space 23, a magnetic medium 3 is arranged on the medium hoisting piece, and in the embodiment, the magnetic medium 3 is made of a magnetic conductive material of a sheet net (or a rod shape, a steel wool shape and the like). The medium hanger 17 includes a hanger 41 and a hanger frame fixed to a lower end of the hanger, and the magnetic medium is fixed to the hanger frame. The lifting frame comprises a plurality of radial spokes 42 which are radially distributed by taking the lifting rod as the center, and two rings of lifting rings 43 fixed on the radial spokes.

When the coil 4 is electrified with direct current, the magnetic system device can continuously generate a magnetic field which vertically penetrates through a magnetic medium in a separation space formed between the upper magnetic pole head 11 and the lower magnetic pole head 5, and the magnetic field intensity can be adjusted by changing the number of turns of the coil or the current. The coil is made of pure copper or aluminum material by winding in the same direction, insulation material is arranged between turns of the coil at intervals, and the cooling mode of the coil adopts water cooling (or oil cooling).

The upper magnetic pole head and the lower magnetic pole head are both provided with fluid channels 14 connected with the separation space 23, the fluid channels 14 are formed by through holes (or gaps), and the ore pulp and the ore discharging water can flow through the fluid channels. The magnetic system device also comprises an upper magnetic pole plate 12 connected with the upper magnetic pole head 11 and a lower magnetic pole plate 16 connected with the lower magnetic pole head 5, a magnetic system frame 15 connected between the upper magnetic pole plate and the lower magnetic pole plate is arranged on the periphery of the coil device, the magnetic system frame 15 is of a square frame structure, and the upper magnetic pole head, the upper magnetic pole plate, the magnetic system frame, the lower magnetic pole plate and the lower magnetic pole head form a closed magnetic system together.

The pipeline system comprises an upper pipeline device 1 connected with a fluid channel on the upper magnetic pole head and a lower pipeline device 10 connected with a fluid channel of the lower magnetic pole head, wherein the upper pipeline device 1 is used for respectively and independently introducing ore pulp and water into the fluid channel of the upper magnetic pole head, and the lower pipeline device 10 is used for respectively discharging magnetic substances and non-magnetic substances.

The upper magnetic pole head comprises a magnetic pole head body and a magnetic pole head frame 18 connected with the magnetic pole head body, the fluid channel 14 is arranged on the magnetic pole head body, an overflow port 26 is arranged on the magnetic pole head frame, an upper cover 19 is arranged at the upper end of the magnetic pole head frame, an ore separator 2 is arranged on the upper cover, and the upper side pipeline device is connected with the upper cover 19.

In this embodiment, the upper side pipeline device includes a water inlet three-way pipe 29, one pipe orifice of the water inlet three-way pipe 29 is connected with a slurry inlet water inlet bent pipe 30, the slurry inlet water inlet bent pipe 30 is connected with the upper end of the ore separator 2, the other pipe orifice of the water inlet three-way pipe is provided with a water inlet valve 31, the other pipe orifice of the water inlet three-way pipe is connected with a slurry inlet return three-way pipe, a slurry inlet valve 32 is arranged between the slurry inlet return three-way pipe and the water inlet three-way pipe, and a return valve 33 is arranged at the other pipe orifice of the slurry inlet return three-way pipe. The main functions of the upper pipeline device are to realize the feeding of ore pulp, the backflow of ore pulp and the feeding of washing water. The ore separator is uniformly perforated and used for uniformly distributing ore pulp or washing water.

The lower side pipeline device comprises a four-way pipe 40, one pipe orifice of the four-way pipe is connected with the fluid channel of the lower magnetic pole head, and the other three pipe orifices are respectively provided with a concentrate valve 39, a slurry return valve 36 and a tailing valve 37. The lower end of the lower magnetic pole head is connected with a tailing bucket 6, the lower side pipeline device is connected with a fluid channel of the lower magnetic pole head through being connected to the lower end of the tailing bucket, and a pulsation mechanism 8 is connected to the tailing bucket. Specifically, the tailing bucket is fixed on the frame, the upper end of the tailing bucket is connected with the lower magnetic pole flange, and the tailing bucket is used for temporarily collecting tailings and concentrate. The lower pipe device has the main function of discharging magnetic substances and non-magnetic substances.

