Spiral chute for laterite-nickel ore beneficiation

Abstract

The spiral chute for laterite-nickel ore dressing comprises a spiral chute body, a material receiving structure and a material guiding structure, and a material groove of the material receiving structure corresponds to a discharging opening of the spiral chute body; the material guiding structure comprises a plurality of groups of material guiding pieces which are arranged in the material groove in parallel, the plurality of groups of material guiding pieces extend in the material flowing direction so as to divide the material groove into a plurality of material guiding areas, one end, close to the discharging end of the material groove, of each material guiding piece forms a fixed end fixedly connected with the material receiving structure, and the other end of each material guiding piece forms a movable end; and the movable end is rotationally connected with the fixed end, so that the feeding width of each material guide area can be adjusted through the rotation of the movable end around the fixed end. According to the device, accurate flow division of ore pulp of all grades can be achieved, and the ore pulp separation precision and quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of laterite nickel ore dressing, and in particular to a spiral chute for laterite nickel ore dressing. Background Art

[0002] Laterite nickel ore is a loose clay-like aggregate of nickel, iron, magnesium, cobalt, silicon, aluminum and other element oxides formed by long-term weathering, leaching, impregnation, and alteration of nickel-bearing olivine bedrock in tropical or subtropical regions. The iron element is severely oxidized to +3 valence, resulting in a reddish-brown appearance, hence the name laterite nickel ore. In the hydrometallurgy of laterite nickel ore, a spiral chute is often used to sort out the chromium ore in the slurry, thereby reducing the chromium content in the slurry. In the existing spiral chute, the spiral chute itself is fixed. When the material is added from the feed hopper at the top of the spiral chute, the material slides downward along the chute surface by its own weight, thereby generating centrifugal force. Different materials have different weights, and the centrifugal force generated is also different. Finally, the concentrate, middlings, and tailings are discharged from the three discharge ports arranged from the inside to the outside at the bottom of the spiral chute into the corresponding receiving trough below for collection.

[0003] Chinese patent CN206853885U discloses a spiral chute, which includes a frame and a receiving chute. The lower part of the frame is fixedly installed with the receiving chute by bolts. A motor reduction device is installed on the frame below the receiving chute by bolt connection. The output shaft of the motor reduction device is connected to the lower end of the main shaft through a coupling. The main shaft passes through the center of the receiving chute. The upper end of the main shaft is installed in the bearing seat. The bearing seat is fixedly installed on the frame 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 trough; the spiral trough is integrally cast with a cleaning trough, a porous water spraying thin plate and a spiral trough surface from the inside to the outside; the bottom of the spiral trough is bolted with a concentrate discharge port, a middling discharge port and a tailings discharge port; the top of the spiral trough is bolted with a water inlet hopper and a feed hopper; during the operation of the equipment, the spiral trough rotates in a circle, and the concentrate discharge port, middling discharge port and tailings discharge port installed at the bottom of the spiral trough are always facing the concentrate receiving trough, the middling receiving trough and the tailings receiving trough in the receiving trough respectively to unload the selected materials.

[0004] When the slurry flows along the inclined surface of the spiral chute at a certain speed, the mineral particles of different weights are stratified due to the different gravity, inertial centrifugal force and friction; the separation process of the mineral particles in the spiral chute generally goes through three stages. The first stage is the stratification of the particle group. The heavy minerals settle quickly and sink into the lower layer of the liquid flow, while the light minerals settle slowly and float on the upper layer of the liquid flow. The second stage is that the light and heavy minerals expand horizontally 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, during the slurry sorting process, the slurry will also be affected by the water flow and the concentration of the minerals. During the slurry stratification, the ore flow formed by the concentrate, the middling ore and the tailings will have a certain deviation, resulting in poor slurry sorting accuracy and quality. Summary of the invention

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a spiral chute for laterite nickel ore beneficiation to solve the technical problems in the prior art that during the slurry sorting process, the ore flow formed by the influence of water flow and mineral concentration will produce a certain deviation, resulting in poor slurry sorting accuracy and quality.

