Bauxite flotation device

Abstract

The invention relates to the technical field of bauxite flotation, and discloses a bauxite flotation device which comprises a base, a telescopic rod is installed at the top of the base, a spring is installed on the outer ring of the telescopic rod, and a workbench is fixedly connected to the top of the spring; the vibration mechanism is mounted at the top of the base and used for vibration treatment of the workbench; and the working mechanism is installed on the top of the workbench and used for the normal flotation process. Through cooperation of the telescopic rod arranged at the bottom of the workbench and the spring and cooperation of the vibration mechanism composed of the driving motor, the cam and the cam base, high-frequency micro-amplitude vibration can be actively generated in the flotation process and after operation is finished, mineralized foam or residual chemicals attached to the inner wall of the workbench are effectively stripped through inertia force, and the flotation efficiency is improved. The wall sticking phenomenon is obviously reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bauxite flotation, and particularly relates to a bauxite flotation device. BACKGROUND

[0002] In the use process of the flotation machine, workers add ground ore, water and necessary reagents, the ore is adjusted into ore slurry through a stirring tank, and then the ore slurry is injected into an ore slurry tank, and air is introduced into the ore slurry, so that a large number of air bubbles are formed, some mineral particles that are not easy to be wetted by water are attached to the air bubbles, and then the mineral particles and the air bubbles float to the surface of the ore slurry to form a mineralized bubble layer, and other mineral particles that are easy to be wetted by water are not attached to the air bubbles, but remain in the ore slurry, the mineralized bubbles containing specific minerals are discharged, and the purpose of ore dressing is achieved.

[0003] According to the search, the utility model patent with the Chinese patent number CN212328616U discloses a bauxite flotation device, which comprises a box body, a feeding port is arranged on the left side of the box body, a reagent adding device is arranged on the upper side of the box body, a tailing outlet is arranged at the bottom of the box body, a stirring shaft is arranged in the inner cavity of the box body, a stirring paddle and an air injection pipe are arranged at the lower end of the stirring shaft, the stirring shaft is a cavity, the stirring shaft is communicated with the air injection pipe, a plurality of air injection holes are arranged on the surface of the air injection pipe, a straight pipe is fixed to the upper end of the stirring shaft, the straight pipe is connected with a driving motor through a belt, the straight pipe is further connected with an air inlet pipe in a movable mode, the air inlet pipe is connected with an air charging device through a pipeline, a gas blowing pipe is arranged on the upper side of the box body, and the gas blowing pipe is connected with a gas blowing device.

[0004] According to the search, the utility model patent with the Chinese patent number CN210545665U discloses a flotation mineralization device for bauxite waste residue ore dressing, which comprises a main body module and a rotating module; the main body module comprises a vertical hollow cylinder with an open top, a foam storage part for collecting the foam in the atomization chamber is connected to the upper part of the cylinder, a feeding pipeline in the atomization chamber is connected with a vertical downward atomization nozzle at the bottom end, a horizontal iron wire mesh is fixed to the inner side wall of the cylinder at the lower part of the atomization chamber, a motor support and a motor are fixed to the outer side wall of the cylinder bottom at opposite positions, the rotating module comprises a horizontal rotating disc, a spherical top protruding upward and in a spherical shape is fixed to the top surface of the rotating disc, the spherical top is a certain distance away from the edge of the rotating disc, and a flow hole penetrating through the rotating disc is vertically formed between the edge of the spherical top and the edge of the rotating disc.

[0005] In the above patent, emphasis is placed on improving the mixing effect of ore pulp and reagent by means of stirring, air injection or rotating disc, etc., but after the device is completed, the raw material is generally adhered to the wall. Since the box body is a rigid fixed structure, the stirring shaft, air injection pipe and stirring paddle are rigidly connected to the box body through the bearing seat or flange, so when the ore pulp is injected, stirred and aerated, the mineralized foam or reagent with high viscosity is easily attached to the inner wall to form stubborn residues. Welding or bolt rigid fixation is generally used between the tank body and the rack, there is no excitation motor, and there is no elastic damping element such as rubber pad and spring support, so that the tank body cannot produce high-frequency micro-vibration, and the attached material cannot be stripped by using inertial force. Based on this, the bauxite flotation device is designed to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a bauxite flotation device that solves the problem of raw material sticking to the wall in the background art.

