Magnetic separation apparatus for iron-bearing substances in hydrometallurgical tailings for laterite nickel ore

Abstract

A magnetic separation apparatus for iron-bearing substances in hydrometallurgical tailings for a laterite nickel ore. The magnetic separation apparatus comprises: a tube (1) which is configured to allow tailings to be poured from the top end of the tube, wherein a plurality of vertical flat holes (101) running through the tube (1) are provided in an outer side of the tube (1); a magnetic separation member (2) comprising an electromagnetic plate (21) and a sliding sleeve (22), wherein the electromagnetic plate (21) is arranged in the flat hole (101), the sliding sleeve (22) is sleeved on an outer side of the electromagnetic plate (21) and can shuttle back and forth in the flat hole (101) along the electromagnetic plate (21), and by means of the electromagnetic plate (21), iron-bearing substances are magnetically attracted to the sliding sleeve (22) in an area where the electromagnetic plate overlaps with the sliding sleeve (22); a driving member (3) which is configured to drive the sliding sleeve (22) to shuttle back and forth in the flat hole (101); and a material guide member (4) which is configured to receive the iron-bearing substances which are brought out of the tube (1) by the sliding sleeve (22) and released from magnetic attraction and fall down.

Description

A magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings Technical Field

[0001] The present invention relates to the technical field of tailings magnetic separation and recovery, in particular to a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings. Background Art

[0002] In the process of producing nickel, cobalt and manganese new energy raw materials by hydrometallurgy of laterite nickel ore, tailings are produced. The tailings contain iron-containing substances. The iron-containing substances are recovered from the obtained tailings by reduction roasting-magnetic separation.

[0003] In order to improve the magnetic separation efficiency in the magnetic separation step of tailings, the existing technology, such as Chinese Patent 202211190652.7, a magnetic separation device for recovering metals from smelting tailings, is provided with a tailings breakup component, and the tailings breakup component can cooperate with the electromagnetic selection part to fully select the magnetic metals in the tailings in the magnetic separation chamber. At the same time, the rotation of the magnetic separation disk can drive the tailings breakup component to break up the tailings, thereby improving the recovery efficiency of the magnetic metals. By breaking up the tailings and allowing them to be fully magnetically separated, the magnetic separation efficiency is improved.

[0004] For the above-mentioned existing technologies, in order to improve the recovery efficiency of tailings magnetic separation, the tailings are broken up during magnetic separation, which does have obvious effects. However, most magnetic separation equipment is either transported to the magnetic separation section by a conveyor belt for magnetic separation, or injected into a drum-type magnetic separation equipment for rolling magnetic separation. The aspects in which the efficiency of the magnetic separation line is restricted are still concentrated on the speed at which the tailings pass through the magnetic separation section and the transfer speed of the metal and tailings after magnetic separation. If it is necessary to match the continuous generation of tailings from the smelting production line and perform efficient and sufficient tailings magnetic separation, it is necessary to keep the tailings passing quickly and being effectively magnetically separated. Therefore, it is necessary to propose a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings to solve the above problems.

[0005] Summary of the Invention

[0006] In view of this, it is necessary to provide a magnetic separation device for iron-containing materials in laterite nickel ore hydrometallurgical tailings to solve the technical problem in the existing technology that the magnetic separation efficiency is still restricted by the speed at which the tailings pass through the magnetic separation part and the transfer speed of the metal and tailings after magnetic separation.

[0007] In order to achieve the above technical objectives, the technical solution of the present invention provides a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings, comprising:

[0008] A tube body, used for pouring tailings from its top, and a plurality of vertical flat holes penetrating the tube body are opened on the outside of the tube body;

[0009] A magnetic separator, comprising an electromagnetic plate and a sliding sleeve, wherein the electromagnetic plate is disposed in the flat hole, and the sliding sleeve is sleeved on the outside of the electromagnetic plate and can reciprocate along the electromagnetic plate in the flat hole, and magnetically attracts ferrous materials to the sliding sleeve in the overlapping area between the electromagnetic plate and the sliding sleeve;

[0010] A driving member, used for driving the sliding sleeve to shuttle back and forth in the flat hole; and

[0011] The material guide is used to receive the ferrous material brought out of the tube body by the sliding sleeve and separated from the magnetic attraction and falling down.

[0012] Furthermore, the flat holes are distributed on the left and right sides and the front and back sides of the tube body, and the flat holes on the front and back sides and the left and right sides are distributed up and down, and the magnetic separators located in the flat holes are distributed in a cross shape in the tube body.

[0013] Furthermore, the number of the flat holes on the front and rear sides and the left and right sides of the tube body is two.

