Flotation machine

Abstract

The utility model relates to a flotation machine. The flotation machine comprises a groove body, a mineralization device and an anti-sedimentation device. The mineralization device comprises a rotor assembly and a mineralization tank, the mineralization tank is arranged in the tank body, a mechanical stirring cavity is formed in the mineralization tank, a pulp inlet used for supplying ore pulp into the mechanical stirring cavity is formed in the bottom of the mineralization tank, and a pulp outlet used for discharging the ore pulp is formed in the top of the mineralization tank. The rotor assembly comprises a rotating shaft and a rotor, the lower end of the rotating shaft extends into the mechanical stirring cavity, the rotor is installed at the lower end of the rotating shaft and located in the mechanical stirring cavity, and an anti-sedimentation device is installed in the mechanical stirring cavity and located below the rotor; the stirring device is used for stirring ore grains settled at the bottom of the mechanical stirring cavity in the mechanical stirring cavity. According to the flotation machine, the probability that ore grains which are not attached to bubbles settle in the mechanical stirring cavity can be reduced, and the flotation effect of the flotation machine can be improved.

Description

Technical Field

[0001] This utility model relates to the field of flotation technology, specifically to a flotation machine. Background Technology

[0002] Flotation is a widely used mineral processing method. When flotation is carried out using flotation equipment, the slurry is fed into the flotation cell and mechanically stirred or aerated to mineralize. After mineralization, the target mineral particles in the slurry selectively adhere to the air bubbles to form mineralized bubbles. The mineralized bubbles rise to the surface, while the mineral particles that do not adhere to the bubbles are discharged from the bottom of the flotation cell with the slurry, thereby achieving the purpose of separating minerals.

[0003] In related technologies, flotation equipment is equipped with a mechanical stirring chamber. Slurry and air are introduced into the mechanical stirring chamber from the outside, and mineralization occurs under the action of mechanical stirring. However, unmineralized mineral particles tend to settle at the bottom of the mechanical stirring chamber, thus affecting the flotation effect of the flotation machine. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, this utility model proposes a flotation machine that can reduce the probability of mineral particles that have not adhered to air bubbles settling in the mechanical stirring chamber, which is beneficial to improving the flotation effect of the flotation machine.

[0006] The flotation machine of this utility model embodiment includes: a tank; a mineralization device, the mineralization device including a rotor assembly and a mineralization tank, the mineralization tank being disposed in the tank body, the mineralization tank having a mechanical stirring chamber, the bottom of the mineralization tank having an inlet for supplying slurry into the mechanical stirring chamber, the top of the mineralization tank having an outlet for discharging slurry, the rotor assembly including a rotating shaft and a rotor, the lower end of the rotating shaft extending into the mechanical stirring chamber, the rotor being installed at the lower end of the rotating shaft and located within the mechanical stirring chamber; and an anti-settling device, the anti-settling device being installed within the mechanical stirring chamber and located below the rotor, for stirring the mineral particles settled at the bottom of the mechanical stirring chamber.

[0007] According to the flotation machine of this utility model embodiment, during mineralization, the slurry is fed into the mineralization tank from bottom to top through the slurry inlet. The rotor rotates and stirs within the mechanical stirring chamber, breaking up air to form microbubbles. Mineral particles adhere to these bubbles, forming mineralized bubbles. The slurry containing both mineralized bubbles and mineral particles not attached to bubbles flows out from the slurry outlet of the mineralization tank, with the mineralized bubbles flowing upwards. Because the anti-settling device is installed within the mechanical stirring chamber and located below the rotor, it can agitate mineral particles settled at the bottom of the mechanical stirring chamber, thereby preventing the problem of settled mineral particles within the mechanical stirring chamber and ensuring the flotation effect of the flotation machine.

[0008] In some embodiments, the anti-settlement device includes a rake frame located at the lower end of the rotor and drively connected to the shaft for being driven by the shaft.

[0009] In some embodiments, the rotating shaft has an air supply channel for supplying gas to the mechanical stirring chamber, and the rake frame is provided with an anti-settling jet channel, which is connected to the air supply channel. The jet nozzle of the anti-settling jet channel is vertically downward or inclined downward toward the bottom wall of the mineralization tank.