[0007] In order to solve the above technical problems, the present application provides the following technical scheme: A bauxite flotation device, comprising: A base, a telescopic rod is installed on the top of the base, a spring is installed on the outer ring of the telescopic rod, and a workbench is fixedly connected to the top of the spring; A vibration mechanism is installed on the top of the base for vibration treatment of the workbench, the vibration mechanism comprises a working frame installed on one side of the base, a drive motor is fixedly installed on the bottom of the working frame, a drive shaft is fixedly connected to the output shaft of the drive motor, a cam is installed on the outer ring of the drive shaft for periodic lifting vibration of the workbench; A working mechanism is installed on the top of the workbench and is used for normal process of flotation, the working mechanism comprises a limiting plate fixedly connected to the top of the workbench, a limiting hole penetrating through the top and bottom of the limiting plate is formed, an air injection pipe is rotatably connected in the inner cavity of the limiting hole, a spray head is installed on the bottom of the air injection pipe for releasing airflow into the ore pulp, and a stirring blade is also installed on the bottom of the air injection pipe, the stirring blade is distributed in a plurality of circumferential arrays for forming tangential flow and accelerating airflow flow in the ore pulp.

[0008] Preferably, the vibration mechanism further comprises a limiting seat installed on the bottom of the working frame, the drive shaft penetrates through the limiting seat and extends into the inner cavity of the base, the bottom of the workbench is fixedly connected with a cam seat, a cam groove is formed in the bottom of the cam seat for accommodating the cam and guiding its rotation, and the vertical vibration of the workbench is converted.

[0009] Preferably, the working mechanism comprises a support plate fixedly connected to the top of the workbench, a stirring motor is installed on the top of the support plate, a driving shaft is installed at the bottom of the output shaft of the stirring motor, a driving gear is installed at the bottom of the driving shaft, a driven gear is installed on the outer ring of the air jet pipe, and the driving gear and the driven gear are meshed with each other to drive the rotary motion of the air jet pipe.

[0010] According to the above technical scheme, after the bauxite flotation device is started, the driving motor is started, the output shaft drives the driving shaft to rotate, and the cam installed on the driving shaft rotates; the cam continuously rolls in the cam groove, converts the rotary motion into the periodic lifting motion of the workbench, and the telescopic rod and the spring jointly form the elastic support, so that the workbench obtains high-frequency micro-amplitude vibration.

[0011] The stirring motor is synchronously operated, the driving shaft drives the driving gear to rotate, the driving gear is meshed with the driven gear, and the air jet pipe is driven to rotate around its own axis; the stirring blade at the lower end of the air jet pipe forms a tangential flow field in the ore pulp, and the external gas source enters the air jet pipe through the hose and uniformly releases bubbles into the ore pulp through the nozzle. After the ore pulp is adjusted, it is injected into the inner cavity of the workbench, and under the synergistic action of the bubbles and the stirring blade, the target mineral is attached to the bubbles to form a mineralized foam layer.

[0012] Preferably, the working mechanism further comprises a hose installed on the top of the air jet pipe, the hose penetrates through the workbench and extends to the back of the workbench, is used for connecting the external gas source, and the inner cavity of the workbench is further provided with a lifting mechanism.

[0013] Preferably, the lifting mechanism comprises two connection tables fixedly connected to the top of the workbench on both sides, through holes penetrating through the top and bottom ends of the connection tables are formed on the connection tables on both sides, lifting threaded rods are rotatably connected in the inner cavities of the through holes on both sides, lifting plates are threadedly connected to the outer rings of the lifting threaded rods on both sides, filter holes are formed in the inner cavities of the lifting plates, the filter holes are arranged in multiple matrix arrays, are used for separating the mineralized foam and the tailings, and a driving mechanism is further installed on one side of the workbench.

[0014] Preferably, the driving mechanism further comprises a lifting seat installed on one side of the workbench, a lifting motor is installed on the top of the lifting seat, a driving bevel gear is fixedly connected to the output shaft of the lifting motor, a driven bevel gear is installed on the outer ring of the lifting threaded rod on the left side, and the driving bevel gear and the driven bevel gear are meshed with each other to drive the rotary motion of the lifting threaded rod.

[0015] Preferably, the lifting plate is provided with a circular hole penetrating through the top and bottom ends thereof, is used for placing the air jet pipe, limit rods are installed on the two sides of the workbench, are used for limiting the lifting of the lifting plate, synchronous wheels are further installed on the top of the lifting threaded rods, the synchronous wheels are connected through a belt, and the synchronous wheels ensure the synchronous rotation of the lifting threaded rods on both sides.

