Impurity removal device for laterite nickel ore leachate

Abstract

The present application discloses an impurity removal device for a laterite nickel ore leachate, comprising a tank body, a filter member, and a cleaning assembly. The middle part of the tank body is provided with a filter area, and the side wall of the tank body is further provided with a liquid inlet in communication with the filter area; the filter member is provided with a plurality of compartments arranged at intervals in the circumferential direction of the filter member, the upper and lower sides of the compartments are provided with filter holes, each of the compartments is filled with a filter material, and the filter member is rotatably mounted in the filter area, such that when the filter member rotates, the liquid inlet can be in communication with one of the compartments; and the cleaning assembly is connected to the liquid inlet. The present application enables thorough cleaning of the filter materials in the compartments, thereby achieving a good cleaning effect.

Description

A device for removing impurities from laterite nickel ore leaching solution TECHNICAL FIELD

[0001] The present application relates to the technical field of laterite nickel ore processing equipment, in particular to a device for removing impurities from laterite nickel ore leaching solution. BACKGROUND

[0002] In the process of preparing nickel sulfate and cobalt sulfate from laterite nickel ore, it is necessary to extract and remove impurities from the laterite nickel ore leaching solution.

[0003] Chinese patent CN113061748A discloses a laterite nickel ore leaching solution treatment system and method, which comprises a device for removing impurities, an extraction device and an oil removal device. The device for removing impurities comprises a first filter body, a first pipe and a second pipe. The first filter body has a first clear liquid zone, a first filter zone and a first settling zone arranged in sequence from top to bottom. The first filter zone is filled with filter material. The first pipe is used to pass the laterite nickel ore leaching solution into the first settling zone. The laterite nickel ore leaching solution forms a first mixture under the action of the filter material. The second pipe is used to discharge the first mixture outside the first filter body. The extraction device is used to extract the first mixture to separate an oil-cobalt mixed solution and an oil-nickel mixed solution. The oil removal device is used to filter the oil-cobalt mixed solution to form a cobalt solution and filter the oil-nickel mixed solution to form a nickel solution.

[0004] When cleaning the filter material in the first filter zone, the above-mentioned technology continuously passes liquid into the first filter zone through the sixth pipe to continuously turn the filter material in the first filter zone, so that the suspended solids solidified on the filter material fall off and sink to the bottom of the first settling zone. However, the liquid sprayed by the sixth pipe cannot cover the entire filter zone, and the filter material in the entire filter zone cannot be cleaned, resulting in poor cleaning effect.

[0005] SUMMARY

[0006] The present application aims to overcome the above technical deficiencies and provides a device for removing impurities from laterite nickel ore leaching solution, which solves the technical problem that the filter material in the entire filter zone cannot be cleaned in the prior art, resulting in poor cleaning effect.

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

[0008] The present application provides a device for removing impurities from laterite nickel ore leaching solution, which comprises:

[0009] A tank body is provided with a filter zone in the middle, and the side wall of the tank body is further provided with a liquid inlet communicating with the filter zone.

[0010] The filter is rotatably installed in the filter area, so that the liquid inlet can communicate with one of the compartments when the filter rotates.

[0011] The cleaning assembly is connected with the liquid inlet.

[0012] In some embodiments, the filter comprises two filter plates and a plurality of partition plates, the filter plates are adapted to the tank body, the two filter plates are arranged in a spaced manner from top to bottom, the filter plates are provided with the filter holes, the partition plates are located between and connected to the two filter plates, and adjacent two partition plates and the filter plates jointly enclose the compartments.

[0013] In some embodiments, the tank body is provided with a cavity corresponding to the side wall of the filter area and a plurality of first liquid injection holes communicating the cavity and the compartments, and the cavity communicates with the liquid inlet.

[0014] In some embodiments, the tank body is further provided with a clear liquid area and a sedimentation area located on the upper and lower sides of the filter area respectively.

[0015] The laterite nickel ore leaching solution impurity removal device further comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe communicates with the sedimentation area, and the liquid outlet pipe is connected to the clear liquid area.

[0016] In some embodiments, the laterite nickel ore leaching solution impurity removal device further comprises a first baffle, the first baffle is adapted to the compartments, the first baffle is installed on the side wall of the tank body and located on the upper side of the filter, the first baffle is in sealing cooperation with the upper side of the filter, and the first baffle is located on the same side as the liquid inlet.

