A periodic magnetic separator

Abstract

The present application relates to a kind of periodic magnetic separator, bag machine magnetic system and pipeline system, and the pipeline system includes vertical cylinder, and the magnetic system includes upper magnetic pole head and lower magnetic pole head being spaced apart along up and down, and upper magnetic medium and lower magnetic medium are arranged between upper magnetic pole head and lower magnetic pole head, and the periodic magnetic separator further includes separation cylinder, and the separation cylinder includes separation cylinder bottom plate between upper magnetic medium and lower magnetic medium, separation cylinder bottom plate upper end is fixed with separation cylinder cylinder body, and upper magnetic medium is located inside separation cylinder cylinder body, and separation cylinder bottom plate lower end is connected with separation cylinder discharge cylinder, and lower end passes through lower magnetic medium and communicates with the upper side of lower magnetic pole head, separation cylinder bottom plate is provided with bottom plate discharge hole, and bottom plate discharge hole is connected with feed cylinder, and the upper end of feed cylinder is passed out by the upper side of upper magnetic medium and upper magnetic pole head.The present application provides a kind of periodic magnetic separator capable of improving magnetic separation throughput.

Description

Technical Field

[0001] This invention relates to the field of mineral processing technology, and in particular to a periodic magnetic separator. Background Technology

[0002] Magnetic separators are among the most widely used and versatile machines in industry. They are suitable for separating substances with magnetic differences and can be applied in industries such as mining, chemicals, and food, with particularly wide applications in the mining sector.

[0003] High-gradient magnetic separation is a physical beneficiation method for separating weakly magnetic minerals, characterized by high separation efficiency, low production cost, and low pollution. Periodic high-gradient magnetic separators have only gained widespread industrial application in the last decade, thanks to advancements in automatic control technology. They offer advantages such as uniform background magnetic induction intensity distribution, static separation via magnetic media, and a long path for the slurry to flow through the magnetic media. They also exhibit good iron removal performance in non-metallic minerals, making them widely used for iron removal in non-metallic ores.

[0004] Existing periodic magnetic separators, such as the "Pulsating Periodic Magnetic Separator" disclosed in Chinese Patent CN113414005A, include a frame, a piping system, and a magnetic system. The magnetic system includes an upper magnetic pole head, a lower magnetic pole head, and a magnetic medium disposed between the upper and lower magnetic pole heads. The magnetic system also includes a coil disposed around the magnetic medium. The upper and lower magnetic pole heads are provided with pole head channels, and the magnetic medium has magnetic medium channels.

[0005] In operation, the coil is energized to create a magnetic field. This magnetic medium is magnetic. The molten ore passes sequentially from top to bottom through the upper magnetic pole head, the magnetic medium, and the lower magnetic pole head. The magnetic substances in the ore are adsorbed onto the magnetic medium. When the magnetic medium is saturated, the coil is de-energized, stopping the supply of ore. Clean water is then used to wash away the magnetic substances on the magnetic medium from top to bottom. Adsorption magnetic separation and washing are performed cyclically, hence the name periodic magnetic separator. The problem with existing periodic magnetic separators is that only one set of magnetic medium can perform magnetic separation in each cycle, resulting in a relatively small processing capacity. Summary of the Invention

[0006] The purpose of this invention is to provide a periodic magnetic separator that can improve the magnetic separation throughput.

[0007] To solve the above-mentioned technical problems, the technical solution of a periodic magnetic separator in this invention is as follows: A periodic magnetic separator includes a frame with a magnetic system and a piping system. The piping system includes a vertical cylinder. The magnetic system includes an upper magnetic pole head and a lower magnetic pole head disposed inside the vertical cylinder. An upper magnetic medium and a lower magnetic medium are disposed between the upper and lower magnetic pole heads. The magnetic system also includes a coil disposed around the upper cylinder. Both the upper and lower magnetic pole heads have magnetic pole head channels for the corresponding mineral liquid to pass through in the vertical direction. The periodic magnetic separator also includes a separator cylinder, which includes components located between the upper and lower magnetic media. The bottom plate of the separator cylinder has a separator cylinder body fixed at the upper end. The upper magnetic medium is located inside the separator cylinder body. The lower end of the separator cylinder bottom plate is connected to a separator cylinder discharge cylinder whose lower end passes through the lower magnetic medium and communicates with the upper side of the lower magnetic pole head. The separator cylinder bottom plate is provided with a bottom plate discharge hole that communicates with the upper side of the lower magnetic medium. The bottom plate discharge hole is connected to a feed cylinder whose upper end passes through the upper magnetic medium and the upper side of the upper magnetic pole head. The upper end of the vertical cylinder body is provided with a first feed channel that communicates with the feed cylinder and a second feed channel that communicates with the upper side of the upper magnetic pole head.