[0016] According to the technical scheme, the lifting motor is started according to the process time sequence, the driving bevel gear drives the driven bevel gear and drives the left lifting screw rod to rotate, the synchronous wheel and the belt make the right lifting screw rod rotate synchronously, the lifting plate vertically rises along the limiting rod, the filter hole lifts the mineralized froth layer to the height of the discharge pipe, and the froth is discharged from the discharge pipe; the mineral particles and the tailings that do not reach the flotation particle size pass through the filter hole and are deposited at the bottom of the workbench, and finally are discharged through the excess material pipe, so that a flotation operation is completed. When the device is stopped, the lifting plate is reset, the driving motor continues to operate for a short time, and the workbench shakes under the action of inertia to shake off the residual ore slurry attached to the inner wall, the residual ore slurry is discharged through the excess material pipe, and self-cleaning is realized.

[0017] Preferably, a monitoring mechanism is installed in the inner cavity of the workbench. The monitoring mechanism comprises a stepping motor installed at the top of the inner cavity of the workbench, a double-thread screw fixedly connected to the output shaft of the stepping motor, a moving block threadedly connected to the outer ring of the double-thread screw, a rotating plate hingedly connected to the bottom of the moving block, the rotating plate being X-shaped and being rotatably connected through a pin shaft between the rotating plates, a lifting block hingedly connected to the bottom of the rotating plate, and a work plate slidably connected to the bottom of the lifting block, for lifting the work plate.

[0018] Preferably, the monitoring mechanism comprises a camera installed at the bottom of the work plate, for real-time monitoring of the flotation process, a limiting groove is formed in the inner wall of the work plate, and a limiting shaft is installed on the outer ring of the lifting block and located in the inner cavity of the limiting groove, for realizing stable lifting of the work plate.

[0019] According to the technical scheme, after the stepping motor is started, the double-thread screw rotates, and the moving block reciprocally moves along the screw axis; the moving block drives the lifting block to move through the rotating plate, and the hinged structure between the rotating plate and the lifting block enables the work plate to have a swing degree of freedom in a two-dimensional plane. The limiting shaft slides in the limiting groove, mechanically limits the swing amplitude of the work plate, and ensures that the camera always points to the monitoring area in the inner cavity of the workbench. The camera collects image information of the flotation process in real time and outputs the image information to an external monitoring terminal, an operator judges the thickness, color and fluidity of the mineralized froth layer according to the image feedback, adjusts the rotating speed of the stirring motor, the air inlet amount or the height of the lifting plate in a timely manner, and optimizes the flotation index. When a batch operation needs to be cleaned, the camera scans the inner wall of the workbench again to confirm that the residual material has completely fallen off, and ensures the process consistency of the next batch operation.

[0020] Preferably, a discharge pipe is installed on the back of the workbench for discharging the mineralized froth; and an excess material pipe is installed at the bottom of the workbench for discharging the tailings and residual ore slurry.

[0021] Compared with the prior art, the present application has the beneficial effects that: 1、The present application, by deeply coupling the elastic support system with the cam type high-frequency micro-amplitude vibration mechanism, constructs a flotation and cleaning integrated operation mode. Compared with the traditional device relying on manual shutdown scraping or high-pressure flushing mode, the present application can automatically start the vibration cleaning program after each flotation cycle ends, effectively strips the mineralized foam, residual reagent and fine particles adhering to the inner wall by using inertial vibration, avoids the pollution of the residues to the next batch of ore pulp, and significantly improves the process consistency between batches; the elastic support composed of springs and telescopic rods not only plays a buffering and damping role, but also forms a resonance amplification effect during vibration, so that the vibration energy is more concentratedly transmitted to the inner wall of the workbench, improving the cleaning efficiency while reducing the energy consumption.

[0022] 2、The present application organically integrates the vibration cleaning, stirring and aeration, foam separation and intelligent monitoring function modules in the same device, and the mechanisms are highly coordinated through mechanical linkage and electrical control. The filter plate of the lifting mechanism not only bears the function of foam separation, but also serves as a “scraper” to assist the residual material to fall off during the vibration cleaning stage; the camera of the monitoring mechanism is used for state monitoring during the flotation stage and cleaning effect confirmation during the cleaning stage, realizing one machine with multiple functions, reducing the maintenance complexity and operation cost, and being especially suitable for small and medium-sized ore dressing plants or mobile flotation operation scenes.