[0010] In some embodiments, the rotating shaft is provided with a water supply channel, the rake frame is provided with a water spraying channel, the water spraying channel is connected to the water supply channel, and the spray nozzle of the water spraying channel is vertically downward or inclined downward toward the bottom wall of the mineralization tank.

[0011] In some embodiments, the anti-settlement device includes a spray gun, one end of which is connected to an air source or a water source, and the other end of which extends into the mechanical stirring chamber and is arranged adjacent to the bottom of the mechanical stirring chamber.

[0012] In some embodiments, the flotation machine further includes a cover plate disposed above the mineralization tank, wherein the cover plate is opposite to the slurry outlet and spaced apart from the top surface of the mineralization tank, or the cover plate covers the slurry outlet and is provided with a flow hole for communicating the mechanical stirring chamber with the outside of the mechanical stirring chamber.

[0013] In some embodiments, the rotor includes a disk and a plurality of blades, the disk being mounted at the lower end of the shaft, and the plurality of blades being spaced apart along the outer periphery of the disk in a circumferential direction.

[0014] In some embodiments, the rotating shaft has a gas supply channel for supplying gas to the mechanical stirring chamber, the wheel has a first jet channel communicating with the gas supply channel in the rotating shaft, a first jet outlet of the first jet channel is formed on the outer circumferential surface of the wheel and is arranged at intervals along the circumference of the wheel, and the blade has a second jet channel communicating with the first jet channel, and a second jet outlet of the second jet channel is formed on the surface of the blade.

[0015] In some embodiments, the flotation machine further includes an aeration device. The flotation tank has an upper region and a column separation region. The upper region is located above the mineralization tank. The column separation region includes a lower region and a connecting region. The lower region is located below the mineralization tank. The connecting region is located between the outer peripheral wall of the mineralization tank and the inner peripheral wall of the tank. The aeration device is connected to the lower region and is used to inject gas into the lower region to perform column separation on the slurry entering the column separation region from the mechanical stirring chamber. A guide plate is provided in the connecting region, and the lower end of the guide plate is lower than the bottom surface of the mineralization tank.

[0016] In some embodiments, the tank is provided with an upper turbulence suppression grid, which is located above the mineralization tank and spaced at a predetermined distance from the mineralization tank, and the upper turbulence suppression grid is adjacent to the connecting area; and / or, the tank is provided with a lower turbulence suppression grid, which is located below the mineralization tank and spaced at a predetermined distance from the mineralization tank, and the lower turbulence suppression grid is arranged adjacent to the connecting area. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a flotation machine according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the mineralization device of the flotation machine according to an embodiment of the present invention.

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the mineralization device of the flotation machine according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the impeller of the flotation machine according to an embodiment of the present invention.

[0021] Figure 5 This is a partial cross-sectional schematic diagram of the impeller of the flotation machine according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of a rotor according to another embodiment of the present invention.

[0023] Figure 7This is a schematic diagram of the turbulence enhancement plate of the flotation machine according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the rake frame of the flotation machine according to an embodiment of the present invention.

[0025] Figure label:

[0026] 1. Mineralization tank; 11. Slurry inlet; 12. Slurry outlet; 13. Mechanical stirring chamber; 14. Turbulence reinforcement plate; 141. Hollow hole; 15. Drainage plate;

[0027] 2. Rotor assembly; 21. Shaft; 211. Air supply passage; 22. Rotor; 221. Hub; 222. Disc; 223. Blade; 2220. First jet passage; 2230. Second jet passage; 2231. Upper blade; 2232. Lower blade; 224. Top plate; 225. Bottom plate;

[0028] 3. Turbulence suppression grid; 31. Upper turbulence suppression grid;

[0029] 4. Tank body; 41. Lower area; 42. Upper area; 43. Connecting area; 44. Discharge port;

[0030] 5. Inflation device;

[0031] 6. Cover plate; 61. Flow hole;

[0032] 7. Anti-settlement device; 71. Rake frame; 711. Anti-settlement air jet channel; 72. Spray gun. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] The following is a reference appendix. Figures 1 to 8 A flotation machine according to an embodiment of the present invention is described.