[0006] In order to achieve the above technical objectives, this application adopts the following technical solutions:

[0007] The present application provides a spiral chute for laterite nickel ore beneficiation, comprising: a spiral chute body, a material receiving structure and a material guiding structure, wherein the material trough of the material receiving structure corresponds to the material discharge port of the spiral chute body; the material guiding structure comprises a plurality of groups of material guiding members arranged in parallel in the material trough, wherein the plurality of groups of material guiding members are all extended along the material flow direction to separate the material trough into a plurality of material guiding areas, wherein one end thereof close to the material discharge end of the material trough forms a fixed end fixedly connected to the material receiving structure, and the other end forms a movable end, wherein the movable end is rotatably connected to the fixed end, so as to adjust the feed width of each material guiding area by rotating the movable end around the fixed end.

[0008] In some embodiments, the material receiving structure includes a material receiving frame, which is tilted and has a material trough on the top that runs through both ends of the material receiving frame, and the feed end of the material receiving frame is connected to the discharge port of the spiral chute body.

[0009] In some embodiments, the material guide members are provided in two groups, the fixed ends of each group of the material guide members include a fixed plate, and the movable ends include a movable material guide plate, the fixed plate is fixedly connected to the material receiving structure, the movable material guide plate is arranged at one end of the fixed plate close to the discharge port of the spiral chute body, and is rotatably connected to the fixed plate.

[0010] In some embodiments, the spiral chute for laterite nickel ore dressing further comprises a flow diversion structure, which is arranged at the feed end of the material trough of the material receiving structure and is located at the upstream position of the material guiding structure. The flow diversion structure comprises a plurality of baffles arranged in sequence along the width direction of the material trough, so that the feed of the material receiving structure forms a plurality of material guiding channels. The end surfaces of the plurality of baffles close to the material guiding structure are arranged as arc-shaped surfaces, and each of the arc-shaped surfaces respectively matches the rotation trajectory of the two movable material guiding plates, and the number of the baffles is 8-14.

[0011] In some embodiments, the spiral chute for laterite nickel ore dressing further includes an identification structure, which includes a plurality of detection modules arranged along the width direction of the trough, and the detection modules are used to monitor the color of the slurry, so that the control module connected to the detection modules can determine the type of the slurry according to the color of the slurry, and the types of the slurry include concentrate, middlings and tailings. The number of the detection modules is equal to that of the material guide channels, and the plurality of the detection modules correspond to the plurality of the material guide channels respectively.

[0012] In some embodiments, the material guide structure also includes a driving member, which is connected to the detection module of the identification structure through a control module, so as to judge whether the slurry in each material guide channel belongs to concentrate, middling or tailings based on the color of the slurry in each material guide channel detected by each detection module, and control the driving member to drive the movable material guide plate to swing at a set angle, so as to guide the slurry in multiple material guide channels into the corresponding material guide area; the driving member includes a motor, a reduction gear set and a driving rocker arm, a chassis is arranged above the movable material guide plate, the motor is arranged in the chassis, and its drive shaft is connected to the driving wheel of the reduction gear set, the driving rocker arm is fixedly arranged on one side of the driven gear of the reduction gear set, a sliding column is arranged on the fixed plate, and a rocker arm groove slidably connected to the sliding column is opened on the driving rocker arm along its length direction.

[0013] In some embodiments, a contact sensor is provided on one side of each partition close to the movable guide plate, and the contact sensor is connected to the control module. When the control module determines that the slurry in each material guide channel belongs to concentrate, middlings or tailings based on the color of the slurry in each material guide channel detected by each detection module, the control module can trigger the corresponding two contact sensors to turn on. 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 drive member to stop.

[0014] In some embodiments, the spiral chute for laterite nickel ore beneficiation also includes a discharge structure, which is arranged at the discharge end of the trough, and includes a discharge frame and two discharge plates arranged in the discharge frame at intervals, and the discharge frame is divided so that a concentrate trough, a middling trough and a tailings trough are formed in sequence from the inside to the outside. The bottom of the discharge frame is provided with a concentrate discharge pipe, a middling discharge pipe and a tailings discharge pipe which are respectively connected to the concentrate trough, the middling trough and the tailings trough.

