Bauxite flotation device

Abstract

The application relates to the technical field of bauxite flotation, and discloses a bauxite flotation device which comprises a base, a telescopic rod is arranged on the top of the base, a spring is arranged on the outer ring of the telescopic rod, and a workbench is fixedly connected to the top of the spring; a vibrating mechanism is arranged on the top of the base and used for vibrating treatment of the workbench; and a working mechanism is arranged on the top of the workbench and used for a normal process of flotation. The telescopic rod and the spring arranged at the bottom of the workbench are matched with the vibrating mechanism composed of a driving motor, a cam and a cam seat, high-frequency micro-amplitude vibration is actively generated during the flotation process and after the work is completed, inertia force is used to effectively strip the mineralized foam or residual reagent attached to the inner wall of the workbench, and the wall sticking phenomenon is obviously reduced.

Description

Technical Field

[0001] This invention relates to the field of bauxite flotation technology, specifically to a bauxite flotation device. Background Technology

[0002] During the operation of the flotation machine, the operator adds water and necessary reagents to the ground ore, mixes it in a stirring tank to form a slurry, and then pours it into the slurry tank. Air is then introduced into the slurry to form a large number of bubbles. Some mineral particles that are not easily wetted by water adhere to the bubbles and float to the surface of the slurry along with the bubbles, forming a mineralized bubble layer. Other mineral particles that are easily wetted by water do not adhere to the bubbles and remain in the slurry. The mineralized bubbles containing specific minerals are then discharged, thereby achieving the purpose of mineral beneficiation.

[0003] A search revealed a utility model patent in China with patent number CN212328616U, which discloses a bauxite flotation device. The device includes a housing with a feed inlet on the left side, a reagent dosing device on the top, and a tailings outlet at the bottom. An agitator shaft is located within the housing's interior. The lower end of the agitator shaft has an agitator paddle and an air jet pipe. The agitator shaft is hollow and connected to the air jet pipe, which has several air jet holes on its surface. A straight pipe is fixed to the upper end of the agitator shaft and connected to a drive motor via a belt. The straight pipe is also movably connected to an air inlet pipe, which is connected to an air filling device via a pipe. An air blowing pipe is located at the top of the housing and connected to a blower.

[0004] A search revealed a utility model patent in China with patent number CN210545665U, which discloses a flotation mineralization device for bauxite waste beneficiation, comprising a main module and a rotating module. The main module includes a hollow cylindrical tank arranged vertically and open at the top. A foam storage component for collecting foam in an atomization chamber is connected to the upper part of the tank. The bottom end of the feed pipe in the atomization chamber is connected to a vertically downward atomizing nozzle. A horizontal wire mesh is fixed around the inner side wall of the tank at the lower part of the atomization chamber. A motor bracket and a motor are fixed at opposite positions on the bottom wall of the tank. The rotating module includes a horizontal rotating disk. A spherical dome protruding upwards and spherical in shape is fixed on the top surface of the rotating disk. The edge of the spherical dome is a certain distance away from the edge of the rotating disk. A material flow hole penetrating the rotating disk is vertically opened at the relative position between the edge of the spherical dome and the edge of the rotating disk.

[0005] The aforementioned patents focus on improving the mixing effect of slurry and reagents through methods such as stirring, jetting, or rotating discs. However, after the device is completed, there is a common defect of raw materials sticking to the wall. Since the tank is a rigid fixed structure, the stirring shaft, jetting pipe, and stirring paddle are all rigidly connected to the tank through bearing seats or flanges. Therefore, after the slurry is injected, stirred, and aerated, the high-viscosity mineralized foam or reagents easily adhere to the inner wall, forming stubborn residues. Furthermore, the tank and the frame are generally rigidly fixed by welding or bolts, without excitation motors or elastic damping elements such as rubber pads and spring supports. This results in the tank being unable to generate high-frequency micro-vibrations and unable to use inertial force to peel off the attached materials. Based on this, the present invention designs a bauxite flotation device to solve the above problems. Summary of the Invention

