AU2017279840A1

AU2017279840A1 - Vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled

Info

Publication number: AU2017279840A1
Application number: AU2017279840A
Authority: AU
Inventors: Zhichao BAI; Xuejiao DENG; Ji Feng; Bin Li; Zhenkai Liu; Yue Ma; Qi Tang; Qiong Wu; Chengwei Yang; Jiao YANG; Chengchen ZHANG
Original assignee: Longi Magnet Co Ltd
Current assignee: Longi Magnet Co Ltd
Priority date: 2017-02-24
Filing date: 2017-03-13
Publication date: 2018-09-13
Also published as: CN106622646A; CN108262159A; AU2018217255B2; CA3015206A1; WO2018152878A1; CA3015206C; CN108262160A; CN108262160B; CN108262161A; AU2018217255A1; WO2018153175A1; CN108262159B; CN108262161B; CN207722951U

Abstract

Abstract The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) is disclosed by the invention and mainly includes magnetic excitation system, separation system, pulsation system, collection system, support system, 5 driving system and protection system. The magnetic excitation system provides magnetic field; the separation system realizes the continuous separation effect of fine tailings; the pulsation system provides pulsation effect to realize the dispersion of minerals in pulp; the collection system is used for feeding, flushing, collecting fine tailings and observing and adjusting the liquid level; the support system is used to 10 support The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) and fixed connection with field Foundation; the driving system is used to provide power for WHIMS; the protection system is used for protection of personal safety and equipment. The organic combination of various parts of the invention can achieve good indexes in the separation of the iron ore, the 15 non-ferrous purification, the separation of the non-ferrous ore, the separation of the rare-earth ore, etc.

Description

invention and mainly includes magnetic excitation system, separation system, pulsation system, collection system, support system, driving system and protection system. The magnetic excitation system provides magnetic field; the separation system realizes the continuous separation effect of fine tailings; the pulsation system provides pulsation effect to realize the dispersion of minerals in pulp; the collection system is used for feeding, flushing, collecting fine tailings and observing and adjusting the liquid level; the support system is used to to support The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) and fixed connection with field Foundation; the driving system is used to provide power for WHIMS; the protection system is used for protection of personal safety and equipment. The organic combination of various parts of the invention can achieve good indexes in the separation of the iron ore, the non-ferrous purification, the separation of the non-ferrous ore, the separation of the rare-earth ore, etc.

Description

Vertical Ring Wet High Intensity Magnetic Separator With Pulsation and Forced Oil Cooled

Technical Field

The invention belongs to the technical field of magnetic separation and specifically relates to a vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled, which is suitable for mining magnetic places.

Background Technology

As an environmentally friendly and economical method, a magnetic separation has been widely used in iron mine, non-metal mine and rare metal mine. The traditional magnetic separation equipment mainly uses a drum magnetic separator, the drum magnetic separator has the characteristics of stable operation, low power consumption and large processing capacity, but its magnetic field adsorption capacity is not enough to absorb weak magnetic minerals. In the weak magnetic mineral separation places, a flat ring strong magnetic separator is developed for weak magnetic minerals abroad, but it can’t form a stable level in a separation area because of its structure, and the adhesion phenomenon is often happened in refractory material, because the direction of feeding and discharging is the same, so that the separation effect is not the ideal, and the matrix box is easy to block.

After many researchers around the world many years research, the vertical ring magnetic separator is developed which overcomes the shortcomings of the original flat ring strong magnetic separator with pulsation and has been widely used. Especially, WHIMS is invented by the applicant can be used for purified separation of weak magnetic minerals and non-magnetic impurities in magnetic minerals because of its reasonable structure, convenient operation, and in which the vertical ring is designed and the design of the vertical ring in them, and a magnetic yoke mounting yoke is installed close to the lower of the ring round on the basis of ring shape of the vertical ring, and the strong excitation coil winds the yoke to produce a strong adsorption when the ring round through the bottom, which makes the weak magnetic mineral separation and impurity removal, which is impossible in the original magnetic separator. WHIMS has low operation cost, small environmental pollution, compared with the original method, floating method and chemical method of gravity separation method, not only for wet separation of weak magnetic minerals, but also purification of non-magnetic minerals to remove iron impurities.

With the development of production practice and field application, the following problems are found in the existing vertical ring magnetic separator: easy materiel stacking in the upper pole, and difficult installation because of using long bolts through connection of the magnetic yoke, and shielding part of the magnetic field in the separation space because the water retaining plate is magnetic material, and uneven heat dissipation because a water-cooling interlayer is adopted for cooling in a coil, and a short life of concentrate tank which is easy to wear, and the liquid level can’t be adjusted in the overflow hopper when the overflow liquid level is observed at the same time because of a tailings hopper valve adjust at the bottom of the device.

Content of the Invention

In order to solve the above problems, after the present inventors design and research, the WHIMS is proposed not only to solve the problems of high temperature rising and cooling uneven in coil, easy stacker in the upper pole, easy worn of the concentrate tank, and the liquid level inconveniently be adjusted in the existing equipment, and also has a higher separation background field strength, a high recovery rate and a large capacity etc.

