Permanent magnet separator with multiple layers of magnetic poles, multiple separation grooves and movable shielding plates

Abstract

The utility model relates to a permanent magnet separator with multiple layers of magnetic poles, multiple separation grooves and movable shielding plates, which comprises a plurality of separation grooves arranged in parallel, an ore feeding pipe, a water replenishing pipe, a concentrate pipe, an overflow groove and a driving mechanism, and is characterized in that a magnetic system consists of a plurality of magnetic pole groups, the magnetic pole groups are arranged on the two sides of the outer part of the separation grooves and are alternately arranged with the separation grooves, and the magnetic pole groups are arranged in the overflow groove. The magnetic pole sets are fixed on the magnetic system support, each magnetic pole set is composed of N layers of magnetic poles, the corresponding magnetic poles of every two adjacent magnetic pole sets are alternately arranged on the two sides of the separation grooves from top to bottom, a shielding plate assembly is arranged on the outer side of each separation groove, and each shielding plate assembly is composed of a shielding plate support and a shielding plate. And the driving mechanism is fixedly connected with the outer end of the shielding plate bracket so as to drive the shielding plate bracket to reciprocate up and down and further drive the shielding plate which linearly reciprocates up and down to periodically shield the magnetic pole. The utility model has the advantages of simple structure, doubled magnetic energy utilization rate and high space utilization rate; and the magnetic wrapping phenomenon is few.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic separation equipment, and in particular relates to a multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator with simple structure and low cost. Background Art

[0002] Permanent magnetic drum separators and magnetic separation columns have been widely used in magnetite beneficiation plants and are the main equipment of magnetic separation plants. The operating drum and transmission system of the permanent magnetic drum separator are complex in structure, which not only increases the manufacturing cost and energy consumption, but also is prone to failure. Frequent maintenance is required, which affects production, and the magnetic wrapping phenomenon is serious, affecting the separation effect. The magnetic separation column uses an excitation coil to generate an electromagnetic field from top to bottom, cyclically, with adjustable magnetic field strength and cycle in the separation space, so that the magnetic particles in the slurry produce multiple agglomeration-dispersion-agglomeration-dispersion phenomena. Therefore, under the action of the rising water flow, the medium and poor intergrowths and monomer gangue mixed in the magnetic agglomeration can be fully separated to obtain high-grade concentrate; however, the disadvantages of this equipment are that the equipment structure is complex, the cost is high, the electromagnetic conversion and control mechanism are prone to failure, the energy consumption is high, the water consumption is large, and the concentrate tailings are always "mixed" together during the separation process, and there will still be a certain degree of magnetic wrapping.

[0003] The invention patent with the patent number ZL201410015771.8 discloses a permanent magnetic separation column. The invention patent sets a central axis in the magnetic separation column, sets several layers of magnetic system on the central axis, sets a rotating drum driven by a motor outside the magnetic system, forms a separation tank between the rotating drum and the outer cylinder of the magnetic separation column, and the multi-layer magnetic field distribution of the separation tank makes the magnetic minerals agglomerate-disperse-agglomerate, and the non-magnetic particles are discharged from the top with the rising water flow. The invention patent has a complex structure and high cost. In the separation process, the concentrate that descends due to gravity and the tailings that rise due to the rising water flow both move in the vertical direction without separation. When the magnetic particles agglomerate again under the action of the magnetic field, magnetic wrapping will also occur. Summary of the invention

[0004] The utility model aims to provide a multi-layer magnetic pole multi-sorting slot moving shielding plate permanent magnetic separator with simple structure and low cost.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The utility model discloses a multi-layer magnetic pole multi-sorting slot moving shielding plate permanent magnetic separator, comprising a plurality of sorting slots arranged in parallel, a feed pipe arranged at the top of each sorting slot, a water supply pipe arranged at the bottom of each sorting slot, a concentrate pipe arranged at the bottom of each sorting slot, a common overflow slot arranged at the top of the sorting slot, and a tailings pipe arranged on one side of the overflow slot. The utility model is characterized in that: it also includes a magnetic pole group, a magnetic system bracket, a shielding plate assembly and a shielding plate assembly driving mechanism, the magnetic pole groups are respectively arranged on both sides and in the middle of the plurality of sorting slots, the magnetic pole groups are composed of upper and lower N layers of magnetic poles, two adjacent groups of magnetic pole groups are respectively arranged alternately from top to bottom on both sides of the outside of the corresponding sorting slots, and the magnetic pole groups of each two adjacent sorting slots are arranged in mirror image correspondence;