[0014] Furthermore, the sleeve is U-shaped and is invertedly mounted on the electromagnetic plate. A guide groove is provided on the inner side of the sleeve, and a guide bar is provided on the outer side of the electromagnetic plate. The guide bar is slidably connected to the guide groove and is used to guide the sleeve to move along the direction of the electromagnetic plate.

[0015] Furthermore, a group of the magnetic separators includes a plurality of the magnetic separators that are distributed crosswise up and down, and the plurality of groups of the magnetic separators are distributed sequentially from top to bottom on the tube body.

[0016] Furthermore, the magnetic forces of the electromagnetic plates on the plurality of groups of magnetic separators decrease from top to bottom, and there is a material guide member corresponding to the bottom of each group of magnetic separators.

[0017] Furthermore, the driving member includes a first bracket, a second bracket, a driving wheel and a fixed bracket, the driving wheel is rotatably connected to the fixed bracket, the fixed bracket is installed on the outside of the tube body, the end of the driving wheel is connected to the first bracket, one end of the second bracket is hinged to the first bracket, and the other end of the second bracket is hinged to the corresponding sliding sleeve.

[0018] Furthermore, the driving member further includes a driving motor and a transmission belt. The transmission belt is arranged between two adjacent driving wheels. The transmission belt is also arranged between the output shaft of the driving motor and the adjacent driving wheels.

[0019] Furthermore, the material guiding member includes a material receiving hopper, which is arranged on the tube body and surrounds the tube body.

[0020] Furthermore, the bottom of the receiving hopper is inclined to one side, and a diversion hopper is provided at the inclined bottom.

[0021] Compared with the prior art, the present invention has the following beneficial effects: by adopting a vertical tube body, the tailings are poured in in a free-fall manner, the slide is horizontally inserted into the tube body, and the magnetic plate is suspended in the slide, the slide can move back and forth in the tube body, and always keep a part of it in the tube body, under the action of the electromagnetic plate, the iron-containing material is adsorbed on the part of the slide in the tube body, and the part of the slide that moves outside the tube body is separated from the magnetic plate area and demagnetized, and in the reciprocating movement process, the magnetically separated iron-containing material is taken out of the tube body and automatically demagnetized and separated, which can effectively and quickly magnetically separate the iron-containing material, and utilize the rapid fall of the free fall body, combined with the vertically distributed multi-segment uninterrupted transfer structure of the iron-containing material, to perform efficient magnetic separation, the magnetically separated iron-containing material is transferred from the outside of the tube body, and the tailings are transferred from the bottom of the tube body, so that the tailings pass through the magnetic separation part at a faster speed and are transferred separately, and can be fully magnetically separated, with high magnetic separation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a three-dimensional structural diagram of a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to an embodiment of the present invention;

[0023] FIG2 is a top view of the structure of a magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to an embodiment of the present invention;

[0024] FIG3 is a three-dimensional diagram of the structure of the magnetic separator according to an embodiment of the present invention;

[0025] FIG4 is a front view of the structure of a magnetic separator according to an embodiment of the present invention;

[0026] FIG5 is an exploded view of the structure of a magnetic separator according to an embodiment of the present invention;

[0027] 6 is a three-dimensional diagram of multi-layer magnetic separation of an iron-containing material magnetic separation device for laterite nickel ore hydrometallurgical tailings according to an embodiment of the present invention;

[0028] 7 is a schematic structural diagram of a multi-layer magnetic separation device for magnetic separation of iron-containing substances in laterite nickel ore hydrometallurgical tailings according to an embodiment of the present invention;

[0029] In the figure: 1, tube body; 101, flat hole; 102, enclosure;

[0030] 2. Magnetic selector; 21. Electromagnetic plate; 22. Sliding sleeve;

[0031] 3. Driving member; 31. First bracket; 32. Second bracket; 33. Driving wheel; 34. Fixed bracket; 35. Transmission belt;

[0032] 4. Material guide; 41. Material receiving hopper; 42. Diversion hopper;