According to the technical scheme of the invention, the vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) is disclosed by the invention and mainly includes magnetic excitation system, separation system, pulsation system, collection system, support system, driving system and protection system. The magnetic excitation system provides magnetic field; the separation system realizes the continuous separation effect of fine tailings; the pulsation system provides pulsation effect to realize the dispersion of minerals in pulp; the collection system is used for feeding, flushing, collecting fine tailings and observing and adjusting the liquid level; the support system is used to support the vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) and fixed connection with field Foundation; the driving system is used to provide power for WHIMS; the protection system is used for protection of personal safety and equipment.

In WHIMS, the feeding is supplied from interior of the ring to pass down through the ring from the upper magnetic pole of the magnetic excitation system, and the magnetic material in the feeding is adsorbed to the ring and brought to leave the magnetic field above the ring with the ring rotation; the flushing water from the top of the ring is used for lateral flushing the ring, and the magnetic material is collected into the magnetic hopper; a non-magnetic material is discharged from the non-magnetic hopper under the equipment; the reciprocating piston motion of a pulsation mechanism makes the material into a loose state in the separation area.

in that the center of magnetic yoke of the magnetic excitation system is provided with an passage for feeding discharging along the direction of magnetic field, the passage distributed along the magnetic field and a magnetic circuit without excess air gap which improve the strength of the separation area; the yoke is composed with a plurality of soft magnetic materials spliced, and each splicing part is connected with an outer lug and without the traditional long bolt structure through the hole drilled in the soft magnetic materials, and the connection is provided with an positioning structure to reduce the difficulty for assembling the magnetic yoke.

the lower magnetic pole of the yoke is assembled with the water retaining plate whose material in working air gap is non-magnetic material, and the water retaining plate cooperating with the lower magnetic pole improves the surface height of the pulp to make the lower part of the ring immersed under liquid level of the pulp. Preferably, the excitation system is assembled with the magnetic yoke and the coil assembly which is composed of a coil and a cooling system, and the upper part of the coil surrounding the lower magnetic pole 101 is arranged into the yoke.

Preferably, the cooling system is communicated with the coil through a pipeline and located under side face of the coil; the transformer oil is circulated between the coil and the cooling system to bring the heat generated by the coil to the outside, so that the coil works under a reasonable temperature, the separation system is composed of the ring and ore discharging device; the main body of the ring is ring shape, and the lower part of the main body of the ring pass through the middle air gap of the yoke and is rotated continuously around the shaft to bring the concentrate outside the magnetic field and make separation of concentrate and tailings.

Further, the pulsation system changes periodically the volume of the tailings hopper (405) to make the pulp within the equipment into a reciprocating motion to disperse the minerals within the pulp; and the pulsation system is composed of a pulsation box (300), a piston (301) and a diaphragm(302); the pulsation box (300) is a box body structure, and an output rod is arranged in the front of end, and an eccentric wheel inside the pulsation box (300), the side of the box with a big belt wheel, a big belt wheel can drive the eccentric wheel mechanism to rotate and output the reciprocating motion in the front end of the output rod; the piston (301) is a circular metal plate, the metal plate center is connected with the pulsation box (300) output rod, and the diaphragm (302) is rubber soft material, a circular diaphragm, and the ring body is U shaped, and both sides of U shaped ring is respectively the outer ring surface and inner ring surface of the ring, and the outer ring surface of the U shaped is fixed with the tailings hopper (405) together, the inner surface of the U shaped is fixed with the piston(301).

Preferably, the collection system is composed of a mine bucket 400, a flushing water bucket 401, a concentrate bucket 402, a concentrate transition bucket 403, a general concentrate tank 404, a tailings hopper 405, an adjusting rod 406 and an overflow bucket 407.

Preferably, the driving system makes an outer electric energy into the kinetic energy of motion; and the driving system is driven by a drive ring (600), a pulsation drive (601) and an electronic components; and the drive ring (600) is composed of a gear reduction motor and a drive gear whose center is sheathed around the output shaft of the gear reduction motor, and the drive gear is engaged with a big gear at the end of the shaft (201) and able to drive a big gear rotation to drive the ring rotation when the gear reduction motor rotation; and the pulsation drive (601) is composed of a a motor and a driving belt wheel whose center is sheathed around the output shaft of the motor, and the driver belt wheel output power to the input large belt wheel of the pulsation box (300) through a transmission belt to drive the big belt wheel rotation.

plurality of small vertical plates is arranged on the inclined portions of the two sides of the bottom surface of the total concentrate tank (404), so that the feeding can form a deposit when the pulp flows in the bottom surface, and to form the natural wear resistant layer, and the service life of the total concentrate tank is increased.

