Multi-layer magnetic pole and multi-separation groove moving magnetic pole permanent magnetic field magnetic separator

Abstract

The utility model relates to a multi-layer magnetic pole multi-separation groove moving magnetic pole permanent magnetic field magnetic separator, which is characterized in that the separation grooves are M separation grooves which are arranged in parallel at equal intervals, the upper part of each separation groove is an open box body, the lower part of each separation groove is a quadrangular pyramid body, and a tailing overflow groove is fixedly connected to the periphery of the upper part of each open box body; the bottom of the quadrangular pyramid is connected with a concentrate discharging pipe, the ore feeding pipe is arranged on the upper middle portion of the open box body, and the water supplementing pipe is arranged on the lower portion of the open box body; a magnetic pole group assembly is arranged on the outer side of each separation groove and comprises a magnetic system, a magnetic system bracket and a driving mechanism. The utility model has the advantages of simple structure, low cost, less investment, doubled magnetic energy utilization rate, high space utilization rate, and less magnetic wrapping phenomenon due to the fact that the concentrate descends along the Z-shaped path.

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 magnetic pole permanent magnetic field 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 and multi-sorting slot moving magnetic pole permanent magnetic separator with simple structure and low cost. The equipment can make magnetic mineral particles fall along a "Z"-shaped line under the action of an intermittent magnetic field by periodically changing the distance between the staggered magnetic poles on both sides of the sorting slot and the side wall of the sorting slot, while non-magnetic particles rise along a straight line under the action of an ascending water flow, thereby reducing the occurrence of magnetic wrapping, making the separation of concentrate and tailings more complete and improving the sorting effect.

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

[0006] The utility model discloses a dynamic shielding plate permanent magnetic separator, comprising a sorting trough, a feed pipe, a water supply pipe, a tailings overflow trough, a tailings pipe and a concentrate discharge pipe, characterized in that the sorting trough is M sorting troughs arranged in parallel with equal intervals, the upper part of each sorting trough is an open box body, and the lower part is a quadrangular pyramid body, the tailings overflow trough is fixedly connected to the periphery of the upper part of each open box body, the concentrate discharge pipe is connected to the bottom of the quadrangular pyramid body, the feed pipe is arranged in the upper middle part of the open box body, and the water supply pipe is arranged in the lower part of the open box body; a magnetic pole group assembly is arranged on the outer side of each sorting trough, and the magnetic pole group assembly includes a magnetic system, a magnetic system bracket and a driving mechanism,

[0007] The magnetic system support is composed of a horizontal frame beam arranged on the outside of each sorting slot and M+1 longitudinal pole supports inserted on both sides of each sorting slot and vertically fixedly connected to the horizontal plate beam. Pole brackets are respectively provided at the upper and lower ends of each longitudinal pole bracket. The magnetic system is a strip-shaped permanent magnetic pole group; the strip-shaped permanent magnetic pole group is composed of an upper permanent magnetic pole and a lower permanent magnetic pole, which are respectively fixed on the pole brackets at the upper and lower ends of the longitudinal magnetic pole bracket. The longitudinal magnetic pole bracket on the outside of each sorting slot and the longitudinal magnetic pole bracket on the inside are staggered up and down, so that the two adjacent strip-shaped permanent magnetic poles on the left and right are staggered. The driving mechanism is arranged on a side of the outermost sorting slot and is fixedly connected to the longitudinal magnetic pole bracket on the outer side of the sorting slot.

[0008] Preferably, the M+1 longitudinal magnetic pole supports are composed of longitudinal magnetic pole supports I and III arranged on the outsides of sorting slots I and II, and longitudinal magnetic pole support II inserted between two adjacent sorting slots.

[0009] Preferably, the driving mechanism is composed of a linear driving motor, a horizontal slide and a sliding rod that reciprocates in the horizontal slide, the slide is arranged on an operating platform, the sliding rod is fixedly connected to the magnetic bracket in parallel, and the linear driving motor is connected to one end of the sliding rod.

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

[0011] Preferably, control valves are provided on both the ore feeding pipe and the water supply pipe.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] 1) The structure is very simple, the production cost is low, and the investment is small;

[0014] 2) Adopting permanent magnet system, low energy consumption;

[0015] 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;