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

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A bauxite flotation apparatus, comprising:

[0009] A base, the top of which is equipped with a telescopic rod, the outer ring of which is equipped with a spring, and the top of which is fixedly connected to a worktable;

[0010] A vibration mechanism is installed on the top of the base for vibration treatment of the worktable. The vibration mechanism includes a work frame installed on one side of the base. A drive motor is fixedly installed at the bottom of the work frame. The output shaft of the drive motor is fixedly connected to a drive shaft. A cam is installed on the outer ring of the drive shaft to realize the periodic lifting and lowering vibration of the worktable.

[0011] The working mechanism is installed on the top of the worktable and is used for the normal flotation process. The working mechanism includes a limiting plate fixedly connected to the top of the worktable. The limiting plate has limiting holes that extend through its top and bottom ends. An air jet pipe is rotatably connected to the inner cavity of the limiting holes. A nozzle is installed at the bottom of the air jet pipe for releasing airflow into the slurry. A stirring blade is also installed at the bottom of the air jet pipe. The stirring blade is arranged in multiple sets of circumferential arrays to form tangential flow in the slurry and accelerate the airflow.

[0012] Preferably, the vibration mechanism further includes a limiting seat installed at the bottom of the work frame, the drive shaft passing through the limiting seat and extending into the inner cavity of the base, and a cam seat fixedly connected to the bottom of the worktable, the bottom of the cam seat having a cam groove for accommodating the cam and guiding its rotation, and converting it into vertical vibration of the worktable.

[0013] Preferably, the working mechanism includes a support plate fixedly connected to the top of the workbench, a stirring motor is mounted on the top of the support plate, a drive shaft is mounted on the bottom of the output shaft of the stirring motor, a drive gear is mounted on the bottom of the drive shaft, and a driven gear is mounted on the outer ring of the jet pipe. The driven gear meshes with the drive gear to drive the rotational movement of the jet pipe.

[0014] As can be seen from the above technical solution, after the bauxite flotation device is started, the drive motor starts, and its output shaft drives the drive shaft to rotate. The cam installed on the drive shaft rotates accordingly. The cam rolls continuously in the cam groove, converting the rotational motion into the periodic lifting motion of the worktable. The telescopic rod and the spring together form an elastic support, so that the worktable obtains high-frequency micro-amplitude vibration.

[0015] The stirring motor operates synchronously, driving the drive gear to rotate via the drive shaft. The drive gear meshes with the driven gear, causing the jet pipe to rotate around its own axis. The stirring blades at the lower end of the jet pipe create a tangential flow field in the slurry. Simultaneously, an external air source enters the jet pipe through a hose, uniformly releasing air bubbles into the slurry through the nozzle. After slurry preparation, the slurry is injected into the inner cavity of the worktable. Under the synergistic effect of the air bubbles and the stirring blades, the target mineral adheres to the air bubbles and floats to the surface, forming a mineralized foam layer.

[0016] Preferably, the working mechanism further includes a hose installed on top of the jet pipe, the hose passing through the workbench and extending to the back of the workbench for connecting to an external air source, and a lifting mechanism is also installed in the inner cavity of the workbench.

[0017] Preferably, the lifting mechanism includes connecting platforms fixedly connected to both sides of the top of the workbench. Each connecting platform on the left and right sides has a through hole extending through its top and bottom ends. Lifting threaded rods are rotatably connected to the inner cavities of the through holes on the left and right sides. Lifting plates are threadedly connected to the outer rings of the lifting threaded rods on the left and right sides. The inner cavity of the lifting plate has filter holes, which are distributed in multiple matrix arrays for separating mineralized foam and tailings. A drive mechanism is also installed on one side of the workbench.

[0018] Preferably, the drive mechanism further includes a lifting seat installed on one side of the worktable. A lifting motor is installed on the top of the lifting seat. The output shaft of the lifting motor is fixedly connected to a driving bevel gear. A driven bevel gear is installed on the outer ring of the lifting threaded rod located on the left side. The driving bevel gear and the driven bevel gear mesh with each other to drive the lifting threaded rod to rotate.

