Spiral chute for laterite nickel ore beneficiation

Abstract

The present application discloses a spiral chute for laterite nickel ore beneficiation, comprising: a spiral chute body (1), a material receiving structure (2), and a material guide structure (3). A material channel (22) of the material receiving structure (2) corresponds to a material discharge port of the spiral chute body (1). The material guide structure (3) comprises a plurality of groups of material guide members (31) arranged in parallel in the material channel (22). The plurality of groups of material guide members (31) all extend along the material flow direction, so as to divide the material channel (22) into a plurality of material guide areas (301). One end of the material guide structure close to a discharge end of the material channel (22) forms a fixed end fixedly connected to the material receiving structure (2), and the other end forms a movable end. The movable end is rotatably connected to the fixed end, so as to adjust the feeding width of each material guide area (301) by means of the rotation of the movable end around the fixed end. The present application enables accurate distribution of each grade of ore slurry, improving the accuracy and quality of ore slurry sorting.

Description

A spiral chute for processing laterite nickel ore TECHNICAL FIELD

[0001] The present application relates to the technical field of laterite nickel ore processing, in particular to a spiral chute for processing laterite nickel ore. BACKGROUND

[0002] Laterite nickel ore is a loose clay-like oxide aggregate containing nickel, iron, magnesium, cobalt, silicon, aluminum and other elements formed by long-term weathering, leaching, impregnation and alteration of nickel olivine-based rocks in tropical or subtropical regions. The iron element in the laterite nickel ore is in +3 valence state due to severe oxidation, which makes the overall appearance of the laterite nickel ore red-brown, hence the name laterite nickel ore. In the wet metallurgy of laterite nickel ore, spiral chutes are often used to separate chromium ore from the ore slurry, thereby reducing the chromium content in the ore slurry. The existing spiral chute is fixed and does not move. When the material is added from the feed hopper at the top of the spiral chute, the material slides down along the chute surface by gravity, thereby generating a centrifugal force. Different materials have different specific gravities, and the centrifugal forces generated are also different. Finally, the concentrate, middlings and tailings are collected from the three discharge outlets arranged from the inside to the outside at the bottom of the spiral chute.

[0003] Chinese patent CN206853885U discloses a spiral chute, which comprises a rack and a receiving tank. The lower part of the rack is fixedly installed with the receiving tank by bolts. A motor speed reducer is installed on the rack below the receiving tank by bolt connection. The output shaft of the motor speed reducer is connected with the lower end of the main shaft through a shaft coupling. The main shaft passes through the center of the receiving tank. The upper end of the main shaft is installed in a bearing seat, which is fixedly installed on the rack by bolt connection. The main shaft is installed with a chute connecting plate by bolt connection. The chute connecting plate is installed with a spiral chute by bolt connection. The spiral chute is integrally cast with a cleaning water tank, a porous water spraying plate and a spiral chute surface from the inside to the outside. The bottom of the spiral chute is installed with a concentrate discharge outlet, a middlings discharge outlet and a tailings discharge outlet by bolt connection. A water inlet hopper and a feed hopper are installed at the top of the spiral chute by bolt connection. During the operation of the equipment, the spiral chute rotates in a circular manner, and the concentrate discharge outlet, the middlings discharge outlet and the tailings discharge outlet installed at the bottom of the spiral chute are always directed to the concentrate receiving tank, the middlings receiving tank and the tailings receiving tank in the receiving tank, respectively, to discharge the selected materials.

[0004] When the ore pulp flows along the slope of the spiral chute at a certain speed, the different mineral particles are separated due to the different gravity, centrifugal force and friction force, and the separation process of the ore particles in the spiral chute generally goes through three stages. The first stage is the stratification of the particle group, the heavy minerals sink into the lower layer of the liquid flow at a high speed, and the light minerals float in the upper layer of the liquid flow at a slow speed. The second stage is that the light and heavy minerals expand along the transverse direction on the basis of the first stage, the heavy minerals gradually move to the inner edge along the converging spiral line to form the concentrate, and the light minerals gradually move to the outer edge along the expanding spiral line to form the tailings. However, the ore pulp is also affected by the water flow and the concentration of the mineral matter during the separation process, and the ore flow formed by the concentrate, middlings and tailings will deviate during the stratification of the ore pulp, resulting in poor separation accuracy and quality of the ore pulp.