[0035] like Figures 1 to 3 As shown, the flotation machine of this utility model embodiment includes: a tank 4, a mineralization device, and an anti-settling device 7. The mineralization device includes a rotor assembly 2 and a mineralization tank 1.

[0036] The mineralization tank 1 is located inside the tank body 4. The mineralization tank 1 has a mechanical stirring chamber 13, which is used for mineralization. This is called mechanical stirring mineralization. Under the mechanical stirring action of the rotor assembly 2, the target particles in the slurry and the air supplied into the mechanical stirring chamber 13 cause the target particles to adhere to the air bubbles to form mineralization bubbles, thereby realizing mechanical stirring flotation.

[0037] The bottom of the mineralization tank 1 is provided with a slurry inlet 11, which is used to supply slurry into the mechanical stirring chamber 13. The top of the mineralization tank 1 is provided with a slurry outlet 12, which is used to discharge the mechanically stirred slurry. It is understood that the slurry coming out of the mechanical stirring chamber 13 includes target particles attached to the air bubbles and other particles (target particles not attached to the air bubbles or other non-target particles).

[0038] The rotor assembly 2 includes a shaft 21 and a rotor 22. The lower end of the shaft 21 extends into the mechanical stirring chamber 13 through the slurry outlet 12. The rotor 22 is installed at the lower end of the shaft 21 and is located in the mechanical stirring chamber 13. The anti-settling device 7 is installed in the mechanical stirring chamber 13 and is located below the rotor 22. It is used to stir the mineral particles that have settled at the bottom of the mechanical stirring chamber 13.

[0039] According to the flotation machine of this utility model embodiment, during mineralization, the slurry is fed into the mineralization tank 1 from bottom to top through the slurry inlet 11. The rotor 22 rotates and stirs in the mechanical stirring chamber 13, breaking up the air to form microbubbles. Mineral particles adhere to the bubbles to form mineralized bubbles. The slurry containing mineralized bubbles and mineral particles not attached to the bubbles can flow out from the slurry outlet 12 of the mineralization tank, with the mineralized bubbles flowing upward. Since the anti-settling device 7 is installed in the mechanical stirring chamber 13 and located below the rotor 22, the anti-settling device 7 can agitate the mineral particles settled at the bottom of the mechanical stirring chamber 13, thereby avoiding the problem of mineral particles settling in the mechanical stirring chamber 13 and ensuring the flotation effect of the flotation machine.

[0040] When a large amount of mineral particles settle at the bottom of the mechanical stirring chamber 13, the effective volume of the mechanical stirring chamber 13 decreases, which in turn affects the mixing effect of the slurry and bubbles in the mechanical stirring chamber 13, thereby reducing the yield of mineralized foam and affecting the final flotation effect of the flotation machine. Therefore, the flotation machine of this embodiment can avoid the problem of mineral particles settling at the bottom of the mechanical stirring chamber 13 by agitating the mineral particles in the mechanical stirring chamber 13 with the anti-settling device 7.

[0041] It is understandable that mineralization refers to the selective adhesion process between target particles and bubbles. After mineralization, the slurry includes mineralized bubbles (mineralized bubbles can be called mineralized foam after aggregation; in the following description, mineralized bubbles and mineralized foam can be used interchangeably) and other particles that are not attached to the bubbles. Mineralized bubbles are the target particles that have been attached to the bubbles. Here, the target particles that have been attached to the bubbles can also be called mineralized particles. Other particles can include target particles that have not been attached to the bubbles, non-target mineral particles that have not been attached to the bubbles, and tailings particles.

[0042] Optionally, such as Figure 2 and Figure 8As shown, the anti-settling device 7 includes a rake frame 71, which is located at the lower end of the rotor 22 and is driven by the rotating shaft 21. It can be understood that both the rake frame 71 and the rotor 22 are mounted on the rotating shaft 21, and when the rotating shaft 21 rotates, it can simultaneously drive both the rake frame 71 and the rotor 22 to rotate. In other words, the rake frame 71 and the rotor 22 share a single power source, which allows for a more compact structure and lower cost for the flotation machine.

