CN108262161B

CN108262161B - Wet process high gradient strong magnetic separator

Info

Publication number: CN108262161B
Application number: CN201810027086.5A
Authority: CN
Inventors: 张承臣; 唐奇; 杨成伟; 冯吉; 杨娇; 吴琼; 邓雪娇; 李斌
Original assignee: Longi Magnet Co Ltd
Current assignee: Longi Magnet Co Ltd
Priority date: 2017-02-24
Filing date: 2018-01-11
Publication date: 2024-04-02
Anticipated expiration: 2038-01-11
Also published as: CN108262159A; CN108262160A; CA3015206C; WO2018153175A1; CN207722951U; WO2018152878A1; CN108262159B; AU2018217255A1; CN106622646A; AU2018217255B2; CN108262160B; CA3015206A1; CN108262161A; AU2017279840A1

Abstract

The invention provides a wet high-gradient strong magnetic separator, which comprises an excitation system, a separation and collection system and a safety and isolation system, wherein the excitation system provides a background magnetic field for separation; the separation and collection system separates magnetic materials and non-magnetic materials in ore pulp containing magnetic minerals through magnetic separation; the safety and isolation system is used for isolating granularity of the fed materials, isolating impurities in water, isolating pollution of insulating cooling liquid, isolating magnetic fields of magnetic-fear components, and protecting safety of a motor, a coil and a medium box module and personnel safety of operators. In the invention, a plurality of components or modules realize the division and cooperation among systems so as to realize the reliable and stable strong magnetic separation of weak magnetic minerals.

Description

Wet process high gradient strong magnetic separator

Technical Field

The invention relates to the technical field of magnetic separation, in particular to a wet high-gradient strong magnetic separator.

Background

Along with the continuous progress of the modernization of society, the demand for various metal materials is also continuously increased, so that various mineral resources are continuously mined, and the high-quality mineral resources are increasingly reduced. Beneficiation, particularly fine beneficiation, has become a necessary trend for more efficient utilization of mineral resources.

In the field of mineral separation, magnetic separation has been one of the most important mineral separation methods. Especially in the separation of magnetic minerals, magnetic separation is the first choice in industry due to the advantages of stability, environmental protection, low cost, easy operation and the like. In the magnetic mineral-containing resource, the separation of most of other weak magnetic minerals, especially low-grade weak magnetic minerals, strong and weak intergrowth magnetic minerals and nonmetallic minerals taking the magnetic minerals as impurities is complicated compared with natural high-purity direct magnetic minerals and easily-separated high-grade magnetic minerals which are not needed to be separated. Along with the annual increase of the exploitation amount of modern mines, the total amount of resources of natural high-purity direct-use magnetic minerals and easily-selected high-grade magnetic minerals is reduced year by year, and tailings containing available resources (particularly magnetic available resources) after selection are increased day by day. Therefore, the sorting of the available resources in these other magnetic-bearing minerals and tailings is highly appreciated in the beneficiation community.

In the separation of these minerals, the most central equipment must be a magnetic separator with a very strong magnetic capturing capacity. Because of the wide variety of minerals and the complex and diverse forms, there is an urgent need for a strong magnetic separation apparatus having strong adaptability and adjustment capability. The separation of the minerals is more complicated and complicated in technology and separation equipment, and the relevance of each procedure in the whole technological process is extremely strong, so that the separation index and the operation safety and stability of the required equipment are also very important.

Disclosure of Invention

The invention provides a wet high-gradient strong magnetic separator, which aims to solve the problems of poor regulating capability, poor safety and stability and the like in the prior art. The wet high-gradient strong magnetic separator provided by the invention is magnetic separation equipment with extremely strong capturing capability on magnetic particles in ore pulp containing magnetic minerals, is electromagnetic separation equipment with modularized design, and is a strong magnetic separator which can separate and enrich weak magnetic particle materials in ore pulp and enables ore pulp in a separation area to be in a pulsating vibration state.

According to a first technical scheme of the invention, a wet high-gradient strong magnetic separator is provided, which comprises an excitation system, a separation and collection system and a safety and isolation system, wherein the excitation system is used for providing a background magnetic field for separation for the wet high-gradient strong magnetic separator; the separation and collection system is matched with the background magnetic field provided by the excitation system, separates the magnetic materials from the non-magnetic materials in the ore pulp containing the magnetic minerals through magnetic separation, and respectively collects the magnetic materials and the non-magnetic materials to different collection areas; the safety and isolation system is used for isolating granularity of materials fed into the wet high-gradient high-intensity magnetic separator, isolating impurities in water, isolating pollution of insulating cooling liquid, isolating magnetic fields of magnetic-fear components, and protecting safety of a motor, a coil and a medium box module and personnel safety of operators.

The excitation system comprises a magnetic yoke 1, a coil 2 and a heat exchange device 3; the magnetic yoke 1 comprises an upper magnetic pole left 110, an upper magnetic pole right 120, a magnetic conduction plate left 130, a magnetic conduction plate right 140 and a lower magnetic pole 150, wherein the upper magnetic pole left 110 and the upper magnetic pole right 120 are formed by welding or fastening and connecting an upper magnetic pole yoke plate 111 and an upper magnetic pole iron core module 112, and the lower magnetic pole 150 is formed by welding or fastening and connecting two symmetrical lower magnetic pole yoke plates 151, a lower magnetic pole iron core module 152 and water baffles 153 positioned on two sides of the lower magnetic pole yoke plate and the lower magnetic pole iron core module.

Preferably, the wet high gradient high intensity magnetic separator is configured with different upper pole core modules 112 and lower pole core modules 152 according to different operating conditions. According to different corrosion protection requirements, the upper pole core module 112 and the lower pole core module 152 of the wet high gradient high intensity magnetic separator are classified into three classes: the first grade is not specially treated; the second grade is that a water-resistant and wear-resistant antirust coating is sprayed on the surface of the magnetic pole iron core, which is contacted with the ore pulp; the third level is to add a replaceable sacrificial anode on the basis of the second level. Aiming at the use site with high content of the ferromagnetic minerals in the sorted ore pulp, the upper magnetic pole iron core module is subjected to acute angle rounding treatment or/and the arrangement of non-magnetic conductive stainless steel magnetism isolating treatment is added at the periphery of the ore flowing gap 113, while the lower magnetic pole iron core module is not subjected to acute angle rounding treatment and the arrangement of non-magnetic conductive stainless steel magnetism isolating treatment at the periphery of the ore flowing water gap 154.

Preferably, the coil 2 is composed of a coil housing 210, a coil winding 220 and an insulating cooling liquid 230 which is filled in the coil housing 210 and submerges the coil winding 220, wherein the coil housing 210 is composed of an inner coaming 211, an upper magnetic conductive plate 212, a lower magnetic conductive plate 213 and an outer coaming 214; the inner peripheral plate 211 of the coil housing 210 is made of a non-magnetically conductive steel plate, and the upper and lower magnetically conductive plates 212, 213, 214 are made of a high magnetically conductive steel plate. The coil winding 220 is disposed in the coil housing 210 and is spaced apart from the coil housing 210 by an insulating strip 240, which ensures complete insulation between the coil winding and the coil housing 210 and presets a flow passage for an insulating coolant; the coil winding 220 is also wound with insulating strips 240 that provide insulating coolant flow passages between the windings.

Preferably, the lower part of the coil housing 210 is provided with a cooling liquid inlet 215, and the upper part of the coil housing 210 is provided with a cooling liquid outlet 216 away from the cooling liquid inlet 215; the insulating coolant 230 flows into the coil housing 210 through the coolant inlet 215 and flows into the coil winding 220 and through an insulating coolant passage preset between the coil winding 220 and the coil housing 210, and then flows out through the coolant outlet 216. The circulation in the coolant channel is uniform, no dead angle occurs, and the heat generated when the coil winding 220 is excited can be entirely taken away. A shunt cavity 217 is provided between the coolant inlet 215 and the coil winding 220, and a confluence cavity 218 is provided between the coolant outlet 216 and the coil winding 220.

Further, the heat exchange device 3 is composed of a pipeline 310, a pump 320 and a heat exchanger 330; wherein the inlet of the pump 320 is connected to the cooling fluid outlet 216 of the coil through the pipe 310, the outlet of the pump 320 is connected to the heat exchanger 330, and the other end of the heat exchanger 330 is connected to the cooling fluid inlet 215 of the coil; the heat exchanger 330 may be any conventional closed cycle heat exchanger, depending on the operating conditions in the field. A drain valve 340 is arranged between the pump 320 and the cooling liquid outlet 216 of the coil and at the lowest position of the insulating cooling liquid 230, and the valve can be used for draining the insulating cooling liquid 230 in the coil 2 and the heat exchange device 3, and can also be matched with the pump 320 to inject the insulating cooling liquid 230 into the coil 2 and the heat exchange device 3.

According to a second technical scheme of the invention, the forced oil cooling vertical swivel induction wet pulsating high intensity magnetic separator comprises seven parts: the device comprises an excitation system, a sorting system, a pulsation system, a collecting system, a supporting system, a driving system and a protection system; the excitation system provides a working magnetic field; the separation system realizes continuous separation of the tailings; the pulsation system provides pulsation effect for the pulp in the forced oil cooling vertical swivel induced wet pulsation strong magnetic separator; the collecting system is used for feeding, flushing, collecting the tailings and observing and adjusting the liquid level; the support system is fixedly connected with the site foundation and supports the equipment main body; the driving system provides power for the swivel and pulsation of the forced oil cooling vertical swivel induction wet pulsation strong magnetic separator; the protection system is used for protecting the personal safety and the equipment safety.

Compared with the prior art, the wet high-gradient strong magnetic separator comprises an excitation system, a separation and collection system and a safety and isolation system adjusting system, wherein each system is formed by combining a plurality of parts or modules, and the systems are mutually cooperated to realize reliable and stable strong magnetic separation of weak magnetic minerals. The invention has the following beneficial effects:

the method is suitable for enriching the weak magnetic materials in weak magnetic minerals, especially low-grade weak magnetic minerals, enriching the weak magnetic minerals in strong-weak symbiotic magnetic minerals, and removing the magnetic impurities in nonmetallic minerals taking the magnetic minerals as impurities.

The invention has a plurality of adjustable parameters, and part of components which can seriously affect the sorting index are in modularized design, and then the plurality of sorting parameters of the equipment are adjusted or corresponding modules are replaced according to different materials to be sorted and working conditions, so that the maximum adaptation with the materials to be sorted and the working conditions on site is realized, and the ideal sorting index is obtained.

The invention implements a plurality of measures for improving the running and sorting stability of the equipment, not only can improve the working stability of each part of the wet high-gradient high-intensity magnetic separator, but also can prolong the service life of the wet high-gradient high-intensity magnetic separator, thereby ensuring the smoothness of the whole sorting flow and obtaining reliable and stable sorting indexes.

Drawings

FIG. 1 is a front view of a wet process high gradient strong magnetic separator of the present invention;

FIG. 2 is a schematic diagram of a three-dimensional structure of the wet high-gradient high-intensity magnetic separator of the invention;

FIG. 3 is a schematic diagram of the other side perspective structure of the wet high-gradient strong magnetic separator of the invention after the cover body is removed;

fig. 4 is a schematic diagram of a perspective structure of a yoke in the wet-process high-gradient strong magnetic separator of the invention;

FIG. 5 is a schematic diagram of a three-dimensional structure of the wet high-gradient strong magnetic separator of the invention on the left side of an upper magnetic pole;

FIG. 6 is a schematic diagram of a perspective structure of a lower magnetic pole in the wet high-gradient high-intensity magnetic separator according to the present invention;

FIG. 7 is a schematic diagram showing a cross-sectional view of a coil in the wet-process high-gradient high-intensity magnetic separator according to the present invention;

FIG. 8 is a schematic diagram showing a cross-sectional view of a coil housing in the wet process high-gradient high-intensity magnetic separator according to the present invention;

FIG. 9 is a schematic diagram of a heat exchange device in the wet high-gradient strong magnetic separator according to the invention;

FIG. 10 is a schematic diagram of a perspective structure of a swivel in the wet process high gradient high intensity magnetic separator of the present invention;

FIG. 11 is a schematic perspective view of a transfer ring frame in the wet high gradient high intensity magnetic separator according to the present invention;

FIG. 12 is a schematic perspective view of a dielectric box module in the wet process high gradient high intensity magnetic separator of the present invention;

FIG. 13 is a schematic view showing a perspective structure of a wet high gradient strong magnetic separator according to the present invention after a cross section of a left bearing seat of a transfer ring driving part;

FIG. 14 is a schematic cross-sectional view of a perspective structure of an ore discharge water tank in the wet high-gradient high-intensity magnetic separator of the invention;

FIG. 15 is a schematic cross-sectional view of a perspective structure of a water-in-slag separator for ore removal in the wet high-gradient high-intensity magnetic separator according to the present invention;

