CN109746117A - Low-frequency ac electromagnetism wash mill - Google Patents
Low-frequency ac electromagnetism wash mill Download PDFInfo
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- CN109746117A CN109746117A CN201910198699.XA CN201910198699A CN109746117A CN 109746117 A CN109746117 A CN 109746117A CN 201910198699 A CN201910198699 A CN 201910198699A CN 109746117 A CN109746117 A CN 109746117A
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Abstract
The invention discloses a kind of low-frequency ac electromagnetism wash mills, it include: washing cylinder, concentrate cone cylinder, overflow mechanism, mine-feeding equipment, water supply device, concentration equipment, concentration equipment includes being sheathed on holding together mine field coil and be located to hold together several travelling-magnetic-field coils below mine field coil at the top of washing cylinder periphery, hold together mine field coil and is passed through single-phase low-frequency ac, travelling-magnetic-field coil is passed through three-phase low-frequency ac, the mode of connection of travelling-magnetic-field coil is Y-shaped or " △ " shape connection, and the frequency of low frequency ac is lower than 50Hz；Position corresponding with mine field coil is held together is provided with reaction magnetic ring inside washing cylinder；Overflow inner cylinder and washing cylinder are isometrical；The center for going out medium position of the mine mouth between the first, second travelling-magnetic-field coil and washing cylinder inner wall to distance between mineral-feeding pipe outer wall of mine-feeding equipment；Water supply device is set to the concentrate cone cylinder below washing cylinder.Low-frequency ac electromagnetism wash mill concentrate grade of the invention is high, good separation effect, has a wide range of application.
Description
Technical field
The present invention relates to technical field of magnetic separation equipment, specifically, being related to a kind of upgrading synergy, energy-saving and environment-friendly low frequency is handed over
Galvanic electricity magnetic wash mill.
Background technique
Currently, domestic magnetic concentration factory generallys use the magnetic plants such as drum magnetic separator, magnetic force sloughing-off tank.This kind of equipment
Magnetic field strength is higher, and magnetic field force is larger, acts on the powerful magnetic coagulation that sorts of magnetic iron ore.Therefore exist " magnetism is mingled with " and
The congenital disadvantage such as " non magnetic to be mingled with " seriously affects concentrate grade so that containing more gangue in concentrate.In addition, such magnetic
Optional equipment process flow is long and complicated, and middling cycle amount is excessive, and water resources consumption is high, and beneficiation cost is high.With instantly
Upgrading synergy, energy-saving Green Mine theory are runed counter to.It is mingled with to solve the magnetism of conventional magnetic plant with non magnetic, adopts
High-grade magnetite concentrate or ultrapure magnetite concentrate are obtained with cost-effective ore dressing means, for this purpose, each research institute does
A large amount of work, such as increases the number of poles of drum magnetic separator, improves the rolling number of concentrate powder, and the appropriate magnetic field for reducing concentrate end is strong
Degree adds flushing water, installation shaking device, pulsating field and Rotating field magnetic separator etc. unloading mine end weak magnetic area, but above-mentioned various
Method produces little effect to raising concentrate grade, therefore, develops a kind of upgrading synergy, energy-saving and environment-friendly magnetic plant, which becomes, works as
Preceding top priority.
Currently, traditional electromagnetism wash mill generallys use the overflow weir greater than washing cylinder diameter, and the overflow weir for increasing diameter exists
While reducing concentrate amount in tailing, since bore becomes larger, flow velocity decline easily causes non magnetic ore to hover or sink, makes
Nonmagnetic tailings discharge is unsmooth, cause a wash-in ring selection border continuous worsening, seriously affect concentrate grade, increased water flow is again easily
The water velocity in washing cylinder is speeded, so that quite a few microfine concentrate rises to the combination of washing bucket and overflow weir with water flow
Place, herein, when to mine or water supply fluctuation bigger than normal, the concentrate of floating zone is passed into tailing for the concentrate hovering of slightly larger granularity, runs mine
Seriously, the waste of resource is caused.When to mine or water supply fluctuation less than normal, the nonmagnetic tailings of floating zone are sunk in washing cylinder, are made
Elutriation environment in cylinder is destroyed, and is caused concentrate grade unstable, is influenced product quality；The overflow weir for reducing diameter is only overflowing
The position of head piece improves water velocity, causes the region pressure difference very little in overflow port and cylinder engaging portion washing cylinder below,
Ascending current speed slows down, and causes concentrate to separate with non magnetic mine and is not thorough, is unable to reach ideal sorting result.