[0033] 100, strong magnetic group; 200, medium magnetic group; 300, weak magnetic group. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0035] As shown in Figures 1-5, the present invention provides a magnetic separation device for iron-containing materials in laterite nickel ore hydrometallurgical tailings, including a pipe body 1, a magnetic separator 2, a driving member 3 and a material guide 4. The pipe body 1 is used to pour tailings from its top, and take advantage of the free fall of the tailings to make it naturally disperse in the fall. It has a sufficient speed to pass through the magnetic separation part and provides effective dispersion, which is conducive to magnetic separation in the pipe body 1, sufficient magnetic separation, and improved magnetic separation efficiency. The outer side of the pipe body 1 is provided with a plurality of vertical flat holes 101 passing through the pipe body 1; the magnetic separator 2 includes an electromagnetic plate 21 and a sliding sleeve 22, the electromagnetic plate 21 is arranged in the flat hole 101, and the two ends extend from the two ends of the flat hole 101 to the outside of the two sides of the pipe body 1 respectively, the sliding sleeve 22 is sleeved on the outer side of the electromagnetic plate 21, and can shuttle back and forth in the flat hole 101 along the electromagnetic plate 21, through the overlap of the electromagnetic plate 21 with the sliding sleeve 22. The area magnetically attracts the ferrous material to the sleeve 22. The sleeve 22 is located in the area inside the tube body 1 and overlaps with the electromagnetic plate 21. The electromagnetic plate 21 has a magnetic attraction force and magnetizes the ferrous material through the sleeve 22 so that it adheres to the outer surface of the sleeve 22. When the area of ​​the sleeve 22 moves from the flat hole 101 to the outside of the tube body 1 and leaves the magnetic attraction area of ​​the electromagnetic plate 21, the ferrous material previously adsorbed is automatically separated, forming magnetic separation and separation. During magnetic separation, the iron-containing substances are discharged from the outside of the tube body 1, while the tailings fall directly from the tube body 1 and are discharged from the bottom of the tube body 1, which plays a role in rapid magnetic separation and separation; the driving member 3 is used to drive the sleeve 22 to shuttle back and forth in the flat hole 101, and move the sleeve 22 back and forth from the tube body 1; the material guide 4 is used to receive the iron-containing substances that are taken out of the tube body 1 by the sleeve 22 and separated from the magnetic suction and falling, and the iron-containing substances magnetically separated are directly separated from the tailings and transferred.

[0036] It can be understood that the sleeve 22 corresponding to the flat hole 101 is also flat, and its area on the vertical plane is larger, with more magnetic attraction area, and when it leaves the magnetic attraction area of ​​the electromagnetic plate 21, the vertical outer surface is also easier to fall off the iron-containing material previously adsorbed on its surface; the driving member 3 can adopt equipment with telescopic function, such as telescopic cylinder, electric push rod and other existing equipment; the material guide 4 is mainly arranged on the outside of the tube body 1, and is used to receive the iron-containing material magnetically selected from the tube body 1 and guide and transport it; the length of the sleeve 22 always completely covers the electromagnetic plate 21 under the extension and contraction of the driving member 3.

[0037] In a certain embodiment, in order to have a more effective cutting effect and a sufficient magnetic separation effect during the free fall of the tailings from the pipe body 1, the flat holes 101 are distributed on the left and right sides and the front and back sides of the pipe body 1, and the front and back sides are distributed up and down with the flat holes 101 on the left and right sides, and the magnetic separation elements 2 located in the flat holes 101 are distributed in a cross shape in the pipe body 1, that is, the magnetic separation elements 2 are arranged horizontally and vertically from top to bottom in the pipe body 1, and the horizontal layer of magnetic separation elements 2 are all parallel horizontally, and the vertical layer of magnetic separation elements 2 are all parallel vertically. When the tailings fall, they will be cut horizontally and vertically by the sliding sleeve 22, which has the first effect of further breaking up the tailings, and the second effect of staggered distribution of the magnetic separation elements 2, so that the magnetic separation areas are dispersed and coordinated, and can more fully contact the tailings for magnetic separation.

[0038] Furthermore, in order to form a more sufficient magnetic separation and slitting and breaking up effect, the number of the flat holes 101 on the front and rear sides and the left and right sides of the tube body 1 is two. Referring to Figure 2, the magnetic separator 2 is formed in the falling channel of the tailings to form a specific well-shaped slitting and breaking up structure, so as not to cut the tube body 1 too finely to cause tailings blockage, and to have an effective slitting and breaking up effect, and its magnetic surface has four sides of the upper layer and four sides of the lower layer, which can fully contact the tailings and magnetically separate.

[0039] Furthermore, in order to provide stable guidance during the reciprocating movement of the sleeve 22, the sleeve 22 is U-shaped and is invertedly mounted on the electromagnetic plate 21, so that it can be magnetically adsorbed on both sides of the electromagnetic plate 21. A guide groove is provided on the inner side of the sleeve 22, and a guide bar is provided on the outer side of the electromagnetic plate 21. The guide bar is slidably connected to the guide groove and is used to guide the movement of the sleeve 22 along the direction of the electromagnetic plate 21. Through the cooperation of the guide bar and the guide groove, the sleeve 22 is provided with stable sliding and its moving direction is limited so that it will not move in the upper and lower positions.