FIG. 16 is a schematic view of the relative positions of the magnetic material collection hopper, the middling hopper, the magnet yoke and the swivel frame of the wet high gradient strong magnetic separator of the present invention;

FIG. 17 is a schematic diagram of the relative positions of a coarse-particle separator screen plate and a hopper of the wet high-gradient high-intensity magnetic separator of the invention;

FIG. 18 is a schematic perspective view of a shield outside the swivel of the wet high gradient high intensity magnetic separator of the present invention;

FIG. 19 is a front view of the relative positions of the non-magnetic material collection hopper, the pulsing mechanism and the bracket of the wet high gradient high intensity magnetic separator of the present invention;

FIG. 20 is a schematic partial cross-sectional view of a three-dimensional structural support of the relative positions of a non-magnetic material collection hopper, a pulsing mechanism and a support of the wet high-gradient high-intensity magnetic separator of the invention;

FIG. 21 is a schematic diagram showing the structure of the pulsating box of the wet high gradient strong magnetic separator after top cover removal;

FIG. 22 is a schematic circuit diagram of the safety and isolation system and the conditioning system of the wet high gradient high intensity magnetic separator;

FIG. 23 is a schematic diagram of a forced oil cooling vertical swivel induced wet pulsating high intensity magnetic separator;

FIG. 24 is an isometric view of the forced oil cooled vertical swivel induced wet pulsed high intensity magnetic separator of FIG. 22;

FIG. 25 is an isometric cross-sectional view of the yoke of FIG. 24;

FIG. 26 is an isometric view of the coil assembly of FIG. 24;

fig. 27 is an isometric view of the winding of fig. 26:

FIG. 28 is an isometric view of the swivel of FIG. 24;

FIG. 29 is an isometric view of the ring frame of FIG. 24;

FIG. 30 is an isometric view of the concentrate hopper and the concentrate transition hopper of FIG. 24;

FIG. 31 is an isometric cross-sectional view of the concentrate collection tank of FIG. 24;

fig. 32 is an electrical schematic diagram of a forced oil cooling vertical swivel induced wet pulsating high intensity magnetic separator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. In addition, the scope of the invention should not be limited to the specific structures or components or the specific parameters described below.

In order that the detailed description of the invention may be better understood, a particular definition of some of the fuzzy concepts referred to herein will be given first:

High magnetic conductive material-metal material whose maximum relative magnetic permeability murm is more than or equal to 500;

soft magnetic material-metal material with coercive force HC less than or equal to 300A/m;

non-magnetic material-metal material whose maximum relative magnetic permeability murm is less than or equal to 1.6;

magnetic particles (materials), materials with lower specific magnetization coefficient but which can be magnetically separated by a strong magnetic field;

non (non) magnetic particles (materials) -materials that are themselves non-magnetic or that have insufficient magnetic purity of the material particles (when weakly magnetic materials are enriched);

upper, lower, left, right, clockwise, counterclockwise-all with reference to the corresponding directions of fig. 1 when not explicitly described;

upper magnetic pole-upper magnetic pole left and upper magnetic pole right in the same sense;

magnetic conductive plate-the left and right of the magnetic conductive plate;

upper pole core-core portions commonly referred to as upper pole left and upper pole right;

upper pole yoke plate-yoke plates of the same finger upper pole left and upper pole right;

iron core or magnetic pole iron core-upper and lower magnetic pole iron cores in the same sense;

XX module-the name after XX modular design, indicating that this component has a variety of interchangeable forms, the same as XX;

the closed circulation heat exchanger refers to a heat exchange device which is not contacted with cold and hot media when the heat media exchange heat with the outside.

In the drawings of the wet high gradient high intensity magnetic separator of the present invention, fig. 1 to 22 are marked as follows:

fig. 1 is a front view of the wet high gradient high intensity magnetic separator according to the present invention, labeled in fig. 1: 1-a magnetic yoke 2-a coil 4-a swivel 5-a swivel driving part 6-a mineral feeding hopper 7-a water flushing hopper 8-a mineral discharging water tank 9-a magnetic material collecting hopper 11-a non-magnetic material collecting hopper 12-a pulsation mechanism 13-a liquid level observing hopper 19-a protective cover 24-a liquid level meter;

fig. 2 is a schematic diagram of a three-dimensional structure of the wet high-gradient high-intensity magnetic separator according to the present invention, and the label in fig. 2 is as follows: 1-a magnetic yoke 2-a coil 5-a swivel driving part 6-a mineral feeding bucket 7-a water flushing bucket 8-a mineral discharging water tank 9-a magnetic material collecting bucket 11-a non-magnetic material collecting bucket 12-a pulsation mechanism 13-a liquid level observation bucket 15-a mineral discharging water slag separating tank 19-a protective cover 24-a liquid level meter 25-a bracket;

fig. 3 is a schematic diagram of another side perspective structure of the wet high-gradient strong magnetic separator of the present invention, with the cover removed, and labeled in fig. 3: 1-a magnetic yoke 2-a coil 3-a heat exchange device 4-a swivel 5-a swivel driving part 6-a mineral feeding bucket 7-a water flushing bucket 8-a mineral discharging water tank 9-a magnetic material collecting bucket 11-a non-magnetic material collecting bucket 12-a pulsation mechanism 15-a mineral discharging water slag separating tank 17-a temperature measuring probe 18-a flow switch 25-a bracket;

fig. 4 is a schematic perspective view of a magnetic yoke 1 in the wet high-gradient strong magnetic separator according to the present invention, and the marks in fig. 4 are as follows: 110-upper magnetic pole left 120-upper magnetic pole right 130-magnetic conduction plate left 140-magnetic conduction plate right 150-lower magnetic pole;

Fig. 5 is a schematic diagram of a three-dimensional structure of the upper pole left 110 in the wet high-gradient strong magnetic separator according to the present invention, and the marks in fig. 5 are as follows: 111-an upper pole yoke plate 112-an upper pole core module 113-a running clearance 114-a running clearance;

fig. 6 is a schematic perspective view of a lower magnetic pole 150 in the wet high-gradient high-intensity magnetic separator according to the present invention, and the marks in fig. 6 are as follows: 151-lower pole yoke plate 152-lower pole core module 153-water deflector 154-running water gap;

fig. 7 is a schematic diagram showing a cross-sectional view of a coil 2 in the wet process high gradient strong magnetic separator according to the present invention, and the marks in fig. 7 are as follows: 210-coil housing 220-coil windings 230-insulating coolant 240-insulating strips;

fig. 8 is a schematic diagram showing a cross-sectional view of a coil housing 210 in a wet process high gradient magnetic separator according to the present invention, and the marks in fig. 8 are as follows: 17-a temperature measurement probe 211-an inner surrounding plate 212-an upper magnetic conduction plate 213-a lower magnetic conduction plate 214-an outer surrounding plate 215-a cooling liquid inlet 216-a cooling liquid outlet 217-a diversion cavity 218-a confluence cavity;

fig. 9 is a schematic diagram of a perspective structure of a heat exchange device 3 in the wet high-gradient strong magnetic separator according to the present invention, and fig. 9 is marked with the following symbols: 17-a temperature measuring probe 18-a flow switch 215-a cooling liquid inlet 216-a cooling liquid outlet 310-a pipeline 320-a pump 330-a heat exchanger 340-a liquid discharge valve;

Fig. 10 is a schematic perspective view of the transfer ring 4 of the wet high gradient strong magnetic separator according to the present invention, and the marks in fig. 10 are as follows: 410-swivel frame 420-media cassette module;

fig. 11 is a schematic perspective view of a ring frame 410 in the wet high-gradient high-intensity magnetic separator according to the present invention, and the marks in fig. 11 are as follows: 411-hub 412-web 413-support ring 414-backbone;

fig. 12 is a schematic perspective view of a dielectric box module 420 in the wet high-gradient high-intensity magnetic separator according to the present invention, and the symbol in fig. 12 is: 421-a non-magnetic conductive frame plate 422-a high magnetic conductive medium 423-an ear plate;

fig. 13 is a schematic view showing a perspective structure of a wet high-gradient strong magnetic separator according to the present invention, in which a left bearing seat of a transfer ring driving member 5 is cut away, and a mark in fig. 13: 510-a central shaft 520-a magnetism isolating expansion sleeve 530-a central shaft bearing seat 540-a gear transmission 550-a swivel driving motor 560-a speed reducer 531-a central shaft bearing;

fig. 14 is a schematic diagram showing a perspective structure of an ore discharge water tank 8 in the wet high-gradient high-intensity magnetic separator according to the present invention, and the marks in fig. 14 are as follows: 810-a water spray module 820-a rinse water outlet 830-a flow aid water outlet 840-a water separator;

fig. 15 is a schematic view showing a perspective structure of a water-in-ore-discharging slag-separating box 15 in the wet high-gradient high-intensity magnetic separator according to the present invention, and the marks in fig. 15 are as follows: 1510-a slag separation sieve plate 1520-a slag discharge valve;

Fig. 16 is a schematic diagram showing the relative positions of the magnetic material collecting hopper 9, the middling hopper 10, the magnetic yoke 1 and the swivel frame 410 of the wet high-gradient strong magnetic separator according to the present invention, and the marks in fig. 16 are as follows: 1-a magnetic yoke 6-a feeding bucket 10-a middle bucket 410-a swivel frame 910-a collecting part 920-a guiding part 930-a summarizing part;

fig. 17 is a schematic diagram of the relative positions of the coarse grain separator screen plate 14 and the ore hopper 6 of the wet high-gradient strong magnetic separator according to the present invention, and the marks in fig. 17 are as follows: 14-coarse grain material separating sieve plate 6-ore feeding hopper;

fig. 18 is a schematic perspective view of a protective cover 19 of the wet high-gradient high-intensity magnetic separator of the present invention, which is located outside the swivel, and labeled in fig. 18: 1910-a viewing window;

fig. 19 is a front view showing the relative positions of the non-magnetic material collecting hopper 11, the pulsation mechanism 12 and the bracket 25 of the wet high-gradient high-intensity magnetic separator according to the present invention, and the marks in fig. 19 are as follows: 1110-a right collecting section 1120-a left collecting section 1130-a non-magnetic material discharging valve 1210-a pulsation case 1220-a driving belt pulley set 1230-a pulsation motor 1250-a rubber flexible connection;

fig. 20 is a schematic partial sectional view of a three-dimensional structural support of the relative positions of a non-magnetic material collecting hopper 11, a pulsation mechanism 12 and a support 25 of the wet high-gradient high-intensity magnetic separator according to the present invention, and the marks in fig. 20 are as follows: 1110-a right collecting section 1120-a left collecting section 1130-a non-magnetic material discharging valve 1210-a pulsation case 1220-a driving belt pulley group 1230-a pulsation motor 1240-a pulsation push plate 1250-a rubber flexible connection 25-a bracket;

Fig. 21 is a schematic diagram showing a structure of the pulsation tank 1210 of the wet high-gradient high-intensity magnetic separator according to the present invention after top cover removal, and the label in fig. 21 is as follows: 1211-eccentric wheel module 1212-push rod 1220-drive pulley set;

fig. 22 is a schematic circuit structure diagram of a safety and isolation system and an adjustment system of the wet high-gradient strong magnetic separator according to the present invention, and the label in fig. 22 is as follows: 16-motor protector 20-silicon controlled rectifier (or diode combined IGBT) rectifying module 2010-constant current controller 2011-current setting unit 21-Hall element or other similar functional element 22-swivel frequency converter 23-pulsation frequency converter 24-liquid level meter 220-coil winding 550-swivel driving motor 1230-pulsation motor 320-pump 1520-slag discharging valve (with timing automatic switching function) 1130-nonmagnetic material discharging valve (automatic control).

Fig. 23-32 are labeled as follows:

110/120-upper magnetic pole 130/140-magnetic conduction plate 150-lower magnetic pole 153-water baffle 160-upper and lower magnetic pole connecting lug 210-coil housing 220-coil winding 240-insulating strip 241-insulating strip bracket 250-expansion tank 320-pump 330-heat exchanger 410-swivel frame 412-web 420-media box module 5-swivel driving part 510-central shaft 6-ore feeding bucket 7-water flushing bucket 8-ore discharging water tank 910-collecting part 920-guiding part 930-collecting part 11-non-magnetic material collecting bucket 1131-valve adjusting rod 1210-pulsation tank 1230-pulsation motor 1240-pulsation push plate 1250-rubber soft connection 13-liquid level observation bucket 15-ore discharging water slag isolation tank 19-protecting cover 25-bracket.

