Magnetic separation equipment for resource recycling of waste metal and surface waste

Abstract

The utility model provides magnetic separation equipment for recycling waste metal and surface wastes, and materials to be subjected to magnetic separation can be solid materials such as waste metal chippings and can also be slurry-shaped materials generated in the resource utilization process of pickling slurry; materials are fed into the magnetic separation main body through the spiral feeder, the magnetic plates are subjected to magnetic separation, the lifting rotating shaft is matched to drive the plate brush to lift and rotate to push away and flatly lay the materials on the magnetic plates, each layer of magnetic plate fully adsorbs metal particles, the plate brush pushes impurities and redundant materials into the lower layer of magnetic plate, and the impurities are finally discharged from the discharge port after layer-by-layer magnetic separation. And then the magnetism of the magnetic plate is eliminated, the metal particles fall off from the magnetic plate, the residual metal particles are swept to the discharging opening through the plate brush, and therefore collection of all the metal particles and cleaning of the interior of the magnetic separator are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal surface waste treatment field especially, relates to a kind of magnetic separation equipment for waste metal and surface waste resource recovery. BACKGROUND

[0002] Waste metal recovery, not only includes metal products and swarf, but also includes sludge and other hazardous wastes generated in the process of surface treatment and processing of stainless steel enterprises and electroplating enterprises.Nickel, chromium and iron are contained in stainless steel pickling sludge, and nickel, copper, zinc and iron and other metal elements are contained in electroplating sludge.If such hazardous waste is not treated harmlessly, it will cause serious harm to the environment.On the other hand, nickel, chromium, copper and iron and other metal elements in sludge have high industrial value.If they are not recycled, it means a huge waste of resources, so harmless disposal of sludge and recycling of valuable metal elements in sludge to achieve comprehensive utilization of sludge resources is not only the need of environmental protection, but also the need of social sustainable development to realize circular economy.After treatment of such hazardous waste, iron particles, copper particles, nickel plates, sodium sulfate and concrete bricks can be obtained, which can be fully reused to achieve maximum economic benefits.Whether it is directly crushing and cleaning waste metal products for recycling or recycling and treating stainless steel pickling sludge, a magnetic separator is needed to magnetically separate the metal therein to facilitate recycling and treatment.

[0003] Different operation procedures produce different magnetic separation raw materials, for example, the impurity separation procedure after crushing waste metal in waste metal recovery, which produces metal scraps mixed with impurities, and these solid scrap materials need to be poured into the magnetic separator for magnetic separation.For example, the recycled iron particle recovery procedure in the process of stainless steel pickling sludge resource utilization, which needs to crush the solidified brick containing iron into micron-sized powder by wet crushing, and then adjust the slurry to a water content of 50% for magnetic separation to obtain recycled iron particles.In this example, the slurry material is put into the magnetic separation equipment.Therefore, a magnetic separation equipment is needed to magnetically separate various forms of materials while improving the efficiency of magnetic separation. SUMMARY

[0004] The utility model discloses a kind of magnetic separation equipment for waste metal and surface waste resource recovery to solve the problem that magnetic separation equipment needs to adapt to solid and slurry and other different state materials and complete efficient magnetic separation in the process of waste metal and waste metal sludge resource utilization, and is presented.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of magnetic separation equipment for scrap metal and surface waste resource recycling, including screw feeder and magnetic separation main body, the material outlet of the screw feeder is connected with the magnetic separation inlet of the magnetic separation main body;The magnetic separation main body includes shell, magnetic plate, lifting rotating shaft, driving device and plate brush, the shell is cylindrical hollow shell, the lower portion of the shell is equipped with discharge port, multiple magnetic plates are arranged and installed in the inside of the shell along the extension direction of the axis of the shell, the magnetic plate includes sector plate body and mounting hole, the lifting rotating shaft is installed in the axis position of the shell and passes through the mounting hole of all magnetic plates, the end of the lifting rotating shaft is equipped with driving device, the driving device is used to drive the lifting rotating shaft to rotate around its own axis or to go up and down, the side wall of the lifting rotating shaft is also equipped with multiple plate brushes, the plate brush corresponds with the magnetic plate one by one and is installed above the magnetic plate.

[0007] Preferably, the magnetic plate is a prototype flat net shape and has the same diameter as the inner diameter of the shell.

[0008] Preferably, the peripheral portion of the magnetic plate is fixedly installed on the inner side wall of the shell, and a sector gap is formed between the sector plate body of the magnetic plate and the shell.

[0009] Preferably, the sector gaps formed between all the magnetic plates and the shell are staggered.