[0023] 3、The present application, by real-time image acquisition of the thickness, color, bubble size and fluidity of the mineralized foam layer through the camera, and combining with the image processing algorithm of the external terminal, the operator can remotely identify the change trend of the flotation state, timely adjust the key parameters such as stirring motor speed, gas flow and lifting plate height, realize closed-loop control, and the intelligent regulation and control mode based on visual feedback not only improves the flotation recovery rate and concentrate grade, but also significantly reduces the risk of reagent waste or flotation failure caused by improper parameter setting, and is especially suitable for complex working conditions with large fluctuations in ore properties. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the present application; Figure 2 is another direction structural schematic view of the present application; Figure 3 is a structural schematic view of the working frame of the present application; Figure 4 is another direction structural schematic view of the working frame of the present application; Figure 5 is an internal structural sectional view of the working frame of the present application; Figure 6 is an enlarged view of A of the present application; Figure 5 ​Figure 7 is a structural schematic view of the workbench of the present application in another direction; Figure 8 is a structural schematic view of the workbench of the present application in another direction; Figure 9 is a structural schematic view of the workbench of the present application in another direction; Figure 10 is a sectional view of the internal structure of the workbench of the present application; Figure 11 is a sectional view of the internal structure of the workbench of the present application in another position.

[0025] Wherein: 1, vibration mechanism; 2, working mechanism; 3, lifting mechanism; 4, driving mechanism; 5, monitoring mechanism; 101, base; 102, telescopic rod; 103, spring; 104, workbench; 105, workbench; 106, driving motor; 107, driving shaft; 108, cam; 109, limiting seat; 110, cam seat; 111, cam groove; 112, discharge pipe; 113, excess material pipe; 201, support plate; 202, stirring motor; 203, driving shaft; 204, driving gear; 205, air jet pipe; 206, driven gear; 207, hose; 208, nozzle; 209, stirring blade; 210, limiting plate; 211, limiting hole; 301, lifting threaded rod; 302, lifting plate; 303, filter hole; 304, round hole; 305, limiting rod; 306, synchronous wheel; 307, belt; 308, connecting table; 309, through hole; 401, lifting seat; 402, lifting motor; 403, driving bevel gear; 404, driven bevel gear; 501, stepping motor; 502, bidirectional screw; 503, moving block; 504, rotating plate; 505, lifting block; 506, work plate; 507, camera; 508, limiting groove; 509, limiting shaft. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment 1;

[0028] Please refer to Figures 1-3 , Figure 7 and Figure 11 An aluminum ore flotation device comprises: The base 101, the top of the base 101 is provided with a telescopic rod 102, the outer ring of the telescopic rod 102 is provided with a spring 103, and the top of the spring 103 is fixedly connected with a workbench 104; The vibration mechanism 1 is installed on the top of the base 101 and is used for vibration treatment of the workbench 104, and the vibration mechanism 1 comprises a working frame 105 installed on one side of the base 101, a driving motor 106 fixedly installed at the bottom of the working frame 105, a driving shaft 107 fixedly connected with the output shaft of the driving motor 106, and a cam 108 installed on the outer ring of the driving shaft 107 and used for realizing periodic lifting vibration of the workbench 104. The working mechanism 2 is installed on the top of the workbench 104 and is used for normal process of flotation, and the working mechanism 2 comprises a limiting plate 210 fixedly connected with the top of the workbench 104, a limiting hole 211 penetrating through the top and bottom of the limiting plate 210, a jet pipe 205 rotatably connected in the inner cavity of the limiting hole 211, a nozzle 208 installed at the bottom of the jet pipe 205 and used for releasing airflow into the ore pulp, and stirring blades 209 installed at the bottom of the jet pipe 205 and used for forming tangential flow in the ore pulp and accelerating airflow flow.

[0029] As shown in Figure 3 , the vibration mechanism 1 further comprises a limiting seat 109 installed at the bottom of the working frame 105, the driving shaft 107 penetrates through the limiting seat 109 and extends into the inner cavity of the base 101, the bottom of the workbench 104 is fixedly connected with a cam seat 110, the bottom of the cam seat 110 is provided with a cam groove 111 for accommodating the cam 108 and guiding the rotation of the cam 108, and the vertical vibration of the workbench 104 is converted.

[0030] As shown in Figures 7-8 , the working mechanism 2 comprises a supporting plate 201 fixedly connected with the top of the workbench 104, a stirring motor 202 installed at the top of the supporting plate 201, a driving shaft 203 installed at the bottom of the output shaft of the stirring motor 202, a driving gear 204 installed at the bottom of the driving shaft 203, and a driven gear 206 installed on the outer ring of the jet pipe 205 and meshed with the driving gear 204, which is used for driving the rotary motion of the jet pipe 205.

[0031] As shown in Figure 10 , the working mechanism 2 further comprises a hose 207 installed at the top of the jet pipe 205, the hose 207 penetrates through the workbench 104 and extends to the back of the workbench 104, and is used for connecting an external air source.