The invention provides a wet high-gradient strong magnetic separator, which mainly comprises four systems: the system comprises an excitation system, a sorting and collecting system, a safety and isolation system and a regulating system. The excitation system can provide a background magnetic field for sorting for the wet high-gradient strong magnetic separator; the separation and collection system is matched with a background magnetic field provided by the excitation system, so that magnetic materials and non-magnetic materials in the mineral slurry containing the magnetic minerals can be separated through magnetic separation and are respectively collected to different collection areas; the safety and isolation system is used for isolating granularity of materials fed into the wet high-gradient strong magnetic separator, isolating impurities in water, isolating pollution of insulating cooling liquid, isolating magnetic fields of magnetic-fear components (such as bearings, motors, speed reducers and the like), and protecting safety of important components (such as motors, coils, swivel rings, medium box modules and the like) and protecting personal safety of operators; the adjusting system is used for adjusting the background magnetic field intensity of the excitation system, the rotating speed of a transfer ring (related to the sorting time of materials) in the sorting and collecting system, the vibration amplitude and frequency (related to the vibration intensity and frequency of ore pulp in the sorting area) and the liquid level (related to the length of the sorting area) and the rinse water and the unloading water/angle. According to the invention, the modularized design is carried out on part of the components which can influence the sorting index, and the corresponding modules can be replaced according to different sorting materials and working conditions, so that the ideal sorting index is achieved.

The slower the rotating speed of the rotating ring is, the longer the sorting time of the materials is, the smaller the treatment capacity is, and the time division effect is not obvious when the rotating speed of the rotating ring is very low; the amplitude and the frequency of the pulsation respectively form positive correlation with the vibration intensity and the frequency of ore pulp in the separation area; the liquid level height and the length of the sorting area form a positive correlation, the sorting effect obviously decreases when the liquid level is too small, and a calibrated liquid level is generally set; the automatic monitoring device designed in the invention is mainly used for monitoring the liquid level, wherein manual or automatic adjustment can be adopted for monitoring the liquid level.

In the present invention, the separation purpose of the weakly magnetic minerals and the nonmetallic minerals whose magnetic substances are regarded as impurities is to separate the magnetic particles from the nonmagnetic particles or the particles of insufficient purity, and if the magnetic particles are to be separated from the original mixed minerals, a sufficiently strong magnetic trapping force must be provided.

The magnitude of the magnetic trapping force to which the magnetic particles are subjected is determined mainly by the average specific magnetic coefficient, the sorting magnetic field strength and the gradient of the magnetic particles themselves. While the average specific magnetic coefficients of the magnetic impurity particles in both weakly magnetic and non-metallic ores are generally relatively low. If it is desired to generate a sufficiently strong magnetic trapping force in such a case, the problem should be solved by increasing the strength and gradient of the sorting magnetic field.

The wet high-gradient strong magnetic separator provided by the invention is based on the long-term research results of the applicant on the magnetic separation technology, and realizes the coordinated application of high separation magnetic field intensity and gradient by utilizing the induction magnetization principle, namely, magnetically conductive soft materials in a background magnetic field can be magnetized, the magnetized soft materials can influence the trend of magnetic lines in the background magnetic field, a small-range induction magnetization field region is formed at the near surface, and different magnetization field regions are formed by different materials and different shapes of soft materials. The invention relates to a soft magnetic material with high magnetic conductivity and a tip (various tip forms, including round bar forms) and forms a magnetized field area with high magnetic field intensity and gradient higher than the background magnetic field at the tip in the background magnetic field.

The excitation system involved in the wet high-gradient high-intensity magnetic separator of the invention produces a background magnetic field region in operation that magnetizes soft magnetic material, which region is defined herein as the sorting region. The exciting system is composed of a magnetic yoke, a coil and a heat exchange device, wherein the coil generates a magnetic field when energized, the magnetic field is converged and strengthened by the magnetic yoke, a semi-closed arc-shaped magnetic field area is manufactured in the coil and at the center of the magnetic yoke, the magnetic field strength of the magnetic field area is changed along with the intensity change of input current of the exciting coil, the magnetic field of the area is a background magnetic field, and the area is a sorting area.

In order to introduce and discharge the ore pulp into and out of the sorting area, a certain number of ore flowing gaps capable of guiding the ore pulp to enter and exit are arranged on the upper magnetic pole iron core and the lower magnetic pole iron core. Because some factories add some chemical agents into ore pulp in the sorting process, the sorted ore pulp has corrosiveness to different degrees, and the corrosiveness ore pulp can corrode the magnetic pole iron core when flowing through the ore flowing gap of the magnetic pole iron core. If the magnetic pole iron core is corroded for a long time, the original thickness of the magnetic pole iron core is changed, so that the magnetic conductivity is reduced, the background field intensity and the magnetic field distribution of the wet high-gradient high-intensity magnetic separator are weakened and changed, and the stability of the sorting index is finally affected; meanwhile, if the welding part is severely corroded for a long time, the structural strength and the service life of the welding part are more affected. Even in mineral slurries containing no corrosive agents, the water contained therein can rust the pole cores over a long period of time, and although this rust hardly affects the magnetic field performance and structural strength of the equipment, it is particularly important for nonmetallic minerals which themselves contain very low iron content and regard magnetic substances as impurities.

In order to solve the problem that corrosiveness affects performance indexes and service life, an upper magnetic pole iron core and a lower magnetic pole iron core of a magnetic yoke part are in modularized design, and three levels of treatment are carried out according to different required protection levels: the first grade is a sorting process which is not specially treated and is applicable to general non-corrosiveness; the second level is to spray a waterproof and wear-resistant anticorrosive coating on the surface of the magnetic pole iron core, which is contacted with ore pulp, and is suitable for the separation process of slightly corrosive or nonmetallic minerals; the third grade is to add a replaceable sacrificial anode on the basis of the second grade, and is suitable for the sorting process of ore pulp with stronger corrosiveness, especially corrosive ions, and the sacrificial anode can be replaced at any time, so that the grade has stronger corrosion resistance.

In addition, if the content of the ferromagnetic mineral in the separation ore pulp is too high, the ferromagnetic mineral is easily adsorbed at the sharp angle of the upper magnetic pole iron core module when entering the upper magnetic pole, and the phenomenon of ore flowing gap blockage of the upper magnetic pole iron core can occur for a long time. Aiming at the special working condition, the upper magnetic pole iron core module is provided with more than the lower magnetic pole iron core module with the arrangement of rounding the acute angle of the periphery of the ore flowing gap and adding non-magnetic-conductive stainless steel magnetism isolating treatment. The configuration can greatly weaken the adverse effect caused by the tip induction magnetic field of the upper magnetic pole iron core ore flowing gap, and prevent the upper magnetic pole iron core ore flowing gap from being blocked.

The coil in the wet high-gradient strong magnetic separator is a core component of a background magnetic field source, and only the coil is electrified and excited to generate the background magnetic field, so that the working stability of the coil directly determines the stability of the background magnetic field, and further determines the stability of the sorting index. In order to obtain a stable excitation environment, the coil part of the wet high-gradient strong magnetic separator adopts a forced insulation cooling liquid circulation cooling mode. The coil winding is arranged in the shell, and gaps through which insulating cooling liquid can circulate are formed between the inside of the coil winding and the space between the winding and the shell by adopting insulating strips, so that the insulation of the coil can be ensured, and the insulating cooling liquid can carry heat generated when the coil winding is excited when flowing through the gaps. However, as the main body of the invention is magnetic separation equipment, the structural characteristics of the wet high-gradient strong magnetic separator and the magnetic circuit need to be combined in the coil manufacturing process; and because the coil is only one component of the wet high-gradient strong magnetic separator, the structure of the coil must be compact. According to the magnetic field requirement, the inner coaming of the coil shell is made of non-magnetic-conductive stainless steel so as to prevent the magnetic field from reducing the magnetic field of the sorting area after the magnetic field is short-circuited, and the upper magnetic-conductive plate, the lower magnetic-conductive plate and the outer coaming are made of high magnetic-conductive steel plates, so that the coil shell has the effects of reducing the magnetic leakage of the coil and converging the magnetic field.

The inlet of the cooling liquid is arranged at the lower part of one end of the coil in the length direction, and the corresponding cooling liquid outlet is arranged at the upper part of the other end far away from the inlet. The cooling liquid in the coil shell is further provided with a flow distribution cavity and a flow converging cavity at the inlet and outlet respectively, so that the flow of the cooling liquid in the coil is more uniform and stable, the generation of flow dead angles is avoided, the heat dissipation stability of the coil winding is ensured, and the coil winding damage caused by long-term positive flushing of the cooling liquid is prevented. Because the total amount of the cooling liquid needed by the coil and the heat exchange system is relatively large, so much liquid is conventionally injected by adopting a liquid injection pump. The invention sets the liquid discharge valve of the cooling liquid between the pump and the cooling liquid outlet of the coil, the outlet is set at the lowest position of the heat exchange device. The valve can be used for draining insulating cooling liquid in the coil and the heat exchange device, and has the function of injecting the insulating cooling liquid into the coil and the heat exchange device under the condition of being matched with a pump.

Secondly, the sorting and collecting system in the wet high-gradient high-intensity magnetic separator can generate a high-intensity induction magnetic field in a sorting area manufactured by an excitation system, capture magnetic particles by using the induction magnetic field, take the captured magnetic particles out of the sorting area and flush the captured magnetic particles into a magnetic material collecting hopper by using ore discharge water, and enter a non-magnetic material collecting hopper after the non-magnetic part is not captured and freely passes through the induction magnetic field, so that the separation process of magnetic materials and non-magnetic materials is completed.

The sorting system consists of a swivel, a swivel driving part, an ore feeding bucket, a water flushing bucket, an ore discharging water tank, a magnetic material collecting bucket, a non-magnetic material collecting bucket, a middle ore bucket, a pulsation mechanism and a liquid level observing bucket. The rotating ring carries a plurality of medium boxes made of high-permeability soft magnetic materials, and an annular structure capable of continuously feeding and taking the medium boxes into and out of the sorting area is designed. The sorting system also designs a feeding and discharging mechanism, a magnetic material, a non-magnetic material, a middling collecting mechanism, a pulsation and flushing mechanism which is helpful to improve sorting indexes and a sorting liquid level height observing mechanism which is necessary during sorting.

When the medium box enters the sorting area along with the swivel, the high-permeability medium made of the high-permeability soft magnetic material is magnetized, a magnetization field region with high field strength and high gradient is formed at the tip end part, and at the moment, the material to be sorted enters the wet high-gradient high-intensity magnetic separator from the ore feeding hopper and flows into the swivel through the ore flowing gap of the upper magnetic pole iron core. The material must pass through this magnetic field selection region when flowing through the swivel, and magnetic material granule is adsorbed under the effect of magnetic force at this moment and is caught, and non-magnetic material granule does not receive the effect free passage of magnetic force this magnetic field region and flows into in the non-magnetic material collection fill. The captured magnetic material rotates out of the separation area along with the swivel, the induced magnetic field of the magnetic medium disappears after the captured magnetic material leaves the separation area, and the magnetic capturing force also disappears. When the magnetic material collecting hopper is rotated to the upper part, the captured material particles start to fall and are collected by the magnetic material collecting hopper, the material particles which fail to fall in time can be flushed into the magnetic material collecting hopper by the ore discharging water when the material particles are rotated to the lower part of the ore discharging water tank, and then the medium box becomes clean again and enters the sorting area along with the swivel again, so that the circulation of a sorting process is completed.

The swivel in the wet high-gradient strong magnetic separator is the most core component of a separation system, and the medium box is the most important component of the swivel. Because the materials to be selected are various in variety and complex and various in form, even the same mineral generally has various differences such as different dissociation degrees and different magnetic particle size embedding. In order to better adapt to the sorting of the materials, the wet high-gradient strong magnetic separator provided by the invention is designed in a modularized manner, and has stronger adaptability by changing the form and arrangement of soft magnetic materials in the medium box.

The medium box modules are divided into a plurality of forms according to the difference of the granularity of the materials in the sorting ore pulp, the difference of the magnetic material content in the materials and the difference of the granularity distribution of the magnetic materials in the use site. Sorting materials or forms, wherein the high magnetic conductive medium comprises a rod-shaped medium and a net-shaped medium, and comprises steel wool or any other magnetic conductive material which can be placed on a rotating ring and is used for generating an induced magnetic field in the wet high-gradient high-intensity magnetic separator; from the arrangement, the high magnetic conduction medium comprises compact arrangement and loose arrangement, wherein the medium gap uniform arrangement and the medium gap gradient increasing or decreasing arrangement are included, and the medium gap gradient increasing or decreasing arrangement comprises single magnetic conduction medium arrangement and mixed arrangement of magnetic conduction mediums in various forms.

In the specific application of the wet high-gradient high-intensity magnetic separator, aiming at materials with corrosiveness in ore pulp, a medium box module is divided into 3 corrosion protection grades: the first grade is that the high magnetic conduction medium adopts an anti-corrosion material, and is suitable for a general non-corrosive sorting process; the second grade is to carry out integral film coating treatment on the medium box module on the basis of the first grade, and is suitable for a sorting process with slightly corrosive working conditions; the third grade is to add a sacrificial anode on the basis of the second grade, and is suitable for the sorting process with moderate and severe corrosivity, especially the working condition of corrosive ions. Different medium box modules are arranged for the wet high-gradient strong magnetic separator according to different working conditions, so that the adaptability of the wet high-gradient strong magnetic separator is enhanced, and better and more stable separation indexes are obtained.