[0019] Preferably, the lifting plate has a circular hole penetrating its top and bottom ends for placing the jet pipe. Limiting rods are installed on both sides of the worktable for limiting the lifting of the lifting plate. Synchronous pulleys are also installed on the top of the lifting threaded rods. The synchronous pulleys are connected by a belt to ensure that the lifting threaded rods on both sides rotate synchronously.

[0020] As shown in the above technical solution, the lifting motor starts according to the process sequence. The active bevel gear drives the driven bevel gear and rotates the left lifting threaded rod. The synchronous pulley and belt cause the right lifting threaded rod to rotate synchronously. The lifting plate rises vertically along the limit rod. The filter holes lift the mineralized foam layer to the height of the discharge pipe, and the foam is discharged from the discharge pipe. Mineral particles that do not reach the flotation particle size and tailings pass through the filter holes and settle at the bottom of the worktable, and are finally discharged through the residue pipe, completing one flotation operation. When the device stops, the lifting plate resets, and the drive motor continues to run for a short time. Under the action of inertial vibration, the residual slurry adhering to the inner wall of the worktable is shaken off and discharged through the residue pipe, achieving self-cleaning.

[0021] Preferably, a monitoring mechanism is installed in the inner cavity of the work frame;

[0022] The monitoring mechanism includes a stepper motor installed at the top of the inner cavity of the work frame. The output shaft of the stepper motor is fixedly connected to a bidirectional lead screw. The outer ring of the bidirectional lead screw is threadedly connected to a moving block. A rotating plate is hinged to the bottom of the moving block. The rotating plates are distributed in an X shape and are rotatably connected to each other by a pin. A lifting block is hinged to the bottom of the rotating plate. A working plate is slidably connected to the bottom of the lifting block for the lifting process of the working plate.

[0023] Preferably, the monitoring mechanism includes a camera installed at the bottom of the working plate for real-time monitoring of the flotation process. A limit groove is formed on the inner wall of the working plate, and a limit shaft is installed on the outer ring of the lifting block. The limit shaft is located in the inner cavity of the limit groove to achieve smooth lifting of the working plate.

[0024] As described in the above technical solution, after the stepper motor starts, the bidirectional lead screw rotates, and the moving block reciprocates along the lead screw axis. The moving block drives the lifting block through the rotating plate, and the hinge structure between the rotating plate and the lifting block allows the working plate to gain the freedom of swing in a two-dimensional plane. The limiting shaft slides in the limiting groove to mechanically limit the swing amplitude of the working plate, ensuring that the camera always points to the monitoring area inside the working table cavity. The camera collects image information of the flotation process in real time and outputs it to an external monitoring terminal. The operator judges the thickness, color, and fluidity of the mineralized foam layer based on the image feedback, and adjusts the stirring motor speed, air intake, or lifting plate height as needed to optimize flotation indicators. When cleaning is required after a batch operation, the camera scans the inner wall of the working table again to confirm that residual materials have completely fallen off, ensuring the consistency of the process for the next batch operation.

[0025] Preferably, a discharge pipe is installed on the back of the workbench for discharging mineralized foam; and a residual material pipe is installed at the bottom of the workbench for discharging tailings and residual slurry.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0027] 1. This invention, by deeply coupling an elastic support system with a cam-type high-frequency micro-amplitude vibration mechanism, constructs an integrated operation mode for flotation and cleaning. Compared with traditional devices that rely on manual shutdown for scraping or high-pressure washing, this invention can automatically start the vibration cleaning program after each flotation cycle. It uses inertial vibration to effectively remove mineralized foam, residual reagents, and fine particles adhering to the inner wall, avoiding contamination of the next batch of slurry by residues and significantly improving the consistency of the process between batches. The elastic support composed of springs and telescopic rods not only plays a role in buffering and shock absorption, but also forms a resonant amplification effect during vibration, so that the vibration energy is more concentratedly transmitted to the inner wall of the worktable, improving cleaning efficiency while reducing energy consumption.