[0007] A shielding plate assembly is provided on the outside of each sorting slot, and the shielding plate assembly includes a shielding plate bracket and a shielding plate. The shielding plate bracket is composed of transverse brackets respectively arranged on the outside of the sorting slot and first outer longitudinal brackets respectively inserted between the outside of the sorting slot and each magnetic pole group and vertically connected to the outer end of the transverse bracket, second inner longitudinal brackets respectively inserted between the inner side of the sorting slot and each magnetic pole group and vertically connected to the inner end of the transverse bracket, and a connecting plate connecting the two second inner longitudinal brackets. Shielding plates are provided on the upper and lower ends of the first longitudinal outer bracket and the second inner longitudinal bracket. The shielding plate assemblies of two adjacent sorting slots are arranged in mirror image. The shielding plate assembly driving mechanism is fixedly connected to the outer end of the transverse bracket on the outside of the sorting slot, thereby driving the shielding plate bracket to reciprocate up and down, and then driving the shielding plate to reciprocate up and down in a straight line to perform periodic shielding on the magnetic poles.

[0008] Preferably, the plurality of sorting slots are M sorting slots with an open box body at the top and a cone body at the bottom, wherein M≥1, and are made of non-magnetic material.

[0009] Preferably, the N layers of magnetic poles are permanent magnetic systems, wherein N≥2.

[0010] Preferably, the width of the separation trough is 120-200 mm; the magnetic induction intensity of the magnetic pole group is 600-2000 Gauss.

[0011] Preferably, the shielding plate is made of soft ferromagnetic material electromagnetic pure iron.

[0012] Preferably, the magnetic system support is composed of a horizontal plate beam and M+1 magnetic pole group supports arranged perpendicularly to the horizontal plate beam, the magnetic pole group support is provided with N layers of brackets, and the M+1 magnetic pole group supports are vertically fixed on the horizontal plate beam at equal intervals.

[0013] Preferably, control valves are provided on the ore feeding pipe, concentrate pipe and water supply pipe.

[0014] 1) The structure is very simple, the production cost is low, and the investment is small;

[0015] 2) Adopting permanent magnet system, low energy consumption;

[0016] 3) M sorting slots are arranged in parallel, and two adjacent sorting slots share the middle magnetic system group, which doubles the magnetic energy utilization and improves the space utilization;

[0017] 4) The utility model can make the magnetic mineral particles fall along a "Z" path under the action of the magnetic field, and the non-magnetic particles rise along a straight line under the action of the rising water flow, thereby reducing the occurrence of magnetic wrapping phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 for Figure 1 AA section view. DETAILED DESCRIPTION

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a multi-layer magnetic pole multi-sorting slot moving shielding plate permanent magnetic separator of the utility model comprises a plurality of sorting slots arranged in parallel, a feed pipe 1 arranged at the upper part of each sorting slot, a water supply pipe 9 arranged at the lower part of each sorting slot, a concentrate pipe arranged at the bottom of each sorting slot, a common overflow slot 4 arranged at the top of the sorting slot, a tailings pipe 3 is arranged on one side of the overflow slot 4, and is characterized in that: it also includes a magnetic pole group, a magnetic system bracket, a shielding plate assembly and a shielding plate assembly driving mechanism, the magnetic pole groups are respectively arranged on both sides and in the middle of the plurality of sorting slots, the magnetic pole groups are composed of upper and lower N layers of magnetic poles, and two adjacent groups of magnetic pole groups are respectively arranged alternately from top to bottom on both sides of the outside of the corresponding sorting slots, and the magnetic pole groups of each two adjacent sorting slots are arranged in mirror image correspondence;

[0022] A shielding plate assembly is provided on the outside of each sorting slot, and the shielding plate assembly includes transverse brackets 83 respectively arranged on the outside of the sorting slot, first outer longitudinal brackets 81 respectively inserted between the outside of the sorting slot and each magnetic pole group and vertically connected to the outer end of the transverse bracket 83, second inner longitudinal brackets 82 respectively inserted between the inner side of the sorting slot and each magnetic pole group and vertically connected to the inner end of the transverse bracket 83, and a connecting plate 84 connecting two adjacent second inner longitudinal brackets. The second inner longitudinal bracket is arranged lower than the first outer longitudinal bracket 81, and shielding plates 10 are provided on the first longitudinal outer bracket 81 and the second inner longitudinal bracket 82. The shielding plate assemblies of two adjacent sorting slots are arranged in mirror image, and the shielding plate assembly driving mechanism 7 is fixedly connected to the outer end of the transverse bracket on the outside of the sorting slot, thereby driving the shielding plate bracket to reciprocate up and down.