[0040] It can be understood that there can be two guide bars on an electromagnetic plate 21, and the two guide bars are distributed on both sides of the electromagnetic plate 21 respectively. The guide grooves are correspondingly opened on the left and right side walls of the sliding sleeve 22. The symmetrically distributed guide structure has higher stability.

[0041] In a certain embodiment, in order to avoid magnetic separation loopholes and ensure sufficient magnetic separation, referring to Figures 6 and 7, a group of the magnetic separation elements 2 includes several magnetic separation elements 2 distributed crosswise up and down, and several groups of the magnetic separation elements 2 are distributed on the pipe body 1 from top to bottom. According to actual needs and the quality required for magnetic separation, multiple groups of magnetic separation elements 2 can be set as needed for magnetic separation, and they are in a staggered distribution manner to fully contact and magnetically separate the tailings.

[0042] It can be understood that in this mode, the magnetic separators 2 are distributed up and down, and the staggered angle between the upper and lower magnetic separators 2 is not necessarily ninety degrees, and can be adaptively changed, but the single-layer magnetic separators 2 are all arranged in parallel to avoid interference in expansion and contraction.

[0043] Furthermore, since there are iron-containing substances of different particle sizes in the tailings, if screening is required, after magnetic separation, an additional process is required and the corresponding screening equipment is cooperated to perform screening operations on the iron-containing substances magnetically separated, which affects the efficiency of the entire production line. Therefore, in order to screen the iron-containing substances by size during the magnetic separation process, the efficiency of the entire tailings recovery process can undoubtedly be greatly improved. In order to achieve the above effect, specifically, the magnetic force of the electromagnetic plates 21 on several groups of the magnetic separators 2 decreases from top to bottom, and each group of the magnetic separators 2 corresponds to a material guide 4 below, so that each group of magnetic separators 2 adsorbs iron-containing substances of different particle sizes with different magnetic forces and guides them out from the corresponding material guide 4 respectively. During the magnetic separation process, preliminary screening of the iron-containing substances is performed, which saves subsequent screening links and improves the efficiency of the recovery production line. In addition, multiple groups of magnetic separators 2 distributed from top to bottom can also achieve the effect of sufficient magnetic separation.

[0044] Preferably, the number of groups of magnetic selectors 2 is three, which are a strong magnetic group 100, a medium magnetic group 200 and a weak magnetic group 300 from top to bottom.

[0045] In addition, in order to prevent tailings from being ejected from the flat hole 101 , a baffle 102 is provided on the inner side of the tube body 1 for guiding the tailings close to the inner wall into the central area of ​​the tube body 1 .

[0046] In a certain embodiment, in order to correspond to the synchronous driving of multiple magnetic selectors 2, the driving member 3 includes a first bracket 31, a second bracket 32, a driving wheel 33 and a fixed frame 34. The driving wheel 33 is rotatably connected to the fixed frame 34, and the fixed frame 34 is installed on the outside of the tube body 1. The end of the driving wheel 33 is connected to the first bracket 31, one end of the second bracket 32 ​​is hinged to the first bracket 31, and the other end of the second bracket 32 ​​is hinged to the corresponding sliding sleeve 22. The rotation of the driving wheel 33 drives the first bracket 31 to rotate, and the second bracket 32 ​​is linked to push and pull the sliding sleeve 22, forming an effect of the sliding sleeve 22 moving linearly along the electromagnetic plate 21 in the flat hole 101.

[0047] Furthermore, the driving member 3 also includes a driving motor and a transmission belt 35. The transmission belt 35 is arranged between the two adjacent driving wheels 33. The transmission belt 35 is also arranged between the output shaft of the driving motor and the adjacent driving wheel 33. The driving wheels 33 of the upper and lower magnetic separators 2 are transmitted through the transmission belt 35, and all the magnetic separators 2 on a single side can be driven by one driving motor, saving costs.

[0048] In one embodiment, in order to collect and transport the iron-containing materials magnetically separated, the material guide 4 includes a receiving hopper 41, which is arranged on the tube body 1 and surrounds the tube body 1, thereby collecting the iron-containing materials magnetically separated and fallen from all sides.

[0049] Furthermore, the bottom of the receiving hopper 41 is tilted to one side, and a guide hopper 42 is provided at the tilted bottom. The iron-containing material is slid toward the guide hopper 42 along the tilt of the bottom, and the outlet of the guide hopper 42 is connected to the conveyor belt for transfer.