[0017] In some embodiments, the first baffle is provided with a cavity connected with the cleaning assembly, and the lower side of the first baffle is provided with a plurality of second liquid injection holes communicating with the cavity.

[0018] In some embodiments, the laterite nickel ore leaching solution impurity removal device further comprises a second baffle, the second baffle is adapted to the compartments, the second baffle is provided on the side wall of the tank body and located on the lower side of the filter, the second baffle is in sealing cooperation with the lower side of the filter, and the second baffle corresponds to the first baffle.

[0019] The side wall of the tank body is further provided with a liquid outlet, and the liquid inlet and the liquid outlet communicate with the same compartment.

[0020] In some embodiments, the upper side of the second baffle is provided with a liquid storage groove communicating with the compartments, and the liquid storage groove communicates with the liquid outlet.

[0021] In some embodiments, one end of the liquid inlet pipe extends into the settling zone and is arranged to be bent downward;

[0022] The bauxite nickel ore leaching solution impurity removal device further comprises a third baffle connected to the end of the liquid inlet pipe and located below the liquid inlet pipe.

[0023] In some embodiments, the bottom of the tank body is conical, and the bottom of the tank body is further provided with a blowdown port;

[0024] The bauxite nickel ore leaching solution impurity removal device further comprises a scraper rotatably installed on the bottom of the tank body, and the scraper is used to clean the suspended solids on the bottom of the tank body.

[0025] In some embodiments, the bauxite nickel ore leaching solution impurity removal device further comprises a detection device arranged on the liquid outlet pipe, and the detection device is used to detect the flow rate of the material in the liquid outlet pipe.

[0026] In some embodiments, the bauxite nickel ore leaching solution impurity removal device further comprises a connecting shaft connected to the filter element and arranged coaxially with the filter element, and the lower end of the connecting shaft is connected to the rotating shaft of the scraper, so that the scraper and the connecting shaft rotate synchronously.

[0027] Compared with the prior art, the bauxite nickel ore leaching solution impurity removal device provided by the present application has the following advantages: the middle part of the tank body is provided with a filter zone, the side wall of the tank body is further provided with a liquid inlet port communicating with the filter zone, the filter element is provided with a plurality of compartments arranged at intervals along the circumferential direction thereof, each of the compartments is filled with filter material, the filter element is rotatably installed in the filter zone, and the cleaning assembly is connected to the liquid inlet port. In use, the leaching solution is introduced into the tank body for impurity removal. As the leaching solution continues to be introduced, the suspended solids adsorbed on the surface of the filter material increase, which affects the impurity removal efficiency, and the filter material needs to be backwashed. The filter element is rotated so that the liquid inlet port of the filter zone is in communication with one of the compartments, and the cleaning assembly is used to introduce cleaning liquid into the compartment to backwash the filter material in the compartment, so that the filter material in the compartment is continuously turned over, and the suspended solids adhered to the filter material are removed. When the filter material in the compartment is cleaned, the filter element is rotated so that the next compartment is in communication with the liquid inlet port of the filter zone, and the filter material in the next compartment can be backwashed. As the filter element rotates, the filter material in each compartment can be cleaned one by one. The volume of the compartment is much smaller than the volume of the filter zone, so that the liquid sprayed from the liquid inlet port of the filter zone can cover the entire compartment, thereby comprehensively cleaning the filter material in the compartment, and the cleaning effect is good.

[0028] The above description is only a summary of the technical solutions of the present application. In order to make the technical solutions and advantages of the present application clearer, and to enable the present application to be implemented according to the content of the description, the preferred embodiments of the present application are described in detail below with reference to the accompanying drawings. The specific embodiments of the present application are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a structural schematic diagram of an embodiment of the red soil nickel ore leaching solution impurity removal device provided by the present application;

[0030] Fig. 2 is a front view of the impurity removal device in Fig. 1;

[0031] Fig. 3 is a top view of the impurity removal device in Fig. 2;

[0032] Fig. 4 is a front view of the tank body in Fig. 2;

[0033] Fig. 5 is a partial view of the tank body in Fig. 3;

[0034] Fig. 6 is a left view of the tank body in Fig. 2;

[0035] Fig. 7 is a schematic diagram of the filter element in Fig. 2.