[0008] Furthermore, the bottom plate of the separator cylinder has a conical structure that is larger at the top and smaller at the bottom, and the discharge cylinder of the separator cylinder is located at the lowest position in the center of the bottom plate of the separator cylinder.

[0009] Furthermore, there is one magnetic pole head channel on the lower magnetic pole head, which is located at the center of the lower magnetic pole head, and the discharge port of the separator cylinder is located directly above the magnetic pole head channel of the lower magnetic pole head.

[0010] Furthermore, a conical material collection groove with a larger top and a smaller bottom is provided on the upper end surface of the lower magnetic pole head, and the magnetic pole head channel on the lower magnetic pole head is located at the lowest position of the conical material collection groove.

[0011] Furthermore, there are multiple magnetic pole head channels on the upper magnetic pole head, and these channels are evenly distributed on the upper magnetic pole head.

[0012] Furthermore, a side magnetic pole plate is provided on the outer side of the coil, an upper magnetic pole plate is provided on the upper side of the coil, and a lower magnetic pole plate is provided on the lower side of the coil. The vertical cylinder includes an upper cylinder and a lower cylinder. A first feeding channel and a second feeding channel are provided on the upper cylinder. A cylinder outlet is provided at the bottom of the lower cylinder. The upper magnetic pole head is fixed on the lower inner wall of the upper cylinder. The upper end of the lower cylinder is sleeved around the lower periphery of the upper cylinder. A vibrating plate is provided at the upper end of the upper cylinder. A vibrating motor is connected to the vibrating plate. A vertically arranged spring is provided between the vibrating plate and the upper magnetic pole plate.

[0013] Furthermore, multiple reinforcing ribs are provided at both the upper and lower ends of the bottom of the separator cylinder, spaced apart along the circumference.

[0014] Furthermore, the first feeding channel is located on the side wall of the upper cylinder, and the second feeding channel is located on the top of the upper cylinder. A main feeding pipe is provided at the second feeding channel, and branch feeding pipes connected to the upper end of each feeding cylinder are connected to the main feeding pipe.

[0015] The beneficial effects of this invention are as follows: The key innovation of this invention lies in dividing the sorting area into a first sorting area and a second sorting area arranged vertically by a separator. The upper magnetic pole head and the upper magnetic medium are located in the first sorting area, and the lower magnetic pole head and the lower magnetic medium are located in the second sorting area. In operation, when the coil is energized, the upper and lower magnetic media become magnetic in the magnetic field. A portion of the material passes through the first feed channel, then flows through the upper magnetic pole head to the upper magnetic medium, is attracted by the upper magnetic medium, and is discharged through the separator's discharge cylinder. Another portion of the material passes through the second feed channel, is attracted by the lower magnetic medium, and is then discharged through the magnetic pole head channel on the lower magnetic pole head. This achieves simultaneous mineral processing of two streams of ore, increasing the throughput of the periodic magnetic separator. Attached Figure Description

[0016] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding portions, wherein: Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 yes Figure 1 Top view; Figure 3 yes Figure 1 The left view; Figure 4 yes Figure 1 Sectional view along axis AA; Figure 5 yes Figure 1 A three-dimensional image; Figure 6 yes Figure 1 Schematic diagram of the middle partition cylinder; Figure 7 yes Figure 6 Top view; Figure 8 yes Figure 6 BB-direction sectional view; Figure 9 yes Figure 6 A three-dimensional image; 1. Upper magnetic pole head; 2. Lower magnetic pole head; 3. Upper magnetic pole plate; 4. Lower magnetic pole plate; 5. Side magnetic pole plate; 6. Frame; 7. Coil; 8. Lower cylinder; 9. Vibration motor; 10. Spring; 11. Upper cylinder; 12. Separator cylinder; 13. Upper magnetic medium; 14. Lower magnetic medium; 15. First feed pipe; 16. Second feed pipe; 17. Main feed pipe; 18. Branch feed pipe; 19. Feed cylinder; 20. Lower magnetic pole head channel; 21. Conical material gathering trough; 22. Separator cylinder discharge cylinder; 23. Separator cylinder body; 24. Separator cylinder bottom plate; 25. Bottom plate reinforcing rib; 26. Bottom plate discharge hole; 27. Discharge pipe. Detailed Implementation