In addition, traditional electromagnetism wash mill generallys use too long mineral-feeding pipe, so that mine mouth is located at the third and fourth pulsation out
The center of the fair cylinder of magnet exciting coil, causes first, second coil on top not have effect, since too long gives mine
Pipe, shortens the settling height of ore pulp, and rolling number is reduced, and reduces concentrate grade.In order to improve concentrate grade, water is used in increasing
Amount improves water velocity, it is serious that mine is run while concentrate grade is promoted, and waste a large amount of water resource.Even if the first arteries and veins
The top of moving field coil is equipped with the coil of stationary magnetic field, only attached to barrel since the stationary magnetic field characteristic of the coil is limited
Close concentrate has suction-operated.The stationary magnetic field coil only has adsorption function due to the attribute question of DC power supply,
After concentrate powder is adsorbed, do not have the ability of rolling, therefore, inner inclusion can not be extruded, when the miberal powder being adsorbed reaches
When a certain amount of, part miberal powder is detached from magnetically confined, crashes into washing cylinder, non-inside iron powder due to not having rolling, rubbing function
Magnetism is mingled with also to be crashed into washing cylinder together, is damaged to the environment that sorts stable in cylinder, is led to the concentrate grade of output not
Stablize.Meanwhile the magnetic field of center is gradually successively decreased along barrel to cylinder, so that cylinder inner part region is as no magnetic region and weak magnetic
Area is that the microfine concentrate risen with water flow can not be adsorbed using magnetic field when water flow is bigger than normal for the region, therefore,
The stationary magnetic field coil acted under stable sorting environment it is very little, water flow or ore pulp amount fluctuation it is bigger than normal when, and rise not
To conclusive coal controlling, cause to run mine.The lower end of mineral-feeding pipe is along the circumferential direction evenly equipped with cloth mine mouth, this cloth mine mode be with
The mode being overlapped with washing cylinder axis is into mine, when ore pulp arrives at mineral-feeding pipe bottom again with the direction perpendicular to axis through each uniformly distributed
Cloth mine mouth flow into ascending current, due to cloth mine mouth away from inner tube wall farther out, magnetic field is weak to ore pulp restraining force at this, in this area
Domain can not form magnetic linkage substantially, can not produce magnetic rolling effect, and because settling height is too short, the unreasonable position Bu Kuang,
It is one of the key factor for influencing concentrate grade superiority and inferiority that mode and too long mineral-feeding pipe, which cause settling height too short,.
Secondly, the water inlet of traditional electromagnetism wash mill is evenly arranged on the horizontal circumference of washing cylinder lower part, directly in horizontal circle
Aperture on week makes the water flow entered in cylinder in disordered state, causes the concentrate of sedimentation so far is disturbed again to break up, to enrichment essence
Mine causes great destruction, even if mine coil is held together in the enrichment that water inlet lower part is provided with stationary magnetic field, for being in washing
The concentrate powder at cylinder center is also difficult to the enrichment adsorbed, do not had.Therefore, water inlet and setting water inlet are set in this position
The mode of mouth is improper；The horizontal zone of the four, the 5th coils is arranged in admission port by producer also, outside washing cylinder
Water pipe is accessed in cylinder at perpendicular to washing cylinder axis, then connects water inlet pipe that one is overlapped with washing cylinder axis to the four, the 5th
The horizontal zone of coil will block at the top of water inlet pipe, and level is evenly equipped with distributive pipe on the circumference of water inlet pipe top, divides water at every
Several water outlets are evenly equipped on the ipsilateral horizontal plane of pipe, make water flow in rising spiral status, when entering this region due to concentrate
Grade has reached perfect condition, exactly is enriched with the critical stage of mine, through elevating screw turbulent water, by the concentrate of preliminary concentration
Powder is broken up again, is unfavorable for holding together mine.Also, it is gradual from top to bottom in this region cloth water destruct cylinder to improve condition of water quality
Rule, shows that a kind of water supply region water quality is optimal, lower area takes second place, top area is worst, leads to the concentrate face handled well
Face the problem of polluting again.
Also, the power supply of traditional electromagnetism wash mill uses direct current excitation, and by silicon-controlled alternate energisation, makes between coil
Alternate pulsating field is generated, for example, forming magnetic linkage when 1,3,5 coils are powered simultaneously positioned at concentrate powder herein, being in fixation
Concentrate powder in magnetic field only forms magnetic linkage, and concentrate intergranular is relatively motionless, can not wash and be precipitated internal non magnetic field trash by rubbing with the hands, breaks
When electric, magnetic linkage disappears, and concentrate powder continues to sink, and a part of microfine concentrate powder is in the case where no magnetic field is adsorbed with ascending current
With in, fine-graded nonmagnetics discharge into tailing.2, when 4,6 coils are powered, concentrate powder is by the state in the period of a upper magnetic field
180 ° of rotation forms magnetic linkage again, and the energization interval of two groups of coils interval time due to sorting environment difference is different, approximate range
Between 1-6 seconds, while realizing magnetic rolling effect in cycles, interval also results in a large amount of microfine essence without the magnetic sky window phase
Miberal powder is thrown to tailing, and the waste of vast resources is caused.
Further, since earth's surface, underground, region is different, and ore properties is caused to have differences, and accordingly, there exist easy ore dressings and hardly possible
Point of ore dressing.For the difference of ore properties, the emphasis in each dressing plant is also different.In the premise that concentrate grade has been set
Under, mine is run in the control tail of easy ore dressing as much as possible, control.Difficult ore dressing as much as possible propose essence.Due to the difference of ore properties,
The emphasis for causing ore dressing is different, different emphasis, causes wash mill that must have big flux control range and therewith
Matched rolling number and rubbing function, however, the flux control narrow range of Traditional DC electromagnetism wash mill, does not have and wash function by rubbing with the hands
Can, it is not able to satisfy the huge ore of difference and sorts requirement, mineral processing index is caused to be unable to satisfy customer requirement.