In field production, the magnetic particles captured by the magnetic medium rotate along with the swivel to leave the separation area, and the induced magnetic field of the magnetic medium disappears after leaving the separation area, so that the magnetic capturing force also disappears. When the swivel is rotated below the ore discharging water tank, all magnetic particles in the medium box module are supposed to be fully flushed into the magnetic material collecting hopper by the ore discharging water, but the phenomenon of incomplete ore discharging also frequently occurs due to the diversity and complexity of on-site working conditions, and the medium box module with incomplete ore discharging can definitely influence the sorting effect of the follow-up process if entering the sorting area again. In order to better unload the ore, the wet high-gradient strong magnetic separator of the invention designs an ore unloading water spraying module in an ore unloading water tank. The size of the water spraying hole (the size of the water spraying amount is changed under the condition of not changing the pressure of the ore discharging water), the shape (such as column, curtain and fan) of water spraying, the form (continuous, pulse, parallel and crossed) and the water spraying position and the water spraying angle (matched with the arrangement of magnetic media in the media box module) within a certain range can be conveniently and quickly changed by changing the module. The equipment parameters of the wet high-gradient strong magnetic separator and the types of the medium box modules are combined with the on-site working conditions, and then the water spraying modules are matched with each other to change, so that a better ore discharging effect can be realized.

The pulsation pushing plate in the pulsation mechanism in the separation system is in sealing connection with the right collecting section of the non-magnetic material collecting hopper through rubber flexible connection. The pulsation mechanism is used for generating reciprocating pulsation oscillating force and transmitting the pulsation oscillating force to ore pulp in the non-magnetic material collecting hopper. The pulsating vibration force can extend into the separation area along with the ore pulp, so that the ore pulp in the induction magnetization field area in the separation area also generates pulsating vibration, thereby being beneficial to reducing the inclusion phenomenon generated when the magnetic material particles are adsorbed and captured under the action of magnetic force and improving the purity of the separated magnetic particle materials.

The safety and isolation system is a core component of the wet high-gradient strong magnetic separator, and can ensure the running stability of equipment. Because the feeding of the wet high-gradient high-intensity magnetic separator is generally the discharging of a mill, some large-granularity materials or sundries are inevitably mixed in the materials, and if the large-granularity materials or sundries are blocked at any position in the feeding link, the large-granularity materials or sundries can seriously affect the sorting index, so that the large-granularity high-intensity magnetic separator is designed in the feeding process, and the large-granularity high-intensity magnetic separator can prevent the large-granularity materials from blocking the upper magnetic pole core ore flowing gap or the medium box module, thereby reducing the interference of the sorting process and improving the sorting stability of equipment.

Since the amount of the ore discharge water required in ore discharge is large, industrial circulating water is generally used as the ore discharge water in factory production. Large-granularity particles which cannot settle in time, especially light floaters, are unavoidable in industrial circulating water, and water spraying holes in the ore discharging water tank can be blocked by the existence of the impurities. If a certain water spray hole is blocked, the medium boxes which are cleaned under the water spray hole can be directly caused to be disarmed, and when the medium boxes enter the sorting area again, the sorting work can not be normally completed. In the past, the situation can only be left at the discretion, or the water spraying hole in the ore discharging water tank can be cleaned by stopping. Because each process of the whole separation process has extremely strong relevance, and the wet high-gradient strong magnetic separator is core equipment of the whole process, all equipment associated with the whole production line must be shut down when the wet high-gradient strong magnetic separator is shut down. Shutting down these devices can have a great influence on production, but listening to it can also affect sorting indexes, reducing recycling rate of resources, and causing great resource waste.

In order to solve the problem, the wet high-gradient strong magnetic separator is provided with the slag separation box for the mineral water before the mineral water inlet, and the bottom of the slag separation box is provided with the manual or automatic slag discharge valve which can conveniently discharge the separated impurities in time, so that the phenomenon that the mineral water spray holes are blocked is avoided, the influence on separation indexes caused by incomplete mineral discharge is reduced, and the stability of the separation effect of the wet high-gradient strong magnetic separator is improved.

The coil is an important core component of the wet high-gradient strong magnetic separator. The coil must be in the state of being energized to produce a magnetic field, so that the wet high-gradient high-intensity magnetic separator has magnetic separation capability, and the coil is energized to necessarily cause the windings in the coil to produce heat, which would burn the coil if not transferred out in time.

The wet high-gradient strong magnetic separator adopts the mode of cooling the coil inner winding by closed circulation of the insulating cooling liquid to control the temperature rise of the coil winding. The insulating cooling liquid flows through the inside of the coil, performs full heat exchange with the coil winding, brings heat to the outside of the coil, performs heat exchange with the outside at a heat exchange device outside the coil, transfers the heat generated by the coil winding to cooling water or air, and enters the inside of the coil again after being cooled by the heat exchange device to form closed circulation. The whole process insulating cooling liquid is not in direct contact with the outside, so that the outside impurities are not brought into the coil, the phenomenon that the cooling of the coil is affected by scale formation and the heat dissipation of the coil is not caused, the inside cleanness of a coil cooling system is ensured, and the coil can work stably.

In order to ensure stable, safe and reliable coil operation, the wet high-gradient strong magnetic separator is provided with temperature measuring probes on the coil cooling liquid inlet pipeline and at the top layer of the insulating cooling liquid near the cooling liquid outlet, and monitors the temperature and the temperature difference of the insulating cooling liquid at the inlet and the outlet of the coil in real time, and gives out fault alarms when the temperature is too high or the temperature difference is too large; a flow switch is arranged on a coil cooling liquid pipeline, the flowing state of insulating cooling liquid is monitored, and a fault alarm is sent out when the flow rate does not meet the set requirement. When the fault parameters reach a preset high value, the wet high-gradient high-intensity magnetic separator automatically stops excitation, enters a self-protection mode and sends out an alarm signal, so that the coil part of the wet high-gradient high-intensity magnetic separator is ensured not to be damaged. When an alarm is sent, the fault point and the possible cause of the fault are clear, the fault cause is found and solved in time, so that the production cannot be greatly influenced, and the running stability of the equipment is ensured.

Further, as a strong magnetic sorting apparatus, the inside of the apparatus and the vicinity of the yoke are filled with a magnetic field. The bearing supporting the swivel to operate in a magnetic field is easy to generate an electric erosion phenomenon and also easy to generate a phenomenon that tiny magnetic particles enter the bearing, and the service life of the bearing can be shortened under the conditions; the magnetic field has more serious influence on the speed reducer with the internal gear as the main material and the motor with the rotor, so that the load of the speed reducer can be increased intangibly, and the working stability of the speed reducer and the motor is reduced.

In the invention, magnetic force lines are outwards diverged by taking the coil as an electrified solenoid to form a magnetic force line closed circuit, the magnetic yoke is designed according to the divergence direction of the magnetic force lines, and the magnetic conductive material is arranged in the direction, so that most of magnetic fields can be shielded inside the magnetic conductive material.

In general, the structure formed by the swivel web, the middle shaft, the bearing seat, the gear set, the speed reducer and the motor combination is basically consistent with the closed magnetic line direction, so that the web, the middle shaft, the bearing seat, the gear set, the speed reducer and the motor combination can be necessarily a part of the closed magnetic line path anyway. If no treatment is carried out, a large number of magnetic force lines are necessary to pass through the bearing, the speed reducer and the motor, and the working stability of the motor is reduced. In order to solve the problem, the invention adopts a cutting-off isolation method, namely, the method of increasing an air gap and reducing a contact area (both for increasing the magnetic resistance of the magnetic circuit) on the closed circuit is adopted to reduce the magnetic flux flowing in the closed circuit, thereby reducing the influence of magnetic field force on a bearing, a speed reducer and a motor and prolonging the overall service life of the wet high-gradient high-intensity magnetic separator.

The wet high-gradient strong magnetic separator is also provided with motor protectors for all motors, and can timely protect and give out an alarm when phase failure or overload occurs, so as to prevent the motors from being damaged; meanwhile, a protective cover body is arranged for the operation part so as to ensure the safety of operators. In order to observe the running condition of the equipment, an observation window is further arranged, and a protective net is arranged on the observation window so as to prevent operators from accidentally touching running parts to be injured.

The adjusting system in the wet high-gradient strong magnetic separator is used for adjusting all working parameters, so that the adaptability of the wet high-gradient strong magnetic separator is improved, and better sorting indexes are obtained.

The separation field intensity is a power source for generating an induced magnetic field by a magnetic medium, and the size of the separation field intensity is directly reflected on a separation index, so that the stability of the separation field intensity is the most important index of the working stability of the wet high-gradient high-intensity magnetic separator. The size of the sorting field intensity is realized by changing the exciting current of the wet high-gradient high-intensity magnetic separator coil, and the exciting coil of the wet high-gradient high-intensity magnetic separator adopts direct current for power supply, so that the exciting current is required to be constant direct current. The coil winding generates heat in the electrifying process, so that coil temperature rise is generated, and the resistance value of the winding can be changed along with the temperature rise. The input voltage at the factory site may not be very stable, and small-amplitude changes may occur at any time. In order to realize that exciting current does not fluctuate along with external fluctuation and ensure stability of a sorting magnetic field, exciting input of the wet high-gradient high-intensity magnetic separator coil adopts a current setting unit to input preset current, a constant current controller is used for controlling a silicon controlled rectifier (or a diode is combined with an IGBT) rectifying module to convert industrial electricity into preset direct current to be input into the wet high-gradient high-intensity magnetic separator coil, a Hall element or other similar functional elements are arranged in the process of inputting current into the coil to monitor the current and feed the current back to the constant current controller, and then the constant current controller is used for correspondingly adjusting output voltage after comparing a detection value with the preset value, so that the current of the input coil of the wet high-gradient high-intensity magnetic separator is ensured to be consistent with the preset current of the current setting unit.

Aiming at different feeding material properties, feeding amount and sorting index requirements to be realized, the size of sorting field intensity needs to be regulated, and the rotating speed of the swivel, the pulsation frequency and the pulsation amplitude need to be correspondingly regulated. In order to adjust the rotating speed and the pulsation frequency of the rotating ring of the wet high-gradient strong magnetic separator, the wet high-gradient strong magnetic separator is respectively provided with the rotating ring frequency converter and the pulsation frequency converter at the front end, and the corresponding adjustment of the rotating speed and the pulsation frequency of the rotating ring can be realized by adjusting the output frequencies of the rotating ring frequency converter and the pulsation frequency converter. In order to adjust the pulsation amplitude of the wet high-gradient strong magnetic separator, an eccentric wheel in a pulsation box adopts a modularized design, and the corresponding adjustment of the pulsation amplitude can be realized by replacing the eccentric wheel module.

In addition, the separation area of the wet high-gradient strong magnetic separator is required to be immersed below the separation liquid level when the wet high-gradient strong magnetic separator performs separation work. This is because the material immersed below the sorting level will be more loose and separation of the magnetic and non-magnetic particle material will be easier to achieve; meanwhile, only the separation area is immersed below the separation liquid level, the pulsating force of the pulsation box can extend along with the ore pulp, so that the ore pulp in the induction magnetization field area in the separation area can also generate pulsation oscillation, the inclusion phenomenon generated when the magnetic particle materials are adsorbed and captured under the action of magnetic force is reduced, and the purity of the separated magnetic particle materials is improved.

In order to timely observe the liquid level and give a basis for the adjustment of the sorting liquid level, the wet high-gradient strong magnetic separator is provided with a liquid level observation bucket communicated with a non-magnetic material collecting bucket, and the liquid level in the liquid level bucket can be monitored by manpower or a liquid level meter. When the liquid level in the liquid level observation bucket is found to change, the opening degree of one or more non-magnetic material discharging valves at the bottom of the non-magnetic material collection bucket can be manually or automatically adjusted to ensure that the liquid level is stably positioned near the designed height.

In order to obtain a purer magnetic material, a rinsing process is provided before the magnetic material captured by the magnetic medium leaves the sorting area. The source of the rinse water and the ore discharge water are the same, and the rinse water and the ore discharge water are industrial circulating water. The trapped minerals in the captured magnetic materials and minerals with insufficient purity can be selectively washed away from the medium box module by adjusting the flushing water quantity of the flushing water, so that the minerals enter the non-magnetic material collecting hopper, and therefore purer magnetic materials are obtained.

The flushing and ore discharging of the ore discharging water tank is particularly important in order to enable the medium box modules entering the sorting area to be clean without affecting sorting in the next period. Furthermore, in order to better unload the ore, an ore unloading water spraying module is designed in the ore unloading water tank of the wet high-gradient strong magnetic separator. The size of the water spraying hole (the size of the water spraying amount is changed under the condition of not changing the pressure of the ore unloading water), the shape and form of water spraying, and the water spraying position and water spraying angle in a certain range can be conveniently and quickly changed by changing the module. The equipment parameters of the wet high-gradient strong magnetic separator and the types of the medium box modules are combined with the on-site working conditions, and then the water spraying modules are matched with each other to change, so that a better ore discharging effect can be realized.