[0032] As shown in Figure 1 , Figures 7-9As shown, the lifting mechanism 3 comprises a connecting table 308 fixedly connected on both sides of the top of the workbench 104, a through hole 309 is formed in the connecting table 308 on both sides and penetrates the top and bottom ends, a lifting threaded rod 301 is rotatably connected in the inner cavity of the through hole 309 on both sides, a lifting plate 302 is threadedly connected to the outer circle of the lifting threaded rod 301 on both sides, a filter hole 303 is formed in the inner cavity of the lifting plate 302, the filter hole 303 is distributed in a matrix array, and is used for separating mineralized foam and tailings, and a driving mechanism 4 is further installed on one side of the workbench 104.

[0033] The driving mechanism 4 further comprises a lifting seat 401 installed on one side of the workbench 104, a lifting motor 402 is installed on the top of the lifting seat 401, a driving bevel gear 403 is fixedly connected to the output shaft of the lifting motor 402, a driven bevel gear 404 is installed on the outer circle of the lifting threaded rod 301 on the left side, the driving bevel gear 403 and the driven bevel gear 404 are meshed with each other, and are used for driving the lifting threaded rod 301 to rotate.

[0034] As shown in the figure, Figures 8-9 The lifting plate 302 is provided with a circular hole 304 penetrating the top and bottom ends, which is used for placing the air injection pipe 205, and a limiting rod 305 is installed on both sides of the workbench 104, which is used for limiting the lifting of the lifting plate 302, and a synchronous wheel 306 is further installed on the top of the lifting threaded rod 301, and the synchronous wheels 306 are connected through a belt 307, so as to ensure that the lifting threaded rods 301 on both sides rotate synchronously.

[0035] The working principle of the embodiment of the application is that the driving motor 106 outputs a rotary motion after being powered on, which is transmitted to the cam 108 through the driving shaft 107; the cam 108 rolls continuously in the cam groove 111 of the cam seat 110, and converts the rotary motion into a periodic lifting displacement of the workbench 104, and the displacement is amplified into high-frequency micro-amplitude vibration through the elastic support system composed of the telescopic rod 102 and the spring 103, so that the mineralized foam or the reagent attached to the inner wall of the workbench 104 falls off under the action of inertial force, and the self-cleaning function is realized. The vibration is carried out synchronously in the flotation process, which can utilize the inertial force to promote the efficient collision and adhesion of bubbles and ore particles in the initial stage of the formation of the mineralized foam, so as to reduce the falling probability of the coarse-grained minerals, and thus improve the recovery rate of the target minerals.

[0036] The stirring motor 202 is started synchronously, the output end of the stirring motor 202 drives the driving shaft 203 to rotate the driving gear 204, the driving gear 204 is meshed with the driven gear 206, and the air injection pipe 205 is driven to rotate around its axis as a whole; the stirring blade 209 at the lower end of the air injection pipe 205 forms a tangential flow field in the ore pulp, and at the same time, the external gas source enters the air injection pipe 205 through the hose 207 and uniformly releases bubbles from the nozzle 208; after the ore pulp is injected into the inner cavity of the workbench 104, the target minerals are attached to the bubbles and float to form a mineralized foam layer.

[0037] The lifting motor 402 is started according to a process program, the driving bevel gear 403 drives the driven bevel gear 404 and drives the left lifting threaded rod 301 to rotate, the right lifting threaded rod 301 is synchronously rotated through the synchronous wheel 306 and the belt 307; the lifting plate 302 is vertically lifted under the guidance of the limiting rod 305, the filter hole 303 lifts the mineralized foam layer to the height corresponding to the discharge pipe 112, and the foam is discharged through the discharge pipe 112; the mineral particles and tailings that do not reach the flotation particle size are deposited at the bottom of the workbench 104 through the filter hole 303, and finally are discharged through the excess material pipe 113, completing a single flotation cycle.

[0038] When the single flotation operation is completed, the driving motor 106 continues to operate for a short time, the workbench 104 shakes under the inertia vibration effect, the residual slurry attached to the inner wall is shaken off, is concentratedly discharged through the excess material pipe 113, and self-cleaning is realized; the elastic support system composed of the spring 103 and the telescopic rod 102 not only plays a buffering and damping role, but also forms a resonance amplification effect in the vibration process, so that the vibration energy is more concentratedly transmitted to the inner wall of the workbench 104, the cleaning efficiency is improved, and the energy consumption is reduced.