[0010] Preferably, the projections of the sector gaps formed between two adjacent magnetic plates and the shell on a plane perpendicular to the lifting rotating shaft do not completely coincide.

[0011] Preferably, the magnetic plate is horizontally arranged.

[0012] Preferably, the sector central angle of the sector plate body of the magnetic plate ranges from 270° to 300°.

[0013] Preferably, the driving device is a combination of one or more of a motor, an air cylinder, and a screw rod.

[0014] Preferably, one end of the plate brush is installed on the lifting rotating shaft, the other end of the plate brush extends to the inner side wall of the shell, and the plate brush is installed parallel to the upper surface of the magnetic plate; when the lifting rotating shaft goes up and down, the plate brush moves away from the magnetic plate upward or the plate brush moves close to and contacts the magnetic plate downward; when the bottom of the plate brush contacts the magnetic plate, the lifting rotating shaft rotates to drive the plate brush to rotate on the magnetic plate.

[0015] Preferably, the discharge port is arranged at a position corresponding to the gap between the bottom of the shell and the lowermost magnetic plate and the shell.

[0016] Compared with the prior art, the beneficial effects of the utility model are that: the spiral feeder is used as the conveying mechanism, and both the metal scrap and the slurry-shaped material to be magnetically separated can be uniformly and continuously fed into the interior of the magnetic separator, thereby effectively avoiding uneven deposition of the slurry and being beneficial to improving the magnetic separation efficiency and the magnetic separation effect. After the material to be magnetically separated enters the magnetic main body and falls on the magnetic plate, the lifting shaft is lifted to the appropriate height to make the bottom of the plate brush contact the surface of the magnetic plate, the lifting shaft is rotated to drive the plate brush to rotate, the material on the magnetic plate is evenly laid, the metal particles such as iron particles in the material are adsorbed and screened, the impurities fall, and the excess material is pushed to the gap by the plate brush and falls to the next layer of magnetic plate to be adsorbed and screened, the impurities are discharged from the bottom discharge port after layer-by-layer magnetic separation, the magnetism of the magnetic plate is removed after cleaning, all the metal particles are brushed off from the magnetic plate by the plate brush and are collected from the discharge port, the utility model is convenient to use and can simultaneously perform magnetic separation on solid and slurry materials, the magnetic separation efficiency is high, and the magnetic separation effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Fig. 1 It is a structural schematic view of a magnetic separation equipment for recycling of waste metals and surface waste resources.

[0019] Fig. 2 It is a structural schematic view of a spiral feeder.

[0020] Fig. 3 It is a structural schematic view of a magnetic plate and a plate brush.

[0021] Among them, the spiral feeder 1, the material outlet 11, the magnetic main body 2, the magnetic separation inlet 201, the discharge port 202, the outer shell 1, the magnetic plate 22, the lifting shaft 23, the driving device 24, the plate brush 25. DETAILED DESCRIPTION

[0022] In order to further understand the purpose, structure, features and functions of the utility model, the embodiments are described in detail as follows.

[0023] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0024] Please refer to Figs. 1-3 A kind of magnetic separation equipment for scrap metal and surface waste resource recycling, including screw feeder 1 and magnetic separation main body 2, the material outlet 11 of screw feeder 1 is connected with the magnetic separation inlet 201 of magnetic separation main body 2;Magnetic separation main body 2 includes outer shell 21, magnetic plate 22, lifting shaft 23, drive device 24 and plate brush 25, outer shell 21 is cylindrical hollow shell, lower portion of outer shell 21 is equipped with discharge port 202, multiple magnetic plates 22 are arranged and installed in the interior of outer shell 21 along the extension direction of the axis of outer shell 21, magnetic plate 22 includes sector plate body and mounting hole, lifting shaft 23 is installed at the axis position of outer shell 21 and passes through the mounting hole of all magnetic plates 22, the end of lifting shaft 23 is equipped with drive device 24, drive device 24 is used to drive lifting shaft 23 to rotate or go up and down around its own axis, the side wall of lifting shaft 23 is also equipped with multiple plate brushes 25, plate brush 25 corresponds with magnetic plate 22 one by one and is installed above magnetic plate 22.

[0025] The utility model can be used for the magnetic separation of metal chips after scrap metal crushing, and also can be used in the magnetic separation step of recycling and regenerating iron particles in the process of stainless steel pickling sludge resource utilization;Specifically, after acid pickling sludge is pretreated by acid immersion, iron, copper and chromium are removed, manganese dioxide is added to the mixture of filter residue and mixed uniformly, and then the mixture is pressed into square mud residue blocks by a forming machine, and after solidification by tunnel kiln firing, the solidified brick is broken into particles with a size of 40-50 μm by wet crushing method, and then water is added to adjust the slurry to a water content of 50%, and then the slurry is subjected to magnetic separation treatment to obtain regenerated iron particles;The magnetic separation equipment of the utility model can also be used to treat such slurried materials and select metal particles therefrom.

