A laterite nickel ore slurry thickener

Abstract

The application discloses a laterite nickel ore slurry thickener, which comprises a thickener body, a plurality of turbidity detecting pieces and supernatant discharge mechanisms; the thickener body is provided with a conical accommodating cavity, the accommodating cavity is used for feeding laterite nickel ore slurry, the bottom end of the thickener body is provided with a discharge port, and the lower end of the thickener body is provided with a drainage port; each turbidity detecting piece is used for detecting the turbidity of the ore slurry at different depths in the accommodating cavity; and the supernatant discharge mechanism comprises a lifting pipe, a connecting hose and a lifting driving piece. The technical scheme has the beneficial effects that the height of the lifting pipe is controlled by the lifting driving piece, so that the height of the water inlet of the lifting pipe is equal to the height corresponding to the ore slurry with the preset turbidity, thereby the technical problem that the concentration of the discharged supernatant is too high to cause the waste of the ore slurry and the technical problem that the supernatant discharge speed is low due to the too high supernatant discharge port and the ore slurry thickening efficiency is affected can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thickener, in particular to a laterite nickel ore slurry thickener. BACKGROUND

[0002] The thickener is a solid-liquid separation equipment based on gravity sedimentation (for reference to the Chinese utility model patent with the application number CN201720688591.5), which is usually a cylindrical shallow tank with a conical bottom. The thickener can concentrate the ore slurry with a solid weight of 10% to 20% into the underflow slurry with a solid content of 45% to 55% through gravity sedimentation, and the thickened underflow slurry is discharged from the underflow port at the bottom of the thickener by the action of the rake installed in the thickener and slowly rotating (1 / 3 to 1 / 5 r / min). The relatively clean supernatant (overflow) is generated at the upper part of the thickener and discharged from the annular chute at the top.

[0003] For the development of laterite nickel ore, the concentration of laterite nickel ore slurry by the thickener can greatly reduce the operating cost of the subsequent process. Since the existing thickener basically discharges the supernatant from the annular chute at the top, the height of the annular chute is fixed. However, due to the continuous input of the ore slurry, the concentration of the ore slurry in the supernatant at the upper part of the thickener is continuously changing, which leads to a large fluctuation in the concentration of the ore slurry in the supernatant discharged from the annular chute. When the concentration of the ore slurry in the supernatant discharged is large, it will cause waste of the ore slurry. At the same time, since the height of the annular chute is fixed and usually arranged at the top of the thickener, only the top layer of the supernatant can be discharged, and the middle and lower layers of the supernatant cannot be discharged. The supernatant discharge efficiency is low, which leads to low thickening efficiency and even hinders the normal operation of the entire ore washing process. SUMMARY

[0004] Therefore, it is necessary to provide a laterite nickel ore slurry thickener to solve the technical problems of the large fluctuation in the concentration of the ore slurry in the supernatant discharged from the annular chute of the existing thickener, the possible waste of the ore slurry, and the low supernatant discharge efficiency.

[0005] In order to achieve the above-mentioned purpose, the present application provides a laterite nickel ore slurry thickener, characterized in that it comprises a thickener body, a plurality of turbidity detection pieces and a supernatant discharge mechanism.

[0006] The thickener body has a conical accommodating cavity for inputting the laterite nickel ore slurry, and the bottom end of the thickener body is provided with a discharge port, and the lower end of the thickener body is provided with a drain port.

[0007] Each turbidity detection piece is arranged on the inner side wall of the accommodating cavity in the vertical direction in sequence and is used for detecting the turbidity of the ore slurry at different depths in the accommodating cavity.

[0008] The supernatant discharge mechanism comprises a lifting pipe, a connecting hose and a lifting driving element, the lifting pipe is arranged in the accommodating cavity and is movable up and down, the upper end of the lifting pipe is sealed, a water inlet is formed in the side wall of the lifting pipe, a water inlet valve is arranged on the water inlet, the lower end of the lifting pipe is in communication with one end of the connecting hose, the other end of the connecting hose is in sealed connection with the water outlet, and the lifting driving element is used for controlling the height of the lifting pipe according to the turbidity of the ore pulp at different depths in the accommodating cavity measured by the turbidity detection element, so that the turbidity of the supernatant entering the water inlet is within a preset range.