[0043] In some embodiments, such as Figure 1 , Figure 2 and Figure 8 As shown, the rotating shaft 21 has an air supply channel 211 for supplying gas to the mechanical stirring chamber 13, and the rake frame 71 is provided with an anti-settling air jet channel 711, which is connected to the air supply channel 211. The jet nozzle of the anti-settling air jet channel 711 is vertically downward or inclined downward toward the bottom wall of the mineralization tank 1. It can be understood that the gas in the mechanical stirring chamber 13 is supplied through the air supply channel 211 in the rotating shaft 21, thus the rotating shaft 21 can both drive the rotor 22 to rotate and provide mechanical stirring mineralization gas to the mechanical stirring chamber 13. Since the anti-settling air jet channel 711 is connected to the air supply channel 211, and the jet nozzle of the anti-settling air jet channel 711 is vertically downward or inclined downward toward the bottom wall of the mineralization tank 1, the mechanical stirring mineralization gas can impact the bottom wall of the mineralization tank 1, thereby resuspending the mineral particles settled at the bottom of the mechanical stirring chamber 13 and participating in mineralization, thus improving the mineralization effect of the mineralization tank.

[0044] In addition, the rotation of the rake frame 71 and the airflow ejected from the anti-settling jet channel 711 on the rake frame 71 can jointly agitate the mineral particles at the bottom of the mechanical mixing chamber 13, which can further prevent the problem of mineral particles settling in the mechanical mixing chamber 13.

[0045] Optionally, a water supply channel (not shown) is provided inside the rotating shaft 21, and a water spraying channel (not shown) is provided inside the rake frame 71. The water spraying channel is connected to the water supply channel, and the spray nozzles of the water spraying channel are vertically downward or inclined downward toward the bottom wall of the mineralization tank 1. It is understood that an external water source can be connected to the water supply channel, which can introduce water into the water spraying channel so that the water flow impacts the bottom wall of the mineralization tank 1, thereby resuspending the mineral particles settled at the bottom of the mechanical stirring chamber 13 and participating in mineralization.

[0046] In addition, the rotation of the rake frame 71 and the water sprayed from the water spray channel on the rake frame 71 can jointly agitate the mineral particles at the bottom of the mechanical mixing chamber 13, which can further prevent the problem of mineral particles settling in the mechanical mixing chamber 13.

[0047] Optionally, such as Figure 2As shown, the anti-settling device 7 can be a spray gun 72. One end of the spray gun 72 is connected to an air source or a water source, and the other end of the spray gun 72 extends into the mechanical mixing chamber 13 and is arranged near the bottom of the mechanical mixing chamber 13. It can be understood that the spray gun 72 can spray air or water into the bottom of the mechanical mixing chamber 13 to agitate the mineral particles at the bottom of the mechanical mixing chamber 13, thereby preventing the problem of mineral particles settling within the mechanical mixing chamber 13. The spraying end of the spray gun 72 can face the side wall or bottom wall of the mechanical mixing chamber 13.

[0048] In related technologies, mineralization takes place within the mineralization tank of a flotation device. The slurry is introduced from the outside into the tank, and mineralization occurs under the action of gas supply and mechanical agitation. However, the inventors have found that the large space within the mineralization tank results in poor mineralization and flotation effects and low flotation efficiency. To address this, related technologies have proposed installing a parabolic basin-shaped reflective bottom within the mineralization tank. The slurry and gas are supplied into the reflective bottom, where mechanical agitation is performed to achieve bubble mineralization. The reflective bottom reflects the slurry containing mineralized bubbles upwards, thus improving flotation efficiency. However, the inventors have found that the problems of poor mineralization and flotation effects and low efficiency still exist. Through further research, the inventors discovered that compared to mineralization within the tank, the reflective effect of the reflective bottom can improve flotation efficiency to some extent. However, because the top of the reflective bottom is open, the agitated slurry is quickly discharged from the reflective bottom due to the reflection, resulting in a short residence time and thus affecting the mineralization effect.