Compared with the existing vertical ring magnetic separator, it is easy to realize the structure of the WHIMS with forced oil cooling of the invention, and has a low manufacturing difficulty, a long service life, a stable index, the use of bad situations for all types of mines, and which solves the problem of high temperature rising and cooling uneven in coil, easy stacker in the upper pole, easy worn of the concentrate tank, and the liquid level inconveniently be adjusted in the existing equipment, and also has a higher separation background field strength, a high recovery rate and a large capacity etc..

Brief Description of the Drawings

Figure 1 is a schematic diagram of the principle of the present invention.

Figure 2 is an isometric view of the present invention.

Figure 3 is a sectional view of the isometric view of the present invention.

Figure 4 is the isometric section view of the yoke in figure 2.

Figure 5 is a sectional view of the coil assembly in figure 2.

Figure 6 is the isometric view of the winding in figure 5

Figure 7 is the isometric view of the swivels in figure 2.

Figure 8 is an isometric view of the ring body frame in figure 7.

Figure 9 is the isometric view of the concentrate bucket and the concentrate transition bucket in Fig. 2

Figure 10 is the isometric section view of the concentrate tank;

Figure 11 is schematic diagram of the electronic control system.

The sign of accompanying drawings in Figure 1 to figure 10 are as follows.

Upper pole 100, Lower pole 101, magnetic conductive plate 102, water retaining plate 103, connecting lug 104, winding 105, shell body 106, insulating rod 107, horse stool 108, expansion box 109, oil pump 110, heat exchanger 111, ring body frame 200, shaft 201, magnetic matrix 202, supporting web 203, slag separating box 204, flushing water tank 205, pulsation bucket 300, piston 301, diaphgram 302, feeding bucket 400, flushing water bucket 401, concentrate bucket 402, concentrate transition bucket 403, general concentrate tank 404, tailings hopper 405, adjusting rod 406, overflow bucket 407, frame 500, ring drive 600, pulsation drive 601, ring cover 700, ring cover 701, belt wheel cover 702.

Specific Embodiments

The technical solution in embodiments of the present invention is clearly and completely described below with reference to drawings in the embodiments of the present invention. Obviously, the described embodiments are only a portion of embodiments in the present invention but not all the embodiments of the present invention. Based on the embodiments in the present invention, an ordinary person skilled in the art can obtain all other embodiments without involving any inventive effort, which all shall fall within the protective scope of the present invention. Besides, the protective scope of the present invention should not be regarded as limit in the following specific structures or specific parameters.

Based on the practice and research of many years of mineral processing, a new type of pulsation strong magnetic separator is provided, which is a method for concentrating the magnetic minerals in the wet process and for the electromagnetic separation of the non-magnetic minerals. The invention relates to WHIMS with forced oil cooled vertical ring, which includes a magnetic excitation system, a separation system, a pulsation system, a collection system, a support system, a driving system and a protection system. The magnetic excitation system provides a magnetic field; the separation system realizes the separation effect of fine tailings continuously; the pulsation system provides pulsation effect for feeding to realize the dispersion of minerals in pulp; the collection system is used for feeding, flushing, collecting fine tailings and observing and adjusting the liquid level; the support system is used to support WHIMS with forced oil cooled vertical ring and fixed connection with field foundation; the driving system is used to provide power for the ring of WHIMS with pulsation and forced oil cooled; the protection system is used for protection of personal safety and equipment.

After dressing practice and continuous improvement for many years, the pulsation strong magnetic separator solves the problem of high temperature rising and cooling uneven in coil, easy stacker in the upper pole, easy worn of the concentrate tank, and the liquid level inconveniently be adjusted in the existing equipment, and also has a higher separation background field strength, a high recovery rate and a large capacity etc.

In the pulsation strong magnetic separator provided by the invention, the material is supplied from interior of the ring to pass down through the ring from the upper pole of the magnetic excitation system, and the magnetic material in the material is adsorbed to the ring and brought to leave the field above the ring with the ring rotation; the unloading water from outside the swivel is used for lateral flushing the ring, and the magnetic material is collected into the hopper; the nonmagnetic material is discharged from the non-magnetic hopper under the equipment; the reciprocating piston motion of pulsation mechanism makes the material into a loose state in the separation area. The center of magnetic yoke of the magnetic excitation system is provided with an passage for material discharging along the direction of magnetic field, the passage distributed along the magnetic field and magnetic circuit without excess air gap to improve the strength of the separation area; the yoke is composed of a plurality of soft magnetic materials spliced, and each splicing part is connected with outer lug and without the traditional long bolt structure through the hole drilled in the soft magnetic materials, and the connection is provided with an positioning structure to reduce the difficulty for assembling the magnetic yoke; the lower magnetic pole of the yoke is assembled with the water retaining plate whose material in working air gap part is non-magnetic material, and the water retaining plate cooperating with the lower magnetic pole improves the surface height of the pulp to make the lower part of the ring immersed under liquid level of the pulp.