[0023] As an embodiment, the sorting trough of the utility model is two sorting troughs 21 and 22 arranged in parallel, a common feed pipe 1 arranged at the upper part of the sorting troughs 21 and 22, a common water supply pipe 9 arranged at the lower part of the sorting troughs 21 and 22, concentrate pipes 61 and 62 respectively arranged at the bottom of the sorting troughs 21 and 22, and a common overflow trough 4 arranged at the top of the sorting troughs 21 and 22, and a tailings pipe 3 is provided on one side of the overflow trough 4; the magnetic pole groups are respectively arranged on both sides and in the middle of multiple sorting troughs, each group of magnetic pole groups is provided with two layers of magnetic poles, the first group is composed of magnetic poles 51 and magnetic poles 52, each of which is a strip-shaped magnetic pole, the second group is composed of magnetic poles 53 and magnetic poles 54, and the third group is composed of magnetic poles 55 and magnetic poles 56. The two adjacent groups of magnetic pole groups are alternately arranged from top to bottom on both sides of the outside of their corresponding sorting troughs, and a tailings pipe 3 is provided on the outside of each sorting trough. There is a shielding plate assembly, which consists of a shielding plate bracket and a shielding plate. The shielding plate bracket consists of a transverse bracket 83 respectively arranged on the outside of the sorting slot and a first outer longitudinal bracket 81 respectively inserted between the outside of the sorting slot and each magnetic pole group and vertically connected to the outer end of the transverse bracket 83, a second inner longitudinal bracket 82 respectively inserted between the inner side of the sorting slot and each magnetic pole group and vertically connected to the inner end of the transverse bracket 83, and a connecting plate 84 connecting the two second inner longitudinal brackets 82. Shielding plates 10 are provided at the upper and lower ends of the first longitudinal outer bracket 81 and the second inner longitudinal bracket 82. The shielding plate assemblies of two adjacent sorting slots are arranged in mirror image. The shielding plate assembly driving mechanism 7 is fixedly connected to the outer end of the transverse bracket on the outside of the sorting slot, thereby driving the shielding plate bracket to reciprocate linearly up and down, and then driving the shielding plate that reciprocates linearly up and down to perform periodic shielding on the magnetic pole.

[0024] The shielding plate assembly driving mechanism 7 of the utility model is a linear reciprocating motor, which drives the shielding plate to perform linear reciprocating motion up and down to implement periodic shielding of the magnetic poles, so that the magnetic field in the sorting tank changes periodically. Under the action of the periodically changing magnetic force, the magnetic particles descend along a "Z" path in the sorting tank, and the non-magnetic particles rise linearly with the rising water flow under the action of the rising water flow, thereby reducing the occurrence of magnetic encapsulation and making the separation of concentrate and tailings more complete.

[0025] The width of the separation tank described in the utility model is 160 mm, it is made of non-magnetic conductive material, and the magnetic induction intensity of the magnetic pole is 1000 Gauss.

[0026] In the utility model, control valves are arranged on the feed pipe 1, the water supply pipe 9, the concentrate pipe 61 and the concentrate pipe 62 for controlling the feed, concentrate and liquid level parameters.

[0027] like Figure 1 and Figure 2As shown, the working process of the utility model is as follows:

[0028] Close the control valves of the feed pipe 1 and the concentrate pipe, open the control valve on the water supply pipe 9, and add water to the sorting tanks 21 and 22 until water overflows from the overflow tank 4. By adjusting the control valves on the feed pipe 1, the concentrate pipe and the water supply pipe 9, maintain a certain speed of rising water flow of the sorted slurry in the sorting tank; at the same time, turn on the linear motor of the shielding plate assembly drive mechanism 7, and the linear motor drives the four groups of shielding plates 10 to reciprocate up and down through the outer horizontal bracket of the shielding plate, with a movement amplitude of about 60-100mm and a period of about 5-10s.