[0036] Explanation of reference signs:

[0037] 1-tank body, 11-filtering area, 12-clear liquid area, 13-settling area, 14-liquid inlet, 15-liquid outlet, 16-cavity, 17-first liquid injection hole, 18-drainage port, 19-third baffle, 2-filter element, 21-compartment, 22-filter plate, 221-filter hole, 23- partition, 3-cleaning assembly, 31-liquid storage tank, 32-cleaning pump, 4-liquid inlet pipe, 5-liquid outlet pipe, 6-first baffle, 61-cavity, 7-second baffle, 71-liquid storage groove, 8-connection shaft, 9-scraping plate. DETAILED DESCRIPTION

[0038] In order to make the technical solutions, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0039] In order to solve the technical problem that the filter material in the entire filtering area cannot be cleaned in the prior art, resulting in poor cleaning effect, the present application provides a red soil nickel ore leaching solution impurity removal device, which can clean the filter material in the compartment comprehensively and has good cleaning effect.

[0040] Please refer to Fig. 1, which is a structural schematic diagram of the red soil nickel ore leaching solution impurity removal device in an embodiment of the present application.

[0041] The application provides a device for removing impurities from laterite nickel ore leaching solution, which comprises a tank body 1, a filter 2 and a cleaning assembly 3, a filter area 11 is arranged in the middle of the tank body 1, a liquid inlet 14 communicating with the filter area 11 is further arranged on the side wall of the tank body 1, the filter 2 is provided with a plurality of compartments 21 arranged along the circumferential direction of the filter 2, filter holes 221 are arranged on the upper and lower sides of each compartment 21, each compartment 21 is filled with filter material, the filter 2 is rotatably arranged in the filter area 11, so that the liquid inlet 14 can communicate with one of the compartments 21 when the filter 2 rotates, and the cleaning assembly 3 is connected with the liquid inlet 14.

[0042] In the embodiment, the leaching solution is introduced into the tank body 1 to remove impurities, and the filter material is backwashed when the amount of suspended solids adsorbed on the surface of the filter material increases with the continuous introduction of the leaching solution, thereby affecting the impurity removal efficiency; the filter 2 is rotated so that the liquid inlet 14 is in communication with one of the compartments 21, and the cleaning assembly 3 is used to introduce cleaning liquid into the compartment 21 to backwash the filter material in the compartment 21, so that the filter material in the compartment 21 is continuously turned over, thereby causing the suspended solids adhered to the filter material to fall off. When the filter material in the compartment 21 is cleaned, the filter 2 is rotated so that the next compartment 21 is in communication with the liquid inlet 14, and the filter material in the next compartment 21 can be backwashed. With the rotation of the filter 2, the filter material in each compartment 21 can be cleaned one by one, and the volume of the compartment 21 is much smaller than the volume of the filter area 11, so that the liquid sprayed from the liquid inlet 14 can cover the entire compartment 21, thereby comprehensively cleaning the filter material in the compartment 21, and the cleaning effect is good.

[0043] In the embodiment, the cleaning assembly 3 comprises a liquid storage tank 31 and a cleaning pump 32, the liquid storage tank 31 is connected with the inlet of the cleaning pump 32 through a pipeline, the outlet of the cleaning pump 32 is connected with the liquid inlet 14 through a pipeline, the liquid storage tank 31 stores cleaning liquid, and the cleaning pump 32 can pump the cleaning liquid into the compartment 21.

[0044] In the embodiment, as shown in FIG. 7, the compartments 21 are arranged in a fan shape, and the compartments 21 are open on one side of the side wall of the tank body 1, so that the liquid inlet 14 can be in communication with the compartments 21, a plurality of filter holes 221 are arranged on the upper and lower sides of the compartments 21, the diameter of the filter holes 221 is smaller than the diameter of the filter material, thereby ensuring that the compartments 21 can accommodate the filter material and the leaching solution can smoothly pass through the compartments 21.

[0045] In one of the embodiments, the filter material can be one or more of granular activated carbon, ceramic particles, fiber balls and quartz sand.

[0046] In some embodiments, referring to FIG. 7, the filter 2 comprises two filter plates 22 and multiple partition plates 23, the filter plates 22 are adapted to the tank body 1, the two filter plates 22 are arranged in a top-to-bottom manner, the filter plates 22 are provided with filter holes 221, the partition plates 23 are located between the two filter plates 22 and connect the two filter plates 22, and adjacent two partition plates 23 and filter plates 22 jointly enclose the compartments 21.