[0026] In actual use, whether it is solid metal scrap material or slurry material in the process of resource utilization of pickling sludge, it is transported by the screw feeder 1. The screw feeder 1 can continuously and uniformly discharge the material from the material outlet 11 whether it is transporting metal scrap or slurry containing metal particles. The slurry containing metal particles is transported by the screw feeder 1, continuously stirred during the transportation process, which can effectively prevent the slurry from depositing, so that the slurry material can also be uniformly fed into the magnetic separation main body 2 and obtain better magnetic separation effect. The material enters from the top end of the magnetic separation main body 2 and falls on the magnetic plate 22. The magnetic plate 22 can be an electromagnet which has magnetism during the magnetic separation work. The metal particles in the material are adsorbed on the magnetic plate 22. The lifting shaft 23 drives the brush 25 to lift to an appropriate height, so that the bottom of the brush 25 can lightly sweep the magnetic plate 22. The lifting shaft 23 drives the brush 25 to rotate relative to the magnetic plate 22, pushing the material on the magnetic plate 22 to be flat and full on the magnetic plate 22, so as to obtain higher magnetic separation efficiency and better magnetic separation effect. The excess material and impurities are pushed and swept to the gap and fall on the lower magnetic plate 22. In this way, magnetic separation is performed layer by layer until the impurities are discharged from the bottom discharge port 202. If it is necessary to collect metal particles, the magnetic property of the magnetic plate 22 is eliminated after the impurities are discharged. In this way, the metal particles fall from the magnetic plate 22, or the metal particles are swept layer by layer with the aid of the brush 25 until they are all discharged from the bottom discharge port 202. In addition, if it is necessary to clean the magnetic separation equipment of the utility model, clean water is added from the screw feeder 1 and flows into the magnetic separation main body 2 for cleaning.

[0027] In some embodiments, the magnetic plate 22 is a prototype flat net shape and has the same diameter as the inner diameter of the outer shell 21. The magnetic plate 22 is a net structure. In a preferred embodiment, the magnetic plate 22 is still a flat plate, and the surface of the plate is full of mesh holes. In this way, during magnetic separation, non-metal impurities fall from the mesh holes, and the brush 25 is cleaned, which is conducive to reducing the content of impurities in the metal particles after magnetic separation. Compared with the woven mesh structure with a concave-convex surface, the flat plate magnetic plate 22 is more suitable for cleaning with the brush 25.

[0028] In some embodiments, the peripheral part of the magnetic plate 22 is fixedly installed on the inner side wall of the outer shell 21, and a fan-shaped gap is formed between the fan-shaped plate body of the magnetic plate 22 and the outer shell 21. The magnetic plate 22 can be fixed in the outer shell 21 by various connection methods such as welding, clamping connection, bolt connection, etc. The edge of the magnetic plate 22 is directly connected with the inner wall of the outer shell 21, avoiding the flow gap to cause the material to fall from the gap without being subjected to magnetic separation and directly falling into the bottom and being discharged.

[0029] In some embodiments, all the sector gaps formed between the magnetic plates 22 and the outer shell 21 are arranged in a staggered manner, so that the material falling from each layer of magnetic plates 22 can be received by the next layer of magnetic plates 22 and subjected to magnetic separation, thereby avoiding some material falling directly from the top to the bottom discharge port 202 of the magnetic separation main body 2 without being subjected to magnetic separation, which can damage the magnetic separation effect. Further, the projections of the sector gaps formed between the adjacent two magnetic plates 22 and the outer shell 21 on the plane perpendicular to the lifting shaft 23 do not completely coincide, so as to obtain the maximum magnetic separation area and the maximum magnetic separation efficiency.

[0030] In some embodiments, the magnetic plates 22 are arranged horizontally, so that the brush 25 can always be in uniform contact with the magnetic plates 22 when the brush 25 rotates, thereby obtaining a good material flattening effect and impurity sweeping effect.

[0031] In some embodiments, the sector central angle of the sector plate body of the magnetic plates 22 ranges from 270° to 300°, so as to retain a larger area of the magnetic plates 22 and obtain a good magnetic separation efficiency, while leaving a sufficient gap area in each layer to ensure that the material can quickly fall from the gap to the next layer when the material is more, thereby avoiding the material accumulation in the upper layer. More preferably, the sector central angle of the sector plate body of the magnetic plates 22 located in the upper layer is greater than the sector central angle of the sector plate body of the magnetic plates 22 located in the lower layer.

