CN214077224U - Multiple-separation magnetic micro-fluidic sorter - Google Patents

Abstract

The utility model provides a multiple sorting magnetic micro-fluidic classificator, include: the device comprises a feeding device, a sorting device, an upper tailing collecting device, a lower tailing overflowing device and a lower water supply device; wherein, the feeding device is used for conveying ore pulp; the middle upper part of the sorting device is provided with the feeding device and is communicated with an ore pulp outlet of the feeding device, so that magnetic particles in the ore pulp are sorted out to form concentrate, and the concentrate is discharged; the upper tailing collecting device is sleeved outside the sorting device; the lower tailings overflow means is arranged inside the sorting device in a region below the feeding means. The utility model discloses a multiple separation row tail for the separation of the impurity particle in the ore pulp is more thorough, and separation efficiency is higher, has effectively promoted the discharge efficiency of impurity, has improved the grade promotion range of concentrate.

Description

Multiple-separation magnetic micro-fluidic sorter

Technical Field

The utility model relates to a magnetic separation ore dressing technical field particularly, relates to a multiple magnetic micro-fluidic preparator of selecting separately.

Background

At present, equipment used in magnetite concentration plants comprises a magnetic separator, a desliming tank, a magnetic separation column, an elutriation machine and the like, wherein the magnetic separator is a permanent magnetic product, the working principle is that magnetic materials are adsorbed out under the action of magnetic force, and separated concentrate is mostly accompanied with magnetic impurities to influence the concentrate grade. The desliming tank is permanent magnetism class product, uses now less, and the theory of operation utilizes material gravity, rising water buoyancy, magnetic field force combined action to select separately, nevertheless because of its magnetic field is single permanent magnetism fixed magnetic field, can't adjust magnetic field intensity to different operating modes, selects separately inefficiency, and the fluctuation of the material of selecting into influences the selection effect great. The magnetic separation column and the elutriation machine are electromagnetic products, ore pulp is fed into the middle upper part of the separation cylinder along the center of the separation cylinder through a feeder in the working process, and tailings overflow upwards from the top of the separation cylinder. The coils are sequentially and alternately electrified to form an intermittent pulsating magnetic field, magnetic particles are in an agglomeration, dispersion and agglomeration alternate state with the existence of the magnetic field, and non-magnetic gangue, slurry and the magnetic particles are separated under the action of gravity and buoyancy of rising water. Due to the adoption of one-time separation, the discharge and water consumption of impurities cannot be well controlled in the process, the separation is not accurate enough, the grade of the concentrate is low in promotion range, and the tail running phenomenon is easy to generate.

Disclosure of Invention

In view of this, the utility model provides a multiple separation magnetic micro-fluidic preparator aims at solving current time and selects equipment to select separately not accurate enough, and concentrate grade promotion range is low, and easily produces the problem of running tail phenomenon.

In one aspect, the utility model provides a multiple separation magnetic micro-fluidic preparator, include: the feeding device is used for conveying ore pulp; the sorting device is arranged at the middle upper part, is provided with the feeding device and is positioned below the middle upper part of the sorting device, and is communicated with the ore pulp outlet of the feeding device so as to sort out the magnetic particles in the ore pulp to form concentrate and discharge the concentrate; the upper tailing overflow collecting device is sleeved outside the sorting device, the top of the upper tailing overflow device is positioned above the top opening of the sorting device, and the upper tailing overflow collecting device is used for collecting tailings overflowing from the upper area of the sorting device; optionally an upper feed water device, the water outlet of which is arranged below the pulp outlet of the feeding device, for flushing the tailings in the upper area of the sorting device and making the tailings overflow into the upper tailings overflow collecting device; bottom tailing overflow device tailing collection device a tailing overflow device disposed within the separation device in an area of the feed device proximate a bottom of the separation device for collecting tailings overflowing from the bottom area of the separation device; a lower water feed means located within the separation means and disposed in a region below the upper edge of said lower tailings overflow means tailings collection means tailings overflow means for flushing tailings in the lower region of said separation means and overflowing tailings therein into said upper tailings collection means and said lower tailings overflow means tailings collection means tailings overflow means, respectively.

Further, in the multi-separation magnetic micro-fluidic concentrator, a separator is arranged between the lower tailing collecting device and the feeding device and used for separating the separating device into an upper separating area and a lower separating area.