[0047] In the embodiment, the filter plates 22 are arranged in a circular manner, the diameter of the filter plates 22 is adapted to the inner diameter of the tank body 1, the side surface of the filter plates 22 is in sealing fit with the side wall of the tank body 1, the two filter plates 22 jointly enclose a cylindrical cavity 61 with the side wall of the tank body 1, the partition plates 23 are located in the cylindrical cavity 61, and the partition plates 23 are arranged along the radial direction of the cylindrical cavity 61, the upper and lower ends of the partition plates 23 are connected with the two filter plates 22 respectively, and the middle part of the cylindrical cavity 61 is further provided with a connecting piece, the inner side of the partition plates 23 is connected with the connecting piece, thereby forming the compartments 21 arranged in a fan shape.

[0048] In some embodiments, referring to FIGS. 4-6, the side wall of the tank body 1 corresponding to the filter area 11 is provided with a cavity 16 and multiple first liquid injection holes 17 communicating the cavity 16 and the compartments 21, and the cavity 16 communicates with the liquid inlet 14.

[0049] In the embodiment, in order to comprehensively clean the filter material in the compartments 21, the side wall of the tank body 1 is further provided with a cavity 16, the cavity 16 communicates with the liquid inlet 14, and the side of the cavity 16 facing the compartments 21 is provided with multiple first liquid injection holes 17, and the multiple first liquid injection holes 17 are arranged in an array. Specifically, the cleaning liquid output by the cleaning assembly 3 first enters the cavity 16, and then is injected into the compartments 21 from the multiple first liquid injection holes 17. In this way, the cleaning liquid can be uniformly sprayed into the compartments 21, thereby improving the cleaning effect.

[0050] In some embodiments, referring to FIGS. 2-5, the tank body 1 is further provided with a clear liquid area 12 and a sedimentation area 13 located on the upper and lower sides of the filter area 11 respectively; the laterite nickel ore leaching solution impurity removal device further comprises a liquid inlet pipe 4 and a liquid outlet pipe 5, the liquid inlet pipe 4 communicates with the sedimentation area 13, and the liquid outlet pipe 5 is connected with the clear liquid area 12 and is used to output the filtered leaching solution.

[0051] In the embodiment, the tank body 1 is sequentially divided into the clear liquid area 12, the filter area 11 and the sedimentation area 13 from top to bottom, the liquid inlet pipe 4 is used to deliver the leaching solution to the sedimentation area 13, and the leaching solution is filtered in a bottom-to-top overflow manner, and the filtered leaching solution is output through the liquid outlet pipe 5.

[0052] In some embodiments, referring to Figures 4-5, the laterite nickel ore leaching solution impurity removal device further comprises a first baffle 6, which is adapted to the compartment 21, is installed on the side wall of the tank body 1 and is located above the filter element 2, is in sealing fit with the upper side of the filter element 2, and is arranged on the same side as the liquid inlet 14.

[0053] In this embodiment, when cleaning, the compartment 21 contains a large amount of suspended matter in the liquid. In order to avoid the suspended matter from splashing upwards to the clear liquid area 12, a first baffle 6 can be arranged on the side wall of the tank body 1. The first baffle 6 is arranged in a fan shape and is adapted to the shape of the compartment 21. The first baffle 6 and the liquid inlet 14 are arranged on the same side, i.e. the first baffle 6 is located above the liquid inlet 14. When the compartment 21 to be cleaned is rotated to a position in communication with the liquid inlet 14, the first baffle 6 is located just above the compartment 21 and seals the compartment 21. At this time, the liquid in the compartment 21 cannot overflow upwards but can only flow downwards to the sedimentation area 13.

[0054] In some embodiments, referring to Figure 5, the first baffle 6 is provided with a cavity 61 connected with the cleaning assembly 3. The lower side of the first baffle 6 is provided with a plurality of second liquid injection holes in communication with the cavity 61.

[0055] In this embodiment, in order to further improve the cleaning efficiency, the first baffle 6 is a hollow structure, which is provided with a cavity 61. The lower side of the first baffle 6 is provided with a plurality of second liquid injection holes. The cavity 61 is also connected with the cleaning assembly 3. In use, the cleaning assembly 3 can deliver cleaning liquid into the cavity 61. Then the cleaning liquid is injected from the second liquid injection holes from top to bottom to the filter material in the compartment 21 through the filter holes 221. In combination with the horizontal injection of cleaning liquid by the first liquid injection hole 17, the cleaning efficiency can be improved, the filter material can be quickly cleaned, and the water flow from top to bottom can drive the suspended matter to move downwards, which can quickly remove the suspended matter from the compartment 21.