[0050] The specific working process of the present invention is as follows: the tailings are injected from the top of the pipe body 1, and the drive is driven by the drive belt 35. The drive wheel 33 drives the first bracket 31 and the second bracket 32 ​​to push and pull the sleeve 22 back and forth in a straight line, so that it moves back and forth from the pipe body 1 along the flat hole 101, and the iron-containing material adsorbed to the surface of the sleeve 22 by the electromagnetic plate 21 is taken out, and detached from the outside of the pipe body 1, collected by the receiving hopper 41, and transported to the conveyor belt with the guide hopper 42, while the tailings are directly discharged from the bottom end of the pipe body 1 and transported by another conveyor belt; if there are multiple groups of magnetic separators 2 with different magnetic attraction strengths, the multiple corresponding receiving hoppers 41 are respectively guided to the guide hoppers 42 thereon, and the iron-containing materials of the magnetic separation and screening particle size are separately transported by the corresponding conveyor belts, and the size screening of the iron-containing materials is carried out at the same time as the magnetic separation.

[0051] The entire workflow is complete, and all contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A magnetic separation device for iron-containing substances in laterite nickel ore hydrometallurgical tailings, It is characterized in that include: A tube body, used for pouring tailings from its top, and a plurality of vertical flat holes penetrating the tube body are opened on the outside of the tube body; A magnetic separator, the magnetic separator comprising an electromagnetic plate and a sliding sleeve, the electromagnetic plate being arranged in the flat hole, the sliding sleeve being sleeved on the outside of the electromagnetic plate and being able to shuttle back and forth in the flat hole along the electromagnetic plate, and the ferrous material being magnetically attracted to the sliding sleeve by the electromagnetic plate in the overlapping area with the sliding sleeve; A driving member, used for driving the sliding sleeve to shuttle back and forth in the flat hole; and The material guide is used to receive the iron-containing material that is brought out of the tube body by the sliding sleeve and falls away from the magnetic attraction.

2. The laterite nickel ore hydrometallurgical tailings iron-containing material magnetic separation equipment according to claim 1, It is characterized in that The flat holes are distributed on the left and right sides and the front and back sides of the tube body, and the flat holes on the front and back sides and the left and right sides are distributed up and down, and the magnetic selection parts located in the flat holes are distributed in a cross shape in the tube body.

3. The laterite nickel ore hydrometallurgical tailings iron-containing material magnetic separation equipment according to claim 2, It is characterized in that The number of the flat holes on the front and rear sides and the left and right sides of the tube body is two.

4. The magnetic separation equipment for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to claim 3, It is characterized in that The sliding sleeve is U-shaped and is invertedly mounted on the electromagnetic plate. A guide groove is provided on the inner side of the sliding sleeve, and a guide bar is provided on the outer side of the electromagnetic plate. The guide bar is slidably connected to the guide groove and is used to guide the sliding sleeve to move along the direction of the electromagnetic plate.

5. The laterite nickel ore hydrometallurgical tailings iron-containing material magnetic separation equipment according to claim 1, It is characterized in that A group of the magnetic separators includes a plurality of the magnetic separators that are distributed crosswise up and down, and the plurality of groups of the magnetic separators are distributed sequentially from top to bottom on the tube body.

6. The magnetic separation equipment for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to claim 5, It is characterized in that The magnetic force of the electromagnetic plates on the plurality of groups of magnetic selectors decreases from top to bottom, and there is a material guide member corresponding to the bottom of each group of magnetic selectors.

7. The magnetic separation equipment for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to claim 1, It is characterized in that The driving member includes a first bracket, a second bracket, a driving wheel and a fixed bracket, the driving wheel is rotatably connected to the fixed bracket, the fixed bracket is installed on the outside of the tube body, the end of the driving wheel is connected to the first bracket, one end of the second bracket is hinged to the first bracket, and the other end of the second bracket is hinged to the corresponding sliding sleeve.

8. The magnetic separation equipment for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to claim 7, It is characterized in that The driving member further comprises a driving motor and a transmission belt. The transmission belt is arranged between two adjacent driving wheels. The transmission belt is also arranged between the output shaft of the driving motor and the adjacent driving wheels.

9. The laterite nickel ore hydrometallurgical tailings iron-containing material magnetic separation equipment according to claim 1, It is characterized in that The material guiding member comprises a material receiving hopper, which is arranged on the tube body and surrounds the tube body.

10. The magnetic separation equipment for iron-containing substances in laterite nickel ore hydrometallurgical tailings according to claim 9, It is characterized in that The bottom of the receiving hopper is inclined to one side, and a guide hopper is arranged at the inclined bottom.

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