The excitation system of WHIMS with pulsation and forced oil cooled is assembled with the magnetic yoke and the coil assembly which is composed of a coil and a cooling system, and the upper part of the coil surrounding the lower magnetic pole 101 is arranged into the yoke. The magnet yoke is buckling -closing formed with two mountain words shaped yoke of which both sides contact, and there is the air gap between the yoke, and the shape of the air gap is circular arc, and the magnetic yoke gather the magnetic field produced by the coil at the middle gap to form a background magnetic field. The magnetic yoke is mainly composed of an upper magnetic pole 100, a lower magnetic pole 101, a magnetic conductive plate 102, a water blocking plate 103 and a connecting lug 104. As shown in Figure 4, the upper pole 100 and the lower pole 101 are fixed together by the magnetic guide plate 102, and the water retaining plate 103 is fixed on the lower magnetic pole 101, and the magnetic circuit is shown by the arrow in the figure. The upper magnetic pole 100 and the lower magnetic pole 101 is provided with a feeding hole which is arranged along the magnetic lines direction ,there are no excess air gap on the magnetic circuit; and the upper magnetic pole 100 is composed of two left-right symmetry parts, the middle gap is the active channel of a supports web 203, and the charge hole of the upper magnetic pole 100 near the supporting web 203 is an open structure to effectively prevent material leakage along the supports web 203. The magnetic guide plate 102 is connected with the upper magnetic pole 100 and the lower magnetic pole 101 and used for magnetic conducting function, and is bolting connected by a connecting lug 104, and the connecting lug 104 is provided with a conical positioning column which is convenient for positioning and mounting. The water retaining plate 103 is fixed on the upper magnetic pole 100, which can effectively improve the pulp liquid level when the equipment is working.

The coil is wound by an electromagnetic wire, and the magnetic field is generated by the power supply, and the magnetic field is finally gathered into the air gap of the magnetic yoke under the action of the magnetic yoke. The coil mainly comprises a winding 105, a shell body 106, an insulating rod 107, a horse stool 108 and an expansion box 109. As shown in Figure 5, the winding 105 is arranged in the shell body 106, and the horse stool 108 is used for supporting the winding 105 and fixing the insulating rod 107, and the expansion box is arranged above the shell body 1O6.The 105 winding is a multilayer structure, each layer separated by an insulating rod 107; the horse stool 108 is strip shape, hollowed in the middle, surrounded by a mountain shape concave or convex structure, and evenly distributed around the winding 105,and the insulating rod 107 is jammed in the middle of the horse stool 108 and in a convex position of the mountain shaped structure; the shell body 106 is a cavity structure which is filled with transformer oil, and the horse stool 108 is fixed together on the inner side of the shell body 106 to form a structure used for supporting the winding 105; and the expansion box 109 acts an integrated expansion buffer, coil outlet, dryer filter function.

The cooling system is communicated with the coil through a pipeline; and the transformer oil is circulated between the coil and the cooling system to bring the heat generated by the coil to the outside, so that the coil works under a reasonable temperature. The cooling system is located under the side of the coil. The cooling system mainly includes an oil pump 110 and a heat exchanger 111. The oil pump 110 is a disc motor transformer oil pump, the pump and the motor are as a whole, and the stator and the rotor of the motor made up of two disc iron cores and located in the shell body of the pump. The transformer oil is sucked into the pump from the rotor center when the rotor working and rotating, and the transformer oil pumped out along the tangent direction. The heat exchanger 111 is a plate heat exchanger, which is composed of a group of corrugated metal plates, and the plate is provided with two pairs of holes which are respectively transferred two kinds of liquid for heating, and the heat exchange between the two kinds of liquid in the corrugated metal plate is realized. The oil pump 110 and the heat exchanger 111 through pipes connected together and connected with the shell boy 106, and the oil pump 110 draws the hot transformer oil from the upper of the coil and returns the cooled transformer oil from the bottom to the coil after cooling through the heat exchanger 111 to form a forced circulation cooling.

The separation system is composed of the ring and an ore discharging device. The main body of the ring is ring shape, and whose lower part pass through the middle air gap of the yoke and is rotated continuously around the main shaft under force to bring the concentrate outside the magnetic field and make separation of concentrate and tailings. The swivel mainly comprises a ring body frame 200, a shaft 201, a magnetic medium 202 and a supporting web 203. As shown in Figure 7, the ring body frame 200 is a hollow runner structure to form an installation space of the magnetic matrix 202; the supporting web 203 is a metal plate whose the center has a hole, and the supporting web 203 is welded in the middle position of the ring body frame 200; the shaft 201 is fixed by an expansion sleeve through the center hole of the supporting web 203, a bearing seat is arranged on both sides of the shaft 201, and the bearing seat is located in the upper pole 100,and one end of the shaft 201 is provided with a transmission big gear. The magnetic matrix 202 is a box body structure made of high conductivity magnetic material, which is fixed on the ring body frame 200, an unit material of the box body can be rod, rod, thread polygon mesh, etc.