The present invention will be specifically explained below with reference to the drawings of the present invention.

In the wet high-gradient strong magnetic separator provided by the invention, the magnetic yoke 1 consists of an upper magnetic pole left 110, an upper magnetic pole right 120, a magnetic conduction plate left 130, a magnetic conduction plate right 140 and a lower magnetic pole 150. Wherein the upper poles 110, 120 are formed by welding or fastening the upper pole yoke plate 111 and the upper pole core module 112. The lower pole 150 is formed by welding or fastening and connecting two symmetrical lower pole yoke plates 151 and lower pole core modules 152, and water baffles 153 on both sides thereof. The upper magnetic pole core module 112 and the lower magnetic pole core module 152 vertically correspond, water baffles 153 are arranged on two sides of the upper magnetic pole core module 112 and the lower magnetic pole core module 152, a semi-closed arc space with two ends open along the arc direction is formed between the upper magnetic pole core module 112, the lower magnetic pole core module 152 and the water baffles 153, and a very strong background magnetic field is generated when the wet high-gradient high-intensity magnetic separator works, and the space is the separation space.

The core modules 112, 152 are divided into 3 corrosion protection classes, and different corrosion protection treatments are respectively carried out on all positions of the surfaces of the core modules 112, 152, which are contacted with the ore pulp. Wherein the first grade is a metal surface without any special treatment; the second grade is that the surface is sprayed with antirust paint or other kinds of anticorrosive coatings; the third level is to add a replaceable sacrificial anode on the basis of the second level. In addition, the upper pole core module 112 is further provided with a configuration of rounding the peripheral acute angle of the ore flowing gap and adding non-magnetic conductive stainless steel magnetism isolating treatment than the lower pole core module 152.

The coil 2 surrounds the lower pole core module 152 and is positioned above the lower pole yoke plate 151. The coil 2 is composed of a coil housing 210 and a coil winding 220, and an insulating coolant 230 contained in the coil housing 210 to submerge the coil winding 220. The coil housing 210 is further formed by an inner peripheral plate 211, an upper magnetic conductive plate 212, a lower magnetic conductive plate 213, and an outer peripheral plate 214. Auxiliary structures such as a conservator and a junction box are arranged on the outer side of the coil shell. The inner peripheral plate 211 of the coil housing 210 is made of a non-magnetic steel plate, and the upper magnetic plate 212, the lower magnetic plate 213, and the outer peripheral plate 214 are made of a high magnetic steel plate. The coil winding 220 is disposed in the coil housing 210, and the coil winding 220 and the coil housing 210 are spaced apart by an insulating strip 240, so that the complete insulation between the coil winding 220 and the coil housing 210 is ensured, and a flowing channel of insulating cooling liquid is preset. The coil winding 220 is also internally lined with insulating strips 240 during winding, and insulating coolant flow channels are likewise provided in the winding. A cooling fluid inlet 215 is formed at one end of the lower portion of the coil housing 210, and a cooling fluid outlet 216 is formed at the end of the upper portion of the coil housing 210 away from the cooling fluid inlet 215. The insulating coolant 230 flows into the coil housing 210 through the coolant inlet 215, flows through the insulating coolant channels preset in the coil winding 220 and between the coil winding 220 and the coil housing 210, performs sufficient heat exchange with the coil winding 220, and flows out through the coolant outlet 216. Wherein a shunt cavity 217 is arranged between the cooling liquid inlet 215 and the coil winding 220, and a confluence cavity 218 is arranged between the cooling liquid outlet 216 and the coil winding 220.

The heat exchange device 3 is arranged at any position outside the coil 2, and the heat exchange device 3 consists of a pipeline 310, a pump 320 and a heat exchanger 330. Wherein the inlet of the pump 320 is connected to the coil coolant outlet 216 via line 310, the outlet of the pump 320 is connected to the heat exchanger 330, and the other end of the heat exchanger 330 is connected to the coil coolant inlet 215. The heat exchanger 330 may be any conventional closed cycle heat exchanger, depending on the operating conditions in the field. A drain valve 340 is provided between the pump 320 and the coolant outlet 216 of the coil, and the outlet of the drain valve 340 is provided at the lowest position of the insulating coolant 230. The valve can be used for draining the insulating cooling liquid 230 in the coil 2 and the heat exchange device 3, and can be matched with the pump 320 to inject the insulating cooling liquid 230 into the coil 2 and the heat exchange device 3.

The swivel 4 is located directly above the lower pole core module 152. Wherein the swivel 4 is comprised of a swivel frame 410 and a media cartridge module 420. Swivel frame 410 is composed of hub 411, web 412, support ring 413, and armature 414. Because of the magnetic field design requirements (to avoid magnetic shorting), the support ring 413 and the frame 414 are made of non-magnetically conductive stainless steel, and the frame 414 and the support ring 413 are separated from each other by a few small spaces on the swivel frame 410 for fixing the media cartridge module 420. The swivel frame 410 is connected to the swivel driving part 5 through the web 412 and the hub 411, and these small spaces for fixing the media cassette module 420 sequentially enter and leave the sorting space by the driving of the swivel driving part 5.

The media box modules 420 are installed between two circumferentially adjacent frameworks 414, except that the small wet high-gradient strong magnetic separator adopts a single-row of media box modules 420, the media box modules 420 on two sides of the web 412 are arranged in an equal amount in a staggered manner, i.e. the number of the media boxes on the left side and the right side of the web is the same, and when each media box module 420 just begins to enter the separation space, a corresponding media box module 420 is in a state of entering half of the separation space.

The media cassette module 420 is comprised of two or more non-magnetically permeable frame plates 421 and a high magnetically permeable media 422 positioned between the non-magnetically permeable frame plates 421. The media box module 420 is further divided into a plurality of forms according to the granularity of the materials in the sorting pulp, the content of the magnetic materials in the materials and the granularity distribution of the magnetic materials in the use site. Classifying materials or forms, the high permeability media 422 includes both rod media and mesh media, as well as steel wool or any other form of high permeability soft magnetic material that can be filled between the non-permeable frame plates 421 and will ultimately be placed onto the swivel frame 410 for generating an induced magnetic field in a wet high gradient high intensity magnetic separator; classified from the arrangement, the high permeability media 422 include both a tight arrangement and a loose arrangement, including both a uniform arrangement of media gaps and a gradient increasing or decreasing arrangement of media gaps, including both a single form of permeability media arrangement and a multiple form of permeability media mix arrangement. For the case of pulp with corrosiveness, the media box modules 420 are further classified into 3 corrosion protection classes: the first grade high permeability medium 422 is of corrosion resistant material; the second level performs overall coating treatment on the medium box module 420 on the basis of the first level; the third grade is added with the sacrificial anode for corrosion prevention based on the second grade, and the sacrificial anode can be replaced at any time, so that the grade has stronger corrosion prevention capability. Finally, different medium box modules 420 are provided for the wet high-gradient high-intensity magnetic separator according to different working conditions.

The middle shaft 510 in the swivel driving part 5 passes through the swivel 4 from the hub 411, the middle shaft 510 is connected with the hub 411 by a magnetism isolating expansion sleeve 520, and the torque transmitted by the middle shaft 510 can be transmitted to the swivel 4 through the magnetism isolating expansion sleeve 520. The middle shaft bearing seat 530 is located above and outside the upper magnetic poles 110 and 120, supports the middle shaft 510, and keeps a distance of less than 10mm between the swivel 4 and the upper magnetic pole core module 112 and the lower magnetic pole core module 152, so that friction and scraping between the swivel 4 and the upper magnetic pole core module 112 and the lower magnetic pole core module 152 can not occur, and the sorting space can be fully utilized. One end of the central shaft 510 is connected to a gear transmission 540, and the other end of the gear transmission 540 is connected to a speed reducer 560, so that torque is transmitted to the swivel 4 when the motor 550 drives the speed reducer 560 to operate.

The middle shaft 510 is connected with the hub 411 by the magnetism isolating expansion sleeve 520, so that the transmission of a magnetic field on the web 412 along the axial middle shaft bearing 531, the motor 550 and the speed reducer 560 can be reduced, the middle shaft bearing pedestal 530 is isolated from the upper magnetic poles 110 and 120 by the non-magnetic conductive stainless steel backing plates, the magnetic field throughput in the middle shaft bearing 531, the swivel driving motor 550 and the speed reducer 560 is further reduced, and the service lives of the middle shaft bearing 531, the swivel driving motor 550 and the speed reducer 560 are prolonged.

The right side of the middle shaft 510 at the upper parts of the upper magnetic poles 110 and 120 is provided with a mineral feeding hopper 6, and the left side of the middle shaft 510 is provided with a water flushing hopper 7. The two sides of the web 412 are provided with a feeding bucket 6 and a flushing bucket 7, and the feeding bucket 6 and the flushing bucket 7 on the two sides are symmetrical with respect to the web 412. A flow gap 113 for guiding ore pulp into the separation area is arranged at the upper magnetic pole core module 112 connected with the ore feeding hopper 6. The feed ore pulp enters the wet high-gradient strong magnetic separator from the feed hopper 6 and flows into the swivel 4 positioned in the separation zone through the ore flowing gap 113. Rinse water is arranged in the water flushing bucket 7, a running water gap 114 for the rinse water to enter a sorting area is arranged at the upper magnetic pole core module 112 connected with the water flushing bucket 7, and the rinse water can selectively flush out minerals carried in the captured magnetic materials and minerals with insufficient purity from the medium box module 420 to enter the nonmagnetic material collecting bucket 11, so that purer magnetic materials are obtained.

The dump tank 8 is located slightly to the left above the swivel 4 and spans the swivel 4 in the swivel axial direction. The ore discharging water tank 8 is internally provided with an ore discharging water spraying module 810, and different ore discharging water spraying modes can be formed by changing different water spraying modules 810, namely, the water outlet position/water spraying angle of water spraying and the water spraying amount when the same ore discharging water pressure are changed. The two sides of the ore discharging water tank 8 are respectively provided with a rinse water outlet 820 and a flowing water auxiliary outlet 830, so that all water feeding ports using industrial circulating water are unified to the water feeding ports of the ore discharging water tank 8. The discharge water tank 8 washes out all the material adsorbed in the media box module 420 by spraying discharge water toward the swivel 4. The lower part of the rinsing water outlet 820 is connected to the rinsing water separator 840 in the rinsing bucket 7 through a water pipe, rinsing water can be uniformly supplied into the rinsing bucket 7 through the distribution of the rinsing water separator 840, and then flows to the swivel in the sorting area through a mineral flowing gap, so that minerals which are carried in the captured magnetic materials and are not enough in purity can be selectively washed away from the medium box module, and enter the non-magnetic material collecting bucket, and therefore purer magnetic materials are obtained. The outlet pipeline of the auxiliary flowing water outlet 830 extends to a position with gentle slope in the magnetic material collecting hopper 9, and the outlet direction of the auxiliary flowing water is controlled to be along the discharging flowing direction. For materials which are fast in sedimentation and easy to accumulate, a small amount of auxiliary flowing water can be added to prevent the materials from accumulating.

The magnetic material collecting hopper 9 is composed of three parts, namely a collecting part 910, a diversion part 920 and a summarizing part 930. Wherein, the collecting portion 910 and the guiding portion 920 are two components symmetrical with respect to the web 412 and are respectively located at two sides of the web 412, and the collecting portion 930 is one component symmetrical with respect to the center of the web 412. The collecting portion 910 is located above the upper pole core module 112 from the left side of the water bucket 7 inside the swivel 4 to the right lower portion of the dump tank 8 inside the swivel 4. The summarizing part 930 is located at the lower part of the left coil 2 of the yoke 1. The diversion section 920 connects the outlet of the collection section 910 with both ends of the collection section 930. All the magnetic materials which leave the sorting area along with the swivel 4 and are brought above the collecting part 910 can be all received and collected to the collecting part 930 and then uniformly discharged out of the wet high-gradient high-intensity magnetic separator.

The middle bucket 10 is positioned to the left of the lower pole core module 152 and is positioned against the lower pole core module 152. The material receiving opening is positioned at the position, outside the swivel 4, of the left lower side and connected with the magnetic yoke 1 to the outer part of the leftmost side of the swivel 4, and the width of the material receiving opening axially crosses the swivel 4 along the swivel 4. Material that leaves the sorting area with the swivel 4 but fails to swivel to above the magnetic material collection hopper 9 can be collected.