Further, in the above-mentioned multiple sorting magneto-microfluidic sorter, still include: and the water outlet of the upper water supply device is arranged below the ore pulp outlet of the feeding device and used for flushing water into the upper area of the sorting device and enabling the tailings in the upper area to overflow into the upper tailing collecting device.

Further, in the above multiple-separation magnetomicrofluidic concentrator, the feeding device includes: a feeding pipe and a distributing device which are connected; wherein the outlet end of the feed pipe extends into the upper region of the sorting device, and the feed pipe is tangentially provided with an ore feed pipe for tangentially feeding ore pulp into the feed pipe and then swirling to descend therein; the distributing device is connected with the outlet end of the feeding pipe and used for uniformly dispersing ore pulp into the sorting device.

Further, in the above-mentioned multiple sorting magneto-microfluidic concentrator, the distributor includes: an upper conical plate and a lower conical plate; the upper conical plate and the lower conical plate are coaxially arranged, a feeding channel is formed between the upper conical plate and the lower conical plate, and an outlet of the feeding channel is close to the side wall of the sorting device.

Furthermore, in the multi-separation magnetic micro-fluidic concentrator, a separator is arranged between the distributor and the lower tailing collecting device, and a water circulation channel is reserved between the separator and the lower conical plate.

Further, in the above multiple separation magnetomicrofluidic concentrator, the upper water supply device includes: the horizontal water pipe and the vertical water pipe are communicated; the horizontal water pipe is arranged at the top of the feeding device, and at least one of two ends of the horizontal water pipe is connected with a first water feeding valve; the vertical water pipe is inserted into a feeding pipe of the feeding device.

Further, in the multi-separation magnetic micro-fluidic sorter, an inclined plane is arranged at the bottom of the upper tailing collecting device, and an upper tailing conveying pipe is arranged on one side, close to the lowest point of the inclined plane, of the upper tailing collecting device.

Further, in the multi-separation magnetic micro-fluidic sorter, a cover body is arranged on the outer side wall of the separation device, and a magnetic field unit is sleeved between the cover body and the outer side wall of the separation device and used for providing a magnetic field environment for the interior of the separation device; and a concentrate discharge valve is arranged at the bottom of the separation device and used for controlling the discharge amount of the concentrate.

Further, in the above multiple-sort magnetomicrofluidic sorter, the sorting device includes: the first straight cylinder section, the reducing section, the second straight cylinder section and the cone section are sequentially communicated from top to bottom, and the caliber of the reducing section is gradually reduced; wherein a first sensor is arranged at the top of the first straight cylinder section and used for detecting ore pulp parameters in a side area below the top of the lower tailing overflow device; a second sensor is arranged on the side wall of the first straight cylinder section at a position below the upper tailing overflow device and used for detecting parameters of ore pulp in the top area of the sorting device; the cone section is provided with a third sensor for detecting ore pulp parameters at the cone.

Further, in the above multiple sorting magnetomicrofluidic sorter, the first straight cylinder section and the second straight cylinder section of the sorting device may have the same diameter, and there is no reduced diameter section, that is, the upper part of the cone of the sorting device may be a straight cylinder with the same diameter.

Furthermore, in the multi-separation magnetic micro-fluidic sorter, two ends of the lower tailing collecting device are open, an outlet end of the lower tailing collecting device is connected with a lower tailing conveying pipe, and the lower tailing conveying pipe extends to the outside of the sorting device and is used for conveying tailings to the outside of the sorting device.

Further, in the multi-separation magnetic micro-fluidic sorter, the lower water supply device is of a cylindrical structure and is annularly arranged around the lower tailing conveying pipe by taking the lower tailing conveying pipe as an axis; the lower water supply device is communicated with an external water source through a water supply pipe, and a second water supply valve is arranged on the water supply pipe; and the side wall of the lower water supply device is provided with a plurality of lower water outlets for flushing the falling ore pulp.

The utility model provides a multiple separation magnetic micro-fluidic classificator, give the ore pulp through feeder to sorting unit in, and arrange the tail respectively to the tailing in the ore pulp through sorting unit top and the inside lower tailing overflow arrangement that is close to the below region, and provide the lift water for the ore pulp of different regions in the sorting unit respectively through last water supply installation and lower water supply installation, the utilization ratio of water and the sorting precision of different regions in the sorting unit have been improved, finally realize multiple separation, the function of multiple row tail, make the separation of impurity particle in the ore pulp more thorough, separation efficiency is higher, the discharge efficiency of impurity has effectively been promoted, the grade lifting range of concentrate has been improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural diagram of a multiple-separation magnetomicrofluidic concentrator according to an embodiment of the present invention;

fig. 2 is a top view of a feeding device according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment of the utility model provides an in the embodiment, multiple separation magnetic micro-fluidic preparator is a magnetic metal ore dressing equipment, and during mainly used desilting desilication and the fine magnetic separation operation of wet-type, can be used to the mineral desilication desilting, improve the grade of mineral or guarantee that the certain grade prerequisite is transferred and roughly go into the granularity of selecting.