The ore discharging device is arranged above the outer side of the ring main body, and connected with an external water supply pipe, and spray water to the ring main body and collect the concentrate absorbed on the ring main body into the concentrate bucket 402. The ore discharging device mainly comprises a slag separating box 204 and a flushing water tank 205. The slag separating box 204 is a box body structure, and both ends of the box body are connected with flanges, which are respectively connected with the flushing water tank 205 and the external water supply pipe, and the inner part of the slag separating box 204 is provided with an inclined filtering net which is used for filtering the impurities in the water to discharge from the lower part of the box body. The flushing water tank 205 is a case body structure, both ends of the case body are provided with flanges, the case section is a pentagon whose two adjacent angles are right angle, the case body has two faces jointed closely with the ring cover 702 to effectively prevent the slurry or discharge water splashing out of the device, and a water flushing hole is opened in the flushing water tank 205 near the side of the swivel body frame 200.

The pulsation system changes periodically the volume of the tailings hopper 405 to make the pulp within the equipment into a reciprocating motion, and to disperse the minerals within the pulp. The pulsation system is composed of a pulsation box 300, a piston 301 and a tympanic membrane 302. The pulsation box 300 is a box body structure, and a output rod is arranged on the front end, and an eccentric wheel inside the pulsation box, the side of the box with a big belt wheel, the big belt wheel can drive the eccentric wheel mechanism to rotate and output the reciprocating motion in the front end of the output rod. The piston 301 is a circular metal plate, the metal plate center is connected with the output rod of the pulsation box 300. The tympanic membrane 302 is rubber soft material and a circular ring shape, and the ring body is U shaped, and both sides of U shaped ring is respectively the outer ring surface and inner ring surface of the ring, and the outer ring surface of the U shaped is fixed together with the tailings hopper 405, and the inner surface of the U shaped is fixed together with the piston 301.

The collection system is provided for the device to the mine, water supply, collection of fine tailings, liquid level observation and other functions. The collection system is composed of a feeding bucket 400, a flushing water bucket 401, a concentrate bucket 402, a concentrate transition bucket 403, a general concentrate tank 404, a tailings hopper 405, an adjusting rod 406 and an overflow bucket 407. As shown in Figure 2 and Figure 3, the feeding bucket 400 and the flushing water bucket 401 are welded into a box body structure, which is arranged on the upper magnetic pole 100 and is connected with the material passage of the upper magnetic pole 100. The concentrate bucket 402 is tank structure and symmetrically arranged under the inner side of the ring a certain angle is formed between the lower surface of the concentrate bucket 402 and the horizontal plane, and a discharge port is provided on the lower position under the surface.

The concentrate transition bucket 403 is a tank structure, which is installed under the discharge port, and the concentrate is transported into the concentrate tank 404 through the pipeline near the tail of the concentrate transition bucket 403. As shown in Figure 10, the concentrate tank 404 is a tank structure, whose bottom surface is formed with both sides inclined plane and the intermediate discharge port. A plurality of vertical plate is fixed along the inclined plane from top to bottom, and the first vertical plate is higher than the other vertical plate, the structure can make the pulp precipitate formed when flowing in a bottom surface to form the natural wear layer and increase the service life of the concentrate tank. The tailings hopper 405 is arranged under the feeding holes of the lower pole 101, and a closing structure is formed from top to bottom in the hopper body, under the tailings hopper 405 valve is equipped with adjustable valve. The adjusting rod 406 is an adjusting mechanism which is composed of a hand wheel, an extension rod and a flexible shaft, and is arranged on the side of the device. The valve regulating point of the tailings hopper 405 is extended to the upper part of the device. The overflow bucket 407 is box structure and opening above the box body, and the middle of the bottom surface of the box body is provided with a vertical plate in bottom surface of both sides of which there are each outlet, one outlet is connected with the tailings hopper 405, and the whole box body is located in the side of the device, and adjacent the adjusting hand wheel of the adjusting rod 406.

The support system is used for supporting the equipment and fixing the equipment on the ground. The support system mainly includes the bracket 500, and the support system is welded by a section steel after the optimization design. The bottom of the bracket 500 is square frame shape for the installation of pulsating bucket 300, and one side of the square frame projecting a trapezoidal support. On the bottom square frame of the bracket 500, four upright columns is set and both sides of each upright column are configured with a reinforced section steel to increase the intensity of support, the upper faces of four upright columns are in the same plane, the lower pole 101 on the four upright columns.

The driving system makes an outer electric energy into the kinetic energy of motion and a power source for rotating parts of the invention, and the driving system is mainly composed a drive ring 600, a pulsation drive 601 and an electronic component. The drive ring 600 is composed of a gear reduction motor and a drive gear whose center is sheathed around the output shaft of the gear reduction motor, and the drive gear is engaged with a big gear at the end of the shaft 201 and able to drive big gear rotation to drive the swivel rotation when the gear reduction motor rotation. The pulsation drive 601 is composed of a motor and a driving belt wheel whose center is sheathed around the output shaft of the motor, and the driver belt wheel output power to the input large belt wheel of the pulsation box 300 through a transmission belt to drive the big belt wheel rotation.