[0005] SUMMARY

[0006] The present application aims to overcome the above technical deficiencies and provide a spiral chute for bauxite nickel ore beneficiation, which solves the technical problem of poor separation accuracy and quality of the ore pulp in the prior art due to the deviation of the ore flow formed by the water flow and the concentration of the mineral matter during the separation process.

[0007] To achieve the above technical purpose, the present application adopts the following technical scheme:

[0008] The present application provides a spiral chute for bauxite nickel ore beneficiation, which comprises a spiral chute body, a material receiving structure and a material guiding structure. The material receiving structure is connected to the discharge port of the spiral chute body. The material guiding structure comprises a plurality of groups of material guiding members arranged side by side in the material slot. Each group of material guiding members extends along the material flow direction to divide the material slot into a plurality of material guiding areas. One end of each material guiding area near the discharge end of the material slot forms a fixed end connected to the material receiving structure, and the other end forms a movable end connected to the fixed end. The width of each material guiding area can be adjusted by rotating the movable end around the fixed end.

[0009] In some embodiments, the material receiving structure comprises a material receiving frame, which is inclined and has a material slot extending through both ends of the material receiving frame. The material receiving frame is connected to the discharge port of the spiral chute body.

[0010] In some embodiments, the material guiding members are provided in two groups. Each group of material guiding members comprises a fixed plate at the fixed end and a movable material guiding plate at the movable end. The fixed plate is fixedly connected to the material receiving structure, and the movable material guiding plate is rotatably connected to the fixed plate at one end of the fixed plate near the discharge port of the spiral chute body.

[0011] In some embodiments, the spiral chute for processing laterite nickel ore further comprises a flow splitting structure, which is arranged at the feeding end of the material slot of the receiving structure and is located at the upstream position of the material guiding structure. The flow splitting structure comprises a plurality of baffles arranged in sequence along the width direction of the material slot, so as to form a plurality of material guiding channels for feeding the receiving structure. The end surface of each baffle close to the material guiding structure is arranged as an arc surface, and each arc surface is matched with the rotation track of two movable material guiding plates respectively. The number of baffles is 8-14.

[0012] In some embodiments, the spiral chute for processing laterite nickel ore further comprises an identification structure, which comprises a plurality of detection modules arranged along the width direction of the material slot. The detection modules are used to monitor the color of the ore pulp, so that the control module connected with the detection modules can determine the type of the ore pulp according to the color of the ore pulp. The type of the ore pulp includes concentrate, middling and tailings. The number of detection modules is equal to the number of material guiding channels, and each detection module corresponds to each material guiding channel.

[0013] In some embodiments, the material guiding structure further comprises a driving member, which is connected with the detection modules of the identification structure through the control module. Based on the color of the ore pulp in each material guiding channel detected by each detection module, the control module can determine whether the ore pulp in each material guiding channel belongs to concentrate, middling or tailings, and control the driving member to drive the movable material guiding plate to swing at a set angle, so as to guide the ore pulp in a plurality of material guiding channels into the corresponding material guiding area. The driving member comprises a motor, a speed reduction gear set and a driving swing rod. The motor is arranged in a machine box, the driving shaft of the motor is connected with the driving wheel of the speed reduction gear set, the driving swing rod is fixedly arranged at one side of the driven gear of the speed reduction gear set, a slide column is arranged on the fixed plate, and a swing rod groove is formed in the driving swing rod along the length direction of the driving swing rod and is slidably connected with the slide column.

[0014] In some embodiments, each baffle close to the movable material guiding plate is provided with a contact sensor, and the contact sensor is connected with the control module. When the control module determines that the ore pulp in each material guiding channel belongs to concentrate, middling or tailings based on the color of the ore pulp in each material guiding channel detected by each detection module, the control module can trigger the corresponding two contact sensors to be turned on. When the movable material guiding plate rotates to touch the contact sensor, the contact sensor sends a stop signal to the control module, so that the control module controls the driving member to stop.