[0049] To further improve mineralization and flotation effects and increase flotation efficiency, the inventors proposed a confined-area mineralization scheme. Confined-area mineralization refers to mineralization conducted within a relatively enclosed and confined space compared to related technologies. This confined space can also be called a restricted space, confined region, or limited area, or simply confined area. For example, this confined area is smaller and relatively enclosed compared to the inner cavity of the mineralization tank in related technologies, and relatively enclosed compared to the open parabolic reflective bottom in related technologies. During the mineralization process, the slurry and gas are introduced into the confined space, where mechanical stirring is performed. This allows the air to form more bubbles. The bubbles and target particles in the slurry are repeatedly reflected, stirred, and collided with each other within the confined space, increasing the contact time, number of contacts, and number of collisions between the bubbles and target particles. This improves the mineralization and flotation effects, thereby increasing efficiency. Therefore, in this invention, mineralization conducted within a confined space can be called confined-area mineralization.

[0050] In some embodiments, such as Figure 1As shown, the flotation machine also includes a cover plate 6, which is disposed above the mineralization tank 1. The cover plate 6 is opposite to the slurry outlet 12 and spaced apart from the top surface of the mineralization tank 1 to allow the mineralized slurry to flow out. It can be understood that the cover plate 6 and the mineralization tank 1 define a confined mineralization area, including the mechanical stirring chamber 13. By setting the cover plate 6 above the mineralization tank 1, the flotation machine of this embodiment improves the sealing of the mechanical stirring chamber 13, which can prolong the time for the slurry to reflect, rectify, and churn within the mechanical stirring chamber 13, thereby increasing the contact time, number of contacts, and number of impacts between bubbles and target particles, thus improving the mineralization and flotation effect. Furthermore, the flow field disturbances generated by the rotor rotation are blocked by the cover plate 6, which can reduce the turbulence intensity in the lower part of the upper region 42 above the mechanical stirring chamber 13, which is conducive to the rise of mineralized bubbles.

[0051] In other words, the slurry flows more intensely and in a relatively small, enclosed area within the mineralization tank 1 with the cover plate 6, resulting in finer bubbles that are more easily captured by microparticles. The flow of mineralization bubbles is more stable in the lower part of the upper region 42 above the mechanical stirring chamber 13, resulting in more stable adhered particles that are less likely to detach.

[0052] The distance between the cover plate 6 and the top surface of the mineralization tank 1 can be adjusted adaptively according to different types of slurry, and this embodiment of the present invention does not limit this.

[0053] In another example, such as Figure 2 As shown, the cover plate 6 seals the slurry outlet 12 and has a flow hole 61 for connecting the mechanical stirring chamber 13 to the outside of the mechanical stirring chamber 13. It can be understood that the mineralized slurry containing mineralizing bubbles in the mechanical stirring chamber 13 flows out through the flow hole 61. The flotation machine of this embodiment improves the sealing of the mechanical stirring chamber 13 by setting the cover plate 6 above the mineralization tank 1, which can prolong the time of reflection, rectification and turbulence of the slurry in the mechanical stirring chamber 13, so as to increase the contact time, contact number and impact number of bubbles and target particles, thereby improving the mineralization and flotation effect. In addition, the flow field disturbance formed by the rotor rotation is blocked by the cover plate 6, which can reduce the turbulence intensity in the lower part of the upper region 42 above the mechanical stirring chamber 13, which is conducive to the rise of mineralizing bubbles.

[0054] In other words, the slurry flows more intensely in the relatively enclosed and smaller area of ​​the mineralization tank 1 with the cover plate 6, resulting in finer bubbles and making it easier to capture microparticles. The slurry flows more smoothly in the lower part of the upper region 42 above the mechanical stirring chamber 13, the attached particles are more stable and less likely to fall off, and the mineralization bubbles rise smoothly, improving efficiency.

[0055] In some embodiments, such as Figure 6As shown, the rotor 22 includes a disc 222 and multiple blades 223. The disc 222 is mounted on the lower end of the rotating shaft 21, and the multiple blades 223 are spaced apart along the circumferential edge of the disc 222. By arranging the blades 223 in the above-described structure, the flotation machine of this embodiment can improve the turbulence effect of the slurry in the mechanical stirring chamber 13, enhance the capture effect of bubbles on the target minerals, strengthen the internal slurry circulation, and improve the energy utilization rate of the impeller rotation.