[0028] 2. This invention organically integrates functional modules such as vibration cleaning, stirring and aeration, foam separation and intelligent monitoring into the same device. The various mechanisms achieve high coordination through mechanical linkage and electrical control. The filter plate of the lifting mechanism not only undertakes the function of foam separation, but also acts as a "scraper" to assist in the removal of residual materials during the vibration cleaning stage. The camera of the monitoring mechanism is used for status monitoring during the flotation stage and for confirming the cleaning effect during the cleaning stage, realizing multiple uses of one machine, reducing maintenance complexity and operating costs, and is particularly suitable for small and medium-sized concentrators or mobile flotation operation scenarios.

[0029] 3. This invention uses a camera to capture real-time images of the thickness, color, bubble size, and flowability of the mineralized foam layer. Combined with image processing algorithms from an external terminal, operators can remotely identify the changing trends of the flotation state and adjust key parameters such as the stirring motor speed, gas flow rate, and lifting plate height in a timely manner to achieve closed-loop control. This intelligent control method 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 settings. It is especially suitable for complex working conditions with large fluctuations in ore properties. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is a schematic diagram of another aspect of the structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the work frame of the present invention;

[0033] Figure 4 This is a schematic diagram of the work frame of the present invention from another direction;

[0034] Figure 5 This is a cross-sectional view of the internal structure of the work frame of the present invention;

[0035] Figure 6 For the present invention Figure 5 Enlarged view of point A;

[0036] Figure 7 This is a schematic diagram of the structure of the worktable of the present invention;

[0037] Figure 8 This is a schematic diagram of the worktable of the present invention from another direction;

[0038] Figure 9 This is a schematic diagram of the worktable of the present invention from another direction;

[0039] Figure 10 This is a cross-sectional view of the internal structure of the workbench of the present invention;

[0040] Figure 11 This is a cross-sectional view of the internal structure of the workbench of the present invention at another location.

[0041] The components include: 1. Vibration mechanism; 2. Working mechanism; 3. Lifting mechanism; 4. Drive mechanism; 5. Monitoring mechanism; 101. Base; 102. Telescopic rod; 103. Spring; 104. Workbench; 105. Work frame; 106. Drive motor; 107. Drive shaft; 108. Cam; 109. Limit seat; 110. Cam seat; 111. Cam groove; 112. Discharge pipe; 113. Residual material pipe; 201. Support plate; 202. Stirring motor; 203. Drive shaft; 204. Drive gear; 205. 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 pulley; 307. Belt; 308. Connecting platform; 309. Through hole; 401. Lifting seat; 402. Lifting motor; 403. Driving bevel gear; 404. Driven bevel gear; 501. Stepper motor; 502. Two-way lead screw; 503. Moving block; 504. Rotating plate; 505. Lifting block; 506. Working plate; 507. Camera; 508. Limiting groove; 509. Limiting shaft. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1;

[0044] Please see Figures 1-3 , Figure 7 and Figure 11 A bauxite flotation device, comprising:

[0045] A base 101 is provided, and a telescopic rod 102 is installed on the top of the base 101. A spring 103 is installed on the outer ring of the telescopic rod 102, and a worktable 104 is fixedly connected to the top of the spring 103.

[0046] Vibration mechanism 1 is installed on the top of base 101 and is used for vibration treatment of worktable 104. Vibration mechanism 1 includes a work frame 105 installed on one side of base 101. A drive motor 106 is fixedly installed at the bottom of work frame 105. The output shaft of drive motor 106 is fixedly connected to drive shaft 107. A cam 108 is installed on the outer ring of drive shaft 107 to realize periodic lifting and lowering vibration of worktable 104.