[0015] In some embodiments, the spiral chute for beneficiation of laterite nickel ore further comprises a discharging structure arranged at the discharging end of the chute, which comprises a discharging frame and two discharging plates arranged in the discharging frame, the discharging frame is divided into an internal part, and the internal part is sequentially formed with a concentrate chute, a middling chute and a tailing chute from inside to outside, and the bottom of the discharging frame is provided with a concentrate discharging pipe, a middling discharging pipe and a tailing discharging pipe which are respectively communicated with the concentrate chute, the middling chute and the tailing chute.

[0016] Compared with the prior art, the spiral chute for beneficiation of laterite nickel ore provided by the application can separate the chute of the receiving structure into multiple guide areas through the guide members arranged in parallel in the chute, each guide member has a fixed end and a movable end, the fixed end is arranged at a position close to the discharging end to form a fixed discharging port, and the movable end is arranged at a position away from the discharging end, the movable end can rotate around the fixed end, when the stratification of the ore slurry deviates, the feeding width of each guide area can be adjusted through the rotation of the movable end around the fixed end, the accurate distribution of each grade of ore slurry can be realized, and the separation precision and quality of the ore slurry can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] FIG. 1 is a schematic diagram of the overall three-dimensional structure of the spiral chute for beneficiation of laterite nickel ore provided by the application;

[0018] FIG. 2 is a schematic diagram of the receiving structure, guide structure, distribution structure, identification structure and discharging structure of the spiral chute for beneficiation of laterite nickel ore provided by the application;

[0019] FIG. 3 is a schematic diagram of the receiving structure, guide structure, distribution structure, identification structure and discharging structure of the spiral chute for beneficiation of laterite nickel ore provided by the application from the top view;

[0020] FIG. 4 is a schematic diagram of the guide structure of the spiral chute for beneficiation of laterite nickel ore provided by the application;

[0021] FIG. 5 is a schematic diagram of the guide structure of the spiral chute for beneficiation of laterite nickel ore provided by the application;

[0022] FIG. 6 is a schematic diagram of the receiving structure of the spiral chute for beneficiation of laterite nickel ore provided by the application from the front view;

[0023] FIG. 7 is a schematic diagram of the identification structure of the spiral chute for beneficiation of laterite nickel ore provided by the application from the side view;

[0024] FIG. 8 is a schematic diagram of the feeding structure of the spiral chute for beneficiation of laterite nickel ore provided by the application from the three-dimensional view.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, spiral chute;

[0027] 2, receiving structure; 21, receiving frame; 22, trough; 23, mounting frame;

[0028] 3, guide structure; 301, guide area; 31, guide piece; 311, fixed plate; 312, movable guide plate; 313, sliding column; 32, driving piece; 321, speed reduction gear set; 322, driving swing lever; 323, swing lever groove; 324, case; 3241, arc-shaped groove;

[0029] 4, shunt structure; 41, partition plate; 42, guide flow channel;

[0030] 5, identification structure; 51, detection module;

[0031] 6, discharging structure; 61, discharging frame; 62, discharging plate; 63, concentrate trough; 64, middling trough; 65, tailing trough; 66, concentrate discharge pipe; 67, middling discharge pipe; 68, tailing discharge pipe;

[0032] 7, feeding structure; 71, feeding box; 72, feeding pipe. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0034] In order to solve the technical problem that the mineral flow formed by the influence of water flow and mineral concentration during the separation process of the ore pulp will produce a certain deviation, and the separation precision and quality of the ore pulp are poor, the present application provides a spiral chute for laterite nickel ore beneficiation, which realizes accurate shunting of ore pulp of each grade and can improve the separation precision and quality of the ore pulp.