The principle diagram of the electronic control system of the invention is shown in Figure 11, the main circuit power and the current regulator PCB power when the breaker QF1 is closed, the frequency converter BP1 power when the breaker QF2 is closed, and the swivel motor M1 is energized operation when the intermediate relay KA1 is closed, and the output speed of the swivel motor M1 is adjusted by adjusting the frequency converter BP1. The frequency converter BP2 power when the breaker QF3 is closed, and the pulsation motor M2 is energized operation when the intermediate relay KA2 is closed, and the output speed of the swivel motor M2 is adjusted by adjusting the frequency converter BP2.The oil pump motor M3 is energized operation when the breaker QF4 is closed and AC contactor KM2 is closed, thermal overload relay FR1 is cut off when the oil pump motor M3 overload overcurrent, and the power supply of the oil pump motor M3 is cut off to play a protective role. A silicon controlled rectifier module VC1 converts three-phase AC into DC current to flow through an excitation coil YA when the breaker QF5 is closed and AC contactor KM1 is closed, and the conduction state of the silicon controlled rectifier module VC1 can be adjusted by a current regulator PCB so as to adjust the size of current flow through the excitation coil YA.

The protective system is made of thin steel plate through welding and bending, which can separate the equipment from the outside to protect the equipment and safety. The protection system is composed of a swivel cover 700, a gear cover 701 and a belt wheel cover 702. The swivel cover 700 is divided into two parts, each part is composed of a cambered plate and two fan-shaped plate welded to form a structure of arc groove, and the two part lie both sides of the water bucket 401 and upside down on the swivel body; the gear cover 701 is an unequal notch structure, and a hole is arranged at two centers of the notch and the two holes are not in the same plane used for the motor shaft and gear shaft passing through, and the gear cover 701 cover completely the gear inside. The belt wheel cover 702 is not equal slot structure, a hole is arranged at two centers of the notch and the two holes are not in the same plane used for the motor shaft and gear shaft passing through, and the belt wheel cover 702 cover completely the belt wheel inside. The working principle of Said induction type wet pulsation strong magnetic separator with forced oil cooled vertical swivel of the invention is shown in Figure 1, the pulp is supplied from the feed bucket 400 above the upper magnetic pole 100, and the washing water is supplied from the water bucket 401, and the pulp in the equipment can be moved up and down after the running of the pulsation box. The valve opening of the tailings hopper 405 is adjusted to keep the liquid level of the pulp maintenance near top edge of lower magnetic pole 101, and a high field strength background magnetic field is generated at the air gap between the upper magnetic pole 100 and the lower magnetic pole 101 when the winding 105 is powered. The lower part of the swivel frame 200 passes through the air gap, and drives the magnetic media 202 rotate together when rotating, and the magnetic medium 202 induces a high gradient magnetic field in the background magnetic field to adsorb magnetic mineral in a slurry, and magnetic minerals with rotation of the swivel body frame 200 was brought to the top, after the magnetic field is removed, the magnetic minerals are collected into the concentrate bucket 402 under the action of the washing water; nonmagnetic ore is outflowed directly from the tailings hopper 405 under the device by gravity, and a sorting process is completed.

The traditional strong magnetic separator has the following problems: when the equipment works, a closed structure on the side of the upper pole near the swivel causes a leakage material accumulated above the upper pole from the top; when a yoke is installed with the long bolt through the yoke, positioning and installation is inconvenient; the magnetic material is adopted in a water retaining plate, which causes the partial magnetic flux shielding; the coil is cooled by a coolant liquid horizontal flow, which causes uneven heat dissipation and a short service life of the cooling coil; the bottom of the concentrate tank is a plane, which causes the bottom of the concentrate tank easy wear and leakage when a pulp rapid impacting and flowing; the valve regulation point of the tailings hopper is below the equipment, which causes that the valve of the tailings hopper can’t adjusted while observing the liquid level of the overflow bucket and extremely inconvenient adjustment.

In view of the above problems, the pulsation strong magnetic separator made the following improvements: the side of the upper pole 100 near the swivel open, and the leakage material above flows directly from the open position to the equipment to effectively prevent the material accumulated above the upper pole 100; the upper pole 100, the lower pole 101 is connected with the magnetic guide plate 102 through a connecting lug 104 which is connected by a bolt and use the tapered positioning structure, and which greatly facilitate the yoke mounting. The water retaining plate 103 is made of stainless steel, making effective use of maximum flux. Using the method of coil forced heat exchange and cooling, the winding 105 is a multilayer structure, which is immersed in the transformer oil and placed in the horse stool 108, the transformer oil flows from bottom to top in the coil, and the hot oil is outflowed from the top of coil and flows into the heat exchanger cooling, and cooled cold oil flows then into the coil from below. The flow pattern is consistent with the physical characteristics of the self-convection of hot liquid upward cooling down within liquid and greatly improves the uniformity of heat dissipation, and improve the service life of the coil; a plurality of small vertical plates are arranged on the inclined portions of the two sides of the bottom surface of the concentrate tank 404 , so that the pulp can form a deposit when the pulp flows in the bottom surface, and to form the natural wear resistant layer, and the service life of the concentrate collecting groove is increased; the regulating handwheel of the adjusting rod 406 located near the overflow bucket 407, which can observe the pulp level in the overflow bucket 407 to regulate valve opening of the tailings hopper 405, and cause convenient adjustment of a device.