[0015] Compared with the prior art, the spiral chute for laterite nickel ore beneficiation provided in the present application divides the material trough of the material receiving structure into multiple material guiding areas by material guiding pieces arranged in parallel in the material trough. Each material guiding piece has a fixed end and a movable end. The fixed end is arranged at a position close to the discharge to form a fixed discharge port, and the movable end is arranged at a position away from the discharge. The movable end can rotate around the fixed end. When the stratification of the ore slurry is offset, the feed width of each material guiding area can be adjusted by rotating the movable end around the fixed end, so as to realize accurate diversion of ore slurries of different grades, thereby improving the accuracy and quality of ore slurry sorting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a spiral chute for laterite nickel ore beneficiation provided in an embodiment of the present application;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of a material receiving structure, a material guiding structure, a flow dividing structure, an identification structure and a material discharging structure of a spiral chute for laterite nickel ore beneficiation provided in an embodiment of the present application;

[0018] Figure 3 It is a schematic diagram of a top view of a material receiving structure, a material guiding structure, a flow dividing structure, an identification structure and a material discharging structure of a spiral chute for laterite nickel ore beneficiation provided in an embodiment of the present application;

[0019] Figure 4 It is a structural schematic diagram of a material guide structure of a spiral chute for laterite nickel ore beneficiation provided in an embodiment of the present application;

[0020] Figure 5 It is a structural schematic diagram of a material guide structure of a spiral chute for laterite nickel ore beneficiation provided in an embodiment of the present application;

[0021] Figure 6 It is a schematic diagram of the main structure of the material receiving structure of the spiral chute for laterite nickel ore beneficiation provided in the embodiment of the present application;

[0022] Figure 7 It is a side view structural schematic diagram of the identification structure of the spiral chute for laterite nickel ore beneficiation provided in an embodiment of the present application;

[0023] Figure 8It is a three-dimensional structural schematic diagram of the feeding structure of the spiral chute for laterite nickel ore beneficiation provided in the embodiment of the present application.

[0024] Description of reference numerals:

[0025] 1. Spiral chute;

[0026] 2. Material receiving structure; 21. Material receiving frame; 22. Material trough; 23. Installation frame;

[0027] 3. Material guide structure; 301. Material guide area; 31. Material guide member; 311. Fixed plate; 312. Movable material guide plate; 313. Sliding column; 32. Driving member; 321. Reduction gear set; 322. Driving swing rod; 323. Swing rod slot; 324. Chassis; 3241. Arc slot;

[0028] 4. diversion structure; 41. partition; 42. material guide channel;

[0029] 5. Identification structure; 51. Detection module;

[0030] 6. Discharge structure; 61. Discharge frame; 62. Discharge plate; 63. Concentrate trough; 64. Middling trough; 65. Tailings trough; 66. Concentrate discharge pipe; 67. Middling discharge pipe; 68. Tailings discharge pipe;

[0031] 7. Feed structure; 71. Feed box; 72. Feed pipe. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] In order to solve the technical problem that the ore flow formed by the influence of water flow and mineral concentration during the slurry sorting process will produce a certain deviation, resulting in poor slurry sorting accuracy and quality, the present application provides a spiral chute for laterite nickel ore beneficiation, which realizes the precise diversion of slurries of different grades and can improve the slurry sorting accuracy and quality.

[0034] See also Figures 1 to 7The spiral chute for laterite nickel ore beneficiation includes: a spiral chute body 1, a material receiving structure 2 and a material guiding structure 3, wherein the material trough 22 of the material receiving structure 2 corresponds to the discharge port of the spiral chute body 1; the material guiding structure 3 includes a plurality of groups of material guiding members 31 arranged in parallel in the material trough 22, and the plurality of groups of material guiding members 31 are all extended along the material flow direction to separate the material trough 22 into a plurality of material guiding areas 301, one end of which is close to the discharge end of the material trough 22 forms a fixed end fixedly connected to the material receiving structure 2, and the other end forms a movable end, and the movable end is rotatably connected to the fixed end, so as to adjust the feed width of each material guiding area 301 by rotating the movable end around the fixed end.