[0009] In some embodiments, the turbidity detection element comprises a fixed block, a laser emitter and a laser receiver, the fixed block is fixed to the inner side wall of the accommodating cavity, the laser emitter and the laser receiver are both fixed to the fixed block, the laser emitter is used for emitting a laser beam with a preset light intensity to the laser receiver, and the laser receiver is used for receiving the laser beam and detecting the light intensity of the received laser beam.

[0010] In some embodiments, the lifting driving element comprises a vertical rod, a connecting plate and a lifting driving cylinder, one end of the vertical rod is fixedly connected with the lifting pipe, the other end of the vertical rod is fixedly connected with the connecting plate, the cylinder body of the lifting driving cylinder is fixed to the thickener body, and the output shaft of the lifting driving cylinder is fixedly connected with the connecting plate.

[0011] In some embodiments, the stirring mechanism comprises a stirring shaft, stirring blades and a stirring motor, the stirring shaft is rotatably arranged in the thickener body, the stirring blades are fixed to the stirring shaft, and the stirring motor is connected with the stirring shaft and is used for driving the stirring shaft to rotate.

[0012] In some embodiments, the stirring mechanism further comprises a fixed sleeve, the fixed sleeve is fixed to the inner top surface of the thickener body and is sleeved on the stirring shaft, and the fixed sleeve is in clearance fit with the stirring shaft.

[0013] In some embodiments, the supernatant discharge mechanism further comprises a baffle, the baffle is fixed below the lifting pipe and is located between the connecting hose and the stirring blades.

[0014] In some embodiments, the thickener body has a feed ore pulp inlet at a middle height of the sidewall, and the laterite nickel ore pulp thickener further comprises a feed ore pulp pipe, a first liquid level detection member and a feed ore pulp valve, one end of the feed ore pulp pipe is in communication with the feed ore pulp inlet, the other end of the feed ore pulp pipe is used for feeding ore pulp, the height of the other end of the feed ore pulp pipe is higher than the top end of the thickener body, the first liquid level detection member is arranged in the thickener body and is used for detecting the liquid level of the ore pulp in the thickener body, and the feed ore pulp valve is arranged on the feed ore pulp pipe and is used for controlling the ore pulp feeding flow in the feed ore pulp pipe according to the liquid level detected by the first liquid level detection member, so that the ore pulp height in the thickener body is always kept within a preset range.

[0015] In some embodiments, the lower end of the discharge port is further fixed with a discharge tee, the first end of the discharge tee is in communication with the discharge port, the second end of the discharge tee is connected with a discharge pipe, the third end of the discharge tee is connected with a detection pipe, the discharge pipe is provided with a discharge valve, and the detection pipe is provided with a detection valve; the laterite nickel ore pulp thickener further comprises a discharge ore pulp concentration detection mechanism, the discharge ore pulp concentration detection mechanism comprises a turnover motor, a mounting plate, an electronic balance, a detection cylinder, a second liquid level detection member and a collection tank, the housing of the turnover motor is fixed to the discharge pipe, the output shaft of the turnover motor is fixedly connected with the mounting plate, the fixed end of the electronic balance is fixed to the mounting plate, the detection cylinder is fixed to the detection end of the electronic balance and is used for being in communication with the detection pipe, the second liquid level detection member is arranged in the detection cylinder and is used for detecting the liquid level of the ore pulp in the detection cylinder, and the collection tank is arranged below the detection cylinder.

[0016] In some embodiments, the laterite nickel ore pulp thickener further comprises a support, and the thickener body is fixed to the support.

[0017] In some embodiments, the supernatant discharge mechanism further comprises a discharge pipe, one end of the discharge pipe is in communication with the drain port.

[0018] Compared with the prior art, the beneficial effects of the technical scheme provided by the present application are: in use, the laterite nickel ore slurry is passed into the containing cavity of the thickener body, under the action of gravity, the slurry in the thickener body forms a concentration difference in depth, the concentration of the slurry at the lower part is large, the concentration of the slurry at the middle part is small, and the upper part is supernatant, the turbidity of the slurry at each depth is detected through each turbidity detection piece, thereby establishing the relationship between the turbidity of the slurry and the depth, thereby obtaining the height corresponding to the slurry of the preset turbidity, then the height of the lifting pipe is controlled through the lifting drive piece, so that the height of the water inlet of the lifting pipe is equal to the height corresponding to the slurry of the preset turbidity, then the water inlet valve is opened, so that the supernatant of the preset turbidity enters the lifting pipe, and then enters the drain outlet through the connecting hose and is discharged. The height of the lifting pipe is controlled through the lifting drive piece, so that the height of the water inlet of the lifting pipe is equal to the height corresponding to the slurry of the preset turbidity, so that the concentration of the discharged supernatant can be prevented from being too high, which causes waste of the slurry, and the technical problem that the discharge speed of the supernatant is low due to the high supernatant discharge outlet, which affects the thickening efficiency of the slurry can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of an embodiment of the laterite nickel ore slurry thickener provided by the present application;