[0016] 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

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 for Figure 1 Schematic top view of . DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, a dynamic shielding plate permanent magnetic separator of the utility model comprises a sorting trough, a feeding pipe 1, a water supply pipe 9, a tailings overflow trough 4, a tailings pipe 3 and a concentrate discharge pipe, characterized in that the sorting trough is M sorting troughs arranged in parallel with equal intervals, and the sorting troughs of this embodiment are two sorting troughs Ⅰ21 and sorting troughs Ⅱ22 arranged in parallel with equal intervals, the upper parts of the sorting troughs Ⅰ21 and sorting troughs Ⅱ22 are open boxes, and the lower parts are quadrangular pyramids, the tailings overflow trough 4 is fixedly connected to the upper periphery of the open boxes of the M sorting troughs, and the concentrate discharge pipe is connected to the bottom of the quadrangular pyramid, the feeding pipe 1 is arranged in the upper middle part of the open box, and the water supply pipe 9 is arranged in the lower part of the open box; water is supplied to two adjacent sorting troughs respectively, and a magnetic pole group assembly is arranged on the outer side of each sorting trough, and the magnetic pole group assembly includes a magnetic system, a magnetic system bracket and a driving mechanism,

[0021] The magnetic system support is composed of a horizontal frame beam 81 arranged on the outside of each sorting slot and M+1 longitudinal pole supports inserted on both sides of each sorting slot and vertically fixedly connected to the horizontal plate beam 81. Pole brackets are respectively provided at the upper and lower ends of each longitudinal pole bracket. The magnetic system is a strip-shaped permanent magnetic pole group; the strip-shaped permanent magnetic pole group is composed of an upper permanent magnetic pole and a lower permanent magnetic pole, which are respectively fixed on the pole brackets at the upper and lower ends of the longitudinal magnetic pole bracket. The longitudinal magnetic pole bracket on the outside of each sorting slot and the longitudinal magnetic pole bracket on the inside are staggered up and down, so that the two adjacent strip-shaped permanent magnetic poles on the left and right are staggered. The driving mechanism 7 is arranged on a side of the outermost sorting slot and is fixedly connected to the longitudinal magnetic pole bracket on the outer side of the sorting slot.

[0022] The M+1 longitudinal magnetic pole supports are composed of longitudinal magnetic pole supports I821 and II822 arranged on the outer sides of the sorting slot I21 and the sorting slot II22, and longitudinal magnetic pole supports III823 inserted between two adjacent sorting slots.

[0023] As an example, Figure 1 As shown, the sorting troughs described in the utility model are two sorting troughs Ⅰ21 and sorting troughs Ⅱ22 arranged in parallel with equal intervals. The upper parts of the sorting troughs Ⅰ21 and sorting troughs Ⅱ22 are open boxes with a width of 180 mm; the lower part is a quadrangular pyramid, and a common tailings overflow trough 4 is fixedly connected to the periphery of the upper part of the open box. The bottoms of the quadrangular pyramids of the two sorting troughs Ⅰ21 and sorting troughs Ⅱ22 are respectively connected to a concentrate discharge pipe 61 and a concentrate discharge pipe 62, and control valves are provided on the concentrate discharge pipe 61 and the concentrate discharge pipe 62. The common feeding pipe 1 is arranged in the upper middle part of the open box, and is respectively used to feed two adjacent sorting troughs, and a control valve is provided on the feeding pipe 1; the common water supply pipe 9 is arranged in the lower part of the open box, and is respectively used to supply water to two adjacent sorting troughs, and a control valve is also provided on the water supply pipe.

[0024] The strip-shaped permanent magnetic pole group of the present embodiment is three groups, namely, strip-shaped permanent magnetic pole I, strip-shaped permanent magnetic pole II and strip-shaped permanent magnetic pole III, wherein the strip-shaped permanent magnetic pole I includes an upper layer of permanent magnetic pole I 51 and a lower layer of permanent magnetic pole I 52, the strip-shaped permanent magnetic pole III includes an upper layer of permanent magnetic pole III 53 and a lower layer of permanent magnetic pole III 54, and the strip-shaped permanent magnetic pole II includes an upper layer of permanent magnetic pole II 55 and a lower layer of permanent magnetic pole II 56; the upper layer of the strip-shaped permanent magnetic pole I on the left side of the sorting slots I 21 and II 22 Permanent magnetic pole Ⅰ51 and lower permanent magnetic pole 52Ⅰ are positioned at the top, upper permanent magnetic pole Ⅱ55 and lower permanent magnetic pole Ⅱ56 of strip-shaped permanent magnetic pole II on the left side of sorting slot Ⅱ22 are arranged at the same height as strip-shaped permanent magnetic pole Ⅰ, upper permanent magnetic pole Ⅲ53 and lower permanent magnetic pole Ⅲ54 of strip-shaped permanent magnetic pole III shared by the two middle sorting slots are arranged lower than the strip-shaped permanent magnetic pole Ⅰ and strip-shaped permanent magnetic pole Ⅱ on both sides, so that the strip-shaped permanent magnetic pole groups corresponding to both sides of the two sorting slots are staggered from top to bottom.