[0047] Working mechanism 2 is installed on the top of workbench 104 and used for the normal flotation process. Working mechanism 2 includes a limiting plate 210 fixedly connected to the top of workbench 104. The limiting plate 210 has limiting holes 211 extending 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 arranged in multiple circumferential arrays to form tangential flow in the slurry and accelerate the airflow.

[0048] like Figure 3 As shown, 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.

[0049] like Figures 7-8 As shown, 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 rotational movement of the jet pipe 205.

[0050] like Figure 10As shown, the working mechanism 2 also includes a hose 207 installed on the top of the jet pipe 205. The hose 207 passes through the worktable 104 and extends to the back of the worktable 104 for connecting to an external air source. A lifting mechanism 3 is also installed in the inner cavity of the worktable 104.

[0051] like Figure 1 , Figures 7-9 As shown, the lifting mechanism 3 includes connecting platforms 308 fixedly connected to the top two sides of the workbench 104. Each connecting platform 308 on the left and right sides has a through hole 309 penetrating its top and bottom ends. Lifting threaded rods 301 are rotatably connected to the inner cavities of the through holes 309 on the left and right sides. Lifting plates 302 are threadedly connected to the outer rings of the lifting threaded rods 301 on the left and right sides. The inner cavity of the lifting plate 302 has filter holes 303. The filter holes 303 are distributed in multiple matrix arrays for separating mineralized foam and tailings. A drive mechanism 4 is also installed on one side of the workbench 104.

[0052] 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.

[0053] like Figures 8-9 As shown, 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.

[0054] The working principle of this invention is as follows: After the drive motor 106 is energized, it outputs rotational motion, which is transmitted to the cam 108 via the drive shaft 107. The cam 108 continuously rolls within the cam groove 111 of the cam seat 110, converting the rotational motion into periodic lifting and lowering displacement of the worktable 104. This displacement is amplified into high-frequency micro-amplitude vibration through the elastic support system composed of the telescopic rod 102 and the spring 103, causing the mineralized foam or reagents adhering to the inner wall of the worktable 104 to detach under the action of inertial force, thus achieving a self-cleaning function. This vibration occurs synchronously during the flotation process, enabling the inertial force to promote efficient collision and adhesion between bubbles and mineral particles in the early stage of mineralized foam formation, reducing the probability of coarse-grained minerals detaching, thereby improving the recovery rate of the target mineral.

[0055] The stirring motor 202 starts synchronously, and its output end drives the driving gear 204 to rotate via the drive shaft 203. The driving gear 204 meshes with the driven gear 206, causing the 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 slurry. At the same time, the external air source enters the jet pipe 205 through the hose 207 and releases bubbles evenly through the nozzle 208. After the slurry is injected into the inner cavity of the workbench 104, the target minerals attach to the bubbles and float to the surface to form a mineralized foam layer.

[0056] The lifting motor 402 starts according to the process procedure. The active 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 rotates synchronously through the synchronous pulley 306 and the belt 307. The lifting plate 302 rises vertically under the guidance of the limit rod 305. The filter hole 303 lifts the mineralized foam layer to the height corresponding to the discharge pipe 112. The foam is discharged through the discharge pipe 112. The mineral particles that do not reach the flotation particle size and the tailings pass through the filter hole 303 and are deposited at the bottom of the worktable 104. Finally, they are discharged through the residue pipe 113, completing a single flotation cycle.

[0057] After a single flotation operation is completed, the drive motor 106 continues to run for a short time. Under the action of inertial vibration, the residual slurry adhering to the inner wall of the worktable 104 is shaken off and discharged in a concentrated manner through the residue pipe 113, thus achieving self-cleaning. The elastic support system composed of the spring 103 and the telescopic rod 102 not only plays a role in buffering and shock absorption, but also forms a resonance amplification effect during vibration, so that the vibration energy is transmitted to the inner wall of the worktable 104 more concentratedly, improving cleaning efficiency while reducing energy consumption.