[0035] In the present application, the ore pulp is beneficiated through the spiral chute body 1, and the ore pulp flows along the spiral slope at a certain speed. Mineral particles of different weights are layered due to the different gravity, inertial centrifugal force and friction, thereby forming concentrate, middlings and tailings. The guide structure 3 includes a plurality of groups of guide members 31 arranged in parallel in the material trough 22, which divide the material trough 22 into a plurality of guide areas 301. Each guide member 31 has a fixed end and a movable end. The fixed end is arranged at a position close to the discharge to form a fixed discharge port, and the movable end is arranged at a position away from the discharge. The movable end can rotate around the fixed end. When the stratification of the ore pulp is offset, the feed width of each guide area 301 can be adjusted by rotating the movable end around the fixed end to achieve accurate diversion of ore pulp of each grade.

[0036] In this example, see Figure 2 , Figure 4 and Figure 6 The material receiving structure 2 includes a material receiving frame 21, which is inclined and has a material trough 22 on the top that runs through both ends of the material receiving frame 21. The material receiving frame 21 is specifically configured as a U-shaped structure. The feed end of the material receiving frame 21 is connected to the discharge port of the spiral chute body 1. Specifically, the width of the material trough 22 is equal to the width of the spiral trough in the spiral chute body 1, and they are butt-connected, so that the slurry can be discharged according to the original stratification without destroying the stratification of the slurry.

[0037] Furthermore, the inclination of the material receiving frame 21 is set to be greater than the inclination of the flow channel of the spiral chute body 1 , which can speed up the discharge speed of the slurry in the material trough 22 .

[0038] Since the ore slurry is separated by the spiral chute body 1, the stratification of the ore flow generally forms concentrate, middlings and tailings from the inside to the outside in sequence, therefore, in this embodiment, please refer to Figures 2 to 4The guide members 31 are arranged in two groups, so that the material trough 22 can be divided by the two groups of guide members 31 to form three guide areas 301, and the three guide areas 301 correspond to concentrate, middlings and tailings from the inside to the outside. The fixed end of each group of guide members 31 includes a fixed plate 311, and the movable end includes a movable guide plate 312. The two fixed plates 311 are fixedly connected to the material receiving frame 21. The movable guide plate 312 is arranged at one end of the fixed plate 311 close to the discharge port of the spiral chute body 1, and is rotatably connected to the fixed plate 311.

[0039] Specifically, the fixing plate 311 is disposed at the discharge end of the trough 22, so that the trough 22 has three outlets. Further, in some embodiments, see Figure 2 and Figure 4 A discharge structure 6 is provided at the outlet of the material trough 22, and the discharge structure 6 includes a discharge frame 61 and two discharge plates 62 arranged at intervals in the discharge frame 61. The two discharge plates 62 separate the discharge frame 61 so that a concentrate trough 63, a medium ore trough 64 and a tailings trough 65 are formed in sequence from the inside to the outside. The concentrate trough 63, the medium ore trough 64 and the tailings trough 65 correspond to the three outlets of the material trough 22 respectively. A concentrate discharge pipe 66, a medium ore discharge pipe 67 and a tailings discharge pipe 68 which are connected to the concentrate trough 63, the medium ore trough 64 and the tailings trough 65 respectively are provided at the bottom of the discharge frame 61.

