Flotation machine

Abstract

The flotation machine comprises a groove body, a mineralization device and an anti-deposition device, a discharging opening is formed in the lower end of the groove body, the mineralization device comprises a rotor assembly and a mineralization groove, the mineralization groove is formed in the groove body, a mechanical stirring cavity is formed in the mineralization groove, and the anti-deposition device is arranged in the mechanical stirring cavity. The bottom of the mineralization tank is provided with a pulp inlet used for supplying ore pulp into the mechanical stirring cavity, the top of the mineralization tank is provided with a pulp outlet used for discharging the ore pulp, the rotor assembly comprises a rotating shaft and a rotor, the rotating shaft extends into the mechanical stirring cavity from the pulp outlet, and the rotor is installed on the rotating shaft and located in the mechanical stirring cavity; the anti-deposition device is installed on the tank body and used for stirring ore pulp at the bottom of an inner cavity of the tank body to prevent ore grain deposition. The flotation machine can reduce the probability that ore grains which are not attached to bubbles are deposited at the bottom of the groove body, and normal operation of the flotation machine can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flotation, specifically, a flotation machine. BACKGROUND

[0002] Flotation is a widely used mineral processing method. When flotation is carried out using a flotation device, ore pulp is introduced into a flotation tank and mechanically agitated or aerated to mineralize. After mineralization, target particles selectively adhere to bubbles to form mineralized bubbles, which float upwards, while other particles not adhered to the bubbles are discharged from the bottom of the flotation tank with the ore pulp, thereby achieving the purpose of separating minerals. In related technologies, other particles not adhered to the bubbles tend to deposit at the bottom of the tank body of the flotation machine, thereby easily blocking the discharge port and affecting the normal operation of the flotation machine. SUMMARY

[0003] The utility model aims to at least solve one of the technical problems in the related art to some extent.

[0004] To this end, the utility model embodiment provides a flotation machine, which can reduce the probability of mineral particles not adhered to bubbles depositing at the bottom of the tank body, thereby facilitating normal operation of the flotation machine.

[0005] The flotation machine according to the utility model embodiment comprises a tank body, a discharge port provided at the lower end of the tank body, a mineralization device comprising a rotor assembly and a mineralization tank, the mineralization tank being arranged in the tank body, the mineralization tank having a mechanical agitation chamber therein, the bottom of the mineralization tank being provided with an ore pulp inlet for supplying ore pulp into the mechanical agitation chamber, the top of the mineralization tank being provided with an ore pulp outlet for discharging ore pulp, the rotor assembly comprising a rotating shaft and a rotor, the rotating shaft extending into the mechanical agitation chamber, the rotor being mounted on the rotating shaft and located in the mechanical agitation chamber, and a deposition prevention device mounted on the tank body and used for agitating ore pulp at the bottom of the tank body to prevent mineral particles from depositing.

[0006] When mineralization is carried out, ore pulp is introduced into the mineralization tank through the ore pulp inlet in a direction from bottom to top, the rotor rotates and agitates in the mechanical agitation chamber to disperse air and form tiny bubbles, mineral particles adhere to the bubbles to form mineralized bubbles, ore pulp containing mineralized bubbles and mineral particles not adhered to the bubbles can flow out of the ore pulp outlet of the mineralization tank, and the mineralized bubbles can flow upwards. Since the deposition prevention device is mounted on the tank body and used for agitating ore pulp at the bottom of the tank body to prevent mineral particles from depositing, the problem of the discharge port being blocked due to deposition of mineral particles can be avoided, thereby facilitating normal operation of the flotation machine.

[0007] In some embodiments, the lower end of the rotating shaft extends downwardly to the mineralization tank and to the bottom of the tank body, and the anti-settlement device comprises an anti-settlement rake arranged at the bottom of the inner cavity of the tank body and connected to the lower end of the rotating shaft to be driven by the rotating shaft.

[0008] In some embodiments, the anti-settlement device comprises a driving motor and an anti-settlement rake arranged at the bottom of the inner cavity of the tank body and connected to the driving motor, and the driving motor is used to drive the anti-settlement rake to rotate around the central axis of the tank body.

[0009] In some embodiments, the lower end of the tank body has a conical section with a gradually decreasing cross section along the upward-to-downward direction, the discharge port is arranged at the lower end of the conical section, and the anti-settlement rake is arranged in the conical section.

[0010] In some embodiments, the included angle between the conical surface of the conical section and the horizontal plane is α, where 15°≤α≤60°.

[0011] In some embodiments, the rotating shaft has a gas supply channel for supplying mechanical stirring gas into the mechanical stirring cavity, and the rotor is provided with a first gas injection hole in communication with the gas supply channel.

[0012] In some embodiments, the rotating shaft has a gas supply channel for supplying mechanical stirring gas into the mechanical stirring cavity, the anti-settlement rake is provided with a second gas injection hole in communication with the gas supply channel, and the opening direction of the second gas injection hole is toward the inner wall of the tank body.