[0056] Specifically, the rotating shaft 21 has a gas supply channel 211 for supplying gas to the mechanical stirring chamber 13, and the wheel 222 has a first jet channel 2220 communicating with the gas supply channel 211 in the rotating shaft 21. The first jet outlet of the first jet channel 2220 is formed on the outer circumferential surface of the wheel 222 and is arranged at intervals along the circumference of the wheel 222. The blade 223 has a second jet channel 2230 communicating with the first jet channel, and the second jet outlet of the second jet channel 2230 is formed on the surface of the blade 223. This allows the mechanically stirred mineralizing gas to be injected into the mechanical stirring chamber 13 through multiple jet outlets, which is more conducive to the mixing of the slurry and the mechanically stirred mineralizing gas, thus improving the mineralization effect of the mineralization device.

[0057] In some embodiments, such as Figure 1 As shown, the flotation equipment also includes an aeration device 5. The tank 4 has an upper region 42 and a column separation region. The upper region 42 is located above the mineralization tank 1. The column separation region includes a lower region 41 and a connecting region 43. The lower region 41 is located below the mineralization tank 1, and the connecting region 43 is located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank 4. The aeration device 5 is connected to the lower region 41 and is used to introduce gas into the lower region 41 to perform column separation on the slurry entering the column separation region from the mechanical stirring chamber 13. Thus, the flotation machine of this embodiment realizes the dual functions of a flotation machine and a flotation column, improving the flotation effect.

[0058] Understandably, mineralized foam accumulates in the upper region 42, while the lower region 41 is used for column separation. Mineralized bubbles in the slurry discharged from the mechanical stirring chamber 13 rise into the upper region 42, while the slurry containing other particles enters the lower region 41 through the connecting region 43. The aeration device 5 is connected to the lower region 41 and is used to introduce gas into the lower region 41 for column separation of the slurry entering the lower region 41.

[0059] Optionally, the flotation machine in this embodiment of the present invention may not include the aeration device 5, so that the flotation machine performs flotation only by mechanical stirring.

[0060] For example, such as Figure 1As shown, the bottom of the tank 4 is provided with a discharge port 44. The mineral particles that have not been attached to the air bubbles after column separation (also known as tailings) fall into the bottom of the tank 4 under the action of gravity and are discharged through the discharge port 44.

[0061] Because the connecting area 43 is equipped with a flow guide plate 15, the flow guide plate 15 can guide the slurry containing mineral particles that have not adhered to the air bubbles downwards into the lower area 41, and the flow guide plate 15 can also guide the mineralized air bubbles after column separation upwards into the upper area 42. The flow guide plate 15 can reduce the turbulence in the connecting area 43, avoid the slurry flow from becoming more chaotic, and help improve the mineralization and flotation effect of the flotation machine. For example, there are multiple flow guide plates 15, which are arranged at intervals along the circumference of the mineralization tank 1.

[0062] Optionally, such as Figure 1 As shown, the upper surface of the diversion plate 15 is flush with the top surface of the mineralization tank 1, and the lower surface of the diversion plate 15 is lower than the bottom surface of the mineralization tank 1. Since the upper surface of the diversion plate 15 is flush with the top surface of the mineralization tank 1, interference with the turbulent flow field of the slurry within the mineralization tank 1 can be avoided. Because the lower surface of the diversion plate 15 is lower than the bottom surface of the mineralization tank 1, the diversion plate 15 can be positioned as close as possible downwards to the lower region 41, thereby guiding the mineralized foam after column separation upwards to the upper region 42 and guiding mineral particles not attached to the bubbles downwards into the lower region 41, thus improving the diversion effect of the diversion plate 15.

[0063] In some embodiments, such as Figure 1 As shown, an upper turbulence suppression grid 31 is provided inside the tank 4. The upper turbulence suppression grid 31 is located above the mineralization tank 1 and at a predetermined distance from the mineralization tank 1, and the upper turbulence suppression grid 31 is adjacent to the connecting area 43. This can reduce the degree of turbulence of the slurry above the mineralization tank 1, so that mineralization bubbles can flow smoothly upward to the upper area 42, thereby avoiding the tendency of the slurry flow above the mineralization tank 1 to become more chaotic, which is beneficial to improving the mineralization and flotation effect of the flotation machine.