Further, a skeleton structure is preferably used in the swivel of the induction type wet pulsation strong magnetic separator with forced oil cooled vertical swivel of the invention, a magnetic medium is fixed on the swivel frame through bolts, the swivel frames are made of stainless steel material; and the magnetic medium is high permeability soft magnetic materials, the maximum phase permeability 8000, the coercivity HC0IOOA/m, the shape can be rods, polygon, mesh, dentate, thread, steel wool and other structures; and an expansion sleeve connection structure is used to connect the central axis of the swivel with the swivel; the feeding bucket is symmetrically arranged on both sides of the swivel, and the feed bucket is installed on the feeding channel in the yoke. The magnetic hopper are symmetrically arranged at inner both sides of the swivels, the magnetic hopper on one side of the swivel can be one hopper body or also be multiple hopper bodies; the bottom surface of the magnetic hopper has a certain angle with the horizontal surface , so as to realize the pulp self-flowing in the magnetic hopper; the traditional way of pipeline was abandoned in the magnetic hopper and going mine in tank is adopted to reduce the blockage of magnetic hoppers and easy to clean. An unloading ore point is located above the magnetic hopper, and the means of fluid washing a magnetic medium on the swivel is used to unload ore, in which fluid can be air, water or a mixture of water and air.

Further, the front end of the ore unloading device in the swivel of the induction type wet pulsation strong magnetic separator with forced oil cooled vertical swivel of the invention is provided preferably with a slag filtering device to filter large particle impurities in an unloading water, and the forced heat exchange is used to cooling the coil whose winding is multilayer structure to increase the contact area between the winding and the heat exchange medium and improve the efficiency of heat transfer. The heat exchange medium flows from one side of the coil to the other symmetrical side of the coil, and the heat exchange medium can be insulated cooling liquid, air or water. As using an insulating coolant cooling the coil, the winding of the coil is directly immersed in an insulating coolant, the coil is provided with an insulating coolant expansion box, and the number of the expansion box can be one or more, the expansion box is provided preferably with a Structure of a respirator, a junction hopper, a liquid level observation etc. A pulsation bucket pushes the piston plate to do reciprocating motion, and the piston plate is connected softly with the non-magnetic hopper through rubber or other soft waterproof material to seal pulp in the non-magnetic hopper.

Further, in the induction type wet pulsation strong magnetic separator with forced oil cooled vertical swivel of the invention, a pulsation stroke and pulsation frequency of the pulsation bucket is preferably adjustable to adapt to different ore properties, and the pulsation stroke refers to the amplitude of reciprocating motion, the pulsation frequency refers to the speed of reciprocating motion. The non-magnetic hopper is positioned below the magnetic yoke, the valve is provided under the hopper body to adjust the height of liquid level by adjusting the valve opening and feeding quantity. A liquid level observation bucket is provided on the side of the equipment, and the liquid level observation bucket is connected with the non-magnetic hopper to control the pulp surface height in the liquid level observation hopper by manual or automatic adjustment of the valve opening of the valve below the nonmagnetic material hopper. The valve of the nonmagnetic material hopper is provided with an extension rod, and the valve opening can be adjusted outside equipment; the regulating point can also be transferred to the top of the equipment through the flexible shaft or other steering device to observe the height of the liquid level while adjusting the valve. The swivel cover can cover all swivels to protect the personal safety, and each part of the cover body is connected with an inserting type to prevent slurry spill. The cover body is provided with an observation window. The bracket is made of section steel welded together, and the bracket is composed of two parts of a magnetic yoke bracket and a pulsation hopper bracket, wherein the magnetic yoke bracket and the pulsation hopper bracket are connected by welding or bolt fastening mode, and a positioning structure on the bracket.

The invention has the advantages of reasonable and novel structure, high safety, energy saving and beautiful appearance, while ensuring the good separation index. The above is only preferred specific embodiments of the invention; however, the scope of protection of the invention is not limited to this. Any modification or substitution that is easy to conceive by a person skilled in the art within the technical scope disclosed in the invention should be included in the scope of protection of the invention. It should be understood by an ordinary person in the art that any variety of modification could be made in format and detail without departing from the spirit and scope of the invention defined by the appended claims.