Referring to fig. 1, the magnetic micro-fluidic sorter for multiple sorting according to the embodiment of the present invention comprises: the device comprises a feeding device 1, a sorting device 2, an upper tailing collecting device 3, a lower tailing overflow device 5 and a lower water supply device 6; wherein the feeding device 1 is used for conveying ore pulp; the feeding device 1 is arranged at the middle upper part of the sorting device 2 and is communicated with a pulp outlet of the feeding device 1 so as to sort out magnetic particles in the pulp to form concentrate, and discharge the concentrate; the upper tailing collecting device 3 is sleeved outside the sorting device 2 and is used for collecting the tailing overflowing from the upper area of the sorting device 2; a lower tailing overflow device 5 is arranged inside the sorting device 2 in a region below the feeding device 1 for collecting tailing overflowing from the lower region of the sorting device 2; the lower water supply device 6 is positioned inside the sorting device 2 and below the upper edge of the lower tailing overflow device 5, and is used for flushing water into the sorting device 2 and enabling the tailings in the lower tailing overflow device to overflow into the upper tailing collecting device 3 and the lower tailing overflow device 5 respectively.

Specifically, the feeding device 1 may have a square or cylindrical structure, and is communicated with the slurry conveying pipe. The outlet of the feed device 1 may extend into a region of the sorting device 2 close to above. The feeding device 1 may be arranged in the middle of the top of the sorting device 2.

The sorting device 2 can be of a cylindrical structure, wherein the feeding device 1 is arranged at the upper part of the sorting device, the sorting device 2 can be arranged coaxially with the feeding device 1, a cover body 20 is arranged on the outer side wall of the sorting device 2, and a magnetic field unit 7 is sleeved between the cover body 20 and the outer side wall of the sorting device 2 and used for providing a magnetic field environment for the interior of the sorting device 2 so as to sort out magnetic particles; the magnetic field unit 7 can generate or induce a magnetic field; the bottom of the sorting device 2 is provided with a concentrate discharge valve 25 for controlling the discharge of concentrate. In practice, the magnetic field intensity can be changed by adjusting the magnetic field intensity of the magnetic field unit 7, so as to adjust the separation working state of the ore pulp.

More specifically, the cover 20 may include: the upper barrel body and the lower barrel body are communicated; wherein, the upper cylinder body is arranged on the side wall of the sorting device 2 and is positioned below the upper tailing collecting device 3; the diameter of the upper cylinder may be equal to the diameter of the lower cylinder. Correspondingly, a first magnetic system 71 is sleeved between the upper cylinder and the outer wall of the sorting device 2, a second magnetic system 72 is sleeved between the lower cylinder 202 and the outer wall of the sorting device 2, and the first magnetic system 71 and the second magnetic system 72 both belong to the magnetic field unit 7; the first magnetic system 71 and the second magnetic system 72 may be identical.

Preferably, in the present embodiment, the sorting device 2 includes: a first straight cylinder section 21, a reducing section 22 with gradually reduced caliber, a second straight cylinder section 23 and a cone section 24 which are sequentially communicated from top to bottom; wherein a first sensor 8 is arranged at the top of the first straight cylinder section 21, and the first sensor 8 is inserted into a region below the top of the lower tailing overflow device 5 through a conduit or an elongated probe to detect the ore pulp parameter in the region; a second sensor 9 is arranged on the side wall of the first straight section 21 below the upper tailing collecting device 3 and is used for detecting parameters of ore pulp in the upper area of the sorting device 2; the cone section 24 is provided with a third sensor 10 for sensing a pulp parameter of the cone section. The ore pulp parameter detected by the sensor can be the density, concentration, pressure or grade of the ore pulp. Wherein:

the reduced diameter section 22 with a decreasing caliber can be a truncated cone shaped structure (upper caliber is larger than lower caliber). The obtained ore pulp parameters are fed back to the control system by the sensors, and the control system adjusts the opening of the concentrate discharge valve 25 and/or the water supply quantity of the upper and lower water supply devices, the magnetic field intensity of the magnetic field unit and the opening of the tailing discharge valve 511 according to the received ore pulp parameters so as to adjust the separation state of the equipment. For example, when the concentration of the ore pulp detected by the second sensor 9 is larger, indicating that tailing is possible to run, the tailing can be avoided by increasing the magnetic field intensity or reducing the water supply quantity of the lower water supply device or increasing the opening degree of the concentrate discharge valve 25; the opening of the concentrate discharge valve 25 can be increased when the pulp concentration detected by the third sensor 10 is higher, and vice versa the opening of the concentrate discharge valve 25 is decreased.