[0020] Figure 2 is Figure 1 is a partial enlarged view of region A in

[0021] Figure 3 is Figure 1 is a partial enlarged view of region B in

[0022] Figure 4 is Figure 1 is a structural schematic view of the thickener body and the supernatant discharge mechanism in

[0023] Figure 5 is Figure 1 is a structural schematic view of the discharge slurry concentration detection mechanism in

[0024] In the figure: 1 - thickener body, 11 - discharge port, 12 - drainage port, 13 - ore pulp inlet, 14 - first liquid level detection piece, 15 - discharge tee, 16 - discharge pipe, 17 - detection pipe, 18 - discharge valve, 19 - detection valve, 2 - turbidity detection piece, 21 - fixed block, 22 - laser emitter, 23 - laser receiver, 3 - supernatant discharge mechanism, 31 - lifting pipe, 311 - water inlet, 312 - water inlet valve, 32 - connecting hose, 33 - lifting drive piece, 331 - vertical rod, 332 - connecting plate, 333 - lifting drive cylinder, 34 - discharge pipe, 35 - baffle, 4 - stirring mechanism, 41 - stirring shaft, 42 - stirring blade, 43 - stirring motor, 44 - fixed sleeve, 5 - ore pulp pipe, 51 - ore pulp valve, 6 - discharge ore pulp concentration detection mechanism, 61 - overturning motor, 62 - mounting plate, 63 - electronic balance, 64 - detection cylinder, 65 - second liquid level detection piece, 66 - collection tank, 7 - support. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application will be described in detail below with reference to the drawings, which form a part of this application. The drawings and the associated description are directed to illustrate the principles of the present application, and not to limit the scope of the present application, together with the embodiments of the present application.

[0026] Please refer to Figures 1-4 The present application provides a laterite nickel ore pulp thickener, which comprises a thickener body 1, a plurality of turbidity detection pieces 2 and a supernatant discharge mechanism 3.

[0027] The thickener body 1 has a tapered accommodating cavity, the accommodating cavity is used for introducing laterite nickel ore pulp, the bottom end of the thickener body 1 is provided with a discharge port 11, and the lower end of the thickener body 1 is provided with a drainage port 12.

[0028] Each of the turbidity detection pieces 2 is arranged on the inner side wall of the accommodating cavity in a vertical direction in sequence and is used for detecting the turbidity of the ore pulp at different depths in the accommodating cavity.

[0029] The supernatant discharge mechanism 3 comprises a lifting pipe 31, a connecting hose 32 and a lifting driving member 33, the lifting pipe 31 is arranged in the accommodating cavity and is movable up and down, the upper end of the lifting pipe 31 is sealed, a water inlet 311 is formed in the side wall of the lifting pipe 31, a water inlet valve 312 is arranged on the water inlet 311, the lower end of the lifting pipe 31 is communicated with one end of the connecting hose 32, the other end of the connecting hose 32 is sealingly connected with the drain port 12, because the other end of the connecting hose 32 is sealingly connected with the drain port 12, the drain port 12 is not communicated with the accommodating cavity of the thickener body 1, the ore pulp in the accommodating cavity cannot be directly discharged from the drain port 12, but can enter the lifting pipe 31 through the water inlet 311, then enter the connecting hose 32 from the lifting pipe 31, and then be discharged from the drain port 12, the lifting driving member 33 is used for controlling the height of the lifting pipe 31 according to the turbidity of the ore pulp at different depths in the accommodating cavity measured by the turbidity detecting member 2, so that the turbidity of the supernatant entering the water inlet 311 is within a preset range. It should be understood that although only one supernatant discharge mechanism 3 is shown in the drawings of the present application, in actual use, multiple supernatant discharge mechanisms 3 can be provided to speed up the discharge efficiency of the supernatant.