The non-magnetic material collecting hopper 11 is installed at the lower part of the magnetic yoke 1 and connected with the lower part of the magnetic yoke 1, and can completely catch the ore pulp flowing out of the lower magnetic pole core module 152. The non-magnetic material collection hopper 11 is divided into two non-communicating collection sections, a right collection section 1110 is located below the feed hopper 6 and the central shaft 510, and a left collection section 1120 is located below the flushing hopper 7. The materials collected in the two parts of spaces are non-magnetic materials, most of the non-magnetic materials after fed materials are separated by the swivel 4 enter the right collecting section 1110, and the small parts rotate to the upper part of the left collecting section 1120 along with the swivel, and flow into the left collecting section 1120 under the action of rinse water and the action of gravity when discharged from the liquid level of the separating section. One or more non-magnetic material discharging valves 1130 are respectively arranged at the bottoms of the two collecting spaces, and the height of the pulp liquid level of the sorting area can be controlled by adjusting the opening of the valves. The nonmagnetic material collecting hopper 11 can be firmly arranged on the equipment bracket after being disassembled from the lower magnetic pole iron core module 152, so that the wet-process high-gradient strong magnetic separator is convenient to disassemble, split and transport and reassemble.

The right collecting section of the non-magnetic material collecting hopper is connected with a pulsation mechanism 12. The pulsation mechanism 12 is composed of a pulsation case 1210, a driving pulley group 1220, a pulsation motor 1230, a pulsation pushing plate 1240 and a rubber flexible connection 1250. The pulsation case 1210 is internally provided with an eccentric wheel module 1211, and the pulsation motor 1230 drives the eccentric wheel module 1211 in the pulsation case 1210 to rotate after being decelerated by the driving belt pulley group 1220, so that the circular motion generated by the motor is converted into left-right linear reciprocating motion. The left end of the pulsation box 1210 is provided with a push rod 1212, one end of the push rod 1212 is connected with the eccentric wheel module 1211 through a bearing, the other end of the push rod 1212 is connected with the pulsation push plate 1240, and the push rod 1212 transmits the reciprocating force converted by the eccentric wheel 1211 in the pulsation box to the pulsation push plate 1240. The outside of the pulsation pushing plate 1240 is in sealing connection with the right collecting section 1110 of the non-magnetic material collecting hopper through a rubber flexible connection 1250. When the pulsation box is operated, the left and right reciprocating force can be transmitted to the ore pulp in the right collecting section 1110 through the pulsation pushing plate 1240, so that the ore pulp can generate pulsation oscillation, and the pulsation oscillation can be extended into the sorting section along the ore pulp.

In order to ensure the stable operation and safe operation of the equipment, multiple safety protection is arranged inside the equipment.

Coarse grain material separating sieve plate 14 is arranged in the ore hopper 6 or the same functional unit is arranged before feeding, so that the trafficability and sorting index of the materials are prevented from being influenced by blockage caused by large grain materials entering the upper magnetic pole iron core module 112 and the medium box module 420.

The slag separation box 15 of the ore discharge water tank 8 is additionally arranged in front of the ore discharge water tank 8, and an inclined slag separation sieve plate 1510 is arranged in the slag separation box 15 of the ore discharge water, so that large-particle impurities in the ore discharge water can be prevented from entering the ore discharge water tank 8 to block the water spray hole of the ore discharge water to influence the ore discharge effect and the sorting index. And a manual or automatic slag discharging valve 1520 is arranged at the bottom of the slag separating box 15 of the ore discharging water, so that the impurity particles isolated in the slag separating box 15 of the ore discharging water can be cleaned manually or automatically at regular intervals.

The insulating coolant 230 in the coil 2 can sufficiently carry heat generated when the coil winding 220 is energized to the heat exchanging device 3 after flowing through the coil winding 220, and discharge the heat through the heat exchanger 330. The insulating coolant 230 is in closed cycle throughout the process, free from external contamination, and all heat exchange with the outside is completed at the heat exchanger 330.

The middle shaft 510 is connected with the swivel 4 by adopting two narrow magnetism isolating expansion sleeves 520, so that the contact area between the middle shaft 510 and the swivel 4 is reduced under the condition of ensuring torque transmission, and the magnetic field is further reduced to be transmitted through the swivel web 412, the middle shaft 510, the middle shaft bearing 531, the swivel driving motor 550 and the speed reducer 560; the bottom bracket bearing seat 530, the swivel drive motor 550 and the speed reducer 560 are not padded with a magnetic-conductive stainless steel backing plate, so that the magnetic field throughput in the bottom bracket bearing 531, the swivel drive motor 550 and the speed reducer 560 is further reduced, and the service lives of the bottom bracket bearing 531, the swivel drive motor 550 and the speed reducer 560 are prolonged.

The front ends of the swivel drive motor 550 and the pulsation motor 1230 are respectively provided with a motor protector 16, and when overcurrent or open-phase is detected, the motor protector can timely protect the motor protector and send out an alarm.

Temperature probes 17 are arranged on the coil cooling liquid inlet pipeline 310, near the cooling liquid outlet 216 and at the top layer of the insulating cooling liquid 230, the temperature and the temperature difference of the insulating cooling liquid at the inlet and outlet of the coil are monitored in real time, and fault alarms are sent out when the temperature is too high or the temperature difference is too large; the coil coolant line 310 is provided with a flow switch 18 to monitor the flow state of the insulating coolant 230, and a fault alarm is given when the flow rate does not meet a set requirement.

All the operating parts of the equipment are covered with a protective cover 19, and an observation window 1910 is arranged at a position where the operating condition needs to be observed. The observation window adopts steel mesh protection, ensures that personnel can't touch the operation part.

In order to realize higher adaptability of the wet high-gradient strong magnetic separator, a plurality of parameters of the wet high-gradient strong magnetic separator can be correspondingly adjusted.

The exciting current of the wet high-gradient strong magnetic separator coil 2 is adjusted by inputting preset current through the current setting unit 2011, then the current setting unit 2010 controls the thyristor (or diode combined IGBT) rectifying module 20 to convert industrial electricity into preset direct current to be input into the coil 2, the Hall element or other similar functional elements 21 are arranged in the process of inputting current into the coil 2 to monitor the current and feed back to the constant current controller, and then the detected value and the preset value are compared through the constant current controller 2010 and then the output voltage is correspondingly adjusted, so that the current of the wet high-gradient strong magnetic separator input coil 2 is ensured to be consistent with the preset current of the current setting unit 2011.

The rotating speed of the rotating ring 4 of the wet high-gradient high-intensity magnetic separator and the pulsation frequency of the pulsation box 1210 are respectively realized by changing the output frequencies of the rotating ring frequency converter 22 and the pulsation frequency converter 23 in the regulating system.

The pulsation amplitude of the wet high-gradient strong magnetic separator is realized by adjusting the eccentric amount of the eccentric wheel module 1211 in the pulsation box.

The liquid level is achieved by manually or automatically adjusting the opening of one or more non-magnetic material discharge valves 1130 at the bottom of the non-magnetic material collection hopper 11 by monitoring the liquid level in the liquid level observation hopper 13 with a liquid level gauge 24.

The amount of the rinsing water is achieved by adjusting the opening of the rinsing water outlet 820 valve provided at both sides of the discharge tank 8, and is uniformly supplied into the flushing tank 7 through the rinsing water separator 840 provided in the flushing tank 7.

The specific working process of the wet high-gradient strong magnetic separator provided by the invention is as follows:

when the coil 2 is energized and excited, under the combined action of the magnet yoke 1, a background magnetic field and a sorting area which can magnetize soft magnetic materials are formed between the two cambered surfaces of the upper magnetic pole iron core module 112 and the lower magnetic pole iron core module 152 and the two water baffles.

The material flows in from the feed hopper 6 and is first separated from the coarse particles in the feed material by the coarse particle screen plate 14 to ensure that the feed material does not clog the core and media box module 420. The material passes through the coarse grain material separating screen plate 14 and then flows through the ore flowing gap 113 of the upper magnetic pole core module 112 and then enters the swivel 4 positioned in the separation area. The plurality of high permeability media 422 within the media cartridge module 420 are magnetized by the magnetic field in the background of the sorting region and form a small field of magnetization at the near surface of each magnetic media. When the material flows through the magnetizing field region, magnetic particles in the material are adsorbed on the surface of the high magnetic conductive medium 422, and particles with insufficient magnetic purity and no magnetic particles freely pass through the medium box module 420 and then flow through the ore flowing gap of the lower magnetic pole core module 152 to enter the non-magnetic material collecting hopper 11, and finally are discharged from the wet high gradient high intensity magnetic separator through the non-magnetic material discharging valve 1130. The magnetic particles adsorbed on the surface of the high magnetic conductive medium 422 rotate clockwise along with the swivel 4, firstly, the particles with weak adsorption and the residual ore pulp in the medium box module 420 flow out of the swivel and flow into the middle ore bucket 10, other magnetic particle materials continue to run to the upper part of the collecting part 910 of the magnetic material collecting bucket 9 along with the swivel 4, are all flushed into the collecting part 910 under the action of gravity and the ore unloading water tank 8, are finally gathered in the gathering part 930 and are discharged from the gathering part 930. The feed materials are subjected to the pulsating vibration force generated by the pulsating box 1210 in the separation zone, and the whole separation process is always in a loose state, so that the separation of magnetic and non-magnetic particle materials is facilitated.

Based on the wet high-gradient strong magnetic separator, the functions of replacing part of the parts or removing part of the parts or improving the parts can be achieved, so that the forced oil cooling vertical swivel induced wet pulse strong magnetic separator can be more suitable or applied.

Forced oil cooling vertical swivel induced wet pulsating strong magnetic separator mainly comprises seven parts: excitation system, sorting system, pulsation system, collecting system, braced system, actuating system, protection system. The excitation system provides a working magnetic field for the forced oil cooling vertical swivel induced wet pulsating strong magnetic separator; the separation system realizes the continuous separation of the tailings; the pulsation system provides pulsation effect for the pulp in the forced oil cooling vertical swivel induced wet pulsation strong magnetic separator; the collecting system plays roles of feeding, flushing, collecting the tailings and observing and adjusting the liquid level; the support system plays a role of supporting equipment and is fixedly connected with the site foundation; the driving system provides power for the swivel and pulsation of the device; the protection system plays a role in protecting personnel and equipment. The forced oil cooling vertical rotating ring induction wet pulsating strong magnetic separator is one kind of electromagnetic mineral separating equipment for wet concentration of magnetic mineral and impurity eliminating and purifying of non-magnetic mineral.

The forced oil cooling vertical swivel induction wet pulsating high intensity magnetic separator is continuously improved and perfected through years of mineral separation practice, has higher separation background field intensity, and solves the problems of high coil temperature, uneven heat dissipation, easy stacking of upper magnetic poles, easy abrasion of concentrate collecting grooves, inconvenient liquid level adjustment and the like.

In the forced oil cooling vertical rotating ring induction wet pulsating high intensity magnetic separator provided by the invention, materials are fed from the inner side of the rotating ring, flow downwards through the rotating ring through an upper magnetic pole, and the magnetic materials in the materials are adsorbed on the rotating ring and are brought to the upper part along with the rotation of the rotating ring to leave a magnetic field; the ore discharging water washes the swivel from the outer side above the swivel, and collects the magnetic materials to a magnetic material collecting bucket; the nonmagnetic material is discharged from the lower part of the equipment through a nonmagnetic material collecting hopper; the reciprocating motion of the piston of the pulsation mechanism causes the material in the sorting area to be in a loose state. The magnetic yoke is provided with a flowing ore gap along the magnetic field direction at the center, the flowing ore gaps are distributed along the magnetic field, and no redundant air gap exists on the magnetic conduction loop, so that the field intensity of the separation area is greatly improved; the magnetic yoke is formed by splicing a plurality of soft magnetic materials, the structure of a punching through long bolt on the traditional soft magnetic materials is abandoned by connecting the spliced parts, the connecting lugs of the upper magnetic pole and the lower magnetic pole are adopted for connecting, and meanwhile, the connecting parts are provided with positioning structures, so that the assembling difficulty of the magnetic yoke is greatly reduced; the magnetic yoke is provided with a lower magnetic pole, the lower magnetic pole is provided with a water baffle, the water baffle is made of non-magnetic materials at the working air gap part, and after the water baffle is matched with the lower magnetic pole, the height of the liquid level of the ore pulp can be raised, so that the lower part of the swivel is immersed below the liquid level of the ore pulp.

The following further describes the forced oil cooling vertical rotary ring induction wet pulsating high intensity magnetic separator according to fig. 23-32, wherein the excitation system of the forced oil cooling vertical rotary ring induction wet pulsating high intensity magnetic separator is composed of a magnetic yoke and a coil assembly, the coil assembly is composed of a coil and a heat exchange device, and the coil is placed in the magnetic yoke around the upper half part of the lower magnetic pole 150.