Summary of the invention
In view of this, the technical problems to be solved by the present invention are: to provide a kind of concentrate grade high, good separation effect low
Frequency alternating electromagnetic wash mill.
In order to solve the above technical problems, the technical scheme is that low-frequency ac electromagnetism wash mill, comprising: washing cylinder,
Washing cylinder bottom is provided with concentrate cone cylinder, is provided with overflow mechanism at the top of the washing cylinder, the overflow mechanism is equipped with
The mine-feeding equipment inside the washing cylinder is protruded into, is provided with outside the washing cylinder to the water supply of the washing cylinder private water supply and is filled
It sets, the periphery of the washing cylinder is provided with concentration equipment, and the concentration equipment includes being sheathed on washing cylinder periphery and edge
Multiple field coils of the washing cylinder axially spaced-apart setting, the field coil are passed through low frequency ac.
It is the multinomial further improvement place of low-frequency ac electromagnetism wash mill of the present invention below:
Wherein, the field coil include positioned at top hold together mine field coil and positioned at it is described hold together mine field coil below
Several travelling-magnetic-field coils.
Wherein, it is described hold together mine field coil be passed through single-phase low-frequency ac, several described travelling-magnetic-field coils are passed through three
Phase low frequency ac.
Wherein, the frequency of the three-phase low-frequency ac is lower than 50Hz, and the frequency of the single-phase low-frequency ac is lower than
50Hz。
Wherein, further, the frequency range of the three-phase low-frequency ac is in 0.1-20Hz, the single-phase low-frequency ac
The frequency range of electricity is in 0.1-20Hz.
Wherein, the mode of connection of several travelling-magnetic-field coils is Y-shaped connection, or " △ " shape connection.
Wherein, the concentration equipment further include: reaction magnetic ring, the reaction magnetic ring are set to inside the washing cylinder, and
And with it is described hold together the position of mine field coil it is corresponding.
Wherein, the reaction magnetic ring includes: the multiple beckets for being nested together and being arranged concentrically, adjacent becket it
Between it is spaced, the interval is provided with the reinforcing rib for being fixedly connected with adjacent metal ring, the adjacent becket, the reinforcement
Muscle surrounds magnet ring channel jointly.
Wherein, the becket of innermost layer is fixed with the mine-feeding equipment.
Wherein, the axial section of the reaction magnetic ring is in shuttle shape.
Wherein, the reaction magnetic ring is made of high permeability material.
Wherein, the overflow mechanism includes overflow sleeves and the overflow inner cylinder that is set to inside the overflow sleeves, described
It is fixedly connected at the top of the lower end of overflow inner cylinder and the washing cylinder, the overflow inner cylinder and the washing cylinder are isometrical.
Wherein, the mine-feeding equipment includes: mineral-feeding pipe, and the upper end periphery of the mineral-feeding pipe is fixed with support arm, the branch
The outer end of brace and the top of the overflow mechanism are fixed, the bottom seal of the mineral-feeding pipe, the lower end periphery of the mineral-feeding pipe
The multiple cloth pipes being connected with its inner cavity are fixed with, the mine mouth that goes out of the cloth pipe is located at the axial position inside the washing cylinder
It sets consistent with medium position between second, third field coil is counted from up to down.
Wherein, the cloth pipe go out mine mouth be located at the radial position inside the washing cylinder the washing cylinder inner wall extremely
The center of distance between the mineral-feeding pipe outer wall.
Wherein, the ore removal opening's edge tangential direction arrangement of multiple cloth pipes.
Wherein, the cloth pipe includes radial section and the tangential section that connect with the outer end of the radial section, the tangential section
The other end be it is described go out mine mouth, the inner end of the radial section be fixedly connected with the lower end periphery of the mineral-feeding pipe and in it
Chamber is connected.
Wherein, the radial section of the cloth pipe tilts down setting relative to the mineral-feeding pipe.
Wherein, the upper end periphery of the mineral-feeding pipe be fixed be connected with its inner cavity into pipe.
Wherein, the open top of the mineral-feeding pipe.
Wherein, the water supply device includes: the water jacket that ring is placed in the concentrate cone cylinder outer wall upper end, in the concentrate cone cylinder
Wall upper end is provided with the multiple jet pipes being connected with the water jacket inner cavity.
Wherein, the water discharging direction of the jet pipe is in arranged tangential, and consistent with the ore removal direction of the mine-feeding equipment.
Wherein, the jet pipe is provided with one layer, or is provided with up and down two layers or two layers or more, and each layer all includes
Multiple jet pipes；The jet pipe position of adjacent layer interlocks.
After above-mentioned technical proposal, beneficial effects of the present invention are as follows:
What is be passed through due to the field coil of low-frequency ac electromagnetism wash mill of the present invention is low frequency ac, and field coil is powered
When, the concentrate powder being in alternating magnetic field not only forms magnetic linkage, but also concentrate intergranular can relative motion, there is overturning, wash by rubbing with the hands
Function improves concentrate grade, good separation effect so that internal non magnetic field trash be precipitated；Meanwhile it being handed over compared to direct current
For step mode, using low-frequency ac power supply mode excitation, there is no no magnetic sky window phases, avoid a large amount of microfine concentrate powder quilts
It throws to tailing, avoids the wasting of resources.