[0032] In some embodiments, the driving device 24 is a combination of one or more of the motor, the air cylinder, and the screw rod. The lifting shaft 23 needs two kinds of movements, including the lifting movement and the rotating movement around its own axis, which can be driven by using any of the current driving methods.

[0033] In some embodiments, one end of the brush 25 is installed on the lifting shaft 23, and the other end of the brush 25 extends to the inner side wall of the outer shell 21, and the brush 25 is installed parallel to the upper surface of the magnetic plates 22; when the lifting shaft 23 lifts, the brush 25 moves away from the magnetic plates 22 upward or the brush 25 moves close to and contacts the magnetic plates 22 downward; when the bottom of the brush 25 contacts the magnetic plates 22, the lifting shaft 23 rotates to drive the brush 25 to rotate on the magnetic plates 22.

[0034] In some embodiments, the discharge port 202 is arranged at the position corresponding to the gap between the bottom of the outer shell 21 and the lowermost magnetic plate 22 and the outer shell 21; so as to facilitate the impurities or metal particles to directly fall from the lowermost magnetic plate 22 into the discharge port 202 and be discharged out of the magnetic separation main body 2 to be collected. Preferably, the area of the discharge port 202 should be greater than the area of the lowermost gap.

[0035] In summary, the magnetic separation equipment can simultaneously carry out magnetic separation on solid materials such as waste metal scraps and slurry materials generated in the resource utilization process of pickling slurry, can be applied to different process workshops of waste metal resource recycling, has high magnetic separation efficiency and is easy to use.

[0036] The utility model has been described by the above related embodiments, however the above example is only for implementing the utility model. It must be pointed out that the disclosed embodiment does not limit the scope of the utility model. On the contrary, changes and decorations made without departing from the spirit and scope of the utility model are within the scope of the patent protection of the utility model.

Claims

1. A magnetic separation device for scrap metal and surface waste resource recycling, characterized by: The magnetic separation device comprises a spiral feeder and a magnetic separation body, the material outlet of the spiral feeder is connected with the magnetic separation inlet of the magnetic separation body; the magnetic separation body comprises an outer shell, magnetic plates, a lifting shaft, a driving device, and a brush, the outer shell is a cylindrical hollow shell, the lower part of the outer shell is provided with a discharge outlet, a plurality of magnetic plates are arranged and installed in the outer shell in the extending direction of the axis of the outer shell, the magnetic plate comprises a sector plate body and a mounting hole, the lifting shaft is installed at the axis position of the outer shell and penetrates through the mounting holes of all the magnetic plates, the end of the lifting shaft is provided with a driving device, the driving device is used to drive the lifting shaft to rotate or lift up and down around its own axis, the side wall of the lifting shaft is further provided with a plurality of brushes, the brush corresponds to the magnetic plate one by one and is installed above the magnetic plate.

2. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 1, characterized by: The magnetic plate is a prototype flat net shape and the diameter is the same as the inner diameter of the outer shell.

3. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 2, characterized by: The peripheral part of the magnetic plate is fixedly installed on the inner side wall of the outer shell, and a sector gap is formed between the sector plate body of the magnetic plate and the outer shell.

4. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 3, characterized by: All the sector gaps formed between the magnetic plates and the outer shell are staggered.

5. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 4, characterized in that: The projections of the sector gaps formed between the adjacent two magnetic plates and the outer shell on the plane perpendicular to the lifting shaft do not completely coincide.

6. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 1, characterized in that: The magnetic plate is horizontally arranged.

7. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 1, characterized in that: The sector central angle of the sector plate body of the magnetic plate ranges from 270° to 300°.

8. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 1, characterized by: The driving device is a combination of one or more of a motor, a cylinder, and a screw rod.

9. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 1, characterized in that: One end of the brush is installed on the lifting shaft, the other end of the brush extends to the inner side wall of the outer shell, and the brush is installed parallel to the upper surface of the magnetic plate; when the lifting shaft lifts up, the brush moves away from the magnetic plate, or when the lifting shaft lowers, the brush moves close to and contacts the magnetic plate; when the bottom of the brush contacts the magnetic plate, the lifting shaft rotates to drive the brush to rotate on the magnetic plate.

10. The magnetic separation device for scrap metal and surface waste resource recycling according to claim 1, characterized by: The discharge outlet is arranged at the position corresponding to the gap between the bottom of the outer shell and the lowermost magnetic plate and the outer shell.

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