[0017] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0018] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0019] An embodiment of a periodic magnetic separator in this invention is as follows: Figures 1-9 As shown: The system includes a frame 6, on which a magnetic system and a piping system are installed. The piping system includes a vertical cylinder, which consists of an upper cylinder 11 and a lower cylinder 8. The upper end of the lower cylinder 8 is fitted onto the lower end of the upper cylinder 11, and the lower cylinder 8 and the upper cylinder 11 are connected by bolts. A discharge port is provided at the bottom of the lower cylinder 8, and a discharge pipe 27 is connected to the discharge port.

[0020] The magnetic system includes an upper magnetic pole head 1 and a lower magnetic pole head 2 spaced apart vertically. An upper magnetic medium 13 and a lower magnetic medium 14 are arranged vertically between the upper magnetic pole head 1 and the lower magnetic pole head 2. The upper magnetic pole head 1 is fixed to the inner wall of the upper cylinder, and the lower magnetic pole head 2, the upper magnetic medium 13 and the lower magnetic medium 14 are fixed to the inner wall of the lower cylinder. The magnetic system also includes a coil 7 located on the periphery of the upper cylinder. The coil is an excitation coil made of copper wire (or aluminum wire). When a direct current is applied, a constant magnetic field can be generated. The magnetic field strength can be continuously adjusted by adjusting the current. Both the upper magnetic pole head 1 and the lower magnetic pole head 2 are provided with magnetic pole head channels for the corresponding mineral liquid to pass through in the vertical direction. The magnetic pole head channel on the upper magnetic pole head is called the upper magnetic pole head channel, and the magnetic pole head channel on the lower magnetic pole head is called the lower magnetic pole head channel 20. In this embodiment, there are multiple upper magnetic pole head channels, which are evenly spaced. There is one lower magnetic pole head channel, which is located at the center of the lower magnetic pole head.

[0021] The periodic magnetic separator also includes a separator cylinder, which includes a separator cylinder bottom plate 24 located between the upper magnetic pole medium and the lower magnetic pole medium. The separator cylinder bottom plate 24 has a conical structure that is larger at the top and smaller at the bottom. A separator cylinder body 23 is fixed to the outer periphery of the upper end of the separator cylinder bottom plate, and the upper magnetic pole medium 13 is located inside the separator cylinder body. A separator cylinder discharge cylinder 22 is connected at the lowest position of the bottom center of the separator cylinder bottom plate, with its lower end passing through the lower magnetic pole medium and communicating with the upper side of the lower magnetic pole head. The discharge port of the separator cylinder discharge cylinder 22 is located directly above the lower magnetic pole head channel 20.

[0022] The bottom plate of the separator cylinder has four bottom plate discharge holes 26 that communicate with the upper side of the lower magnetic medium. These four bottom plate discharge holes 26 are spaced apart circumferentially. Each bottom plate discharge hole 26 is connected to a feed cylinder 19 that extends from the upper side of the upper magnetic medium and the upper magnetic pole head. Each feed cylinder 19 is vertically arranged. The upper cylinder body has a first feed channel 15 communicating with the feed cylinder and a second feed channel 16 communicating with the upper side of the upper magnetic pole head. Multiple bottom plate reinforcing ribs 25 are spaced apart circumferentially at both the upper and lower ends of the bottom of the separator cylinder. The bottom plate reinforcing ribs 25 are located between two adjacent bottom plate discharge holes in the circumferential direction.

[0023] In this embodiment, the first feeding channel is located on the side wall of the upper cylinder, and the second feeding channel is located on the top of the upper cylinder. A main feeding pipe 17 is provided at the second feeding channel, and branch feeding pipes 18 connected to the upper end of each feeding cylinder are connected to the main feeding pipe.