It can be seen that the utility model discloses combining the program automatic control in the switch board, can reaching the accurate and select separately, promoting the grade range big, the operation is stable, is difficult for running the tail, the effect of using water wisely.

In this embodiment, the first sensor 8, the second sensor 9, and the third sensor 10 may be a density sensor, a concentration sensor, a pressure sensor, or a grade sensor, respectively; the first sensor 8, the second sensor 9 and the third sensor 10 may be the same type of sensor or different types of sensors.

In this embodiment, the top of the upper tailing collecting device 3 may be located above the top opening of the sorting device 2, the tailings overflow from the top opening of the sorting device 2 into the upper tailing collecting device 3, the bottom of the upper tailing collecting device 3 has an inclined surface, and one side of the upper tailing collecting device close to the lowest point of the inclined surface is provided with an upper tailing conveying pipe 31. For example, the upper tailings collection apparatus 3 may be a right-angled trapezoidal vessel with an inverted cross-section, and the upper tailings duct 31 is provided on the side with the larger floor area.

Owing to often can not thoroughly discharge impurities such as gangue and poor intergrowth in the ore pulp through a row of tails, still have some impurity to follow magnetic particle and descend to the formation concentrate in sorting unit 2 bottom, cause concentrate purity to promote limitedly, in this embodiment, the region that is located feed arrangement 1 below in sorting unit 2 sets up lower part tailing overflow arrangement 5 to carry out the secondary discharge to the descending impurity granule along sorting unit 2.

A lower water feed 6 is located within the sorting device 2 below the upper edge of the lower tailings overflow 5 to flush water into the sorting device so that tailings therein enter the upper tailings collection device and the lower tailings overflow device respectively.

The upper end and the lower end of the lower tailing overflow device 5 are open, the lower outlet end of the lower tailing overflow device 5 is connected with a lower tailing conveying pipe 51, and the lower tailing conveying pipe 51 extends to the outside of the sorting device 2 to convey tailings to the outside of the sorting device 2.

The lower tailing overflow devices 5 can be provided with a plurality of devices, the lower water supply devices 6 can be provided with a plurality of devices, and one lower water supply device 6 is arranged below each lower tailing overflow device 5 to form a set of tailing discharge mechanism. A plurality of sets of tailing discharging mechanisms are stacked up and down. The lower tailing overflow devices 5 are communicated through the respective lower tailing conveying pipes 51, and each lower water supply device 6 can be sleeved outside the lower tailing conveying pipes 51 to form the effect of multi-stage tailing discharge. The lower tailing transport pipes 51 may be nested or arranged side by side.

Upper portion tailing collection device 3, lower part tailing overflow arrangement 5, sorting unit 2 mutually support with the magnetic field unit 7 of lateral wall suit, and the accurate control in final cooperation magnetic field has solved the control concentrate that can not be fine and has mingled with, and the water consumption is big, selects separately not accurate enough, easily produces when improving the concentrate grade by a wide margin and runs the tail, takes up an area of the big and operation unstability scheduling problem.

It should be noted that the tailings in this embodiment are formed by impurities in the slurry in the separation device 2.

In this embodiment, an intelligent control cabinet may be further included to control the water supply amount of the lower water supply device 6 to adjust the magnetic field strength of the magnetic field unit and/or the opening degree of the concentrate discharge valve 25, etc., so as to realize accurate separation and avoid the tail-running phenomenon.

The above obviously can be derived, the multiple separation magnetic micro-fluidic concentrator provided in this embodiment feeds the ore pulp into the separation device 2 through the feeding device 1, and discharges the tailings in the ore pulp through the top of the separation device 2 and the tailing overflow device 5 located in the lower area of the feeding device 1, and supplies the lifting water for the ore pulp in different areas in the separation device 2 through the tailing water supply device 6, and automatically regulates and controls the water supply amount in different areas through programs, so that the water utilization rate and the separation precision in different areas in the separation device 2 are improved, and finally, multiple separation and multiple tailing discharge functions are realized, so that the separation of impurity particles in the ore pulp is more thorough, the separation efficiency is higher, the impurity discharge efficiency is effectively improved, and the grade promotion range of the ore concentrate is improved.