[0025] Under normal working conditions of the utility model, the ore feeding, water supplementation, tailings overflow and concentrate discharge in the sorting tank 21 are in a balanced state, the rising water flow velocity in the sorting tank 21 is v, and the driving mechanism drives the magnetic system brackets on the inner and outer sides of the two sorting tanks Ⅰ21 and the sorting tank Ⅱ22 to make left and right reciprocating linear motions at a frequency of f. When the magnetic system bracket moves to the left, the longitudinal magnetic pole bracket Ⅰ821 on the outer side of the sorting tank Ⅰ21 and the longitudinal magnetic pole bracket Ⅲ823 between the two sorting tanks are close to the right outer walls of the sorting tank Ⅰ21 and the sorting tank Ⅱ22 respectively, and the longitudinal magnetic pole bracket Ⅲ823 between the two sorting tanks is close to the right outer walls of the sorting tank Ⅰ21 and the sorting tank Ⅱ22 respectively. Bracket II 822 leaves the sorting tank II 22 to the left. On the contrary, when the magnetic bracket moves to the right, the longitudinal magnetic pole bracket II 822 of the sorting tank I 21 and the longitudinal magnetic pole bracket III 823 between the two sorting tanks are close to the left outer wall of the sorting tank I 21 and the sorting tank II 22 respectively. The longitudinal magnetic pole bracket I 821 can leave the sorting tank I 21, thereby driving each strip-shaped permanent magnetic pole to periodically approach or leave the left and right outer walls of the sorting tank I 21 and the sorting tank II 22. This cycle is repeated to sort magnetic particles, non-magnetic particles and weak magnetic particles. In the sorting process, the magnetic particles are acted upon by magnetic force, the weak magnetic particles are acted upon by weak magnetic force, and the non-magnetic particles are not acted upon by magnetic force. The sorting process mainly explains the different movement trajectories of magnetic particles and weak magnetic or non-magnetic particles in the magnetic slurry in the magnetic separator of the utility model.

[0026] The following is an explanation by taking the separation process of the slurry in the separation tank I 21 as an example.

[0027] 1) The upper permanent magnetic poles Ⅰ51 and the lower permanent magnetic poles Ⅰ52 of the strip-shaped permanent magnetic poles Ⅰ on both sides of the sorting slot Ⅰ21 move back and forth in a straight line, and after a process of approaching and leaving, a cycle is completed, and a sorting process is realized. In the first half of the sorting process, the strip-shaped permanent magnetic poles Ⅰ and Ⅲ move toward the right outer wall of the sorting slot Ⅰ21 and the sorting slot Ⅱ22, and the strip-shaped permanent magnetic poles Ⅱ leave the left outer wall of the sorting slot Ⅱ22; in the second half of the sorting process, the strip-shaped permanent magnetic poles Ⅰ leave the right outer wall of the sorting slot Ⅰ21 and move outward, the strip-shaped permanent magnetic poles Ⅲ move toward the left wall of the sorting slot Ⅰ21, and the strip-shaped permanent magnetic poles Ⅱ move toward the right outer wall of the sorting slot Ⅱ22, so that two adjacent sorting slots share the middle strip-shaped permanent magnetic poles Ⅲ, and the magnetic energy utilization rate is doubled.

[0028] 2) Movement trajectories of magnetic particles, non-magnetic particles and weakly magnetic particles in sorting tank Ⅰ21

[0029] First, the magnetic slurry is fed from the feed pipe 1 into the middle and upper space of the separation tank I 21 to start separation. The specific process is as follows:

[0030] 2.1 Movement trajectory of magnetic particles

[0031] 2.1.1 The first half of the sorting process:

[0032] In the sorting tank Ⅰ21, the coarse magnetic particles whose own gravity is greater than the force of the rising water flow move downward, gradually enter the magnetic force range of the lower permanent magnetic pole Ⅰ52, and are adsorbed to the position where the lower permanent magnetic pole Ⅰ52 is located, forming a magnetic agglomeration; the fine magnetic particles whose own gravity is less than the force of the rising water flow move upward, gradually enter the magnetic force range of the upper permanent magnetic pole Ⅰ51, and are adsorbed to the position where the upper permanent magnetic pole Ⅰ51 is located, forming a magnetic agglomeration;

[0033] 2.1.2 The second half of the sorting process:

[0034] The magnetic force on the coarse magnetic particles gradually decreases until it disappears, and the coarse magnetic particles fall off from the position where the lower permanent magnetic pole Ⅰ52 of the strip-shaped permanent magnetic pole Ⅰ is located. During the downward movement, they gradually enter the magnetic force range of the lower permanent magnetic pole Ⅱ54 of the strip-shaped permanent magnetic pole Ⅱ, and are adsorbed to the position where the lower permanent magnetic pole Ⅱ54 is located, forming a magnetic agglomeration again; the magnetic force on the fine magnetic particles gradually decreases until it disappears, and the fine magnetic particles fall off from the position where the upper permanent magnetic pole Ⅰ51 is located. The fine magnetic particles form magnetic chains due to the agglomeration effect. The magnetic chains overcome the power of the rising water flow and move downward, gradually entering the magnetic force range of the upper permanent magnetic pole II 53, and are adsorbed to the position of the upper permanent magnetic pole II 53, forming magnetic agglomeration again; such a cyclical reciprocating movement attracts the magnetic particles in the sorting tank I 21 to move downward from the right wall to the left wall, and from the left wall to the right wall, from top to bottom along a "Z"-shaped path, and finally discharged through the concentrate discharge pipe 6 to become a magnetic particle concentrate.