[0064] Optionally, such as Figure 1 As shown, a lower turbulence suppression grid (not shown) is provided inside the tank 4. The lower turbulence suppression grid is located below the mineralization tank 1 and at a predetermined distance from the mineralization tank 1, and is arranged adjacent to the connecting area 43. This can reduce the turbulence of the slurry at a predetermined position below the mineralization tank 1, so that the slurry that has not been attached to air bubbles can flow smoothly downward to the lower area 41, thus avoiding the tendency of the slurry flow at the predetermined position below the mineralization tank 1 to become more chaotic, which is beneficial to improving the mineralization and flotation effect of the flotation machine.

[0065] In other examples, such as Figure 1As shown, the position of the turbulence suppression grid 3 (upper turbulence suppression grid 31 and lower turbulence suppression grid) is adjustable in the vertical direction. Thus, the flotation machine can adjust the turbulence suppression grid 3 to an appropriate position according to different flotation minerals or flotation effects, thereby expanding the application range of the flotation machine and achieving better turbulence suppression effect.

[0066] In some embodiments, such as Figure 4 and Figure 5 As shown, the rotor 22 is in the form of an impeller, which includes a hub 221, a disk 222, a top plate 224, a bottom plate 225, and blades 223. The blades 223 include an upper blade 2231 and a lower blade 2232.

[0067] A hub 221 is mounted on the lower end of a rotating shaft 21. A disc 222, a top plate, and a bottom plate 225 are mounted on the hub 221, with the disc 222 located between the top plate 224 and the bottom plate 225. Multiple upper blades 2231 and lower blades 2232 are present. Multiple upper blades 2231 are positioned between the upper surface of the disc 222 and the top plate 224, and are arranged at intervals along the circumference of the disc 222. Multiple lower blades 2232 are positioned between the lower surface of the disc 222 and the disc 222, and are also arranged at intervals along the circumference of the disc 222. The upper blades 2231 and lower blades 2232 are either one-to-one or staggered along the circumference of the disc 222.

[0068] Preferably, the upper blade 2231 and the lower blade 2232 are staggered, that is, the upper blade 2231 and the lower blade 2232 are not aligned with each other along the axial direction of the impeller.

[0069] When the impeller rotates, the upper blade 2231 on the upper side of the impeller 222 and the lower blade 2232 on the lower side of the impeller 222 can rotate simultaneously. On the one hand, this can enhance the impeller's suction capacity (the ability to suck slurry from the inlet 11 into the mechanical stirring chamber 13). On the other hand, it can enhance the intensity of internal slurry circulation, improve the mineralization effect, and enhance the selectivity in the flotation process.

[0070] For example, such as Figure 4 and Figure 5 As shown, the upper blade 2231 and the lower blade 2232 are arranged radially, with the number of both upper blade 2231 and lower blade 2232 ranging from 4 to 16, and they are evenly distributed. It should be noted that the number of upper blade 2231 and lower blade 2232 may be equal or unequal, and this application does not limit this.

[0071] Since the upper blade 2231 is located between the upper surface of the impeller 222 and the top plate 224, and the lower blade 2232 is located between the lower surface of the impeller 222 and the impeller 222, the intensity of the internal slurry circulation can be further enhanced, the energy utilization rate of the impeller rotation can be improved, the effect of bubbles capturing target minerals can be enhanced, and the selectivity in the flotation process can be improved.

[0072] For example, the outer periphery of the top plate 224 is substantially the same in size as the outer periphery formed by the plurality of upper blades 2231. The outer periphery of the bottom plate 225 is substantially the same in size as the outer periphery formed by the plurality of lower blades 2232.

[0073] Optionally, such as Figure 3 and Figure 7 As shown, the mechanical stirring chamber 13 is equipped with multiple turbulence-enhancing plates 14. The turbulence-enhancing plates 14 are in contact with the inner wall of the mineralization tank 1 and extend radially along the rotor 22. The multiple turbulence-enhancing plates 14 are arranged circumferentially around the rotor 22 and spaced apart from the rotor 22. Thus, the slurry flowing circumferentially in the mechanical stirring chamber 13 is successively stopped and collided by the multiple turbulence-enhancing plates 14, which enhances the turbulence effect of the slurry in the mechanical stirring chamber 13, thereby improving the mineralization effect.