Claims

Claims

1. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) is disclosed by the invention and mainly includes magnetic excitation system, separation system, pulsation system, collection system, support system, driving system and protection system_; the magnetic excitation system provides magnetic field; the separation system realizes the continuous separation effect of fine tailings; the pulsation system provides pulsation effect to realize the dispersion of minerals in pulp; the collection system is used for feeding, flushing, collecting fine tailings and observing and adjusting the liquid level; the support system is used to support the vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled (WHIMS) and fixed connection with field foundation; the driving system is used to provide power for WHIMS; the protection system is used for protection of personal safety and equipment;

The center of magnetic yoke of the magnetic excitation system is provided with an passage for feeding discharging along the direction of magnetic field, the passage distributed along the magnetic field and a magnetic circuit without excess air gap which improve the strength of the separation area; the yoke is composed with a plurality of soft magnetic materials spliced, and each splicing part is connected with an outer lug and without the traditional long bolt structure through the hole drilled in the soft magnetic materials, and the connection is provided with an positioning structure to reduce the difficulty for assembling the magnetic yoke;

The lower magnetic pole of the yoke is assembled with the water retaining plate whose material in working air gap is non-magnetic material, and the water retaining plate cooperating with the lower magnetic pole improves the surface height of the pulp to make the lower part of the ring immersed under liquid level of the pulp.
2. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1, characterized is that the feeding is supplied from interior of the ring to pass down through the ring from the upper magnetic pole of the magnetic excitation system, and the magnetic material in the feeding is adsorbed to the ring and brought to leave the magnetic field above the ring with the ring rotation; the flushing water from the top of the ring is used for lateral flushing the ring, and the magnetic material is collected into the magnetic hopper; a non magnetic material is discharged from the non-magnetic hopper under the equipment; the reciprocating piston motion of a pulsation mechanism makes the material into a loose state in the separation area.
3. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1 or 2, characterized in that the excitation system is assembled with the magnetic yoke and the coil assembly which is composed of a coil and a cooling system, and the upper part of the coil surrounding the lower magnetic pole (101) is arranged in the yoke.
4. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1 or 2, characterized in that the cooling system is communicated with the coil through a pipeline and located under side face of the coil; the transformer oil is circulated between the coil and the cooling system to bring the heat generated by the coil to the outside, so that the coil works under a reasonable temperature.
5. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1 or 2, characterized in that the separation system is composed of the ring and an ore discharging device; the main body of the ring is ring shape, and the lower part of the main body of the ring pass through the middle air gap of the yoke and is rotated continuously around the shaft to bring the concentrate outside the magnetic field and make separation of concentrate and tailings.
6. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1 or 2, characterized in that the pulsation system changes periodically the volume of the tailings hopper (405) to make the pulp within the equipment into a reciprocating motion to disperse the minerals within the pulp; and the pulsation system is composed of a pulsation box (300), a piston (301) and a diaphragm(302); the pulsation box (300) is a box body structure, and an output rod is arranged in the front of end, and an eccentric wheel inside the pulsation box (300), the side of the box with a big belt wheel, a big belt wheel can drive the eccentric wheel mechanism to rotate and output the reciprocating motion in the front end of the output rod; the piston (301) is a circular metal plate, the metal plate center is connected with the pulsation box (300) output rod, and the diaphragm (302) is rubber soft material, a circular diaphragm and the ring body is U shaped, and both sides of U shaped ring is respectively the outer ring surface and inner ring surface of the ring, and the outer ring surface of the U shaped is fixed with the tailings hopper (405) together, the inner surface of the U shaped is fixed with the piston(301).
7. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1 or 2, characterized in that the collection system is composed of a feeding bucket (400), a flushing water bucket (401), a concentrate bucket (402), a concentrate transition bucket (403), a general concentrate tank (404), a tailings hopper (405), an adjusting rod (406) and an overflow bucket (407).
8. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of claim 1 or 2, characterized in that the driving system makes an outer electric energy into the kinetic energy of motion; and the driving system is driven by a drive ring (600), a pulsation drive (601) and an electronic components; and the drive ring (600) is composed of a gear reduction motor and a drive gear whose center is sheathed around the output shaft of the gear reduction motor, and the drive gear is engaged with a big gear at the end of the shaft (201) and able to drive a big gear rotation to drive the ring rotation when the gear reduction motor rotation; and the pulsation drive (601) is composed of a a motor and a driving belt wheel whose center is sheathed around the output shaft of the motor, and the driver belt wheel output power to the input large belt wheel of the pulsation box (300) through a transmission belt to drive the big belt wheel rotation.
9. The vertical ring wet high intensity magnetic separator with pulsation and forced oil cooled of any of claims 1- 8 , characterized in that a plurality of small vertical plates are arranged on the inclined portions of the two sides of the bottom surface of the total concentrate tank (404), so that the feeding can form a deposit when the pulp flows in the bottom surface, and to form the natural wear resistant layer, and the service life of the total concentrate tank is increased.

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Drawings of the Description

Draw 1

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Draw 2

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702

Draw 3

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100

Draw 4

109

Draw 5

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203

Draw 7

200

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Draw 11