[0058] Example 2;

[0059] Please see Figures 3-6 In this embodiment of the invention, a monitoring mechanism 5 is installed in the inner cavity of the work frame 105;

[0060] 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 bidirectional lead screw 502. The outer ring of the bidirectional lead screw 502 is threadedly connected to a moving block 503. A rotating plate 504 is hinged to the bottom of the moving block 503. The rotating plates 504 are distributed in an X shape and are rotatably connected to each other by a pin. A lifting block 505 is hinged to the bottom of the rotating plate 504. A working plate 506 is slidably connected to the bottom of the lifting block 505 for the lifting process of the working plate 506.

[0061] 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, and a limit shaft 509 is installed on the outer ring of the lifting block 505. The limit shaft 509 is located in the inner cavity of the limit groove 508 to achieve smooth lifting of the working plate 506.

[0062] A discharge pipe 112 is installed on the back of the workbench 104 for discharging mineralized foam; a residual material pipe 113 is installed at the bottom of the workbench 104 for discharging tailings and residual slurry.

[0063] The working principle of this embodiment is as follows: After completing the flotation and self-cleaning actions in Embodiment 1, the monitoring mechanism 5 enters the working mode. The stepper motor 501 starts and drives the bidirectional lead screw 502 to rotate, and the moving block 503 reciprocates along the axis of the bidirectional lead screw 502; the moving block 503 drives the lifting block 505 to move up and down through the rotating plate 504, and the hinge structure between the rotating plate 504 and the lifting block 505 enables the working plate 506 to rise and fall, thereby changing the height of the camera 507 to meet the monitoring needs of the flotation process; the sliding of the limiting shaft 509 in the limiting groove 508 mechanically limits the lifting block 505 and the working plate 506, ensuring that the camera 507 is always aligned with the monitoring area inside the cavity of the worktable 104.

[0064] Camera 507 acquires images of the thickness, color, and flowability of the mineralized froth layer in real time during the flotation process and outputs the image signals to an external monitoring terminal. Operators remotely adjust the speed of the stirring motor 202, the air volume entering the jet pipe 205 via the hose 207, or the timing of the lifting motor 402 based on feedback information to optimize flotation parameters. After each batch of operations is completed, camera 507 performs a secondary scan of the inner wall of the workbench 104 to confirm the absence of residual material, ensuring process consistency for the next batch. Closed-loop control through visual feedback significantly reduces the risk of reagent waste or flotation failure due to improper parameter settings and improves flotation recovery and concentrate grade. Furthermore, the hinged structure of the rotating plate 504 and the lifting block 505 enables the working plate 506 to rise and fall, thereby changing the height of camera 507. This allows camera 507 to achieve a large field of view coverage within a limited space, reducing blind spots and improving monitoring reliability. Moreover, this mechanism is not rigidly connected to the vibration mechanism 1, preventing camera 507 from being affected by vibration.

[0065] Example 3;