[0074] For example, such as Figure 7 As shown, the turbulence-enhancing plate 14 has perforated holes 141 extending along its thickness direction. When the impeller rotates, it is easier to generate microbubbles, resulting in better mixing of the slurry and bubbles, which is more conducive to the flotation of fine-grained minerals, with less resistance to slurry flow and less energy dissipation.

[0075] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0078] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A flotation machine, characterized in that, include: Tank body; A mineralization device, comprising a rotor assembly and a mineralization tank, wherein the mineralization tank is disposed within the tank body and has a mechanical stirring chamber, wherein the bottom of the mineralization tank is provided with an inlet for supplying slurry into the mechanical stirring chamber and the top of the mineralization tank is provided with an outlet for discharging slurry, wherein the rotor assembly comprises a rotating shaft and a rotor, wherein the lower end of the rotating shaft extends into the mechanical stirring chamber and the rotor is mounted on the lower end of the rotating shaft and located within the mechanical stirring chamber; An anti-settling device is installed inside the mechanical stirring chamber and located below the rotor, for stirring the mineral particles that have settled at the bottom of the mechanical stirring chamber.

2. The flotation machine according to claim 1, characterized in that, The anti-settlement device includes a rake frame located at the lower end of the rotor and driven by the rotating shaft.

3. The flotation machine according to claim 2, characterized in that, The rotating shaft has an air supply channel for supplying gas into the mechanical stirring chamber. The rake frame is provided with an anti-settling jet channel, which is connected to the air supply channel. The jet nozzle of the anti-settling jet channel is vertically downward or inclined downward toward the bottom wall of the mineralization tank.

4. The flotation machine according to claim 2, characterized in that, The rotating shaft is provided with a water supply channel, and the rake frame is provided with a water spraying channel. The water spraying channel is connected to the water supply channel, and the spray nozzle of the water spraying channel is vertically downward or inclined downward toward the bottom wall of the mineralization tank.

5. The flotation machine according to claim 1, characterized in that, The anti-settlement device includes a spray gun, one end of which is connected to an air source or a water source, and the other end of which extends into the mechanical stirring chamber and is arranged near the bottom of the mechanical stirring chamber.

6. The flotation machine according to claim 1, characterized in that, The flotation machine also includes a cover plate, which is disposed above the mineralization tank. The cover plate is opposite to the slurry outlet and spaced apart from the top surface of the mineralization tank, or the cover plate covers the slurry outlet and is provided with a flow hole for communicating the mechanical stirring chamber with the outside of the mechanical stirring chamber.

7. The flotation machine according to claim 1, characterized in that, The rotor includes a disk and multiple blades. The disk is mounted on the lower end of the rotating shaft, and the multiple blades are spaced apart along the outer periphery of the disk.

8. The flotation machine according to claim 7, characterized in that, The rotating shaft has a gas supply channel for supplying gas into the mechanical stirring chamber. The wheel has a first jet channel communicating with the gas supply channel in the rotating shaft. The first jet outlet of the first jet channel is formed on the outer circumferential surface of the wheel and is arranged at intervals along the circumference of the wheel. The blade has a second jet channel communicating with the first jet channel. The second jet outlet of the second jet channel is formed on the surface of the blade.

9. The flotation machine according to any one of claims 1-8, characterized in that, The flotation machine further includes an aeration device. The tank has an upper region and a column separation region. The upper region is located above the mineralization tank. The column separation region includes a lower region and a connecting region. The lower region is located below the mineralization tank. The connecting region is located between the outer peripheral wall of the mineralization tank and the inner peripheral wall of the tank. The aeration device is connected to the lower region and is used to inject gas into the lower region to perform column separation on the slurry entering the column separation region from the mechanical stirring chamber. A guide plate is provided in the connecting region, and the lower end of the guide plate is lower than the bottom surface of the mineralization tank.

10. The flotation machine according to claim 9, characterized in that, The tank is provided with an upper turbulence suppression grid, which is located above the mineralization tank and at a predetermined distance from the mineralization tank. The upper turbulence suppression grid is adjacent to the connecting area. And / or, the tank is provided with a lower turbulence suppression grid, the lower turbulence suppression grid is located below the mineralization tank and spaced at a preset distance from the mineralization tank, and the lower turbulence suppression grid is arranged adjacent to the connected area.

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