[0030] In use, the laterite nickel ore pulp (hereinafter referred to as ore pulp) is introduced into the accommodating cavity of the thickener body 1, under the action of gravity, the ore pulp in the thickener body 1 forms a concentration difference in depth, the concentration of the lower ore pulp is high, the concentration of the middle ore pulp is low, and the upper part is supernatant (i.e. ore pulp with very low concentration), the turbidity of the ore pulp at different depths is detected by each turbidity detecting member 2, thereby establishing the relationship between the turbidity of the ore pulp and the depth, thereby obtaining the height corresponding to the ore pulp with a preset turbidity, then the height of the lifting pipe 31 is controlled by the lifting driving member 33, so that the height of the water inlet 311 of the lifting pipe 31 is equal to the height corresponding to the ore pulp with a preset turbidity, then the water inlet valve 312 is opened, so that the supernatant with a preset turbidity enters the lifting pipe 31, then enters the drain port 12 through the connecting hose 32 and is discharged. The height of the lifting pipe 31 is controlled by the lifting driving member 33, so that the height of the water inlet 311 of the lifting pipe 31 is equal to the height corresponding to the ore pulp with a preset turbidity, thereby preventing the concentration of the discharged supernatant from being too high, and avoiding the problem that the supernatant discharge speed is low due to the high supernatant discharge port, which affects the thickening efficiency of the ore pulp.

[0031] It should be understood that the turbidity of the ore pulp is related to the concentration of the ore pulp, when the concentration of the ore pulp is small, the greater the concentration of the ore pulp, the greater the turbidity of the ore pulp, however, when the concentration of the ore pulp increases to a certain extent, the trend of the increase of the turbidity of the ore pulp will decrease, therefore, the detection of the turbidity of the ore pulp is only applicable to the case where the concentration of the ore pulp is small, in the present application, since each turbidity detection member 2 is used for detecting the turbidity of the supernatant at different depths, the concentration of the ore pulp of the supernatant is low, therefore, the concentration of the ore pulp can be reflected by detecting the turbidity of the ore pulp, and the concentration of the ore pulp of the discharged supernatant can be ensured within the preset range.

[0032] In order to realize the function of the turbidity detection member 2, please refer to Figure 1 and Figure 2 In a preferred embodiment, the turbidity detection member 2 comprises a fixing block 21, a laser emitter 22 and a laser receiver 23, the fixing block 21 is fixed to the inner side wall of the accommodating cavity, the laser emitter 22 and the laser receiver 23 are both fixed to the fixing block 21, the laser emitter 22 is used for emitting a laser beam with a preset light intensity to the laser receiver 23, the laser receiver 23 is used for receiving the laser beam and detecting the light intensity of the received laser beam, so as to obtain the light intensity attenuation rate of the laser beam, and then the turbidity of the ore pulp is obtained through the light intensity attenuation rate of the laser beam. The principle is that the greater the turbidity of the ore pulp, the higher the light intensity attenuation rate of the laser beam when the laser beam propagates the same length in the ore pulp, so that the turbidity of the ore pulp can be obtained according to the light intensity attenuation rate of the laser beam.

[0033] In order to facilitate the discharge of the supernatant, please refer to Figure 1 In a preferred embodiment, the supernatant discharge mechanism 3 further comprises a discharge pipe 34, one end of the discharge pipe 34 is in communication with the drain port 12.

[0034] In order to realize the function of the lifting drive member 33, please refer to Figure 1 and Figure 4 In a preferred embodiment, the lifting drive member 33 comprises a vertical rod 331, a connecting plate 332 and a lifting drive cylinder 333, one end of the vertical rod 331 is fixedly connected with the lifting pipe 31, the other end of the vertical rod 331 is fixedly connected with the connecting plate 332, the cylinder body of the lifting drive cylinder 333 is fixed to the thickener body 1, the output shaft of the lifting drive cylinder 333 is fixedly connected with the connecting plate 332, in use, the vertical rod 331 is driven by the lifting drive cylinder 333 to move up and down, so as to drive the lifting pipe 31 to move up and down.