[0066] Please see Figures 1-11A specific embodiment is provided, in which 100 kg of dry bauxite ore is crushed to a particle size of no more than 2 mm, and 400 L of process water is added. 400 g of collector RA-715 and 200 g of foaming agent MIBC are added to a slurry mixing tank, and the mixture is stirred for 5 min to form a slurry with a mass concentration of 20%. Compressed air is continuously supplied to the jet pipe 205 through hose 207, with the supply pressure set at 0.25 MPa and the flow rate maintained at 60 L / min. The drive motor 106 is started, with the speed set at 1450 r / min. After being driven by the drive shaft 107 and cam 108, the worktable 104 generates a vertical micro-vibration with an amplitude of 2 mm and a frequency of 24 Hz. The stirring motor 202 is started synchronously, with the speed set at 800 r / min. The speed ratio of the driving gear 204 to the driven gear 206 is 2:1. The jet pipe 205 and the stirring blades 209 rotate at a uniform speed of 400 r / min, forming a stable vortex in the slurry. The slurry is evenly injected into the workbench 104 through the feed inlet, with the liquid level controlled at 150 mm from the lower edge of the discharge pipe 112. The flotation time lasts for 6 minutes, during which the lifting plate 302 is at its lowest position, and the filter holes 303 are completely submerged in the slurry. After flotation, the lifting motor 402 is started, with the speed set at 200 r / min. The speed ratio between the driving bevel gear 403 and the driven bevel gear 404 is 1:1, and the left and right lifting threaded rods 301 rotate synchronously. The lifting plate 302 rises uniformly at a speed of 20 mm / s, with a stroke of 200 mm, lifting the mineralized froth layer to the height of the discharge pipe 112. The froth product flows by gravity into the collection tank through the discharge pipe 112, yielding a concentrate of 32 kg, an alumina grade of 62.8%, and a recovery rate of 78.5%. The tailings pass through the filter holes 303 and settle at the bottom of the workbench 104, and are discharged through the residue pipe 113, with a tailings yield of 68% and an alumina grade of 11.3%. After the batch operation is completed, the drive motor 106 continues to run for 30 seconds, and the workbench 104 completes self-cleaning under inertial vibration. All residual tailings are discharged through the waste material pipe 113. The stepper motor 501 then starts, with the speed set to 100 r / min. The two-way lead screw 502 has a pitch of 4 mm, and the moving block 503 completes ±50 mm reciprocating movement. The camera 507 performs a secondary check on the inner wall of the workbench 104. The image shows no visible attachments, and the system enters standby mode, waiting for the next batch of material to be fed.

[0067] Working principle: After the drive motor 106 is powered on, it outputs rotational motion, which is transmitted to the cam 108 via the drive shaft 107. The cam 108 rolls continuously in the cam groove 111 of the cam seat 110, converting the rotational motion into the periodic lifting displacement of the worktable 104. This displacement is amplified into high-frequency micro-amplitude vibration through the elastic support system composed of the telescopic rod 102 and the spring 103, causing the mineralized foam or medicine attached to the inner wall of the worktable 104 to fall off under the action of inertial force, thus achieving the self-cleaning function.

[0068] The stirring motor 202 starts synchronously, and its output end drives the driving gear 204 to rotate via the drive shaft 203. The driving gear 204 meshes with the driven gear 206, causing the 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 slurry. At the same time, the external air source enters the jet pipe 205 through the hose 207 and releases bubbles evenly through the nozzle 208. After the slurry is injected into the inner cavity of the workbench 104, the target minerals attach to the bubbles and float to the surface to form a mineralized foam layer.

[0069] The lifting motor 402 starts according to the process procedure. The active 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 rotates synchronously through the synchronous pulley 306 and the belt 307. The lifting plate 302 rises vertically under the guidance of the limit rod 305. The filter hole 303 lifts the mineralized foam layer to the height corresponding to the discharge pipe 112. The foam is discharged through the discharge pipe 112. The mineral particles that do not reach the flotation particle size and the tailings pass through the filter hole 303 and are deposited at the bottom of the worktable 104. Finally, they are discharged through the residue pipe 113, completing a single flotation cycle.

[0070] Camera 507 captures real-time images of the thickness, color, and flowability of the mineralized froth layer during the flotation process and outputs the image signals to an external monitoring terminal. Based on the feedback, operators remotely adjust the speed of the stirring motor 202, the air volume entering the jet pipe 205 via the hose 207, or the timing of the lifting motor 402 to optimize flotation parameters. After each batch operation, camera 507 performs a secondary scan of the inner wall of the worktable 104 to confirm the absence of residual material, ensuring process consistency for the next batch.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which 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 is 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 a multi-group circumferential array distributed to form a tangential flow in the slurry and accelerate the airflow. A lifting mechanism (3) is also installed in the inner cavity of the workbench (104). 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). 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 at 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), and the bottom of the lifting block (505) is slidably connected to a working plate (506) for the lifting process of the working plate (506).

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 device 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.

5. The bauxite flotation apparatus according to claim 1, 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.

6. The bauxite flotation apparatus according to claim 1, 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.

7. The bauxite flotation apparatus according to claim 1, 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).

8. The 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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