[0035] 2.2 Movement trajectory of non-magnetic particles

[0036] Non-magnetic particles are not affected by magnetic force, and their specific gravity is significantly smaller than that of magnetic particles. Fine-grained non-magnetic particles smaller than a certain size are not able to overcome the rising water flow by their own gravity, and overflow from the tailings overflow trough 3 with the rising water flow to become tailings. Coarse-grained non-magnetic particles larger than a certain size can overcome the rising water flow by their own gravity, and move downward under the action of their gravity, are discharged through the concentrate discharge pipe 6, and are mixed into the magnetic particle concentrate.

[0037] 2.3 Movement trajectory of weakly magnetic particles

[0038] The weak magnetic particles are subjected to weak magnetic force, among which the movement trajectory of fine-grained lean intergrowths is similar to that of fine-grained non-magnetic particles, and most of them overflow from the tailings overflow trough 3 with the rising water flow to become tailings; the movement trajectory of coarse-grained lean intergrowths and a part of fine-grained lean intergrowths is similar to that of coarse-grained non-magnetic particles, and they are mixed into the magnetic particle concentrate; the movement trajectory of most rich intergrowths is similar to that of magnetic particles, and they move downward from the left wall to the right wall and from the right wall to the left wall in the sorting tank Ⅰ21, along a "Z"-shaped path from top to bottom, and are finally discharged through the concentrate discharge pipe 6 to become magnetic particle concentrate.

[0039] The slurry sorting process in the sorting tank II 22 is the same as that in the sorting tank I 21.

[0040] The width of each sorting slot of the utility model is 120-200 mm; the magnetic induction intensity of the magnetic system is 600-2000 Gauss.

Claims

1. A multi-layer magnetic pole multi-sorting slot moving magnetic pole permanent magnetic field magnetic separator, comprising a sorting slot, a feed pipe, a water supply pipe, a tailings overflow slot, a tailings pipe and a concentrate discharge pipe, characterized in that: The sorting troughs are M sorting troughs arranged in parallel with equal intervals. The upper part of each sorting trough is an open box body, and the lower part is a quadrangular pyramid body. The tailings overflow trough is fixedly connected to the periphery of the upper part of each open box body, and the concentrate discharge pipe is connected to the bottom of the quadrangular pyramid body. The feed pipe is arranged in the upper middle part of the open box body, and the water supply pipe is arranged in the lower part of the open box body. A magnetic pole group assembly is arranged on the outer side of each sorting trough, and the magnetic pole group assembly includes a magnetic system, a magnetic system bracket and a driving mechanism. The magnetic system support is composed of a horizontal frame beam arranged on the outside of each sorting slot and M+1 longitudinal pole supports inserted on both sides of each sorting slot and vertically fixedly connected to the horizontal plate beam. Pole brackets are respectively provided at the upper and lower ends of each longitudinal pole bracket. The magnetic system is a strip-shaped permanent magnetic pole group; the strip-shaped permanent magnetic pole group is composed of an upper permanent magnetic pole and a lower permanent magnetic pole, which are respectively fixed on the pole brackets at the upper and lower ends of the longitudinal magnetic pole bracket. The longitudinal magnetic pole bracket on the outside of each sorting slot and the longitudinal magnetic pole bracket on the inside are staggered up and down, so that the two adjacent strip-shaped permanent magnetic poles on the left and right are staggered. The driving mechanism is arranged on a side of the outermost sorting slot and is fixedly connected to the longitudinal magnetic pole bracket on the outer side of the sorting slot.

2. A multi-layer magnetic pole multi-separation slot moving magnetic pole permanent magnetic field magnetic separator according to claim 1, characterized in that: The sorting slots are two sorting slots I and II which are arranged in parallel with equal intervals.

3. The multi-layer magnetic pole multi-separation slot moving magnetic pole permanent magnetic field magnetic separator according to claim 1, characterized in that: The M+1 longitudinal magnetic pole supports are composed of longitudinal magnetic pole support I and longitudinal magnetic pole support III arranged on the outer sides of sorting slots I and II, and longitudinal magnetic pole support II inserted between two adjacent sorting slots.

4. The multi-layer magnetic pole multi-separation slot moving magnetic pole permanent magnetic field 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 system is 600-2000 Gauss.

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

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