[0013] In some embodiments, the rotating shaft is provided with a water supply channel, the anti-settlement rake is provided with a water injection channel in communication with the water supply channel, and the opening direction of the water injection hole is toward the inner wall of the tank body.

[0014] In some embodiments, the anti-settlement device comprises a spray gun, one end of the spray gun is connected to a gas source or a water source, and the spray end of the spray gun extends into the bottom of the tank body for spraying gas or water to the bottom of the tank body.

[0015] In some embodiments, the flotation machine further comprises an aeration device, the tank body has an upper region and a column selection region, the upper region is located above the mineralization tank, the column selection region comprises a lower region and a communication region, the lower region is located below the mineralization tank, the communication region is located between the outer peripheral wall of the mineralization tank and the inner peripheral wall of the tank body, the aeration device is in communication with the lower region and is used for filling gas into the lower region to perform column selection on the slurry entering the column selection region from the mechanical stirring cavity in the column selection region, a flow guide plate is arranged in the communication region, the lower end of the flow guide plate is lower than the bottom surface of the mineralization tank, and turbulence suppression grilles adjacent to the mineralization tank are arranged in the upper region and the lower region respectively. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of the flotation machine of an embodiment of the present application.

[0017] Figure 2 is a schematic view of the flotation machine of another embodiment of the present application.

[0018] Figure 3 is a schematic view of the mineralization device of an embodiment of the present application.

[0019] Figure 4 is a partial sectional view of the mineralization device of an embodiment of the present application.

[0020] Figure 5 is a schematic view of the impeller of an embodiment of the present application.

[0021] Figure 6 is a partial sectional view of the impeller of an embodiment of the present application.

[0022] Figure 7 is a schematic view of the turbulence enhancement plate of an embodiment of the present application.

[0023] REFERENCE SIGNS:

[0024] 1, mineralization tank; 11, slurry inlet; 12, slurry outlet; 13, mechanical stirring cavity; 14, turbulence enhancement plate; 141, hollow hole; 15, flow guide plate;

[0025] 2, rotor assembly; 21, rotating shaft; 211, gas supply channel; 22, rotor; 221, hub; 222, wheel disc; 223, blade; 2231, upper blade; 2232, lower blade; 224, top plate; 225, bottom plate;

[0026] 3, turbulence suppression grille;

[0027] 4, tank body; 41, lower region; 42, upper region; 43, communication region; 44, discharge port; 45, conical section;

[0028] 5. Inflation device;

[0029] 6. Anti-settling device; 61. Anti-settling rake frame; 62. Spray gun. Detailed Implementation

[0030] 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.

[0031] The following is a reference appendix. Figures 1 to 7 A flotation machine according to an embodiment of the present invention is described.

[0032] like Figures 1 to 7 As shown, the flotation machine of this utility model embodiment includes: a tank 4, a mineralization device and an anti-sedimentation device 6. The mineralization device includes a rotor assembly 2 and a mineralization tank 1. The lower end of the tank 4 is provided with a discharge port 44.

[0033] 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.

[0034] 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).

[0035] The rotor assembly 2 includes a shaft 21 and a rotor 22. The shaft 21 extends from the slurry outlet 12 into the mechanical stirring chamber 13. The rotor 22 is mounted on the shaft 21 and located inside the mechanical stirring chamber 13. The anti-deposition device 6 is mounted on the tank 4 and is used to stir the slurry at the bottom of the inner cavity of the tank 4 to prevent mineral particles from depositing.

[0036] The rotor 22 is driven to rotate by the shaft 21 to perform mechanical stirring and mineralization within the mechanical stirring chamber 13. The air used for mineralization is preferably supplied into the mechanical stirring chamber 13 through the shaft 12. Alternatively, a separate air supply line can be provided to supply air into the mechanical stirring chamber 13.

[0037] According to the embodiment of the utility model, when mineralization is carried out, the slurry is passed into the mineralization tank 1 along the direction from bottom to top through the slurry inlet 11, the rotor 22 rotates and stirs in the mechanical stirring chamber 13, air is dispersed to form tiny bubbles, mineral particles adhere to the bubbles to form mineralized bubbles, the slurry containing the mineralized bubbles and the mineral particles not adhered to the bubbles can flow out from the slurry outlet 12 of the mineralization tank 1, and the mineralized bubbles flow upwards. Since the anti-deposition device 6 is installed on the tank body 4, the anti-deposition device 6 is used to stir the slurry at the bottom of the inner cavity of the tank body 4 to prevent the deposition of the mineral particles, thereby the problem of blockage of the discharge port 44 caused by the deposition of the mineral particles can be avoided, and the normal operation of the flotation machine can be ensured.

[0038] When the bottom of the tank body 4 deposits a large amount of mineral particles, the accumulated mineral particles block the discharge port 44, and then the mineral particles not adhered to the bubbles cannot be discharged from the tank body 4, which affects the normal operation of the flotation machine. The flotation machine of the embodiment of the utility model can improve the smoothness of the discharge of the mineral particles not adhered to the bubbles by setting the anti-deposition device 6.