The pulsating mechanism is fixed on the frame and connected with the tailing hopper through a tympanic membrane 7, the tympanic membrane is made of rubber, and the pulsating mechanism can generate pulsating force so as to blast ore pulp in the tailing hopper and conduct the ore pulp into the separation cavity, so that the materials are in a loose state.

The pipeline system controls the opening and closing of the valve through the on and off of an external air source, so that the actions and time spaces of feeding ore pulp, discharging non-magnetic substances, feeding ore discharge water, discharging magnetic substances and the like are realized.

The invention is also provided with a liquid level control system which is used for controlling the height of the liquid level of the ore pulp in the separation process and adjusting the switching value of a manual valve of a tailing product according to the fluctuation of the field ore pulp amount so as to achieve the stable separation index.

The control components comprise an intelligent electrical control cabinet, wherein the intelligent electrical control cabinet can control the excitation and the magnetic interruption of the coil, the action and the reset of the respective dynamic valve in the pipeline system, the temperature of the coil, the fault alarm, the reset and the like.

The working principle of the invention is as follows: when the ore pulp passes through the magnetic medium, magnetic substances in the ore pulp are adsorbed to the surface of the magnetic medium, and non-magnetic substances are discharged from the tailing hopper and the lower side pipeline device through the magnetic medium. When the magnetic medium is fully absorbed with magnetic substances, the coil is powered off, the ore discharge water enters the separation space through the upper pipeline device and the fluid channel of the upper magnetic pole head, the magnetic medium is washed, the ore discharge water carrying the magnetic substances is discharged through the lower pipeline device, and concentrate can be obtained through filtering.

The specific working process is as follows: magnetic separation operation: the coil cooling device is started firstly, then excitation current is switched on, a magnetic field which vertically penetrates through a magnetic medium is continuously generated in a separation space formed between an upper magnetic pole head and a lower magnetic pole head in the magnetic system device at the moment, and the magnetic field intensity can be set by adjusting the current. At the moment, a high gradient magnetic field is formed on the surface of the magnetic medium in the cylinder, the concentrate valve and the slurry return valve of the lower pipeline device are closed, the tailing valve and the manual valve are opened, the water inlet valve and the reflux valve of the upper pipeline device are opened, and the slurry inlet valve is closed. External water enters the cylinder through a water inlet valve, and the water quantity reaches the preset requirement by adjusting a manual valve of the lower side pipeline device. At the moment, water is discharged from an overflow port arranged on the upper magnetic pole head, the water inlet valve and the backflow valve are closed, the pulp inlet valve is opened, ore pulp enters the separation space through the pulp inlet valve, the tailing valve and the pulp return valve are in an open state, and the concentrate valve is closed. The pulsating mechanism starts to work, when the ore pulp passes through the magnetic medium, magnetic objects in the ore pulp are acted by the magnetic field force on the surface of the magnetic medium and are adsorbed on the surface of the magnetic medium, and non-magnetic objects are discharged from a tailing valve and a pulp return valve at the lower part of the tailing hopper through the magnetic medium to become tailings. And a manual valve arranged at the tailing outlet is used for adjusting the liquid level of the ore pulp.

During magnetic separation operation, the pulsation mechanism blows ore pulp in the cavity through continuous reciprocating action, so that minerals are in a loose state, magnetic media are convenient to gather to sufficiently and uniformly adsorb magnetic substances, and local blockage is prevented.

Ore unloading operation: when the magnetic medium is fully absorbed by the magnetic substance, the slurry inlet valve of the upper pipeline device is closed, and the return valve and the water inlet valve are opened. The tailing valve and the slurry return valve of the lower side pipeline device are closed, and the concentrate valve is opened. The coil exciting current is cut off, and at the moment, the magnetic field is not generated in the sorting cavity any more. And stopping the pulsation mechanism, continuously injecting magnetic substances adsorbed on the surface of the water flushing medium into the separation cavity through the water inlet valve, discharging the magnetic substances from the concentrate outlet to form concentrate, and realizing quick and effective ore unloading. This process may be cycled 1 to 2 times depending on the effect of the ore discharge.