[0035] Please refer to FIGS. 1 to 7, the spiral chute for laterite nickel ore beneficiation includes a spiral chute body 1, a receiving structure 2 and a guide structure 3, the trough 22 of the receiving structure 2 corresponds to the discharge port of the spiral chute body 1; the guide structure 3 includes a plurality of groups of guide pieces 31 arranged side by side in the trough 22, the plurality of groups of guide pieces 31 are all arranged in the material flow direction to separate the trough 22 into a plurality of guide areas 301, one end close to the discharge end of the trough 22 forms a fixed end fixedly connected with the receiving structure 2, the other end forms a movable end, the movable end is rotatably connected with the fixed end, and the width of the feed of each guide area 301 is adjusted by rotating the movable end around the fixed end.

[0036] In the present application, the ore pulp is subjected to beneficiation through the spiral chute body 1, the ore pulp flows along the spiral slope at a certain speed, and different mineral particles are stratified due to different gravity, inertial centrifugal force and friction, thereby forming concentrate, middlings and tailings. The material guiding structure 3 includes a plurality of groups of material guiding pieces 31 arranged side by side in the chute 22, which divides the chute 22 into a plurality of material guiding areas 301. Each material guiding piece 31 has a fixed end and a movable end. The fixed end is arranged near the discharge position to form a fixed discharge port, while the movable end is arranged away from the discharge position and can rotate around the fixed end. When the stratification of the ore pulp deviates, the feeding width of each material guiding area 301 can be adjusted by rotating the movable end around the fixed end, thereby achieving accurate distribution of each grade of ore pulp.

[0037] In the present embodiment, referring to FIGS. 2, 4 and 6, the material receiving structure 2 includes a material receiving frame 21, which is arranged obliquely and has a chute 22 passing through both ends of the material receiving frame 21 at the top. The material receiving frame 21 is specifically arranged in a U-shaped structure. The feeding end of the material receiving frame 21 is connected to the discharge port of the spiral chute body 1. Specifically, the width of the chute 22 is equal to the width of the spiral groove in the spiral chute body 1, and they are connected in abutment. The ore pulp can be discharged according to the original stratification without damaging the stratification of the ore pulp.

[0038] Further, the inclination of the material receiving frame 21 is greater than that of the flow channel of the spiral chute body 1, which can increase the discharge speed of the ore pulp in the chute 22.

[0039] Since the stratification of the ore stream generally forms concentrate, middlings and tailings from the inside to the outside after the ore pulp is separated by the spiral chute body 1, in the present embodiment, referring to FIGS. 2 to 4, the material guiding pieces 31 are arranged in two groups, so that the chute 22 can form three material guiding areas 301 after being separated by the two groups of material guiding pieces 31. The three material guiding areas 301 correspond to concentrate, middlings and tailings from the inside to the outside, respectively. The fixed end of each group of material guiding pieces 31 includes a fixed plate 311, and the movable end includes a movable material guiding plate 312. The two fixed plates 311 are fixedly connected to the material receiving frame 21. The movable material guiding plate 312 is arranged at one end of the fixed plate 311 near the discharge port of the spiral chute body 1 and is rotatably connected to the fixed plate 311.

[0040] Specifically, the fixed plate 311 is arranged at the discharge end of the trough 22, so that the trough 22 has three outlets, and further, in some embodiments, referring to FIGS. 2 and 4, a discharge structure 6 is arranged at the outlets of the trough 22, the discharge structure 6 including a discharge frame 61 and two discharge plates 62 arranged in the discharge frame 61, the two discharge plates 62 separating the discharge frame 61 to form, from inside to outside, a concentrate groove 63, a middling groove 64 and a tailing groove 65, the concentrate groove 63, the middling groove 64 and the tailing groove 65 corresponding to the three outlets of the trough 22 respectively, and the bottom of the discharge frame 61 being provided with a concentrate discharge pipe 66, a middling discharge pipe 67 and a tailing discharge pipe 68 respectively communicating with the concentrate groove 63, the middling groove 64 and the tailing groove 65.