[0056] In some embodiments, referring to Figures 4-5, the laterite nickel ore leaching solution impurity removal device further comprises a second baffle 7, which is adapted to the compartment 21, is arranged on the side wall of the tank body 1 and is located below the filter element 2, is in sealing fit with the lower side of the filter element 2, and corresponds to the first baffle 6. The side wall of the tank body 1 is further provided with a liquid outlet 15. The liquid inlet 14 and the liquid outlet 15 are in communication with the same compartment 21.

[0057] In the embodiment, for the compartment 21 being cleaned, the liquid therein is mostly cleaning liquid and only contains a small amount of leaching liquid, so the liquid can be guided out for separate treatment, and therefore the second baffle 7 is further arranged on the side wall of the tank body 1, the second baffle 7 is located directly below the first baffle 6, the distance between the first baffle 6 and the second baffle 7 is the thickness of the filter element 2, and the liquid outlet 15 is also located below the liquid inlet 14. The second baffle 7 can block the lower side of the compartment 21, so that the liquid is discharged from the liquid outlet 15, to avoid the liquid entering the sedimentation area 13.

[0058] Specifically, during cleaning, the first baffle 6 and the second baffle 7 seal the compartment 21, so that the compartment 21 is not in communication with the rest of the tank body, and each time only one of the compartments 21 is cleaned, and the rest of the compartments 21 can continue to filter, so that the laterite nickel ore leaching liquid can be continuously filtered without stopping to clean the filter material.

[0059] In the embodiment, the compartment 21 is provided with n, and due to the arrangement of the first baffle 6 and the second baffle 7, one of the compartments 21 cannot overflow upward for filtering, at this time, the number of compartments 21 that can play a filtering role is n-1, which has a certain influence on the filtering efficiency. In order to reduce the influence of the first baffle 6 and the second baffle 7 as much as possible, the number of compartments 21 can be increased as much as possible, and the cross-sectional area of a single compartment 21 is reduced, and correspondingly, the cross-sectional area of the first baffle 6 and the second baffle 7 is also reduced, so that the cleaning of the filtering efficiency is reduced, and at the same time, due to the reduction of the volume of the compartment 21, the filter material therein is also less, which is beneficial to the cleaning of the filter material.

[0060] In some embodiments, referring to FIG. 5, the second baffle 7 is provided with a liquid storage groove 71 communicating with the compartment 21 on the upper side, and the liquid storage groove 71 communicates with the liquid outlet 15. The liquid storage groove 71 communicates with the compartment 21 through the filter hole 221, and during cleaning, the liquid in the compartment 21 enters the liquid storage groove 71 from top to bottom, and then is discharged through the liquid outlet 15. By arranging the liquid storage groove 71, the suspended matter can be quickly taken away from the compartment 21.

[0061] In some embodiments, one end of the liquid inlet pipe 4 extends into the sedimentation area 13 and is bent downward; the laterite nickel ore leaching liquid impurity removal device further comprises a third baffle 19, the third baffle 19 is connected to the end of the liquid inlet pipe 4 and is located below the liquid inlet pipe 4.

[0062] In the embodiment, the filtering mode is from bottom to top overflow filtration, that is, the liquid inlet pipe 4 delivers the leaching liquid to the sedimentation area 13, and the liquid in the sedimentation area 13 slowly deposits and overflows to the filtering area 11 and the clear liquid area 12. In order to avoid the liquid flowing out of the liquid inlet pipe 4 from impacting the bottom of the tank body 1, a third baffle 19 is also arranged at intervals below the liquid inlet pipe 4, and the third baffle 19 is used to change the flow direction of the liquid inlet pipe 4, so that the liquid in the liquid inlet pipe 4 slowly flows into the sedimentation area 13 to avoid impacting the tank body 1.

[0063] In some embodiments, the bottom of the tank body 1 is conical, and the tank body 1 is also provided with a blowdown port 18; the laterite nickel ore leaching liquid impurity removal device further comprises a scraper 9, which is rotatably installed at the bottom of the tank body 1, and the scraper 9 is used to clean the suspended matter at the bottom of the tank body 1.