[0039] Embodiment 2;

[0040] Please refer to Figures 3-6 In the embodiment of the application, the inner cavity of the workstand 105 is provided with a monitoring mechanism 5; The monitoring mechanism 5 comprises a stepping motor 501 installed at the top of the inner cavity of the workstand 105, a bidirectional screw rod 502 fixedly connected to the output shaft of the stepping motor 501, a moving block 503 threadedly connected to the outer ring of the bidirectional screw rod 502, a rotating plate 504 hingedly connected to the bottom of the moving block 503, the rotating plate 504 being distributed in an X shape and being rotatably connected through a pin shaft between the rotating plates 504, a lifting block 505 hingedly connected to the bottom of the rotating plate 504, and a work plate 506 slidably connected to the bottom of the lifting block 505, for lifting the work plate 506.

[0041] The monitoring mechanism 5 comprises a camera 507 installed at the bottom of the work plate 506, for monitoring the flotation process in real time, a limiting groove 508 is formed in the inner wall of the work plate 506, and a limiting shaft 509 is installed on the outer ring of the lifting block 505 and located in the inner cavity of the limiting groove 508, for realizing stable lifting of the work plate 506.

[0042] The back surface of the workbench 104 is provided with a discharge pipe 112 for discharging the mineralized foam; the bottom of the workbench 104 is provided with an excess material pipe 113 for discharging the tailings and residual slurry.

[0043] The working principle of the embodiment of the present application is that after the flotation and self-cleaning actions of embodiment 1 are completed, the monitoring mechanism 5 enters the working mode. The stepping motor 501 is started and drives the bidirectional screw rod 502 to rotate, and the moving block 503 moves back and forth along the axis of the bidirectional screw rod 502; the moving block 503 drives the lifting block 505 to move up and down through the rotating plate 504, and the hinged structure of the rotating plate 504 and the lifting block 505 makes the working plate 506 realize the lifting process, thereby changing the height of the camera 507 to meet the monitoring needs in cooperation with the flotation process; the mechanical limiting of the lifting block 505 and the working plate 506 by the sliding of the limiting shaft 509 in the limiting groove 508 ensures that the camera 507 is always aligned with the monitoring area of the inner cavity of the workbench 104.

[0044] The camera 507 collects the thickness, color and fluidity images of the mineralized foam layer in real time during the flotation process, and outputs the image signals to the external monitoring terminal; the operator adjusts the rotation speed of the stirring motor 202, the air volume entering the air injection pipe 205 through the hose 207 or the action timing of the lifting motor 402 according to the feedback information to optimize the flotation index; after the batch operation is completed, the camera 507 performs secondary scanning on the inner wall of the workbench 104 to confirm that there is no residual material attached, ensuring the process consistency of the next batch operation; through the closed-loop control of visual feedback, the waste of reagents or the risk of flotation failure caused by improper parameter setting can be significantly reduced, and the flotation recovery rate and concentrate grade can be improved; in addition, the hinged structure of the rotating plate 504 and the lifting block 505 makes the working plate 506 realize the lifting process, thereby changing the height of the camera 507, so that the camera 507 realizes large field coverage in a limited space, reduces the blind area, improves the monitoring reliability, and the mechanism is not rigidly connected with the vibration mechanism 1, avoiding the vibration interference of the camera 507.

[0045] Embodiment 3;

[0046] Please refer to Figures 1-11, provide a specific embodiment, the bauxite ore broken to particle size is not more than 2 mm, take dry ore 100 kg, into the process water 400 L, in the pulp conditioning barrel add 400 g collector RA-715 and 200 g frother MIBC, stirring 5 min form mass concentration 20% of the slurry. Through the hose 207 continuously to the air pipe 205 delivery compressed air, the air supply pressure is set to 0.25 MPa, the flow rate is maintained at 60 L / min. Start the drive motor 106, the speed is set to 1450 r / min, through the drive shaft 107, cam 108 after the action of the workbench 104 generates amplitude 2 mm, frequency 24 Hz vertical micro-vibration. Stirring motor 202 is started synchronously, the speed is set to 800 r / min, the speed ratio of the driving gear 204 and the driven gear 206 is 2:1, the air pipe 205 and the stirring blade 209 rotate at 400 r / min, forming a stable spiral flow in the slurry. The slurry is uniformly injected into the workbench 104 through the feed inlet, and the liquid level is controlled at 150 mm from the lower edge of the discharge pipe 112. The flotation time is 6 min, during which the lifting plate 302 is at the lowest position, and the filter hole 303 is completely immersed in the slurry. After the flotation is completed, the lifting motor 402 is started, the speed is set to 200 r / min, the speed ratio of the driving bevel gear 403 and the driven bevel gear 404 is 1:1, the left and right lifting threaded rods 301 rotate synchronously, the lifting plate 302 rises at a speed of 20 mm / s, the stroke is 200 mm, and the mineralized foam layer is lifted to the height of the discharge pipe 112. The foam product flows into the collection tank through the discharge pipe 112, and the concentrate is obtained, the concentrate is 32 kg, the alumina grade is 62.8%, and the recovery rate is 78.5%. The tailings are deposited at the bottom of the workbench 104 through the filter hole 303, and are discharged through the excess material pipe 113, the tailings yield is 68%, and the alumina grade is 11.3%. After the batch operation is completed, the drive motor 106 continues to run for 30 s, and the workbench 104 completes self-cleaning under the inertial vibration, and the residual tailings are completely discharged through the excess material pipe 113. The stepping motor 501 is then started, the speed is set to 100 r / min, the bidirectional screw rod 502 has a pitch of 4 mm, and the moving block 503 completes ±50 mm reciprocating movement. The camera 507 carries out secondary confirmation on the inner wall of the workbench 104, the image shows that there is no visible attachment, and the system enters standby state, waiting for the next batch of feeding.