[0041] To further improve the separation accuracy and efficiency, in the present embodiment, referring to FIGS. 2 to 7, a shunt structure 4 and an identification structure 5 cooperating with the shunt structure 4 are further arranged, the shunt structure 4 being used to divide the slurry discharged from the spiral chute body 1 into multiple branch streams, and the identification structure 5 being used to identify the type of the slurry in each branch stream. Specifically, the shunt structure 4 is arranged at the feeding end of the trough 22 of the receiving structure 2 and located at an upstream position of the guide structure 3, the movable guide plate 312 being arranged at the middle part of the trough 22, and the fixed plate 311 being located at a downstream position of the trough 22, the shunt structure 4 including a plurality of partitions 41 arranged in the width direction of the trough 22 in sequence, the partitions 41 being arranged more than three, so that the feeding of the receiving structure 2 forms a plurality of guide flow channels 42. The end faces of the partitions 41 close to the guide structure 3 are arranged as arc surfaces, each of the arc surfaces being matched with the rotation track of two movable guide plates 312 respectively, so that the movable guide plate 312 can adapt to each partition 41 when swinging. The identification structure 5 includes a plurality of detection modules 51 arranged in the width direction of the trough 22, the detection modules 51 being used to monitor the color of the slurry, so that a control module connected with the detection modules can determine the type of the slurry according to the color of the slurry, the type of the slurry including concentrate, middling and tailing. The number of the detection modules 51 is equal to that of the guide flow channels 42, and the plurality of detection modules 51 correspond to the plurality of guide flow channels 42 respectively. After the slurry is separated by the spiral chute body 1, the slurry in each guide flow channel gradually decreases from inside to outside, and the detection modules 51 can identify the color of the slurry in each guide flow channel 42, and determine whether the slurry in the guide flow channel 42 belongs to concentrate, middling or tailing after detection through the control module. The control module is a PLC controller.

[0042] Preferably, in the present embodiment, the number of the partitions 41 is 8-14.

[0043] It should be noted that in the device, the detection module 51 can be a camera or the like shooting structure, and the camera transmits the shooting image to the control system after shooting. The control system identifies the color of the ore stream formed by the concentrate, middling and tailings in each guide channel 42, and can move the movable guide plate 312 to the target baffle 41 according to the identification information.

[0044] It can be understood that the present application takes ten baffles 41 as an example, and divides the feed of the trough 22 into eleven guide channels 42 through the ten baffles 41. At this time, the swing path of the movable guide plate 312 close to the inner side corresponds to the five baffles 41 close to the inner side, and the swing path of the movable guide plate 312 close to the outer side corresponds to the other five baffles 41. When the detection module 51 detects that the first three guide channels 42 on the inner side belong to the concentrate, the fourth to eighth guide channels 42 belong to the middling, and the ninth to eleventh guide channels 42 belong to the tailings. The target baffle 41 of the movable guide plate 312 close to the inner side is the third baffle 41, and the target baffle 41 of the other movable guide plate 312 is the eighth baffle 41. At this time, the two movable guide plates 312 need to be rotated to correspond to the third and eighth baffles 41 respectively. When the layering of the ore stream deviates, adjust the two movable guide plates 312 to rotate to one side of the corresponding target baffle 41.

[0045] In one embodiment, two driving members 32 are provided, and the two driving members 32 are used to control two movable guide plates 312 respectively. The driving member 32 is connected to the detection module 51 of the identification structure 5 through the control system, so as to judge whether the ore pulp in each guide channel 42 belongs to concentrate, middling or tailings through the control module based on the color of the ore pulp in each guide channel 42 detected by each detection module 51, and control the driving member 32 to drive the movable guide plate 312 to swing a set angle, so as to guide the ore pulp in the plurality of guide channels 42 into the corresponding guide area 301.

[0046] Specifically, the control mode of the swing angle of the movable guide plate 312 is that each side of the partition plate 41 close to the movable guide plate 312 is provided with a contact sensor, and the contact sensor is connected to the control module. When the control module determines that the ore pulp in each guide flow channel 42 belongs to concentrate, middling or tailings based on the color of the ore pulp in each guide flow channel 42 detected by each detection module 51, the control module can trigger the opening of the corresponding two contact sensors. When the movable guide plate 312 rotates and touches a corresponding contact sensor, the switch of the contact sensor is triggered, and the contact sensor sends a stop signal to the control module. The control module then sends a stop signal to the driving member 32, so that the driving member 32 stops driving the movable guide plate 312 to rotate, and the movable guide plate 312 remains in the appropriate position. Alternatively, the angle information of the movable guide plate 312 corresponding to the several opposite partition plates 41 is stored in the control system. After the control module determines that the ore pulp in each guide flow channel 42 belongs to concentrate, middling or tailings based on the color of the ore pulp in each guide flow channel 42 detected by each detection module 51, the control module can determine the angle deviation between the position of the movable guide plate 312 and the target position. By controlling the swing deviation angle of the movable guide plate 312, the movable guide plate 312 can be driven to the target position.