In the above embodiment, a partition a is provided between the lower tailing overflow 5 and the feeding device 1 to divide the sorting device 2 into the upper sorting region a and the lower sorting region B.

Specifically, the tailings underflow overflow device 5 may be arranged inside the sorting device 2 in a region below the feeding device 1 along the central axis of the sorting device 2, and may be divided by a partition a arranged therebetween. The partition piece a can be coaxially sleeved inside the sorting device 2 and is positioned below the feeding device 1, and a pulp flow channel is respectively formed between the partition piece a and the sorting device 2 and between the partition piece a and the lower tailing overflow device 5. More specifically, the shape of the separator a may be a cylindrical structure with an open bottom, an umbrella-shaped structure, or the like, in this embodiment, the separator a may be an umbrella-shaped plate-shaped structure, and an annular baffle is annularly provided at the bottom edge of the umbrella-shaped plate-shaped structure, so as to better prevent ore pulp falling in the upper region of the sorting device 2 from being directly discharged through the lower tailing overflow device 5. In this embodiment, separator a also can set up a plurality ofly to cooperate with a plurality of lower part tailing overflow arrangement 5, separate sorting unit 2 for a plurality of sorting area, with the multiple row of tail of better realization multiple sorting, improve the accuracy of sorting.

In the above embodiments, the feeding device 1 includes: a feeding pipe 11 and a distributing device 12 which are connected; wherein the outlet end of the feed pipe 11 extends into the upper region of the sorting device 2, and the feed pipe 11 is tangentially provided with a feed pipe 110 for feeding slurry tangentially into the feed pipe 11 and swirling downward therein; the distributing device 12 is connected with the outlet end of the feeding pipe 11 and used for uniformly dispersing ore pulp into the sorting device 2. The material can be directly fed into the sorting device 2 from the outlet of the feeding pipe 11 without the distributor 12.

Specifically, the feeding pipe 11 may be a straight pipe, and may be a funnel-shaped structure with a reduced diameter section in the middle. The feed pipe 11 is tangentially provided with a feed pipe 110 for causing the slurry to enter the feed pipe 11 tangentially and to swirl downwardly therein.

The feed pipe 11 is provided with a grate 111 for screening out large foreign matters in the ore pulp, so that the phenomenon of blockage inside the sorting device 2 is avoided. The perforated strainer 111 can be in an annular plate-shaped structure, the hollow part of the perforated strainer 111 can be sleeved on the outer wall of a water supply pipeline of the upper water supply device 4, and the outer peripheral wall of the perforated strainer 111 can be detachably connected with the inner wall of the feeding pipe 11, so that sundries on the perforated strainer 111 can be cleaned conveniently. The shape and size of the mesh of the perforated strainer 111 can be determined according to the actual situation, and the embodiment does not limit the mesh. The perforated strainer 111 may not be provided in the feed pipe 11.

Further, the distributor 12 includes: an upper tapered plate 121 and a lower tapered plate 122; wherein the upper conical plate 121 and the lower conical plate 122 are coaxially arranged, a feeding channel 120 is formed between the upper conical plate and the lower conical plate, and an outlet 123 of the feeding channel 120 is arranged close to the side wall of the sorting device 2. The outlet 123 of the distributor 12 is arranged close to the side wall of the sorting device 2 and can feed the pulp to a strong magnetic field position close to the magnetic system. Because magnetic field intensity is big, the magnetic particle is difficult to be washed away by the rivers, can effectively prevent the tailing of sorting unit 2 top overflow from running the tail.

Further, a partition a is arranged between the distributor and the tailing overflow device, and a water flow channel is reserved between the partition a and the lower conical plate 122; a water flow passage is reserved between the partition a and the lower tapered plate 122, and the water flow passage is communicated with the outlet end of the upper water supply device 4.

In the foregoing embodiments, the method may further include: an upper water feed means 4 having a water outlet arranged below the slurry outlet of the feed means for flushing water into the upper region of the separation means 2 and causing tailings therein to overflow into the upper tailings collection means 3.