[0064] In the embodiment, since the sedimentation area 13 is located at the bottom of the tank body 1, the bottom of the sedimentation area 13 will deposit fine suspended matter, which needs to be cleaned regularly. Therefore, the scraper 9 is also arranged at the bottom of the tank body 1, the scraper 9 abuts against the side wall of the tank body 1, and the blowdown port 18 is arranged at the conical wall of the tank body 1. Specifically, when the fine suspended matter deposited at the bottom of the tank body 1 needs to be cleaned, the blowdown port 18 is opened, and the scraper 9 is started, so that the fine suspended matter at the bottom is suspended in the liquid by the disturbance of the scraper 9, and then is discharged from the blowdown port 18 with the liquid. In this way, the fine suspended matter at the bottom of the tank body 1 can be effectively cleaned.

[0065] In the embodiment, the laterite nickel ore leaching liquid impurity removal device further comprises a rotating shaft and a driving device, the rotating shaft is rotatably installed along the axis in the vertical direction at the bottom of the tank body, the scraper 9 is conically arranged to adapt to the bottom of the tank body 1, the scraper 9 is installed on the rotating shaft, and the driving device is connected with the rotating shaft to drive the rotating shaft and the scraper 9 to rotate.

[0066] In some embodiments, the laterite nickel ore leaching liquid impurity removal device further comprises a detection device, which is arranged at the liquid outlet pipe 5, and is used to detect the flow rate of the material in the liquid outlet pipe 5.

[0067] In the embodiment, as the input of the leaching solution continues, the suspended solids adsorbed by the filter material gradually increase, resulting in the gradual decrease of the filtering effect of the filter material, and the flow rate of the discharge pipe 5 also decreases. Since the filter material is cleaned by the cleaning assembly 3 only when the filtering effect of the filter material decreases to a certain extent, in order to determine when the filter material needs to be cleaned, a detection device can be arranged at the discharge pipe 5, which can detect the flow rate of the material in the discharge pipe 5. By monitoring the flow rate of the discharge pipe 5, the amount of suspended solids adsorbed by the filter material can be monitored. When the flow rate detected by the detection device is lower than a set value, it indicates that the filter material has adsorbed a large amount of suspended solids and needs to be cleaned, and the cleaning assembly 3 can be started to clean the filter material.

[0068] In the embodiment, the detection device is a flow meter.

[0069] In some embodiments, referring to FIG. 2, the laterite nickel ore leaching solution impurity removal device further comprises a connecting shaft 8, which is connected with the filter member 2 and coaxially arranged with the filter member 2. The lower end of the connecting shaft 8 is connected with the rotating shaft of the scraper 9, so that the scraper 9 and the connecting shaft 8 rotate synchronously.

[0070] In the embodiment, the connecting shaft 8 is coaxially arranged with the tank body 1 and the rotating shaft, and the lower end of the connecting shaft 8 is fixedly connected with the rotating shaft. The filter member 2 is provided with an installation hole in the middle part, and the filter member 2 is installed on the connecting shaft 8 through the installation hole and is fixedly connected with the connecting shaft 8. Thus, the rotating shaft and the connecting shaft 8 are simultaneously driven to rotate by the driving device, and the scraper 9 and the filter member 2 rotate synchronously.

[0071] In the embodiment, in order to avoid the filter material entering the first liquid injection hole 17, a filter screen is further arranged at the opening of the compartment 21, and the aperture of the filter screen is smaller than the diameter of the filter material.

[0072] In order to better understand the present application, the technical solutions of the present application will be described in detail below in combination with FIGS. 1 to 7:

[0073] Firstly, the flow rate of the drain pipe 5 is detected in real time by the detection device, and when the flow rate of the drain pipe 5 is lower than a set value, the cleaning assembly 3 is started, the cleaning pump delivers cleaning liquid from the liquid inlet 14 into the cavity 16, and then sprays the cleaning liquid into the compartment 21 in a horizontal direction through the first spray hole 17, and at the same time, the cleaning pump also pumps cleaning liquid into the cavity 61 through a pipeline, and then sprays the cleaning liquid into the compartment 21 in a direction from top to bottom through the second spray hole, so that the filter material in the compartment 21 is constantly turned over, and then the suspended solids adhered to the filter material are detached and enter the liquid storage tank 71, and the cleaning of the filter material is completed. After the cleaning is completed, the cleaning assembly 3 is closed, the connecting shaft 8 and the filter element 2 are driven to rotate, so that the next compartment 21 corresponds to the liquid inlet 14, and the cleaning assembly 3 is started again to clean the compartment 21, and the above operation is repeated until the filter material in all the compartments 21 is cleaned.