[0047] Working principle: the drive motor 106 outputs rotary motion after being powered, which is transmitted to the cam 108 through the drive shaft 107; the cam 108 rolls continuously in the cam groove 111 of the cam seat 110, converting the rotary motion into periodic lifting displacement of the workbench 104, which is amplified to high-frequency micro-vibration by the elastic support system composed of the telescopic rod 102 and the spring 103, so that the mineralized foam or reagent attached to the inner wall of the workbench 104 is detached under the action of inertial force, realizing the self-cleaning function.

[0048] The stirring motor 202 is synchronously started, and its output end drives the driving gear 204 to rotate through the driving shaft 203, the driving gear 204 meshes with the driven gear 206, and drives the whole jet pipe 205 to rotate around its own axis; the stirring blade 209 at the lower end of the jet pipe 205 forms a tangential flow field in the ore pulp, and at the same time, the external air source enters the jet pipe 205 through the hose 207 and is uniformly released by the nozzle 208, after the ore pulp is injected into the inner cavity of the workbench 104, the target mineral is attached to the bubble to float and form a mineralized foam layer.

[0049] The lifting motor 402 is started according to the process program, the driving bevel gear 403 drives the driven bevel gear 404 and drives the left lifting threaded rod 301 to rotate, and through the synchronous wheel 306 and the belt 307, the right lifting threaded rod 301 is synchronously rotated; the lifting plate 302 is vertically lifted under the guidance of the limiting rod 305, the filter hole 303 lifts the mineralized foam layer to the height corresponding to the discharge pipe 112, and the foam is discharged through the discharge pipe 112; the mineral particles and tailings that do not reach the flotation particle size are deposited at the bottom of the workbench 104 through the filter hole 303, and finally discharged through the excess material pipe 113, completing a single flotation cycle.

[0050] The camera 507 collects the thickness, color and fluidity images of the mineralized foam layer in the flotation process in real time, and outputs the image signal to the external monitoring terminal; the operator adjusts the rotating speed of the stirring motor 202, the air volume entering the jet pipe 205 through the hose 207 or the action timing of the lifting motor 402 according to the feedback information, so as to optimize the flotation index. After the batch operation is completed, the camera 507 performs secondary scanning on the inner wall of the workbench 104 to confirm that there is no residual material attached, and ensures the process consistency of the next batch operation.

[0051] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A bauxite flotation device, characterized in that, include: A base (101) is provided with a telescopic rod (102) mounted on its top. A spring (103) is mounted on the outer ring of the telescopic rod (102). A worktable (104) is fixedly connected to the top of the spring (103). Vibration mechanism (1), the vibration mechanism (1) is installed on the top of the base (101) for vibration treatment of the worktable (104), the vibration mechanism (1) includes a work frame (105) installed on one side of the base (101), a drive motor (106) is fixedly installed at the bottom of the work frame (105), the output shaft of the drive motor (106) is fixedly connected to a drive shaft (107), and a cam (108) is installed on the outer ring of the drive shaft (107) for realizing the periodic lifting vibration of the worktable (104); The working mechanism (2) is installed on the top of the workbench (104) and used for the normal process of flotation. The working mechanism (2) includes a limiting plate (210) fixedly connected to the top of the workbench (104). The limiting plate (210) has a limiting hole (211) that runs through its top and bottom ends. An air jet pipe (205) is rotatably connected in the inner cavity of the limiting hole (211). A nozzle (208) is installed at the bottom of the air jet pipe (205) for releasing airflow into the slurry. A stirring blade (209) is also installed at the bottom of the air jet pipe (205). The stirring blade (209) is distributed in multiple circumferential arrays to form tangential flow in the slurry and accelerate the airflow.