The magnetic yoke is formed by buckling two mountain-shaped yokes, two sides of the mountain are contacted, an air gap is reserved in the middle of the mountain, the air gap is arc-shaped, and the magnetic yoke gathers a magnetic field generated by the coil to the middle air gap to form a working background magnetic field. The yoke mainly comprises upper magnetic poles (110, 120), lower magnetic poles 150, magnetic guide plates (130, 140), water baffle 153 and upper and lower magnetic pole connecting lugs 160. As shown in fig. 25, the upper magnetic poles (110, 120) and the lower magnetic pole 150 are fixed together by the magnetic conductive plates (130, 140), and the water shield 153 is fixed to the lower magnetic pole 150, and the magnetic conductive circuit is shown by an arrow in the figure. The upper magnetic poles (110, 120) and the lower magnetic poles 150 are provided with material passing holes which are distributed along the direction of magnetic force lines, and no redundant air gap exists on the magnetic conduction loop; the lower surfaces of the upper magnetic poles (110, 120) and the upper surface of the lower magnetic pole 150 are arc surfaces, and a working air gap is formed between the upper surfaces; the upper magnetic poles (110, 120) are formed by two parts which are bilaterally symmetrical, the middle gap is a movable channel of the web 412, and the ore flowing gap of the upper magnetic poles (110, 120) is of an open structure at the part close to the web 412, so that material stacking leaked along the web 412 is effectively prevented. The magnetic conduction plates (130, 140) play a role of connecting the upper magnetic poles (110, 120) with the lower magnetic poles 150 and conducting magnetic, and are connected through the upper and lower magnetic pole connecting lugs 160 by bolts, and conical positioning columns are arranged on the upper and lower magnetic pole connecting lugs 160, so that positioning and installation are facilitated. The water baffle 153 is fixed on the upper magnetic poles (110, 120) and can effectively improve the pulp liquid level when the equipment works.

The coil is formed by winding electromagnetic wires, generates a magnetic field after being electrified, and finally gathers the magnetic field to the middle air gap of the magnetic yoke under the action of the magnetic yoke. The coil mainly comprises a coil winding 220, a coil housing 210, an insulating strip 240, an insulating strip support 241 and an expansion tank 250. The coil winding 220 is disposed in the coil housing 210, and the insulation bar support 241 functions to support the coil winding 220 and to fix the insulation bar 240, and the expansion tank 250 is installed above the coil housing 210. The coil winding 220 has a multi-layer structure, and the layers are separated by insulating strips 240; the insulating strip support 241 is in a strip shape, is hollowed in the middle, has a mountain-shaped concave-convex structure on the periphery, is uniformly distributed around the coil winding 220, and the insulating strip 240 is clamped in the middle of the insulating strip support 241 and is positioned at the protruding part of the mountain-shaped structure; the coil housing 210 is of a cavity structure, insulating cooling liquid is filled in the housing, and the insulating strip support 241 is fixed with the upper surface and the lower surface of the inner side of the coil housing 210 to form a structure for supporting the coil winding 220; the expansion tank 250 integrates the functions of expansion buffering, coil outgoing, and dryer filtration.

The heat exchanger 330 is in communication with the coil via a pipeline, and an insulating coolant circulates between the coil and the heat exchanger 330 to carry heat generated by the coil to the outside, so that the coil operates at a reasonable temperature. The heat exchange means is located below the side of the coil and mainly comprises a pump 320 and a heat exchanger 330. The pump 320 and the heat exchanger 330 are connected together through a pipeline and are connected with the coil housing 210, the pump 320 pumps out the hot insulating cooling liquid from the upper side of the coil, the insulating cooling liquid is cooled by the heat exchanger 330, and the cooled insulating cooling liquid is returned to the coil from the lower side, so that forced circulation cooling is formed.

The sorting system consists of a swivel and an ore discharging device. The rotary ring main body is in a ring shape, the lower part of the rotary ring main body continuously rotates around the shaft under the action of a driving force through an intermediate air gap of the magnetic yoke, and magnetic minerals are brought out of the magnetic field, so that the separation of the magnetic minerals and non-mineral minerals is realized. The swivel mainly comprises a swivel frame 410, a middle shaft 510 and a medium box module 420. The swivel frame 410 is a rotating wheel structure, and is hollow out to form a space for installing the medium box module 420; the web 412 is a metal plate with a hole in the center, which is welded in the middle of the swivel frame 410; the middle shaft 510 passes through the center hole of the web 412 and is fixed with the web through an expanding sleeve, bearing seats are arranged at two sides of the middle shaft 510, the bearings are located on the upper magnetic poles (110 and 120), and a transmission large gear is arranged at one end of the middle shaft 510; the media case module 420 is a case structure comprising a high magnetic conductive material, and is fixed on the swivel frame 410, and the unit materials constituting the case may be in various forms such as a bar shape, a screw bar shape, a polygonal shape, a net shape, and the like.

The ore discharging device is arranged on the outer side of the upper part of the swivel main body, is externally connected with a water supply pipe, sprays water above the swivel main body, and collects the magnetic minerals adsorbed on the swivel main body into the magnetic material collecting hopper. The ore discharging device mainly comprises an ore discharging water slag separating box 15 and an ore discharging water box 8. The ore discharging water slag separating box 15 is of a box body structure, connecting flanges are arranged at two ends of the box body and are respectively connected with the ore discharging water box 8 and an external water supply pipe, an inclined filter screen is arranged in the ore discharging water slag separating box 15, and impurities in water are filtered to the lower part of the box body and discharged. The pulsation system periodically changes the volume of a collecting interval on the right side of the non-magnetic material collecting hopper, so that ore pulp in the equipment performs reciprocating motion, and the purpose of dispersing minerals in the ore pulp is achieved. The pulsation system is composed of a pulsation tank 1210, a pulsation pushing plate 1240 and a rubber flexible connection 1250. The pulsation case 1210 has a case structure, a push rod is arranged at the front end of the case structure, an eccentric wheel is arranged in the case structure, a driving belt pulley group is arranged on the side surface of the case body, the driving belt pulley group can drive the eccentric wheel to operate, and reciprocating motion is output on the push rod. The pulsation pushing plate 1240 is a circular metal plate, and the center of the metal plate is connected with the pushing rod of the pulsation tank 1210. The rubber flexible connection 1250 is made of rubber flexible material, is in a circular ring shape, the circular ring body is in a U shape, two sides of the U shape are respectively an outer ring surface and an inner ring surface of the circular ring, wherein the U-shaped outer ring surface is fixed with a collecting section on the right side of the non-magnetic material collecting hopper, and the U-shaped inner ring surface is fixed with the pulsation pushing plate 1240.

The collecting system provides the functions of ore, water supply, magnetic and non-magnetic mineral collection, liquid level observation and the like for the machine. The collecting system is composed of a feeding hopper 6, a flushing hopper 7, a collecting part 910, a diversion part 920, a summarizing part 930, a non-magnetic material collecting hopper 11, a valve adjusting rod 1131 and a liquid level observing hopper 13. The ore feeding hopper 6 and the flushing hopper 7 are welded box structures and are arranged on the upper magnetic poles (110, 120) and communicated with the material passing channels of the upper magnetic poles (110, 120). The magnetic material collecting hopper is of a tank structure and is symmetrically arranged above the inner side of the swivel, the lower surface of the magnetic material collecting hopper forms a certain included angle with the horizontal plane, and a discharge hole is formed in the lower position of the lower surface of the magnetic material collecting hopper. The diversion part 920 is a groove body structure and is arranged below the discharge hole of the magnetic material collecting hopper, and concentrate is conveyed into the summarizing part 930 through a pipeline at the tail part of the diversion part 920. As shown in fig. 31, the collecting portion 930 has a groove structure, and the bottom surface thereof is composed of inclined surfaces on both sides and a middle discharge port. The inclined plane is fixed with a plurality of risers from top to bottom, and the height of first riser is higher than other risers, and this kind of structure can make ore pulp form the sediment when the bottom surface flows, forms natural wearing layer, prolongs the life in concentrate gathering groove. The non-magnetic material collecting hopper 11 is arranged below the material passing hole of the lower magnetic pole 150, the hopper body forms a closing-in structure from top to bottom, and an adjustable valve is arranged below the hopper body. The valve adjusting rod 1131 is an adjusting mechanism composed of a hand wheel, an extension rod and a flexible shaft, and is arranged on the side surface of the equipment, so that a valve adjusting point of the nonmagnetic material collecting bucket 11 extends to the upper part of the equipment. The liquid level observation bucket 13 is of a box body structure, the upper part of the box body is open, a vertical plate is arranged in the middle of the bottom surface of the box body, the bottom surfaces of two sides of the vertical plate are respectively provided with an outlet, one outlet is communicated with a collecting zone on the right side of the non-magnetic material collecting bucket, and the box body is integrally arranged on the side surface of the equipment and is adjacent to an adjusting hand wheel of the valve adjusting rod 1131.

The support system functions to support the apparatus and to integrally secure the apparatus to the foundation in place. The pulse box mainly comprises a bracket 25, wherein the bracket 25 is formed by welding profile steel after being optimally designed, the bottom of the bracket is square, and a trapezoid support is protruded on one side of the square for installing the pulse box 1210; four upright posts are erected on the square frame on the bottom surface of the bracket 25, reinforced steel sections are arranged on two sides of each upright post and used for increasing the supporting strength, the upper surfaces of the four upright posts are positioned on the same plane, and the lower magnetic poles 150 are arranged on the four upright posts.

The driving system converts external electric energy into kinetic energy of motion and is a power source of the rotating component. The driving system is composed of a swivel driving part 5, a pulsation motor 1230, a driving belt pulley group and an electric control part. The swivel driving part 5 is composed of a speed reducer, a swivel driving motor and a gear transmission, wherein a pinion in the gear transmission is sleeved on an output shaft of the speed reducer, the pinion in the gear transmission is meshed with a large gear on the tail end of the middle shaft 510, and when the swivel driving motor rotates, the large gear can be driven to rotate through the speed reducer, so that the swivel is driven to rotate. The center of one end of the driving belt pulley set is sleeved on the output shaft of the pulsation motor 1230, and the driving belt pulley set outputs the power output by the pulsation motor 1230 to the pulsation box 1210 through a built-in driving belt to drive the eccentric wheel to rotate.

The circuit breaker QF1 of the electric control part is closed, the main circuit is electrified, and the current regulator PCB is electrified; when the breaker QF2 is closed, the frequency converter BP1 is electrified, and the intermediate relay KA1 is closed, the swivel motor M1 is electrified to operate, and the output rotating speed of the swivel motor M1 can be regulated by regulating the frequency converter BP 1; when the breaker QF3 is closed, the frequency converter BP2 is powered on, and the intermediate relay KA2 is closed, the pulse motor M2 is powered on to operate, and the output rotating speed of the swivel motor M2 can be adjusted by adjusting the frequency converter BP 2; when the breaker QF4 is closed and the alternating current contactor KM2 is closed, the oil pump motor M3 is powered on to operate, and when overload overcurrent occurs to the oil pump motor M3, the thermal overload relay FR1 is disconnected, and the power supply of the oil pump motor M3 is cut off to play a role in protection; when the breaker QF5 is closed and the alternating current contactor KM1 is closed, the thyristor rectifying module VC1 rectifies three-phase alternating current into direct current to pass through the exciting coil YA, and the current regulator PCB can adjust the conduction state of the thyristor rectifying module VC1 so as to adjust the current flowing through the exciting coil YA.

The protection system is made of thin steel plates through welding and bending, and isolates the running parts of the equipment from the outside, so that the effect of protecting the equipment and personal safety is achieved. The protective system shield 19 comprises a swivel cover, a gear cover and a pulley cover. The swivel cover is divided into a left part and a right part, each part is formed by welding an arc-shaped plate and two fan-shaped plates, an arc-shaped groove structure is formed, the left part and the right part are positioned at two sides of the water flushing bucket 7, and the left part and the right part are reversely buckled on the swivel main body; the gear cover is of an unequal notch structure, holes are formed in two circle centers of the notch, the two holes are not in the same plane, the motor shaft and the gear shaft pass through, and the gear cover completely covers the gear inside; the pulley cover is of an unequal notch structure, holes are formed in two circle centers of the notch, the two holes are located on the same plane, the power supply shaft and the pulley shaft pass through, and the pulley cover completely covers the pulley inside.