[0047] Further, in some embodiments, referring to FIG. 5, the driving member 32 includes a motor, a reduction gear set 321, and a driving swing rod 322. The upper side of the movable guide plate 312 is provided with a machine box 324, and the machine box 324 is fixed on the receiving frame 21. The motor is connected to the control module, and the motor is fixedly arranged in the machine box 324. The driving shaft of the motor is connected to the driving wheel of the reduction gear set. The driving wheel and the driven wheel of the reduction gear set are rotatably connected to the machine box 324. The diameter of the driving wheel is greater than that of the driven wheel. The driving swing rod 322 is fixedly arranged on one side of the driven gear of the reduction gear set 321. A slide column 313 is arranged on the fixed plate 311. A swing rod groove 323 is formed in the driving swing rod 322 along the length direction of the driving swing rod 322, and the slide column 313 is slidably connected to the swing rod groove 323. An arc-shaped groove 3241 is arranged on the bottom of the machine box 324 corresponding to the position of the slide column 313.

[0048] In implementation, the motor and the reduction gear set 321 can drive the swing rod 322 to rotate. When the swing rod rotates, the slide column 313 arranged in the swing rod groove 323 can drive the movable guide plate 312 to rotate, so as to drive the movable guide plate 312 to rotate to the target position.

[0049] In another embodiment, the identification structure 5 further comprises display lamps, and a mounting frame 23 is arranged on the receiving frame 21, and a display lamp is arranged on the mounting frame 23 at a position corresponding to each material guide channel 42, and the display lamp has three display colors, and when it is detected that the slurry in the material guide channel 42 belongs to the concentrate, the corresponding display lamp displays red, when it is detected that the slurry in the material guide channel 42 belongs to the middling, the corresponding display lamp displays green, and when it is detected that the slurry in the material guide channel 42 belongs to the tailings, the corresponding display lamp displays yellow, so as to more directly display whether the slurry belongs to the concentrate, the middling or the tailings. Of course, the fixing of the movable material guide plate 312 can also be realized by the fixing clamp, and the staff can manually rotate the movable material guide plate 312 corresponding to the target partition plate 41 according to the display information of the display lamp, and then clamp and fix the movable material guide plate 312 and the partition plate 41 by using the fixing clamp, and the length of the fixing frame is equal to the height of the partition plate 41.

[0050] Preferably, in the embodiment, referring to FIG. 8, the feeding structure 7 is further arranged at the feeding end of the spiral chute body 1, and the feeding structure 7 comprises a feeding box 71 horizontally arranged above the feeding channel of the spiral chute body 1, and feeding pipes 72 arranged in sequence at the bottom of the feeding box 71 along the length direction of the feeding box 71, and the upper end of the feeding box 71 is communicated with the ore feeding pipe, and in the implementation process, the slurry is first conveyed to the feeding box 71, and then uniformly discharged to the spiral chute body 1 through the feeding pipes 72. The feeding pipes 72 are arranged in an inclined manner, and the inclination angle is consistent with the spiral angle of the spiral chute body 1.

[0051] The spiral chute body 1, the receiving structure 2 and the material guide structure 3 are arranged, the material guide piece 31 arranged in the trough 22 divides the trough 22 of the receiving structure 2 into multiple material guide areas 301, each material guide piece 31 has a fixed end and a movable end, the fixed end is arranged at a position close to the discharge port to form a fixed discharge port, and the movable end is arranged at a position away from the discharge port, and the movable end can rotate around the fixed end, and when the stratification of the slurry deviates, the feeding width of each material guide area 301 can be adjusted by rotating the movable end around the fixed end, so as to accurately separate each grade of slurry, and the separation precision and quality of the slurry can be improved.