Specifically, the upper water supply device 4 may be disposed outside the separator 2 or inside the separator 2, for example, the water outlet of the upper water supply device 4 may be disposed on the sidewall of the separator 2 and below the slurry outlet 123 of the feeder 1. In the embodiment, the tailing running phenomenon can be avoided by controlling the water supply amount of the upper water supply device and/or the lower water supply device. For example, when the concentration of the ore pulp detected by the second sensor 9 is larger, the tailing phenomenon can be avoided by increasing the magnetic field intensity or reducing the water feeding amount of the upper water feeding device and the lower water feeding device or increasing the opening degree of the concentrate discharge valve 25.

Referring to fig. 2, in the above embodiment, the upper water supply means 4 includes: a horizontal water pipe 41 and a vertical water pipe 42 which are communicated with each other; wherein, the horizontal water pipe 41 is arranged at the top of the feeding device 1, and at least one of two ends of the horizontal water pipe 41 is connected with a first water feeding valve 411; the vertical water pipe 42 is inserted into the feeding pipe 11 of the feeding device 1.

Specifically, a water channel is provided between the partition a and the lower tapered plate 122 of the distributor 12, and the water channel is communicated with the vertical pipe through a conical top opening of the lower tapered plate 122 or other means. The water inlet side of the horizontal water pipe 41 is provided with a first water feed valve 411, thereby controlling the water supply amount of the sorting area A in the sorting device 2. The grate 111 in the feeding pipe 11 can be sleeved on the outer wall of the vertical water pipe 42.

Namely: the upper water supply means 4 is preferably a T-shaped water pipe opened at the conical tip of the lower conical plate 122 so that water flows into a water flow passage between the lower conical plate 122 and the partition a.

It can be seen that the ore pulp continues to move downwards to the middle lower part of the sorting device 2 after passing through the space between the edge of the partition piece a and the sorting device 2, and impurity particles such as gangue and poor intergrowth are flushed upwards again under the action of the upward water flow. These secondary flushed out impurity particles form secondary tailings which overflow again through the upper edge of the lower tailings overflow means 5, the overflowed tailings enter the lower tailings overflow means 5 and are then discharged through a lower tailings duct 51 provided at the outlet end of the lower tailings overflow means 5, and a tailings discharge valve 511 is provided at the outer outlet of the lower tailings duct 51 to control the discharge amount of the tailings.

Furthermore, the detection position 81 of the first sensor 8 is located in the lower part of the partition a and detects by means of a conduit or by extending the probe directly to this area in order to accurately detect the relevant parameter of the slurry entering the flow channel between the partition a and the lower tailings overflow 5.

In the above embodiment, the lower tailing overflow device 5 is open at two ends, and the outlet end of the lower tailing overflow device 5 is connected with the lower tailing conveying pipe 51, and the lower tailing conveying pipe 51 extends to the outside of the sorting device 2 to convey the tailings to the outside of the sorting device 2.

Specifically, the lower tailing overflow device 5 is in a straight cylinder or funnel-shaped structure. The lower tailings overflow means 5 may be arranged coaxially inside the partition a. The outlet end of the lower tailing conveying pipe 51 extends to the outside of the sorting device 2, and the outlet end of the lower tailing conveying pipe 51 is connected with a tailing discharge valve 511 for regulating and controlling the amount of the discharged tailings; of course, the outlet end of the lower tailing pipe 51 may also be provided with a flow meter to detect the amount of tailings.

In the above embodiment, the lower water supply device 6 is a cylindrical structure, and is arranged around the lower tailings conveying pipe 51 by taking the lower tailings conveying pipe 51 as an axis; the lower water supply device 6 is communicated with an external water source through a water supply pipe 62, and the water supply pipe is provided with a second water supply valve 63 for controlling the water supply amount of the lower water supply device 6; and a plurality of lower water outlets 61 are formed in the side wall of the lower water supply device 6 and used for flushing ore pulp.

Specifically, the lower water supply device 6 may have a straight tube structure, or may have a structure in which the upper portion has a tapered tube shape (one end having a smaller diameter faces upward, and the other end having a larger diameter faces downward) and the lower portion has a straight tube shape, and the end having a larger diameter of the tapered tube shape communicates with the straight tube shape. The lower water outlets 61 are arranged at different positions on the side wall of the lower water supply device 6, and each lower water outlet 61 can be arranged along the tangential direction of the side wall of the lower water supply device 6 and can also be arranged vertical to the side wall of the lower water supply device 6 so as to provide upward water flow for ore pulp in different areas in the separation device 2.