Since position corresponding with mine field coil is held together is provided with reaction magnetic ring inside washing cylinder, hold together the energization of mine field coil
Afterwards, magnetic field induction improves the magnetic field force around mine-feeding equipment outer wall, solves because of water on the reaction magnetic ring inside washing cylinder
Stream or ore pulp fluctuation are bigger than normal, cause the problem of running mine along mine-feeding equipment outer wall.Meanwhile there is periodic low frequency ac to be passed through
Hold together mine field coil, so that the concentrate powder being adsorbed on reaction magnetic ring also has both periodicity while being adsorbed by reaction magnetic ring
Ground magnetic rolling, in addition the phase mutual friction between concentrate powder, wash by rubbing with the hands, make to be mixed in the non magnetic mine in concentrate powder and constantly squeeze out, it is upper
It rises water flow to take out of, tend to be steady with water supply, to mine, the concentrate powder being adsorbed on reaction magnetic ring the more is inhaled the more more, reaches a certain amount of
When, part concentrate powder is sunk to again in washing cylinder, due to the relationship of low-frequency ac excitation field characteristic, is adsorbed on reaction magnetic ring
Concentrate powder there is magnetic rolling, friction, rubbing function so that the miberal powder for crashing into washing cylinder loses the non magnetic condition being mingled with,
Therefore, it sorts environment to stable in cylinder and will not damage, so that concentrate grade is more stable.
Since the axial section of reaction magnetic ring is in shuttle shape, the height of becket is higher and higher from outer ring to inner ring, and area is got over
Come bigger, the outer ring becket close to washing barrel can be made to more easily reach magnetic saturation state, and will not be to inner ring metal
Ring, which forms magnetic field, to be stopped, and such structure is conducive to being evenly distributed with for magnetic field, so that magnetic field forms magnetic curtain, Du in this region of reaction magnetic ring
Absolutely tool it is magnetic in, rich intergrowth and monomer concentrate escaped to tailing by weak magnetic area, cause to run mine.
Since the frequency of low frequency ac is lower than the frequency 50Hz of industrial-frequency alternating current, during magnetic separation, so that concentrate grain exists
There is time enough to put to enough amplitudes of oscillation under a certain rollover states, has been created for the non magnetic field trash inside being thoroughly precipitated
Sharp condition.For different ore attributes, desired rolling number can be reached by frequency modulation and washes number by rubbing with the hands, thus more efficient
Controllable raising concentrate grade and concentrate yield.
Since the mode of connection of travelling-magnetic-field coil is Y-shaped connection, or " △ " shape connection；Y-shaped connection can make
Travelling-magnetic-field coil obtains high exciting current and high magnetic field intensity, meets the requirement of middle and high magnetic field ore dressing；" △ " shape connection can be with
So that travelling-magnetic-field coil is obtained low exciting current and low magnetic field intensity, meets the requirement of low-intensity magnetic field ore dressing；It is flexible in application, it is applicable in model
It encloses extensively, is able to satisfy the huge ore of difference and sorts requirement.
Since overflow inner cylinder and washing cylinder are isometrical, so that washing cylinder is consistent with the flow velocity in overflow inner cylinder, solves race mine
Or the problem of nest mine.
Due to the multiple cloth pipes of mineral-feeding pipe lower end periphery go out mine mouth be located at axial position inside washing cylinder and on to
Medium position between lower second, third field coil of number is consistent, compared with prior art, elongated miberal powder settling height and
Magnetic separation path extends the magnetic separation time, improves concentrate grade.Since the mine mouth that goes out of cloth pipe is located at the radial direction inside washing cylinder
Position is close apart from washing cylinder inner wall in washing cylinder inner wall to the center of distance between mineral-feeding pipe outer wall, enables travelling-magnetic-field
More efficiently intervene ore dressing, concentrate is quickly opposite with poor, weak intergrowth and the non magnetic mine of monomer and goes, and accelerates separation, mentions
High concentrate grade.It is synchronous with the rotary water current of rising since the ore removal opening's edge tangential direction of multiple cloth pipes is arranged, sinking
Concentrate powder and ascending current resistance each other, prevent concentrate powder subsidence velocity too fast, increase the magnetic separation time, improve concentrate product
Position.
It is penetrated since concentrate cone cylinder inner wall upper end is provided be connected with the water jacket inner cavity of concentrate cone cylinder outer wall upper end multiple
Flow tube, compared with the prior art, water supply device are set to the concentrate cone cylinder below washing cylinder, reduce the position of water supply device,
The water flow avoided enter into washing cylinder is avoided in disordered state so that the concentrate broken up and be settled down to washing cylinder lower part will not be disturbed
Effect is damaged to enrichment concentrate, it is ensured that concentrate is smoothly enriched with to concentrate cone cylinder.Since the water discharging direction of jet pipe is in tangential
Arrangement, and it is consistent with the ore removal direction of cloth pipe, and when being passed through water, the water flow injected in concentrate cone cylinder forms rotation in cone cylinder
Water flow, as the concentrate powder of pulsation rolling continues into the rotary water current in concentrate cone cylinder, due to water and concentrate powder density contrast
Reason, concentrate powder by biggish centrifugal force, concentrate powder continue with water flow it is mobile to concentrate cone cylinder inner wall, final concentrate powder along
Concentrate cone cylinder inner wall positioned at the jet pipe back side slides into concentrate valve, discharges into concentrate pool.