[0035] In order to improve the thickening efficiency, please refer to Figure 1In a preferred embodiment, the laterite nickel ore slurry thickener further comprises a stirring mechanism 4, the stirring mechanism 4 comprises a stirring shaft 41, stirring blades 42 and a stirring motor 43, the stirring shaft 41 is rotatably arranged in the thickener body 1, the stirring blades 42 are fixed on the stirring shaft 41, and the stirring motor 43 is connected with the stirring shaft 41 and used to drive the stirring shaft 41 to rotate. In use, the stirring mechanism 4 can improve the uniformity of the slurry at different positions and prevent uneven accumulation of the slurry to cause poor thickening effect.

[0036] In order to prevent the stirring shaft 41 from disturbing the supernatant when rotating, please refer to Figure 1 and Figure 3 In a preferred embodiment, the stirring mechanism 4 further comprises a fixed sleeve 44, the fixed sleeve 44 is fixed to the top surface of the thickener body 1 and sleeved on the stirring shaft 41, and the fixed sleeve 44 is in clearance fit with the stirring shaft 41. By providing the fixed sleeve 44, the stirring shaft 41 will not disturb the supernatant when rotating, thereby facilitating the settlement of suspended mineral particles in the supernatant.

[0037] In order to prevent the connecting hose 32 from moving horizontally and being damaged by contacting the stirring blades 42 when the lifting pipe 31 is descending, please refer to Figure 1 and Figure 4 In a preferred embodiment, the supernatant discharge mechanism 3 further comprises a baffle 35, the baffle 35 is fixed below the lifting pipe 31 and located between the connecting hose 32 and the stirring blades 42 to separate them. The baffle 35 is provided because when the lifting pipe 31 is descending, the connecting hose 32 will bend and move horizontally at the same time, which will cause the risk of collision with the stirring blades 42. Therefore, by providing the baffle 35 to separate them, the situation that the connecting hose 32 is cut by the stirring blades 42 can be prevented.

[0038] In order to facilitate automatic feeding of the slurry, please refer to Figure 1 and Figure 4In a preferred embodiment, the slurry inlet 13 is arranged at the middle height of the sidewall of the thickener body 1, and the laterite nickel ore slurry thickener further comprises a slurry inlet pipe 5, a first liquid level detecting member 14 and a slurry inlet valve 51. One end of the slurry inlet pipe 5 is communicated with the slurry inlet 13, and the other end of the slurry inlet pipe 5 is used for feeding the slurry, and the height of the other end of the slurry inlet pipe 5 is higher than the top end of the thickener body 1. The first liquid level detecting member 14 is arranged in the thickener body 1 and is used for detecting the liquid level of the slurry in the thickener body 1. The slurry inlet valve 51 is arranged on the slurry inlet pipe 5 and is used for controlling the feeding flow of the slurry in the slurry inlet pipe 5 according to the liquid level detected by the first liquid level detecting member 14, so that the height of the slurry in the thickener body 1 is always kept within the preset range. It should be noted that the slurry inlet 13 is arranged at the middle height of the sidewall of the thickener body 1 instead of being arranged at the top end as in the conventional arrangement, so as to avoid the disturbance to the supernatant when the slurry is fed through the slurry inlet 13. If the slurry is directly fed from the top end, the supernatant will be turbid when the slurry is fed. In the present application, the slurry inlet 13 is arranged at the middle height of the sidewall of the thickener body 1, so that the slurry can be directly fed to the middle and lower part of the thickener, thereby reducing the disturbance to the supernatant. In order to avoid the backflow of the slurry in the thickener to the slurry inlet pipe 5, the inlet of the slurry inlet pipe 5 should be higher than the top end of the thickener body 1.

[0039] In order to conveniently control the concentration of the discharged thickened slurry, please refer to Figure 1 and Figure 5 In a preferred embodiment, the lower end of the discharge port 11 is further fixed with a discharge three-way pipe 15, the first end of the discharge three-way pipe 15 is communicated with the discharge port 11, the second end of the discharge three-way pipe 15 is connected with a discharge pipe 16, the third end of the discharge three-way pipe 15 is connected with a detection pipe 17, the discharge pipe 16 is provided with a discharge valve 18, and the detection pipe 17 is provided with a detection valve 19. The laterite nickel ore slurry thickener further comprises a discharge slurry concentration detecting mechanism 6, which comprises a turnover motor 61, a mounting plate 62, an electronic balance 63, a detection cylinder 64, a second liquid level detecting member 65 and a collection tank 66. The housing of the turnover motor 61 is fixed to the discharge pipe 16, the output shaft of the turnover motor 61 is fixedly connected with the mounting plate 62, the fixed end of the electronic balance 63 is fixed to the mounting plate 62, the detection cylinder 64 is fixed to the detection end of the electronic balance 63 and is used for being communicated with the detection pipe 17, the second liquid level detecting member 65 is arranged in the detection cylinder 64 and is used for detecting the liquid level of the slurry in the detection cylinder 64, and the collection tank 66 is arranged below the detection cylinder 64.