Furthermore, the lower water supply device 6 may be provided with a plurality of partition plates (not shown in the figure) for dividing the lower water supply device 6 into at least two water chambers; each water cavity is communicated with an external water source through a water conveying pipe, and a water outlet is formed in the side wall of each water cavity.

Referring to fig. 1-2, the working process of the multiple separation magnetic micro-fluidic sorter of the embodiment of the present invention is: the slurry is fed into the upper sorting zone a of the sorting device 2 by the feed device 1, and after entering the sorting device 2, the magnetic particles are agglomerated and settled downwards under the action of a magnetic field generated or induced by a magnetic field unit on the side wall of the sorting device 2 to finally form concentrate to be discharged, impurities such as gangue and poor intergrowth cannot be influenced by the magnetic field, a part of the impurities are in a sorting area A on the upper part of the sorting device 2, is flushed by the upward flowing back water to form tailings, and finally overflows from a tailing collecting device at the top of the sorting device 2 and is discharged into an upper tailing collecting device 3, after the part which is not completely discharged continuously enters the lower separation area B of the separation device 2 along with the ore pulp, under the action of the upward backwash water in this region, the remaining undischarged gangue and poor consortia are flushed upward again and discharged through the lower tailings overflow 5 inside the sorting device 2. Finally, the impurities in the ore pulp are respectively sorted and discharged for multiple times. The concentrate finally enters the conical section at the bottom of the sorting device 2 and finally exits the sorting device 2 through the concentrate discharge valve 25. In the separation process, the first sensor 8, the second sensor 9 and the third sensor 10 respectively obtain relevant parameters of ore pulp at the lower tailing overflow device 5, ore pulp at the upper area of the separation device 2 of the tailing collection device and ore pulp at the bottom cone of the separation device 2 in real time, and the ore pulp parameters can be parameters such as density, concentration, pressure or grade of the ore pulp. The water supply quantity of the upper water supply device and the lower water supply device, the magnetic field intensity of the magnetic field unit 7, the opening degrees of the concentrate discharge valve 25 and the tailing discharge valve 511 are controlled by the control system, so that the separation state of the equipment can be regulated in real time, and the separation is accurate.

To sum up, the utility model discloses a feeder 1 feeds the ore pulp into sorting unit 2, and arrange the tail respectively to the tailing in the ore pulp through sorting unit 2 top and the inside lower tailing overflow arrangement 5 that is close to the lower region, and provide the lift water for the ore pulp of different regions in sorting unit 2 respectively through upper portion water supply installation 4 and lower part water supply installation 6, make the separation of the impurity particle in the ore pulp more thorough, sorting efficiency is higher, has effectively promoted the discharge efficiency of impurity, has improved the grade promotion range of concentrate; meanwhile, the upper water supply device 4 and the lower water supply device 6 can control respective water supply amount through valves, and the water supply amount precision of the water for respective separation of the upper part and the lower part is improved. Meanwhile, the amount of the tailings discharged by the lower tailing overflow device 5 can be controlled by controlling the opening degree of the tailing discharge valve 511, so that the tailings are independently separated for multiple times and discharged for multiple times at different positions in the separation cylinder, the tailings are not influenced mutually, real multiple separation can be realized, the separation efficiency is improved, the separation index is stabilized, the grade improvement range is increased, and the beneficial effects of water conservation and environmental protection are achieved.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (12)

1. A multiple sort magneto-microfluidic sorter comprising:

a feeding device (1) for conveying ore pulp;

the feeding device (1) is positioned at the middle upper part of the sorting device, and the sorting device is communicated with a pulp outlet of the feeding device (1) and is used for sorting magnetic particles in the pulp to form concentrate and discharging the concentrate;

the upper tailing collecting device (3) is sleeved outside the sorting device (2) and is used for collecting the tailing overflowing from the upper area of the sorting device (2);

-a lower tailing overflow (5) arranged inside the sorting device (2) in a region below the feeding device (1) for collecting tailing overflowing in the lower region of the sorting device (2);

-a lower water feed means (6) located within the sorting device (2) and arranged in the area below the upper edge of the lower tailings overflow means (5) for flushing water into the sorting device (2) and causing tailings therein to overflow into the upper tailings collection means (3) and the lower tailings overflow means (5), respectively.

2. The multi-classification magnetomicrofluidic concentrator of claim 1, wherein a partition (a) is provided between the underflow overflow device and the feeding device (1) to separate the sorting device (2) into an upper sorting region (a) and a lower sorting region (B).