In conclusion low-frequency ac electromagnetism wash mill of the invention, multiple field coils of concentration equipment are passed through low frequency
Alternating current, travelling-magnetic-field coil use Y-shaped connection or " △ " shape connection, correspond to mine field coil position in washing cylinder
Reaction magnetic ring is arranged in portion；Multiple cloth pipes are arranged in the mineral-feeding pipe lower end periphery of its mine-feeding equipment, and multiple cloth pipes go out mine mouth axis
Consistent with medium position between second, third field coil is counted from up to down to position, the radial position of ore removal mouth is in washing cylinder
Inner wall to distance between mineral-feeding pipe outer wall center；The overflow inner cylinder and washing cylinder of its overflow mechanism are isometrical；Its water supply device
The concentrate cone cylinder being set to below washing cylinder；Low-frequency ac electromagnetism wash mill of the invention is passed through in ascending current and field coil
Under low-frequency ac electro ultrafiltration, concentrate powder sedimentation is realized, chain link, rolling, rubs, wash removal of impurities by rubbing with the hands, eventually by rotary water current richness
Collection, concentration, realize high-grade ore dressing, and ore dressing wide adaptation range.
Detailed description of the invention
Fig. 1 is the low-frequency ac electromagnetism wash mill structure sectional plan view of the embodiment of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the top view of reaction magnetic ring in Fig. 1；
Fig. 4 is A-A cross-sectional view in Fig. 3；
Fig. 5 is the main view of mine-feeding equipment in Fig. 1；
Fig. 6 is B-B cross-sectional view in Fig. 5；
Fig. 7 is the sectional plan view of concentrate cone cylinder in Fig. 1；
Fig. 8 is the top view of Fig. 7；
Fig. 9 is the travelling-magnetic-field coil Y-shaped wiring diagram in Fig. 1；
Figure 10 is the circuit diagram of Fig. 9；
Figure 11 is travelling-magnetic-field coil " △ " shape wiring diagram in Fig. 1；
Figure 12 is Figure 11 circuit diagram；
In figure: 1- washing cylinder；2- overflow mechanism；21- overflow inner cylinder；22- overflow sleeves；23- circular bottom plate；24- tailing
Mouthful；3- mine-feeding equipment；31- mineral-feeding pipe；32- support arm；33- is into pipe；34- cloth pipe；341- radial section；The tangential section of 342-；
4- reaction magnetic ring；41- becket；42- reinforcing rib；5- concentrate cone cylinder；51- concentrate mouth；52- valve；6- jet pipe；7- water jacket；
The upper plectane of 71-；Plectane under 72-；73- vertical plate；74- water inlet pipe；8- insulation board；9- travelling-magnetic-field coil；The first travelling-magnetic-field of 9a-
Coil；9b- the second travelling-magnetic-field coil；9c- third traveling wave field coil；9d- fourth line wave field coil；9e- fifth line wave
Field coil；The 6th travelling-magnetic-field coil of 9f-；10- mica paper；11- holds together mine field coil；The non-magnetic metal plate of 12-；13- is anti-
Shield；14- terminal box；15- fastening bolt.
Specific embodiment
Further details of non-limitative illustration is made to the present invention with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, low-frequency ac electromagnetism wash mill of the invention, comprising: washing cylinder 1, the weldering of 1 bottom of washing cylinder
It connects and is fixed with concentrate cone cylinder 5, the lower end of concentrate cone cylinder 5 is provided with concentrate mouth 51, and the valve for adjusting ore discharge is equipped at concentrate mouth 51
Door 52；Overflow mechanism 2 is provided at the top of washing cylinder 1；The mine-feeding equipment 3 protruded into inside washing cylinder 1 is installed on overflow mechanism 2；
The water supply device to 1 private water supply of washing cylinder is provided with outside washing cylinder 1；The periphery of washing cylinder 1 is provided with concentration equipment, magnetic separation
Device includes being sheathed on 1 periphery of washing cylinder and along washing cylinder 1 axially through the spaced multiple field coils of insulation board 8,
Field coil is annular in shape, and inner ring is close to 1 outer wall area of washing cylinder, and the mica paper 10 for being provided with tubular makees insulator,
Field coil includes the travelling-magnetic-field coil 9 for holding together mine field coil 11 and be located to hold together 11 lower section of mine field coil positioned at top,
To hold together 11 top of mine field coil and is provided with insulation board 8, the top of insulation board 8 is provided with the non-magnetic metal plate 12 of coil pressing,
The outer circle of non-magnetic metal plate 12 is identical as 71 outer circle of upper plectane of following water jackets 7, the travelling-magnetic-field coil 9 after fastening and holds together mine
Field coil 11 is set with cylindric shield 13 between non-magnetic metal plate 12 and upper plectane 71, avoids ore pulp and water pair
Travelling-magnetic-field coil 9 is damaged with mine field coil 11 is held together, and terminal box 14, field coil and wiring are fixed with outside shield 13
The connection of box 14 is passed through low frequency ac.