[0040] In order to further improve the sorting accuracy and efficiency, in this embodiment, please refer to Figures 2 to 7, a diversion structure 4 and an identification structure 5 coordinated with the diversion structure 4 are also provided. The diversion structure 4 is used to divide the ore pulp discharged from the spiral chute body 1 into multiple tributaries, and the identification structure 5 is used to identify the type of slurry in each tributary. Specifically, the diversion structure 4 is arranged at the feeding end of the material trough 22 of the material receiving structure 2, and is located at the upstream position of the material guiding structure 3. The movable material guiding plate 312 is arranged in the middle of the material trough 22, and the fixed plate 311 is located at the downstream position of the material trough 22. The diversion structure 4 includes a plurality of partitions 41 arranged in sequence along the width direction of the material trough 22. More than three partitions 41 are arranged, so that the feeding of the material receiving structure 2 forms a plurality of material guiding channels 42. The end faces of the plurality of partitions 41 close to the material guiding structure 3 are arranged as arc-shaped surfaces, and each of the arc-shaped surfaces respectively matches the rotation trajectory of the two movable material guiding plates 312, so that the movable material guiding plate 312 can adapt to each partition 41 when swinging. The identification structure 5 includes a plurality of detection modules 51 arranged along the width direction of the trough 22. The detection modules 51 are used to monitor the color of the slurry so that the control module connected to the detection module can judge the type of the slurry according to the color of the slurry. The types of the slurry include concentrate, middlings and tailings. The number of the detection modules 51 is equal to that of the guide channels 42. The plurality of detection modules 51 correspond to the plurality of guide channels 42 respectively. After the slurry is sorted by the spiral chute body 1, the slurry in each guide channel gradually decreases from the inside to the outside. The detection module 51 can identify the color of the slurry in each guide channel 42. After the detection, the control module can judge whether the slurry in the guide channel 42 belongs to concentrate, middlings or tailings. The control module is a PLC controller.

[0041] Preferably, in this embodiment, 8 to 14 partitions 41 are provided.

[0042] It should be noted that, in the present device, the detection module 51 can be a shooting structure such as a camera. After shooting, the camera transmits the captured image to the control system. The control system identifies the color of the ore flow formed by the concentrate, intermediate ore and tailings in each guide channel 42, and can move the movable guide plate 312 to correspond to the target partition 41 according to the identification information.

[0043] It can be understood that the present application takes the setting of ten baffles 41 as an example, and the feed of the material trough 22 is divided into eleven material guide channels 42 by ten baffles 41. At this time, the swing path of the movable material guide plate 312 near the inside corresponds to the five baffles 41 near the inside, and the swing path of the movable material guide plate 312 near the outside corresponds to the other five baffles 41. When the detection module 51 detects that the first three material guide channels 42 on the inside belong to concentrate, the fourth to eighth material guide channels 42 belong to medium ore, and the ninth to eleventh material guide channels 42 belong to tailings. The target baffle 41 of the movable material guide plate 312 near the inside is the third baffle 41, and the target baffle 41 of the other movable material guide plate 312 is the eighth baffle 41. At this time, the two movable material guide plates 312 need to be rotated to correspond to the third and eighth baffles 41 respectively. When the stratification of the ore flow is offset, adjust one end of the two movable material guide plates 312 to rotate to the side of the corresponding target baffle 41.

[0044] 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 members 32 are connected to the detection module 51 of the identification structure 5 through the control system, so as to judge whether the slurry in each guide channel 42 belongs to concentrate, intermediate ore or tailings based on the color of the slurry 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 to a set angle, so as to guide the slurry in multiple guide channels 42 into the corresponding guide area 301.

[0045] Specifically, the swing angle of the movable material guide plate 312 is controlled as follows: a contact sensor is provided on one side of each partition plate 41 close to the movable material guide plate 312, and the contact sensor is connected to the control module. When the control module determines that the slurry in each material guide channel 42 belongs to concentrate, intermediate ore or tailings based on the color of the slurry in each material guide channel 42 detected by each detection module 51, the control module can trigger the corresponding two contact sensors to turn on. When the movable material guide plate 312 touches the corresponding one of the contact sensors when rotating, the switch of the contact sensor will be triggered, so that the contact sensor sends a stop signal to the control module, and the control module transmits a stop signal to the driving member 32, so that the driving member 32 stops driving the movable material guide plate 312 to rotate, and the movable material guide plate 312 remains in a suitable position. Alternatively, the angle information of the movable guide plate 312 corresponding to several relative partitions 41 is stored in the control system. After the control module determines whether the slurry in each material guide channel 42 belongs to concentrate, middlings or tailings based on the color of the slurry in each material guide 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, and achieve the purpose of driving the movable guide plate 312 to the target position by controlling the swing deviation angle of the movable guide plate 312.