2. The bauxite flotation device according to claim 1, characterized in that: The vibration mechanism (1) also includes a limiting seat (109) installed at the bottom of the work frame (105). The drive shaft (107) passes through the limiting seat (109) and extends into the inner cavity of the base (101). A cam seat (110) is fixedly connected to the bottom of the worktable (104). A cam groove (111) is provided at the bottom of the cam seat (110) to accommodate the cam (108) and guide its rotation, which is converted into vertical vibration of the worktable (104).

3. The bauxite flotation apparatus according to claim 1, characterized in that: The working mechanism (2) includes a support plate (201) fixedly connected to the top of the workbench (104). A stirring motor (202) is installed on the top of the support plate (201). A drive shaft (203) is installed at the bottom of the output shaft of the stirring motor (202). A drive gear (204) is installed at the bottom of the drive shaft (203). A driven gear (206) is installed on the outer ring of the jet pipe (205). The driven gear (206) meshes with the drive gear (204) to drive the rotation of the jet pipe (205).

4. The bauxite flotation device according to claim 3, characterized in that: The working mechanism (2) also includes a hose (207) installed on top of the jet pipe (205), the hose (207) passing through the workbench (104) and extending to the back of the workbench (104) for connecting to an external air source, and a lifting mechanism (3) is also installed in the inner cavity of the workbench (104).

5. The bauxite flotation apparatus according to claim 4, characterized in that: The lifting mechanism (3) includes a connecting platform (308) fixedly connected to both sides of the top of the workbench (104). The connecting platform (308) on both the left and right sides is provided with through holes (309) penetrating its top and bottom ends. The inner cavity of the through holes (309) on both the left and right sides is rotatably connected with a lifting threaded rod (301). The outer ring of the lifting threaded rod (301) on both the left and right sides is threadedly connected with a lifting plate (302). The inner cavity of the lifting plate (302) is provided with a filter hole (303). The filter hole (303) is distributed in multiple matrix arrays and is used to separate mineralized foam and tailings. A drive mechanism (4) is also installed on one side of the workbench (104).

6. The bauxite flotation apparatus according to claim 5, characterized in that: The drive mechanism (4) also includes a lifting seat (401) installed on one side of the workbench (104). A lifting motor (402) is installed on the top of the lifting seat (401). The output shaft of the lifting motor (402) is fixedly connected to a drive bevel gear (403). A driven bevel gear (404) is installed on the outer ring of the lifting threaded rod (301) located on the left side. The drive bevel gear (403) and the driven bevel gear (404) mesh with each other to drive the lifting threaded rod (301) to rotate.

7. A bauxite flotation apparatus according to claim 5, characterized in that: The lifting plate (302) has a circular hole (304) that passes through its top and bottom ends for placing the jet pipe (205). Limit rods (305) are installed on both sides of the worktable (104) for limiting the lifting of the lifting plate (302). A synchronous wheel (306) is also installed on the top of the lifting threaded rod (301). The synchronous wheels (306) are connected by a belt (307) to ensure that the lifting threaded rods (301) on both sides rotate synchronously.

8. The bauxite flotation apparatus according to claim 1, characterized in that: A monitoring mechanism (5) is installed in the inner cavity of the work frame (105); The monitoring mechanism (5) includes a stepper motor (501) installed on the top of the inner cavity of the work frame (105). The output shaft of the stepper motor (501) is fixedly connected to a two-way lead screw (502). The outer ring of the two-way lead screw (502) is threadedly connected to a moving block (503). The bottom of the moving block (503) is hinged to a rotating plate (504). The rotating plates (504) are distributed in an X shape and are rotatably connected to each other by a pin. The bottom of the rotating plate (504) is hinged to a lifting block (505). The bottom of the lifting block (505) is slidably connected to a working plate (506) for the lifting process of the working plate (506).

9. A bauxite flotation apparatus according to claim 8, characterized in that: The monitoring mechanism (5) includes a camera (507) installed at the bottom of the working plate (506) for real-time monitoring of the flotation process. A limit groove (508) is opened on the inner wall of the working plate (506). A limit shaft (509) is installed on the outer ring of the lifting block (505), and the limit shaft (509) is located in the inner cavity of the limit groove (508) to realize the smooth lifting of the working plate (506).

10. A bauxite flotation apparatus according to claim 1, characterized in that: The back of the workbench (104) is equipped with a discharge pipe (112) for discharging mineralized foam; the bottom of the workbench (104) is equipped with a residual material pipe (113) for discharging tailings and residual slurry.

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