[0024] A conical material collection groove 21 with a larger upper part and a smaller lower part is provided on the upper end surface of the lower magnetic pole head, and the lower magnetic pole head channel is located at the lowest position of the conical material collection groove.

[0025] A side magnetic pole plate 5 is provided on the outer side of the coil 7, an upper magnetic pole plate 3 is provided on the upper side of the coil 7, and a lower magnetic pole plate 4 is provided on the lower side of the coil. A vibrating plate is provided at the upper end of the upper cylinder 11, and a vibrating motor 9 is mounted on the vibrating plate. A vertically arranged spring 10 is provided between the bottom of the vibrating plate and the upper magnetic pole plate 3. The upper cylinder has a support edge that supports the upper side of the vibrating plate, and the upper and lower cylinders are bolted together between the vibrating plate and the support edge. The axis of the bolt extends in the vertical direction.

[0026] The first feed pipe and the second feed pipe are used for feeding ore and washing, respectively. Therefore, the first feed pipe can also be called the first feed and washing pipe, and the second feed pipe can also be called the second feed and washing pipe. During operation, I. Feeding Stage. The purpose of the feeding stage is to remove iron from the non-metallic ore to obtain a high-quality concentrate. For example... Figure 1 As shown, when DC current is applied to coil 7, a constant magnetic field is generated in the sorting zone formed between the upper magnetic pole head 1 and the lower magnetic pole head 2 within the closed magnetic system and between the inner coil of coil 7. The sorting zone is divided into an independent first sorting zone and a second sorting zone by the separator 12, thus separating the magnetic sorting zone into two independent sorting zones. The upper part is the first sorting zone, and the lower part is the second sorting zone. The upper magnetic medium and the upper magnetic pole head are installed in the first sorting zone, and the lower magnetic medium and the lower magnetic pole head are installed in the second sorting zone. The magnetic medium is made of sheet-like mesh, rod-like, or steel wool-like magnetic conductive material. The magnetic medium material is existing technology, and the slurry can pass through the pores of the magnetic medium material from top to bottom.

[0027] The magnetic medium is magnetized in a magnetic field, generating a magnetic force. The first stream of slurry enters the upper magnetic medium of the first sorting zone through the upper magnetic pole head hole or gap from the upper feed pipe 15. Due to the magnetic force, the magnetic mineral particles in the slurry are adsorbed onto the surface of the upper magnetic medium. The concentrate after magnetic separation is discharged from the separator cylinder discharge cylinder and the lower magnetic pole head channel into the lower collection hopper of the lower cylinder, and then discharged through the discharge pipe 27. Simultaneously, the second stream of slurry enters the lower magnetic medium of the second sorting zone through the upper second feed pipe 16 and the separator cylinder feed cylinder. The concentrate after magnetic separation is discharged from the lower magnetic pole head channel into the lower collection hopper of the lower cylinder, and then discharged through the discharge pipe 27. When feeding stops, the remaining slurry in the sorting space is returned to the original ore pool through the discharge pipe 27.

[0028] II. Iron Removal Stage. The purpose of the iron removal stage is to clean the ferrous materials adsorbed on the magnetic medium. At this stage, the DC power input to coil 7 is disconnected, and the vibration motor 9 is turned on. Simultaneously, flushing water is fed from the first feed pipe 15 into the first sorting zone to flush the upper magnetic medium 13, and from the second feed pipe 16 into the second sorting zone to flush the lower magnetic medium 14. When the vibration motor 9 is working, the lower cylinder 8 and the lower magnetic pole head 2 vibrate due to the vibration force of the motor 9. The separator cylinder 12, upper magnetic medium 13, lower magnetic medium 14, and water inside the upper cylinder 11 also vibrate. Due to the different vibration frequencies, the magnetic medium and the water in the lower cylinder 8 generate relative motion, thus the water flow continuously washes the magnetic medium, cleaning the magnetic minerals adsorbed on it. To achieve a good cleaning effect, the magnetic medium should be immersed in water for vibration cleaning. Water used to clean the upper magnetic medium 13 is discharged from the lower pipe of the separator 12 into the collection hopper of the lower cylinder 8. Water used to clean the lower magnetic medium 14 is discharged directly into the collection hopper of the lower cylinder 8 and then discharged from the discharge pipe 27. The upper and lower magnetic media are discharged independently without interference, resulting in better rinsing of the magnetic media and less clogging.