[0040] Please continue to refer to Figure 1 andFigure 5 In use, first, the discharge valve 18 is closed and the detection valve 19 is opened, at this time, the slurry discharged from the discharge port 11 enters the detection tube 17 and then flows into the detection cylinder 64, the liquid level of the slurry in the detection cylinder 64 is detected by the second liquid level detection piece 65, when reaching the preset height, the discharge valve 18 is closed, at this time, the weight of the slurry in the detection cylinder 64 is detected by the electronic balance 63, then the volume of the slurry is calculated according to the liquid level of the slurry, so as to obtain the density of the slurry, then the concentration of the slurry is obtained according to the density of the slurry, when the concentration of the slurry is lower than the preset concentration, the discharge valve 18 continues to be closed, and the slurry is further concentrated, when the concentration of the slurry exceeds the preset concentration, the discharge valve 18 is opened, so as to ensure that the concentration of the output slurry remains stable, in use, usually sampling once every ten minutes, after each detection, the detection cylinder 64 is rotated 180° by the turnover motor 61, so that the detection cylinder 64 faces downward, so that the slurry in the detection cylinder 64 falls into the collecting groove 66 below, when the collecting groove 66 is full, the slurry in the collecting groove 66 is poured into the thickener body 1 by manual or mechanical mode to avoid waste.

[0041] It should be pointed out that, since the concentration of the slurry discharged from the discharge port 11 is very high, the concentration of the slurry cannot be judged by detecting the turbidity of the slurry, therefore, the special designed discharge slurry concentration detection mechanism is adopted to detect the density of the slurry, so as to obtain the concentration of the slurry.

[0042] In order to facilitate the fixation of the thickener body 1, please refer to Figure 1 In a preferred embodiment, the laterite nickel ore slurry thickener further comprises a support 7, and the thickener body 1 is fixed to the support 7.

[0043] In order to better understand the present application, the following will be combined with specific examples Figures 1-5The working process of the laterite nickel ore slurry thickener provided by the present application is described in detail as follows: in use, the laterite nickel ore slurry is introduced into the accommodating cavity of the thickener body 1, under the action of gravity, the slurry in the thickener body 1 forms a concentration difference in depth, the concentration of the slurry at the lower part is high, the concentration of the slurry at the middle part is low, and the upper part is supernatant, the turbidity of the slurry at each depth is detected by each turbidity detection piece 2, thereby establishing the relationship between the turbidity of the slurry and the depth, and obtaining the height corresponding to the slurry with the preset turbidity, then the height of the lifting pipe 31 is controlled by the lifting driving piece 33, so that the height of the water inlet 311 of the lifting pipe 31 is equal to the height corresponding to the slurry with the preset turbidity, then the water inlet valve 312 is opened, so that the supernatant with the preset turbidity enters the lifting pipe 31, and then enters the drain outlet 12 through the connecting hose 32 and is discharged. The height of the lifting pipe 31 is controlled by the lifting driving piece 33, so that the height of the water inlet 311 of the lifting pipe 31 is equal to the height corresponding to the slurry with the preset turbidity, thereby preventing the concentration of the discharged supernatant from being too high, and avoiding the technical problem that the discharge speed of the supernatant is low due to the high supernatant discharge outlet, which affects the thickening efficiency of the slurry.