As shown in Fig. 9 to Figure 12, wherein travelling-magnetic-field coil 9 include several equidistantly uniformly distributed coils, from up to down according to
It is secondary to be identified as the first traveling wave field coil 9a, the second travelling-magnetic-field coil 9b, third traveling wave field coil 9c, fourth line wave magnetic field
Coil 9d, fifth line wave field coil 9e, the 6th travelling-magnetic-field coil 9f.
Wherein, travelling-magnetic-field coil 9 is passed through three-phase low-frequency ac, holds together mine field coil 11 and is passed through single-phase low-frequency ac
Electricity.Also, the frequency of three-phase low-frequency ac is lower than 50Hz, and the frequency of single-phase low-frequency ac is lower than 50Hz, i.e., is all lower than work
The frequency of frequency alternating current.The frequency range of preferred triple-phase low frequency ac is in 0.1-20Hz, the frequency model of single-phase low-frequency ac
It is trapped among 0.1-20Hz.
As shown in Figure 9 and Figure 10, wherein the mode of connection of several travelling-magnetic-field coils is Y-shaped connection, it may be assumed that first
Travelling-magnetic-field coil 9a is concatenated with fourth line wave field coil 9d, and one end connects phase line U, another to be connected to common node；Second
Travelling-magnetic-field coil 9b is concatenated with fifth line wave field coil 9e, and one end connects phase line V, another to be connected to common node；Third
Travelling-magnetic-field coil 9c is concatenated with the 6th travelling-magnetic-field coil 9f, and one end connects phase line W, another to be connected to common node.Using
Y-shaped connection can make travelling-magnetic-field coil obtain high exciting current and high magnetic field intensity, meet wanting for middle and high magnetic field ore dressing
It asks.
As is illustrated by figs. 11 and 12, wherein the mode of connection of several travelling-magnetic-field coils can also be connect using " △ " shape
Method, it may be assumed that the first traveling wave field coil 9a, the second travelling-magnetic-field coil 9b, third traveling wave field coil 9c, fourth line wave magnetic field line
Enclose 9d, fifth line wave field coil 9e, the connection of the 6th travelling-magnetic-field first place coil 9f, the first traveling wave field coil 9a and the 6th row
The node of wave field coil 9f connects phase line W, and the second travelling-magnetic-field coil 9b is connect with the node of third traveling wave field coil 9c
Phase line U, fourth line wave field coil 9d connect phase line V with the node of fifth line wave field coil 9e.It, can using " △ " shape connection
So that travelling-magnetic-field coil obtains low exciting current and low magnetic field intensity, meet the requirement of low-intensity magnetic field ore dressing.
As shown in Figure 1, wherein concentration equipment further include: be set to 1 inside of washing cylinder and made of high permeability material
Reaction magnetic ring 4, such as electrical pure iron or Q235A material, reaction magnetic ring 4 be sleeved on the mineral-feeding pipe 31 of following mine-feeding equipments 3,
And it is corresponding with the position for holding together mine field coil 11.Best way is, the horizontal axis of reaction magnetic ring 4 and holds together mine field coil 11
Horizontal axis be overlapped.
As shown in Figure 3 and Figure 4, wherein reaction magnetic ring 4 includes: the multiple beckets 41 for being nested together and being arranged concentrically,
Spaced between adjacent becket 41, interval is provided with the reinforcing rib 42 for being welded to connect adjacent metal ring 41, adjacent
Magnet ring channel is surrounded jointly between becket 41, adjacent reinforcing rib 42.Wherein, the becket 41 of innermost layer and mineral-feeding pipe 31 are solid
It is fixed.
Wherein, the axial section of reaction magnetic ring 4 is in shuttle shape, the height of becket 41 higher and higher, face from outer ring to inner ring
Product is increasing, the outer ring becket close to washing barrel can be made to more easily reach magnetic saturation state, and will not be to inner ring
Metal ring stops at magnetic field, is conducive to being evenly distributed with for magnetic field, so that magnetic field forms magnetic curtain in this region of reaction magnetic ring 4, prevents
During tool is magnetic, rich intergrowth and monomer concentrate escaped to tailing by weak magnetic area, cause to run mine.
As shown in Figure 1, wherein overflow mechanism 2 includes in overflow sleeves 22 and the overflow being set to inside overflow sleeves 22
Cylinder 21, the lower end of overflow inner cylinder 21 are fastened and connected with the top of washing cylinder 1 by flange and the realization of fastening bolt 15, overflow
Inner cylinder 21 and 1 equal diameter of washing cylinder.The circular bottom plate 23 being obliquely installed is set on overflow inner cylinder 21, overflow sleeves 22 are along circle
The outer eaves of bottom plate 23 is vertically arranged, and the tailing mouth 24 vertical with overflow sleeves 22 is provided in the lower position of circular bottom plate 23, is overflow
The upper plane of stream casing 22 is in a horizontal state, and is higher than upper plane 50-200 millimeters of overflow inner cylinder 21, and two planes are parallel each other
Relationship.Overflow inner cylinder 21 solves race mine so that washing cylinder 1 is consistent with the flow velocity in overflow inner cylinder 21 with 1 equal diameter of washing cylinder
Or nest mine problem.