And when the ore unloading is finished, the system automatically switches to the magnetic separation operation to carry out the next period operation.

The whole operation flow of the equipment is controlled by the intelligent electric control cabinet, the time for magnetic separation and ore unloading, the magnetic field intensity and the like can be set, and stable and excellent sorting indexes are ensured.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a pulsation periodic magnetic separator, includes frame and pipe-line system, is provided with magnetism in the frame and is put and the pulsating movement device, its characterized in that: the magnetic system device comprises a cylinder body, an upper magnetic pole head arranged at the upper end of the cylinder body in a sealing way, a lower magnetic pole head arranged at the lower end of the cylinder body in a sealing way, and a coil device, wherein the coil device comprises a coil arranged around the periphery of the cylinder body, a separation space is formed by an inner cavity of the cylinder body and a region enclosed by the upper magnetic pole head and the lower magnetic pole head, a magnetic medium and an upper magnetic pole head are arranged in the separation space, the lower magnetic pole head is provided with a fluid channel connected with the separation space, the pipeline system comprises an upper pipeline device connected with the fluid channel on the upper magnetic pole head and a lower pipeline device connected with the fluid channel of the lower magnetic pole head, the upper pipeline device is used for respectively and independently introducing ore pulp and water into the fluid channel of the upper magnetic pole head, the lower pipeline device is used for respectively and independently discharging magnetic substances and non-magnetic substances, the lower part of the magnetic system device is provided with a tailing hopper, and the pulsation device is connected with the tailing hopper through a tympanic membrane.

2. The pulsed periodic magnetic separator of claim 1, wherein: the magnetic system device also comprises an upper magnetic pole plate connected with the upper magnetic pole head and a lower magnetic pole plate connected with the lower magnetic pole head, and a magnetic system frame connected between the upper magnetic pole plate and the lower magnetic pole plate is arranged on the periphery of the coil device.

3. The pulsed periodic magnetic separator of claim 1, wherein: the coil device also comprises a coil box body and a coil outlet cover, and the coil is arranged in the coil box body.

4. The pulsed periodic magnetic separator of claim 1, wherein: the medium hoisting piece is arranged in the separation space and comprises a hoisting rod in the middle, the medium hoisting piece comprises a hoisting frame fixed at the lower end of the hoisting rod, and the magnetic medium is fixed on the hoisting frame.

5. The pulsed periodic magnetic separator of claim 4, wherein: the lifting frame comprises a plurality of radial spokes which are radially distributed by taking the lifting rod as the center, and at least two rings of lifting rings fixed on the radial spokes.

6. The pulsed periodic magnetic separator of claim 1, wherein: the cylinder is vertically arranged, and the lower end face of the upper magnetic pole head and the upper end face of the lower magnetic pole head are oppositely arranged up and down.

7. The pulsed periodic magnetic separator of claim 1, wherein: go up the magnetic pole head and include magnetic pole head body and the magnetic pole head framework that links to each other with the magnetic pole head body, fluid passage sets up on the magnetic pole head body, is provided with the overflow mouth in the magnetic pole head framework, and the upper end of magnetic pole head framework is provided with the upper cover, covers on and is provided with the ore separator, and upside pipe-line installation links to each other with the upper cover.

8. The pulsed periodic magnetic separator as recited in any one of claims 1 to 7 wherein: the upper side pipeline device comprises a water inlet three-way pipe, one pipe orifice of the water inlet three-way pipe is connected with a slurry inlet bent pipe, the other pipe orifice of the water inlet three-way pipe is provided with a water inlet valve, the other pipe orifice of the water inlet three-way pipe is connected with a slurry inlet return three-way pipe, a slurry inlet valve is arranged between the slurry inlet return three-way pipe and the water inlet three-way pipe, and a return valve is arranged at the other pipe orifice of the slurry inlet return three-way pipe.

9. The pulsed periodic magnetic separator as recited in any one of claims 1 to 7 wherein: the lower side pipeline device comprises a four-way pipe, one pipe orifice of the four-way pipe is connected with the fluid channel of the lower magnetic pole head, and the other three pipe orifices are respectively provided with a concentrate valve, a slurry return valve and a tailing valve.