3. The multi-sort magneto-microfluidic concentrator of claim 1, further comprising: an upper water supply device (4) with a water outlet arranged below the pulp outlet of the feeding device (1) for flushing water into the upper region of the sorting device (2) and overflowing tailings therein into the upper tailings collection device (3).

4. The multi-sort magnetomicrofluidic concentrator of claim 1, wherein the feed device (1) comprises: a feeding pipe (11) and a distributing device (12) which are connected; wherein the content of the first and second substances,

the outlet end of the feed pipe (11) extends into the upper region of the sorting device (2), and the feed pipe (11) is tangentially provided with a feeding pipe (110) for feeding ore pulp tangentially into the feed pipe (11) and making the ore pulp swirl downwards in the feed pipe;

the distributing device (12) is connected with the outlet end of the feeding pipe (11) and used for uniformly dispersing ore pulp into the sorting device (2).

5. The multiple sort magnetomicrofluidic concentrator of claim 4 wherein the distributor (12) comprises: an upper tapered plate (121) and a lower tapered plate (122); wherein the content of the first and second substances,

the upper conical plate (121) and the lower conical plate (122) are coaxially arranged, a feeding channel (120) is formed between the upper conical plate and the lower conical plate, and an outlet of the feeding channel (120) is close to the side wall of the sorting device (2).

6. The multi-separation magnetic micro-fluidic concentrator according to claim 5, wherein a partition (a) is arranged between the distributor (12) and the lower tailing overflow device (5), and a water flow channel is reserved between the partition (a) and the lower conical plate (122).

7. The multi-sort magnetomicrofluidic concentrator of claim 3, wherein the upper water feed means (4) comprises: a horizontal water pipe (41) and a vertical water pipe (42) which are communicated with each other; wherein the content of the first and second substances,

the horizontal water pipe (41) is arranged at the top of the feeding device (1), and at least one of two ends of the horizontal water pipe (41) is connected with a first water feeding valve (411);

the vertical water pipe (42) is inserted into a feeding pipe (11) of the feeding device (1).

8. The multi-separation magnetomicrofluidic concentrator of claim 1, wherein the bottom of the upper tailings collection device (3) is provided with an inclined plane, and one side of the upper tailings collection device (3) close to the lowest point of the inclined plane is provided with an upper tailings conveying pipe (31).

9. The multi-separation magnetomicrofluidic concentrator of claim 1, wherein the outer side wall of the separation device (2) is provided with a cover body (20), and a magnetic field unit (7) is sleeved between the cover body (20) and the outer side wall of the separation device (2) and used for providing a magnetic field environment for the interior of the separation device (2); and a concentrate discharge valve (25) is arranged at the bottom of the separation device (2) and used for controlling the discharge amount of the concentrate.

10. The multisorting magnetomicrofluidic concentrator according to claim 1, wherein the sorting device (2) comprises: a first straight cylinder section (21), a reducing section (22) with gradually reduced caliber, a second straight cylinder section (23) and a cone section (24) which are sequentially communicated from top to bottom; wherein the content of the first and second substances,

a first sensor (8) is arranged at the top of the first straight barrel section (21), and the first sensor (8) is used for detecting ore pulp parameters in a side area below the top of the lower tailing overflow device (5); a second sensor (9) is arranged on the side wall of the first straight section (21) at a position below the upper tailing collecting device (3) and is used for detecting parameters of ore pulp in the top area of the sorting device (2); the cone section (24) is provided with a third sensor (10) for detecting a pulp parameter of the cone section.

11. The multi-separation magnetomicrofluidic concentrator of claim 1, wherein the lower tailings overflow device (5) is open at both ends, and a lower tailings conveying pipe (51) is connected to an outlet end of the lower tailings overflow device (5), and the lower tailings conveying pipe (51) extends to the outside of the separation device (2) to convey tailings to the outside of the separation device (2).

12. The multi-separation magnetomicrofluidic concentrator of claim 11, wherein the lower water supply device (6) is of a cylindrical structure and is annularly arranged around the lower tailings conveying pipe (51) with the lower tailings conveying pipe (51) as an axis; the lower water supply device (6) is communicated with an external water source through a water supply pipe (62), and a second water supply valve (63) is arranged on the water supply pipe (62); and the side wall of the lower water supply device (6) is provided with a plurality of lower water outlets (61) for flushing ore pulp.

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