[0029] In other embodiments of the present invention, the number of lower magnetic pole head channels may also be multiple.

[0030] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the devices or elements involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0032] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A periodic magnetic separator, comprising a frame, on which a magnetic system and a piping system are mounted, characterized in that: The piping system includes a vertical cylinder. The magnetic system includes an upper magnetic pole head and a lower magnetic pole head disposed inside the vertical cylinder. An upper magnetic medium and a lower magnetic medium are disposed between the upper and lower magnetic pole heads. The magnetic system also includes a coil disposed around the upper cylinder. Both the upper and lower magnetic pole heads are provided with magnetic pole head channels for the corresponding mineral liquid to pass through in the vertical direction. The periodic magnetic separator also includes a separator cylinder, which includes a separator cylinder bottom plate located between the upper and lower magnetic media. The upper end of the separator cylinder bottom plate... A fixed separator cylinder body is provided, with an upper magnetic medium located inside the separator cylinder body. The lower end of the separator cylinder bottom plate is connected to a separator cylinder discharge cylinder whose lower end passes through the lower magnetic medium and communicates with the upper side of the lower magnetic pole head. The separator cylinder bottom plate is provided with a bottom plate discharge hole that communicates with the upper side of the lower magnetic medium. A feed cylinder whose upper end passes through the upper magnetic medium and the upper side of the upper magnetic pole head is connected to the bottom plate discharge hole. The upper end of the vertical cylinder body is provided with a first feed channel that communicates with the feed cylinder and a second feed channel that communicates with the upper side of the upper magnetic pole head.

2. The periodic magnetic separator according to claim 1, characterized in that: The bottom plate of the separator cylinder has a conical structure that is wider at the top and narrower at the bottom, and the discharge cylinder of the separator cylinder is located at the lowest position in the center of the bottom plate of the separator cylinder.

3. The periodic magnetic separator according to claim 2, characterized in that: There is one magnetic pole head channel on the lower magnetic pole head, which is located at the center of the lower magnetic pole head. The discharge port of the separator cylinder is located directly above the magnetic pole head channel of the lower magnetic pole head.

4. The periodic magnetic separator according to claim 3, characterized in that: A conical material collection groove with a larger top and a smaller bottom is provided on the upper end surface of the lower magnetic pole head, and the magnetic pole head channel on the lower magnetic pole head is located at the lowest position of the conical material collection groove.

5. The periodic magnetic separator according to claim 1, characterized in that: There are multiple magnetic pole head channels on the upper magnetic pole head, and the magnetic pole head channels on the upper magnetic pole head are evenly distributed on the upper magnetic pole head.

6. The periodic magnetic separator according to claim 1, characterized in that: A side magnetic pole plate is provided on the outer side of the coil, an upper magnetic pole plate is provided on the upper side of the coil, and a lower magnetic pole plate is provided on the lower side of the coil. The vertical cylinder includes an upper cylinder and a lower cylinder. A first feeding channel and a second feeding channel are provided on the upper cylinder. A cylinder outlet is provided at the bottom of the lower cylinder. The upper magnetic pole head is fixed on the lower inner wall of the upper cylinder. The upper end of the lower cylinder is sleeved on the lower periphery of the upper cylinder. A vibrating plate is provided at the upper end of the upper cylinder. A vibrating motor is connected to the vibrating plate. A vertically arranged spring is provided between the vibrating plate and the upper magnetic pole plate.

7. The periodic magnetic separator according to claim 2, characterized in that: Multiple reinforcing ribs are provided at both the top and bottom ends of the bottom of the separator cylinder, spaced apart along the circumference.

8. The periodic magnetic separator according to claim 6, characterized in that: The first feeding channel is located on the side wall of the upper cylinder, and the second feeding channel is located on the top of the upper cylinder. A main feeding pipe is provided at the second feeding channel, and branch feeding pipes connected to the upper end of each feeding cylinder are connected to the main feeding pipe.

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