[0074] The present application can clean the filter material in each compartment 21 one by one, and the volume of the compartment 21 is much smaller than the volume of the filter area 11, so that the liquid sprayed from the liquid inlet 14 can cover the entire compartment 21, thereby comprehensively cleaning the filter material in the compartment 21, and the cleaning effect is good.

[0075] The specific embodiments of the present application described above do not constitute a limitation on the protection scope of the present application. Any various 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 device for removing impurities from a laterite nickel ore leach liquor, characterised in that, The device comprises: a tank body, a filtering area is arranged in the middle of the tank body, and a liquid inlet communicating with the filtering area is arranged on the side wall of the tank body; a filter, a plurality of compartments are arranged along the circumferential direction of the filter, filter holes are arranged on the upper and lower sides of the compartments, filter materials are filled in each compartment, and the filter is rotatably arranged in the filtering area, so that the liquid inlet can communicate with one of the compartments when the filter rotates; a cleaning assembly connected with the liquid inlet. The filter comprises two filter plates and a plurality of partition plates, the filter plates are matched with the tank body, the two filter plates are arranged in a spaced manner from top to bottom, the filter plates are provided with the filter holes, and the partition plates are arranged between and connected with the two filter plates, and the adjacent two partition plates and the filter plates jointly enclose the compartments.

2. The limed nickel ore leach solution impurity removal apparatus of claim 1, wherein, The side wall of the tank body corresponding to the filtering area is provided with a cavity and a plurality of first liquid injection holes communicating with the cavity and the compartments, and the cavity communicates with the liquid inlet.

3. The limed nickel ore leach solution impurity removal apparatus of claim 1, wherein, The tank body is further provided with a clear liquid area and a sedimentation area arranged on the upper and lower sides of the filtering area respectively.

4. The limed nickel ore leach solution impurity removal apparatus of claim 1, wherein, The device for removing impurities from laterite nickel ore leaching solution further comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe communicates with the sedimentation area, and the liquid outlet pipe is connected with the clear liquid area. The device for removing impurities from laterite nickel ore leaching solution further comprises a first baffle matched with the compartments, the first baffle is arranged on the side wall of the tank body and located on the upper side of the filter, the first baffle is in sealing cooperation with the upper side of the filter, and the first baffle is arranged on the same side as the liquid inlet.

5. The limed nickel ore leach solution impurity removal apparatus of claim 4, wherein, The first baffle is provided with a cavity connected with the cleaning assembly, and the lower side of the first baffle is provided with a plurality of second liquid injection holes communicating with the cavity.

6. The limed nickel ore leach solution impurity removal apparatus of claim 5, wherein, The device for removing impurities from laterite nickel ore leaching solution further comprises a second baffle matched with the compartments, the second baffle is arranged on the side wall of the tank body and located on the lower side of the filter, the second baffle is in sealing cooperation with the lower side of the filter, and the second baffle corresponds to the first baffle.

7. The limed nickel ore leach solution impurity removal apparatus of claim 5, wherein, The side wall of the tank body is further provided with a liquid outlet, and the liquid inlet and the liquid outlet communicate with the same compartment. The upper side of the second baffle is provided with a liquid storage groove communicating with the compartments, and the liquid storage groove communicates with the liquid outlet.

8. The laterite nickel ore leachate impurity removal apparatus according to claim 7, characterised in that, One end of the liquid inlet pipe extends into the sedimentation area and is arranged in a downward bending manner.

9. The device for removing impurities from a laterite nickel ore leaching solution according to claim 4, characterized in that, The device for removing impurities from laterite nickel ore leaching solution further comprises a third baffle connected with the end of the liquid inlet pipe and located below the liquid inlet pipe. The bottom of the tank body is conical, and the bottom of the tank body is further provided with a pollution outlet.

10. The laterite nickel ore leachate impurity removal apparatus according to claim 1, characterized in that, The device for removing impurities from laterite nickel ore leaching solution further comprises a scraper rotatably arranged on the bottom of the tank body, and the scraper is used for cleaning the suspended matter on the bottom of the tank body. ​

Images