As shown in Fig. 1, Fig. 5 and Fig. 6, wherein mine-feeding equipment 3 includes: mineral-feeding pipe 31, and the upper end periphery of mineral-feeding pipe 31 is fixed
There is support arm 32, is welded and fixed at the top of the outer end of support arm 32 and the overflow sleeves 22 of overflow mechanism 2, the bottom envelope of mineral-feeding pipe 31
Mouthful, the lower end periphery of mineral-feeding pipe 31 is fixed with the multiple cloth pipes 34 being connected with its inner cavity, and the mine mouth that goes out of cloth pipe 34 is located at
The medium position one between axial position and the first traveling wave field coil 9a, the second travelling-magnetic-field coil 9b inside washing cylinder 1
It causes.Wherein, the mine mouth that goes out of cloth pipe 34 is located at the radial position inside washing cylinder 1 in 1 inner wall of washing cylinder to 31 outer wall of mineral-feeding pipe
Between distance center.
Wherein, the ore removal opening's edge tangential direction arrangement of multiple cloth pipes 34.Wherein, cloth pipe 34 includes 341 He of radial section
The tangential section 342 connecting with the outer end of radial section 341, the other end of tangential section 342 are mine mouth, the inner end of radial section 341 with
The lower end periphery of mineral-feeding pipe 31 is fixedly connected and is connected with its inner cavity.
Wherein, the radial section 341 of cloth pipe 34 tilts down setting relative to mineral-feeding pipe 31, and such set-up mode ensures have
The component of gravity direction, ore removal are smooth.
Wherein, the open top of mineral-feeding pipe 31, clear mine easy to repair, can also by the open top to mine.May be used also
With the fixed setting of the upper end periphery of mineral-feeding pipe 31 be connected with its inner cavity into pipe 33, by into the realization mineral-feeding pipe of pipe 33
31 side is to mine.
As shown in figs. 1,7 and 8, wherein water supply device includes: the water jacket 7 that ring is placed in 5 outer wall upper end of concentrate cone cylinder,
Water jacket 7 seals soldering by the tubular vertical plate 73 of upper plectane 71, lower plectane 72 and centre and forms, along 73 inner wall tangential direction water of vertical plate
It is flat to be provided with water inlet pipe 74；Outer circle, which is provided with, between upper plectane 71 and the travelling-magnetic-field coil of bottommost is slightly less than plectane 71
Insulation board 8；5 inner wall upper end of concentrate cone cylinder is provided with the multiple uniformly distributed jet pipes 6 being connected with 7 inner cavity of water jacket, and jet pipe 6 leans on
The bottom of nearly washing cylinder 1.
Wherein, the water discharging direction of jet pipe 6 is in arranged tangential, consistent with the ore removal direction of cloth pipe 34 of mine-feeding equipment 3.
Wherein, jet pipe 6 needs can be set one layer according to water supply, or up and down be arranged two layers or two layers with
On, each layer all includes multiple jet pipes 6；6 desired positions of jet pipe of adjacent layer are interlocked, it is ensured that are supplied water uniform.
Low-frequency ac electromagnetism wash mill of the invention, multiple field coils of concentration equipment are passed through low frequency ac, row
Wave field coil 9 uses Y-shaped connection or " △ " shape connection, corresponds to mine field coil 11 and sense is arranged inside washing cylinder 1
Answer magnet ring 4；31 lower end periphery of mineral-feeding pipe of its mine-feeding equipment 3 is provided with multiple cloth pipes 34, and cloth pipe 34 goes out mine mouth axial direction
Medium position between position and the first traveling wave field coil 9a, the second travelling-magnetic-field coil 9b is consistent, ore removal mouth radial position
In 1 inner wall of washing cylinder to the center of distance between 31 outer wall of mineral-feeding pipe, the position Bu Kuang and cloth mine mode are reasonable；Its overflow mechanism
2 overflow inner cylinder 21 and 1 equal diameter of washing cylinder solves the problems, such as to run mine or nest mine；Its water supply device is set to 1 lower section of washing cylinder
Concentrate cone cylinder 5, reduce the position of water supply device, the concentrate broken up and be settled down to 1 lower part of washing cylinder will not be disturbed, it is ensured that concentrate
It is smoothly enriched with to concentrate cone cylinder 5；Low-frequency ac electromagnetism wash mill of the invention is passed through low frequency in ascending current and field coil and hands over
Under galvanic electricity effect, concentrate powder sedimentation is realized, chain link, rolling, rubs, wash removal of impurities by rubbing with the hands, is enriched with eventually by rotary water current, is dense
Contracting, realizes high-grade ore dressing, and ore dressing wide adaptation range.