[0046] Further, in some embodiments, see Figure 5 The driving member 32 includes a motor, a reduction gear set 321 and a driving swing rod 322. A chassis 324 is arranged above the movable material guide plate 312, and the chassis 324 is fixed on the material receiving frame 21. The motor is connected to the control module, and the motor is fixedly arranged in the chassis 324. The driving shaft thereof is connected to the driving wheel of the reduction gear set. The driving wheel and the driven wheel of the reduction gear set are both rotatably connected to the chassis 324, and the diameter of the driving wheel is larger than the diameter 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 sliding column 313 is arranged on the fixed plate 311. A swing rod groove 323 slidably connected to the sliding column 313 is opened on the driving swing rod 322 along its length direction. An arc groove 3241 for the sliding column 313 to move is arranged at a position corresponding to the sliding column 313 at the bottom of the chassis 324.

[0047] During implementation, the motor and the reduction gear set 321 can drive the rocker arm 322 to rotate. When the rocker arm rotates, the sliding column 313 slidably set on the rocker arm slot 323 can drive the movable material guide plate 312 to rotate, thereby driving the movable material guide plate 312 to rotate to the target position.

[0048] In another embodiment, the identification structure 5 also includes a display light. An installation frame 23 is provided on the material receiving frame 21. A display light is provided at the top of the installation frame 23 corresponding to each material guide channel 42. The display light has three display colors. When it is detected that the slurry in the material guide channel 42 belongs to the concentrate, the corresponding display light displays red. When it is detected that the slurry in the material guide channel 42 belongs to the medium ore, the corresponding display light displays green. When it is detected that the slurry in the material guide channel 42 belongs to the tailings, the corresponding display light displays yellow, which displays in a more intuitive way whether the slurry belongs to the concentrate, the medium ore or the tailings. Of course, the fixing of the movable material guide plate 312 can also be achieved by a fixing clamp. The staff can manually rotate the movable material guide plate 312 to correspond to the target partition 41 according to the display information of the display light, and then use the fixing clamp to clamp the movable material guide plate 312 and the partition 41, wherein the length of the fixing frame is equal to the height of the partition 41.

[0049] Preferably, in this embodiment, please refer to Figure 8A feeding structure 7 is also provided at the feeding end of the spiral chute body 1, and the feeding structure 7 includes a feeding box 71 horizontally arranged above the feeding channel of the spiral chute body 1, and feeding pipes 72 arranged in sequence along the length direction of the feeding box 71 at the bottom of the feeding box 71, and the upper end of the feeding box 71 is connected to the ore feeding pipe. During implementation, the slurry is first transported to the feeding box 71, and then uniformly discharged to the spiral chute body 1 through the feeding pipe 72. The feeding pipe 72 is inclined, and its inclination angle is consistent with the spiral angle of the spiral chute body 1.

[0050] The present application provides a spiral chute body 1, a material receiving structure 2 and a material guiding structure 3, and divides the material trough 22 of the material receiving structure 2 into multiple material guiding areas 301 through material guiding members 31 arranged in parallel in the material trough 22. Each material guiding member 31 has a fixed end and a movable end. The fixed end is arranged at a position close to the discharge to form a fixed discharge port, and the movable end is arranged at a position away from the discharge. The movable end can rotate around the fixed end. When the stratification of the ore pulp is offset, the feed width of each material guiding area 301 can be adjusted by rotating the movable end around the fixed end, so as to achieve accurate diversion of ore pulp of each grade, thereby improving the accuracy and quality of ore pulp sorting.

[0051] In the description of the present application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0052] It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0053] The specific implementation methods of the present application described above do not constitute a limitation on the protection scope of the present application. Any other corresponding changes and modifications made according to the technical concept of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A spiral chute for laterite nickel ore dressing, characterized in that: include: Spiral chute body; A material receiving structure, wherein a material trough of the material receiving structure corresponds to a material discharge port of the spiral chute body; as well as, A material guiding structure, the material guiding structure includes a plurality of groups of material guiding members arranged in parallel in the material trough, the plurality of groups of material guiding members are extended along the material flow direction to divide the material trough into a plurality of material guiding areas, one end of the material guiding structure close to the material discharge end of the material trough forms a fixed end fixedly connected to the material receiving structure, and the other end forms a movable end, the movable end is rotatably connected to the fixed end, so that the feed width of each material guiding area can be adjusted by rotating the movable end around the fixed end.