[0044] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A thickener for laterite nickel ore slurry, characterized in that, It includes the thickener body, several turbidity detection devices, and a supernatant discharge mechanism; The thickener body has a conical receiving cavity for introducing laterite nickel ore slurry into the receiving cavity. The bottom end of the thickener body has a discharge port, and the lower end of the thickener body has a drain port. Each of the turbidity detection elements is arranged vertically on the inner wall of the receiving cavity and is used to detect the turbidity of the slurry at different depths within the receiving cavity; The supernatant discharge mechanism includes a lifting pipe, a connecting hose, and a lifting drive. The lifting pipe is disposed within the receiving cavity and can move up and down. The upper end of the lifting pipe is sealed, and an inlet is provided on the side wall of the lifting pipe. An inlet valve is provided on the inlet. The lower end of the lifting pipe is connected to one end of the connecting hose, and the other end of the connecting hose is sealed to the drain outlet. The lifting drive is used to control the height of the lifting pipe according to the turbidity of the slurry at different depths in the receiving cavity measured by the turbidity detector, so that the turbidity of the supernatant entering through the inlet is within a preset range. The laterite nickel ore slurry thickener also includes a stirring mechanism, which includes a stirring shaft, stirring blades and a stirring motor. The stirring shaft is rotatably disposed within the thickener body, the stirring blades are fixed on the stirring shaft, and the stirring motor is connected to the stirring shaft and is used to drive the stirring shaft to rotate. The stirring mechanism also includes a fixed sleeve, which is fixed to the top surface of the thickener body and sleeved on the stirring shaft, with the fixed sleeve and the stirring shaft having a clearance fit. A slurry inlet is provided at the middle height of the side wall of the thickener body. The laterite nickel ore slurry thickener also includes a slurry inlet pipe, a first liquid level detection element, and a slurry inlet valve. One end of the slurry inlet pipe is connected to the slurry inlet, and the other end of the slurry inlet pipe is used to introduce slurry. The height of the other end of the slurry inlet pipe is higher than the top of the thickener body. The first liquid level detection element is set in the thickener body and is used to detect the liquid level of the slurry in the thickener body. The slurry inlet valve is set on the slurry inlet pipe and is used to control the flow rate of the slurry in the slurry inlet pipe according to the liquid level detected by the first liquid level detection element, so that the slurry height in the thickener body is always kept within a preset range.

2. The laterite nickel ore slurry thickener according to claim 1, characterized in that, The turbidity detection device includes a fixed block, a laser emitter, and a laser receiver. The fixed block is fixed to the inner wall of the receiving cavity. The laser emitter and the laser receiver are both fixed to the fixed block. The laser emitter is used to emit a laser beam of preset intensity to the laser receiver. The laser receiver is used to receive the laser beam and detect the intensity of the received laser beam.

3. The laterite nickel ore slurry thickener according to claim 1, characterized in that, The lifting drive component includes a vertical rod, a connecting plate, and a lifting drive cylinder. One end of the vertical rod is fixedly connected to the lifting pipe, and the other end of the vertical rod is fixedly connected to the connecting plate. The cylinder body of the lifting drive cylinder is fixed to the thickener body, and the output shaft of the lifting drive cylinder is fixedly connected to the connecting plate.

4. The laterite nickel ore slurry thickener according to claim 1, characterized in that, The supernatant discharge mechanism also includes a baffle, which is fixed below the lifting pipe and located between the connecting hose and the stirring blade.

5. The laterite nickel ore slurry thickener according to claim 1, characterized in that, The lower end of the discharge port is also fixed with a discharge tee. The first end of the discharge tee is connected to the discharge port, the second end of the discharge tee is connected to a discharge pipe, and the third end of the discharge tee is connected to a detection pipe. A discharge valve is installed on the discharge pipe, and a detection valve is installed on the detection pipe. The laterite nickel ore slurry thickener also includes a discharge slurry concentration detection mechanism. The discharge slurry concentration detection mechanism includes a tilting motor, a mounting plate, an electronic balance, a detection cylinder, a second liquid level detection element, and a collection tank. The housing of the tilting motor is fixed to the discharge pipe, the output shaft of the tilting motor is fixedly connected to the mounting plate, the fixed end of the electronic balance is fixed to the mounting plate, the detection cylinder is fixed to the detection end of the electronic balance and is used to communicate with the detection pipe, the second liquid level detection element is set inside the detection cylinder and is used to detect the liquid level height of the slurry inside the detection cylinder, and the collection tank is set below the detection cylinder.

6. The laterite nickel ore slurry thickener according to claim 1, characterized in that, It also includes a support frame, to which the thickener body is fixed.

7. The laterite nickel ore slurry thickener according to claim 1, characterized in that, The supernatant discharge mechanism also includes a discharge pipe, one end of which is connected to the drain outlet.

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