[0029] The ore pulp to be sorted is fed into the sorting tank 21 and the sorting tank 22 through the ore feeding pipe 1. When the shielding plate 10 is separated from the magnetic pole under the driving of the shielding plate assembly driving mechanism 7, the magnetic particles in the ore pulp of the sorting tank 21 and the sorting tank 22 are attracted to the vicinity of each magnetic pole to form a magnetic agglomeration; when the shielding plate 10 coincides with the magnetic pole under the driving of the driving mechanism 7, due to the shielding effect of the shielding plate 10 on the magnetic field, the magnetic field strength in the ore pulp of the sorting tank 21 and the sorting tank 22 is greatly weakened, and the magnetic particles originally attracted to the vicinity of each magnetic pole to form a magnetic agglomeration The magnetic particles fall off from the original magnetic pole due to the weakening of the magnetic field, move downward under the action of gravity, and disperse in the slurry; when the shielding plate 10 is separated from the magnetic pole again under the drive of the driving mechanism 7, the magnetic particles in the slurry of the sorting tank 21 and the sorting tank 22 are attracted to the vicinity of the magnetic pole again by the next-level magnetic pole opposite to form a magnetic agglomeration; and the non-magnetic particles in the slurry are lighter and not affected by the magnetic field. Under the action of the rising water flow, they move upward, pass through the overflow tank 4, and are discharged from the tailings pipe 3 to become tailings. This process is repeated to complete the sorting process.

Claims

1. A multi-layer magnetic pole multi-sorting slot moving shielding plate permanent magnetic separator, comprising a plurality of sorting slots arranged in parallel, a feed pipe arranged at the top of each sorting slot, a water supply pipe arranged at the bottom of each sorting slot, a concentrate pipe arranged at the bottom of each sorting slot, and a common overflow slot arranged at the top of the sorting slot, and a tailings pipe is arranged on one side of the overflow slot, characterized in that: It also includes a magnetic pole group, a magnetic bracket, a shielding plate assembly and a shielding plate assembly driving mechanism, wherein the magnetic pole groups are respectively arranged on both sides and in the middle of a plurality of sorting slots, and the magnetic pole groups are composed of N layers of upper and lower magnetic poles, and two adjacent magnetic pole groups are respectively alternately arranged from top to bottom on both sides of the outside of the corresponding sorting slots, and the magnetic pole groups of every two adjacent sorting slots are arranged in mirror image correspondence; A shielding plate assembly is provided on the outside of each sorting slot, and the shielding plate assembly includes a shielding plate bracket and a shielding plate. The shielding plate bracket is composed of transverse brackets respectively arranged on the outside of the sorting slot and first outer longitudinal brackets respectively inserted between the outside of the sorting slot and each magnetic pole group and vertically connected to the outer end of the transverse bracket, second inner longitudinal brackets respectively inserted between the inner side of the sorting slot and each magnetic pole group and vertically connected to the inner end of the transverse bracket, and a connecting plate connecting the two second inner longitudinal brackets. Shielding plates are provided on the upper and lower ends of the first longitudinal outer bracket and the second inner longitudinal bracket. The shielding plate assemblies of two adjacent sorting slots are arranged in mirror-image correspondence. The shielding plate assembly driving mechanism is fixedly connected to the outer end of the transverse bracket on the outside of the sorting slot, thereby driving the shielding plate bracket to reciprocate up and down, and then driving the shielding plate to reciprocate up and down in a straight line to perform periodic shielding on the magnetic poles.

2. A multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator according to claim 1, characterized in that: The plurality of sorting slots are M sorting slots with an open box body at the top and a cone body at the bottom, wherein M≥1, and are made of non-magnetic material.

3. The multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator according to claim 1, characterized in that: The N layers of magnetic poles are permanent magnetic systems, wherein N≥2.

4. The multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator according to claim 1, characterized in that: The width of the separation tank is 120-200 mm; the magnetic induction intensity of the magnetic pole group is 600-2000 Gauss.

5. The multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator according to claim 1, characterized in that: The shielding plate is made of soft ferromagnetic material, electromagnetic pure iron.

6. The multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator according to claim 1, characterized in that: The magnetic system support is composed of a horizontal plate beam and M+1 magnetic pole group supports arranged vertically to the horizontal plate beam. The magnetic pole group support is provided with N layers of brackets. The M+1 magnetic pole group supports are vertically fixed on the horizontal plate beam at equal intervals.

7. The multi-layer magnetic pole multi-separation slot moving shielding plate permanent magnetic separator according to claim 1, characterized in that: Control valves are arranged on the ore feeding pipe, concentrate pipe and water supply pipe.

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