2. The spiral chute for laterite nickel ore dressing according to claim 1, characterized in that: The material receiving structure comprises a material receiving frame, which is arranged obliquely, and a material trough penetrating through two ends of the material receiving frame is opened on the top, and the feeding end of the material receiving frame is connected with the discharge port of the spiral chute body.

3. The spiral chute for laterite nickel ore dressing according to claim 1, characterized in that: The material guide members are provided in two groups, and the fixed ends of each group of the material guide members include a fixed plate, and the movable ends include a movable material guide plate. The fixed plate is fixedly connected to the material receiving structure, and the movable material guide plate is arranged at one end of the fixed plate close to the discharge port of the spiral chute body and is rotatably connected to the fixed plate.

4. The spiral chute for laterite nickel ore dressing according to claim 3, characterized in that: The spiral chute for laterite nickel ore beneficiation also includes a diversion structure, which is arranged at the feed end of the material trough of the material receiving structure and is located upstream of the material guiding structure. The diversion structure includes a plurality of partitions arranged in sequence along the width direction of the material trough, so that the feed of the material receiving structure forms a plurality of material guiding channels.

5. The spiral chute for laterite nickel ore dressing according to claim 4, characterized in that: The end surfaces of several partitions close to the material guiding structure are arranged as arc-shaped surfaces, and each of the arc-shaped surfaces respectively matches the rotation trajectory of the two movable material guiding plates. The number of the partitions is 8-14.

6. The spiral chute for laterite nickel ore dressing according to claim 5, characterized in that: The spiral chute for laterite nickel ore beneficiation also includes an identification structure, which includes a plurality of detection modules arranged along the width direction of the trough, and the detection modules are used to monitor the color of the slurry so that a control module connected to the detection modules can determine the type of the slurry according to the color of the slurry, and the types of the slurry include concentrate, middlings and tailings.

7. The spiral chute for laterite nickel ore dressing according to claim 6, characterized in that: The number of the detection modules is equal to the number of the material guiding channels, and a plurality of the detection modules correspond to a plurality of the material guiding channels respectively.

8. The spiral chute for laterite nickel ore dressing according to claim 7, characterized in that: The material guide structure further includes a driving member, which is connected to the detection module of the identification structure through a control module, so as to judge whether the slurry in each material guide flow channel belongs to concentrate, middling or tailings based on the color of the slurry in each material guide flow channel detected by each detection module, and control the driving member to drive the movable material guide plate to swing to a set angle, so as to guide the slurry in the plurality of material guide flow channels into the corresponding material guide area; The driving component includes a motor, a reduction gear set and a driving rocker arm. A chassis is arranged above the movable material guide plate. The motor is arranged in the chassis. The driving shaft is connected to the driving wheel of the reduction gear set. The driving rocker arm is fixedly arranged on one side of the driven gear of the reduction gear set. A sliding column is arranged on the fixed plate. The driving rocker arm is provided with a rocker rod groove slidably connected to the sliding column along its length direction.

9. The spiral chute for laterite nickel ore dressing according to claim 8, characterized in that: A contact sensor is provided on one side of each partition close to the movable guide plate, and the contact sensor is connected to the control module. When the control module determines that the slurry in each material guide channel belongs to concentrate, middlings or tailings based on the color of the slurry in each material guide channel detected by each detection module, the control module can trigger the corresponding two contact sensors to turn on. 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 drive member to stop.

10. The spiral chute for laterite nickel ore dressing according to claim 1, characterized in that: The spiral chute for laterite nickel ore beneficiation also includes a discharge structure, which is arranged at the discharge end of the material trough, and includes a discharge frame and two discharge plates arranged in the discharge frame at intervals, and the discharge frame is divided so that a concentrate trough, a middling trough and a tailings trough are formed in sequence from the inside to the outside. The bottom of the discharge frame is provided with a concentrate discharge pipe, a middling discharge pipe and a tailings discharge pipe which are respectively connected to the concentrate trough, the middling trough and the tailings trough.

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