Claims (10)
1. low-frequency ac electromagnetism wash mill, comprising: washing cylinder, washing cylinder bottom are provided with concentrate cone cylinder, the washing cylinder
Top is provided with overflow mechanism, and the overflow mechanism is equipped with the mine-feeding equipment protruded into inside the washing cylinder, the washing cylinder
Outside is provided with the water supply device to the washing cylinder private water supply, and the periphery of the washing cylinder is provided with concentration equipment, described
Concentration equipment includes the multiple field coils for being sheathed on washing cylinder periphery and being arranged along the washing cylinder axially spaced-apart,
It is characterized in that, the field coil is passed through low frequency ac.
2. low-frequency ac electromagnetism wash mill as described in claim 1, which is characterized in that the field coil includes being located at top
Hold together mine field coil and positioned at it is described hold together mine field coil below several travelling-magnetic-field coils；It is described hold together mine field coil
It is passed through single-phase low-frequency ac, several described travelling-magnetic-field coils are passed through three-phase low-frequency ac.
3. low-frequency ac electromagnetism wash mill as claimed in claim 2, which is characterized in that the frequency of the three-phase low-frequency ac
Lower than 50Hz, the frequency of the single-phase low-frequency ac is lower than 50Hz.
4. low-frequency ac electromagnetism wash mill as claimed in claim 3, which is characterized in that the frequency of the three-phase low-frequency ac
Range is in 0.1-20Hz, and the frequency range of the single-phase low-frequency ac is in 0.1-20Hz.
5. low-frequency ac electromagnetism wash mill as claimed in claim 2, which is characterized in that several travelling-magnetic-field coils
The mode of connection is Y-shaped connection, or " △ " shape connection.
6. low-frequency ac electromagnetism wash mill as claimed in claim 2, which is characterized in that the concentration equipment further include: induction
Magnet ring, the reaction magnetic ring are set to inside the washing cylinder, and with it is described hold together the position of mine field coil it is corresponding；
The reaction magnetic ring includes: the multiple beckets for being nested together and being arranged concentrically, between adjacent becket there are
Every the interval is provided with the reinforcing rib for being fixedly connected with adjacent metal ring, and the adjacent becket, the reinforcing rib enclose jointly
At magnet ring channel；The becket of innermost layer is fixed with the mine-feeding equipment；
The axial section of the reaction magnetic ring is in shuttle shape；
The reaction magnetic ring is made of high permeability material.
7. low-frequency ac electromagnetism wash mill as described in claim 1, which is characterized in that the overflow mechanism includes overflow sleeves
With the overflow inner cylinder being set to inside the overflow sleeves, the top of the lower end of the overflow inner cylinder and the washing cylinder is fixed to be connected
It connects, the overflow inner cylinder and the washing cylinder are isometrical.
8. low-frequency ac electromagnetism wash mill as described in claim 1, which is characterized in that the mine-feeding equipment includes: mineral-feeding pipe,
The upper end periphery of the mineral-feeding pipe is fixed with support arm, and the outer end of the support arm and the top of the overflow mechanism are fixed, institute
The bottom seal of mineral-feeding pipe is stated, the lower end periphery of the mineral-feeding pipe is fixed with the multiple cloth pipes being connected with its inner cavity, described
The mine mouth that goes out of cloth pipe is located at the axial position inside the washing cylinder and is counted between second, third field coil from up to down
Medium position is consistent；
The cloth pipe go out mine mouth be located at the radial position inside the washing cylinder in the washing cylinder inner wall to described to mine
The center of distance between pipe outer wall；
The ore removal opening's edge tangential direction of multiple cloth pipes is arranged.
9. low-frequency ac electromagnetism wash mill as claimed in claim 8, which is characterized in that the cloth pipe include radial section and with
The tangential section of the outer end connection of the radial section, the other end of the tangential section are the mine mouth out, the inner end of the radial section
It is fixedly connected with the lower end periphery of the mineral-feeding pipe and is connected with its inner cavity；The radial section of the cloth pipe relative to
The mineral-feeding pipe tilts down setting；
The upper end periphery of the mineral-feeding pipe be fixed be connected with its inner cavity into pipe；The open top of the mineral-feeding pipe.
10. low-frequency ac electromagnetism wash mill as described in claim 1, which is characterized in that the water supply device includes: that ring is placed in
The water jacket of the concentrate cone cylinder outer wall upper end, the concentrate cone cylinder inner wall upper end be provided be connected with the water jacket inner cavity it is more
A jet pipe；
The water discharging direction of the jet pipe is in arranged tangential, and consistent with the ore removal direction of the mine-feeding equipment；The jet stream
Pipe is provided with one layer, or is provided with up and down two layers or two layers or more, and each layer all includes multiple jet pipes；Adjacent layer
The jet pipe position interlock.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910198699.XA CN109746117B (en) | 2019-03-15 | 2019-03-15 | Low-frequency ac electromagnetic elutriation machine |
| PCT/CN2019/084166 WO2020186596A1 (en) | 2019-03-15 | 2019-04-25 | Low-frequency alternating-current electromagnetic elutriating machine |
| AU2019436089A AU2019436089B2 (en) | 2019-03-15 | 2019-04-25 | Low-frequency alternating-current electromagnetic elutriating machine |
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| CN201910198699.XA CN109746117B (en) | 2019-03-15 | 2019-03-15 | Low-frequency ac electromagnetic elutriation machine |
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| CN109746117B CN109746117B (en) | 2023-10-10 |
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