The traditional strong magnetic separator has the following problems: when the device works, one side of the upper magnetic pole, which is close to the swivel, is of a closed structure, so that materials leaked from the upper part are accumulated on the upper magnetic pole; when the magnetic yoke is installed, long bolts penetrate through the yoke for installation, so that the positioning and the installation are inconvenient; the water baffle is made of magnetic conduction materials, so that partial magnetic flux is shielded; the coil adopts a cooling liquid horizontal flow mode, so that uneven heat dissipation is caused, and the service life of the coil is short; the bottom surface of the concentrate collecting tank is a plane, and the ore pulp is easy to wear during rapid impact and flow; the tailing bucket valve is adjusted at the lower part of the equipment, so that the tailing bucket valve can not be adjusted while observing the liquid level condition in the overflow bucket, and the adjustment is very inconvenient. The forced oil cooling vertical swivel induction wet pulsating high intensity magnetic separator aims at the defects and makes the following improvements: the side of the upper magnetic poles (110, 120) close to the swivel is changed into an opening, and materials leaked from the upper side directly flow back to the equipment from the opening, so that the materials are effectively prevented from accumulating on the upper magnetic poles (110, 120); the upper magnetic pole (110, 120), the lower magnetic pole (150) and the magnetic conduction plates (130, 140) are connected by bolts through upper and lower magnetic pole connecting lugs (160), and a conical positioning structure is added, so that the installation of the magnetic yoke is greatly facilitated; the water baffle 153 is made of stainless steel, so that magnetic flux is utilized most effectively; the coil adopts a forced heat exchange mode to dissipate heat, the coil winding 220 is of a multi-layer structure, is soaked in insulating cooling liquid and is placed on the insulating strip support 241, the insulating cooling liquid in the coil flows from bottom to top, the insulating cooling liquid flowing out from the upper part enters the heat exchanger to be cooled, the cooled insulating cooling liquid enters the coil from the lower part, the flowing mode accords with the downward self-convection physical characteristic of the upward cooling liquid in the liquid, the heat dissipation uniformity is greatly improved, and the service life of the coil is prolonged; the summarizing part 930 is provided with a small vertical plate structure on the bottom surface of the tank body, and after the ore pulp flows for a long time, the ore pulp can be precipitated to form a natural wear-resistant layer, so that the service life of the tank body is prolonged; the regulating hand wheel of the valve regulating rod 1131 is positioned beside the liquid level observing hopper 13, and can observe the pulp liquid level condition in the liquid level observing hopper 13 and regulate the valve opening of the non-magnetic material collecting hopper 11, thereby greatly facilitating the regulation of equipment.

Further, the transfer ring of the forced oil cooling vertical transfer ring induction wet pulse strong magnetic separator preferably adopts a framework structure, the medium box module 420 is fixed on the transfer ring framework through bolts, and the transfer ring framework is made of stainless steel; the medium can be in the form of bar, polygon, net, tooth, screw thread, steel wool, etc.; the swivel center shaft is connected with the swivel by adopting an expansion sleeve structure; the ore feeding hoppers are symmetrically arranged on two sides of the swivel, and are arranged above the magnetic yoke material passing channel; the magnetic hoppers are symmetrically arranged on two sides of the inner side of the swivel, and the magnetic hopper on one side of the swivel can be one hopper body or a plurality of hopper bodies; the bottom surface of the magnetic hopper forms a certain angle with the horizontal plane, so that the self-flow of ore pulp in the magnetic hopper is realized; the magnetic hopper abandons the traditional pipeline ore-moving mode, adopts a trough body ore-moving mode, reduces the blocking condition of the magnetic hopper and is easy to clean; the unloading point is located above the magnetic hopper, and the unloading adopts a mode of flushing the magnetic conductive medium of the medium box module 420 on the swivel by fluid, wherein the fluid can be air, water or water and air mixture.

Further, the front end of the ore discharging device in the forced oil cooling vertical swivel induction wet pulsating strong magnetic separator is preferably provided with a slag separation filter device for filtering large particle impurities in ore discharging water; the coil adopts forced heat exchange and heat dissipation, the coil winding is of a multi-layer structure, the contact area between the winding and a heat exchange medium is increased, and the heat exchange efficiency is improved; the heat exchange medium flows in from one side of the coil and flows out from the other symmetrical side; the heat exchange medium may be an insulating coolant, air or water; when the coil is cooled by adopting insulating cooling liquid, the coil winding is directly soaked in the insulating cooling liquid, the coil is provided with insulating cooling liquid expansion boxes, the number of the expansion boxes can be one or more, and the expansion boxes are provided with structures such as a respirator, a junction box, a liquid level observation and the like; the pulsation box pushes the pulsation pushing plate to do reciprocating motion, and the pulsation pushing plate is connected with the right collecting section of the non-magnetic hopper through the soft rubber connection to seal the ore pulp in the non-magnetic hopper.

Still further, the pulsation box stroke and the pulsation frequency in the forced oil cooling vertical swivel induced wet pulsating high intensity magnetic separator are preferably adjustable items to adapt to different ore properties, the pulsation stroke refers to the amplitude of the reciprocating motion, and the pulsation frequency refers to the speed of the reciprocating motion. The non-magnetic hopper is positioned below the magnetic yoke, the valve is arranged below the hopper body, the opening of the valve is adjustable, and the liquid level height can be adjusted by adjusting the opening of the valve and the ore feeding amount. The side of the equipment is provided with a liquid level observing hopper which is communicated with the non-magnetic hopper, and the opening of a non-magnetic material discharging valve below the non-magnetic material discharging hopper can be manually or automatically adjusted so as to control the height of the ore pulp surface in the liquid level observing hopper. The valve of the non-magnetic hopper is provided with an extension rod, and the opening of the valve can be adjusted at the outer side of the equipment; the adjusting point can be transferred to the upper part of the equipment through a flexible shaft or other steering devices, and the liquid level height can be observed while the valve is adjusted. The swivel cover body covers all the swivel, so that the effect of protecting personal safety can be achieved; the connection between each part in the cover body adopts an inserted lap joint mode so as to prevent ore pulp from splashing. The cover body is provided with an observation window. The support is formed by welding profile steel, the support consists of a magnetic yoke support and a pulsation case support, the magnetic yoke support is connected with the pulsation case support in a welding or bolt fastening mode, and a positioning structure is arranged on the support.

Different parameters of the wet high-gradient strong magnetic separator or the forced oil cooling vertical rotating ring induction wet pulsating strong magnetic separator are adjusted and different component modules are replaced according to different materials to be selected and working conditions, so that the maximum adaptation with a use site is realized, and better and more stable sorting indexes are obtained.

The magnetic separator has the characteristics of reasonable and novel structure, safety, energy conservation and attractive appearance while ensuring good separation indexes.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims

1. The utility model provides a high gradient strong magnetic separator of wet process, its includes excitation system, selects separately collecting system and safety and isolation system, its characterized in that: the excitation system is used for providing a background magnetic field for sorting for the wet high-gradient strong magnetic separator; the separation and collection system is matched with a background magnetic field provided by the excitation system, magnetic materials and non-magnetic materials in ore pulp containing magnetic minerals are separated through magnetic separation, and the magnetic materials and the non-magnetic materials are collected to different collection areas respectively; the safety and isolation system is used for isolating granularity of materials fed into the wet high-gradient strong magnetic separator, isolating impurities in water, isolating pollution of insulating cooling liquid, isolating magnetic fields of magnetic-fear components, and protecting a motor, a coil and a medium box module and personnel safety of operators;

The excitation system comprises a magnetic yoke (1), a coil (2) and a heat exchange device (3); the magnetic yoke (1) comprises an upper magnetic pole left (110), an upper magnetic pole right (120), a magnetic conduction plate left (130), a magnetic conduction plate right (140) and a lower magnetic pole (150), wherein the upper magnetic pole left (110) and the upper magnetic pole right (120) are formed by welding or fastening and connecting an upper magnetic pole yoke plate (111) and an upper magnetic pole iron core module (112), and the lower magnetic pole (150) is formed by welding or fastening and connecting two symmetrical lower magnetic pole yoke plates (151), a lower magnetic pole iron core module (152) and water baffles (153) positioned on two sides of the lower magnetic pole yoke plate and the lower magnetic pole iron core module; the heat exchange device (3) consists of a pipeline (310), a pump (320) and a heat exchanger (330); wherein the inlet of the pump (320) is connected with the cooling liquid outlet (216) of the coil through a pipeline (310), the outlet of the pump (320) is connected with the heat exchanger (330), and the other end of the heat exchanger (330) is connected with the cooling liquid inlet (215) of the coil;

the medium box module consists of two or more non-magnetic conductive frame plates and high magnetic conductive medium positioned between the non-magnetic conductive frame plates;

the coil (2) is composed of a coil shell (210), a coil winding (220) and insulating cooling liquid (230) which is filled in the coil shell (210) and submerges the coil winding (220), wherein the coil shell (210) is composed of an inner coaming (211), an upper magnetic conduction plate (212), a lower magnetic conduction plate (213) and an outer coaming (214); the inner coaming (211) of the coil shell (210) is made of non-magnetic steel plates, and the upper magnetic plate (212), the lower magnetic plate (213) and the outer coaming (214) are made of high magnetic steel plates; temperature measuring probes (17) are arranged on a coil cooling liquid inlet pipeline (310) and near a cooling liquid outlet (216) and at the top layer of insulating cooling liquid (230), the temperature and the temperature difference of the insulating cooling liquid at the inlet and outlet of the coil are monitored in real time, and fault alarms are sent out when the temperature is too high or the temperature difference is too large; a flow switch (18) for monitoring the flowing state of the insulating cooling liquid (230) is arranged on the coil cooling liquid pipeline (310), and a fault alarm is sent out when the flow rate does not reach the set requirement;

The front ends of the swivel driving motor (550) and the pulsation motor (1230) are respectively provided with a motor protector (16), and the motor protector can timely protect and give an alarm when detecting overcurrent or open phase;

the coil part of the wet high-gradient strong magnetic separator adopts a forced insulation cooling liquid circulation cooling mode; the coil winding is arranged in the shell, and gaps for the circulation of insulating cooling liquid are formed between the inside of the coil winding and the space between the winding and the shell by adopting insulating strips; the inner coaming of the coil shell is made of non-magnetic stainless steel, and the upper magnetic plate, the lower magnetic plate and the outer coaming are made of high magnetic steel plates;

the sorting system consists of a swivel, a swivel driving part, an ore feeding hopper, a water flushing hopper, an ore discharging water tank, a magnetic material collecting hopper, a non-magnetic material collecting hopper, a middle ore hopper, a pulsation mechanism and a liquid level observing hopper; the rotary ring is internally provided with a plurality of medium boxes made of high-permeability soft magnetic materials, and the medium boxes are continuously fed into and taken out of the annular structure of the sorting area;

the wet high-gradient strong magnetic separator is provided with a slag separation box of the ore discharge water in front of an ore discharge water inlet, and a manual or automatic slag discharge valve for timely discharging the separated impurities is arranged at the bottom of the slag separation box;

according to different corrosion protection requirements, an upper magnetic pole core module (112) and a lower magnetic pole core module (152) of the wet high-gradient high-intensity magnetic separator are classified into three grades: the first grade is not specially treated; the second grade is that a water-resistant and wear-resistant antirust coating is sprayed on the surface of the magnetic pole iron core, which is contacted with the ore pulp; the third level is to add a replaceable sacrificial anode on the basis of the second level.

2. Wet high gradient high intensity magnetic separator according to claim 1, characterized in that the wet high gradient high intensity magnetic separator is provided with different upper pole core modules (112) and lower pole core modules (152) according to different working conditions.

3. Wet high gradient strong magnetic separator according to claim 1 or 2, characterized in that for use sites with high content of strong magnetic minerals in the separated pulp, the upper pole core module is arranged with acute angle rounding or/and non-magnetic conductive stainless steel magnetism isolating treatment at the periphery of the flowing ore gap (113), while the lower pole core module is arranged without acute angle rounding or non-magnetic conductive stainless steel magnetism isolating treatment at the periphery of the flowing ore flowing water gap (154).

4. The wet high-gradient strong magnetic separator according to claim 1, wherein the coil winding (220) is placed in the coil housing (210), and the coil winding (220) is insulated from the coil housing (210) by an insulating strip (240) at intervals, so that complete insulation between the coil winding (220) and the coil housing (210) is ensured, and a flowing channel of insulating cooling liquid is preset; when the coil winding (220) is wound, insulating strips (240) are used for insulating and cooling liquid flowing channels are formed in the winding in a spacing mode.

5. The wet high-gradient strong magnetic separator according to claim 1, wherein a cooling liquid inlet (215) is arranged at the lower part of the coil housing (210), and a cooling liquid outlet (216) is arranged at the upper part of the coil housing (210) away from the cooling liquid inlet (215); the insulating coolant (230) flows into the coil housing (210) through the coolant inlet (215), flows into the coil winding (220) and through an insulating coolant channel preset between the coil winding (220) and the coil housing (210), and flows out through the coolant outlet (216).

6. Wet high gradient strong magnetic separator according to claim 5, characterized in that a shunt chamber (217) is arranged between the cooling liquid inlet (215) and the coil winding (220), and a confluence chamber (218) is arranged between the cooling liquid outlet (216) and the coil winding (220).

7. The wet high-gradient strong magnetic separator according to claim 6, wherein a drain valve (340) is arranged between the pump (320) and the cooling liquid outlet (216) of the coil and at the lowest position of the insulating cooling liquid (230), and the drain valve (340) is used for draining the insulating cooling liquid (230) in the coil (2) and the heat exchange device (3) or injecting the insulating cooling liquid (230) into the coil (2) and the heat exchange device (3) in cooperation with the pump (320).