[0052] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "mount", "connect", and "connect" should be broadly understood, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] It should be noted that in the present application, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0054] The specific embodiments of the present application described above do not constitute a limitation on the scope of protection of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. A spiral chute for beneficiation of laterite nickel ore, characterized in that, The application relates to a spiral chute for beneficiating laterite nickel ore. The spiral chute comprises a spiral chute body, a material receiving structure, and a material guiding structure. The material receiving structure comprises a material receiving frame which is arranged in an inclined manner and has a material slot formed in the top portion of the material receiving frame and extending through both ends of the material receiving frame. The material guiding structure comprises a plurality of groups of material guiding members which are arranged in parallel in the material slot and extend along the material flow direction to divide the material slot into a plurality of material guiding areas. The material receiving frame is connected to the discharge port of the spiral chute body.

2. The spiral chute for the beneficiation of laterite nickel ore according to claim 1, characterized in that, The material guiding members are arranged in two groups.

3. The spiral chute for the beneficiation of laterite nickel ore according to claim 1, characterized in that, Each group of material guiding members comprises a fixed plate and a movable material guiding plate.

4. The spiral chute for the beneficiation of laterite nickel ore according to claim 3, characterized in that, The fixed plate is fixedly connected to the material receiving structure.

5. The spiral chute for the beneficiation of laterite nickel ore according to claim 4, characterized in that, The movable material guiding plate is arranged at one end of the fixed plate which is close to the discharge port of the spiral chute body and is rotatably connected to the fixed plate.

6. The spiral chute for the beneficiation of laterite nickel ore according to claim 5, characterized in that, The spiral chute for beneficiating laterite nickel ore further comprises a flow dividing structure which is arranged at the material feeding end of the material slot of the material receiving structure and is located upstream of the material guiding structure.

7. The spiral chute for the beneficiation of laterite nickel ore according to claim 6, characterized in that The flow dividing structure comprises a plurality of baffles which are arranged in sequence along the width direction of the material slot.

8. The spiral chute for the beneficiation of laterite nickel ore according to claim 7, characterized in that The end surface of each baffle which is close to the material guiding structure is arranged in an arc shape. The arc shape of each baffle is matched with the rotation track of two movable material guiding plates. The number of baffles is 8-14. The spiral chute further comprises an identification structure which comprises a plurality of detection modules which are arranged along the width direction of the material slot. The detection modules are used for monitoring the color of the ore pulp. The control module connected to the detection modules can determine the type of the ore pulp according to the color of the ore pulp. The type of the ore pulp includes concentrate, middling and tailings. The number of detection modules is equal to the number of material guiding channels. The material guiding structure further comprises a driving member which is connected to the detection modules of the identification structure through the control module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each detection module. The driving member drives the movable material guiding plates to swing by a set angle according to the color of the ore pulp in each material guiding channel detected by each 9. The spiral chute for the beneficiation of laterite nickel ore according to claim 8, characterized in that, Each of the baffle plates is provided with a contact sensor near one side of the movable guide plate, and the contact sensor is connected to the control module. When the control module determines that the ore pulp in each guide flow channel is concentrate, middling or tailings based on the color of the ore pulp detected by each detection module, the control module can trigger the corresponding two contact sensors to open. When the movable guide plate rotates to touch the contact sensor, the contact sensor sends a stop signal to the control module, so that the control module controls the driving member to stop.

10. The spiral chute for the beneficiation of laterite nickel ore according to claim 1, characterized in that, The spiral chute for processing laterite nickel ore also comprises a discharging structure arranged at the discharging end of the chute, which comprises a discharging frame and two discharging plates arranged at intervals in the discharging frame, and the discharging frame is divided to form a concentrate chute, a middling chute and a tailing chute from inside to outside. The bottom of the discharging frame is provided with a concentrate discharging pipe, a middling discharging pipe and a tailing discharging pipe which are in communication with the concentrate chute, the middling chute and the tailing chute respectively.

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