[0039] It can be understood that mineralization refers to a selective adhesion process of target particles and bubbles, after mineralization, the slurry includes mineralized bubbles (the mineralized bubbles can be called mineralized foam after aggregation, and in the following description, the mineralized bubbles and the mineralized foam can be used interchangeably) and other particles not adhered to the bubbles, the mineralized bubbles are target particles adhered to the bubbles, and here, the target particles adhered to the bubbles can also be called mineralized particles, and the other particles can include target particles not adhered to the bubbles, non-target mineral particles not adhered to the bubbles, and tailing particles.

[0040] Optionally, the lower end of the rotating shaft 21 penetrates downward to the mineralization tank 1 and extends to the bottom of the tank body 4, the anti-deposition device 6 includes an anti-deposition rake frame 61, the anti-deposition rake frame 61 is arranged at the bottom of the inner cavity of the tank body 4 and connected with the lower end of the rotating shaft 21 to be driven by the rotating shaft 21. When the anti-deposition rake frame 61 rotates, the mineral particles deposited at the bottom of the tank body 4 can be stirred to be discharged from the discharge port 44 smoothly.

[0041] It can be understood that the anti-deposition rake frame 61 and the rotor 22 are both installed on the rotating shaft 21, and when the rotating shaft 21 rotates, the anti-deposition rake frame 61 and the rotor 22 can be driven to rotate at the same time. In other words, the anti-deposition rake frame 61 and the rotor 22 share one power source, so that the structure of the flotation machine can be more compact, and the cost is lower.

[0042] In another example, as shown in FIG. 6, the anti-deposition device 6 includes an anti-deposition rake frame 61, the anti-deposition rake frame 61 is arranged at the bottom of the inner cavity of the tank body 4 and connected with the rotating shaft 21 to be driven by the rotating shaft 21. Figure 2As shown, the anti-deposition device 6 comprises a driving motor and an anti-deposition rake frame 61, the anti-deposition rake frame 61 is arranged at the bottom of the inner cavity of the tank body 4 and is connected with the driving motor, and the driving motor is used to drive the anti-deposition rake frame 61 to rotate around the central axis of the tank body 4. It can be understood that the anti-deposition rake frame 61 is controlled independently by the driving motor, that is, the rotation of the rotor 22 and the rotation of the anti-deposition rake frame 61 do not interfere with each other, so as to improve the flexibility of the anti-deposition device 6 during operation.

[0043] In some embodiments, as shown in Figure 1 and Figure 2 As shown, the lower end of the tank body 4 has a conical section 45, the cross section of the conical section 45 gradually decreases along the direction from top to bottom, the discharge port 44 is arranged at the lower end of the conical section 45, and the anti-deposition rake frame 61 is arranged in the conical section 45. The flotation machine of the embodiment of the utility model can guide the mineral particles not attached to the bubbles by designing the lower end of the tank body 4 as the conical section 45, so as to improve the smoothness of the mineral particles not attached to the bubbles discharged from the discharge port 44 and avoid the problem of the bottom of the tank body 4 being silted up.

[0044] In addition, since the anti-deposition rake frame 61 is arranged in the conical section 45, when the anti-deposition rake frame 61 works, the anti-deposition rake frame 61 can rotate around the axis of the conical section 45 as the rotation axis 21 and clean the inner wall of the conical section 45, so as to improve the dredging efficiency of the flotation machine.

[0045] Optionally, as shown in Figure 1 The included angle between the conical surface of the conical section 45 and the horizontal plane is α, and 15°≤α≤60°. For example, the included angle α between the conical surface of the conical section 45 and the horizontal plane is 15°, 30°, 40° or 60°. The inventors of the embodiment of the utility model find through research and verify through experiments that when the included angle between the conical surface of the conical section 45 and the horizontal plane adopts the above numerical range, the smoothness of the mineral particles not attached to the bubbles discharged from the discharge port 44 can be further improved, and the problem of the bottom of the tank body 4 being silted up can be avoided.

[0046] In other examples, the bottom of the tank body 4 can also be in any shape such as a pyramid or a wedge, so as to guide the tailings, thereby improving the efficiency of the tailings discharged from the discharge port 44.

[0047] In some embodiments, as shown in Figure 1 and Figure 2As shown, the rotating shaft 21 has a gas supply channel 211 for supplying gas for mechanical stirring into the mechanical stirring cavity 13, and the rotor 22 is provided with a first gas injection hole (not shown) which is in communication with the gas supply channel 211. It can be understood that the gas in the mechanical stirring cavity 13 is supplied through the gas supply channel 211 in the rotating shaft 21, so that the rotating shaft 21 can not only drive the rotor 22 to rotate, but also provide the mechanical stirring cavity 13 with gas for mechanical stirring, and the use effect is better.

[0048] Further, the anti-deposition rake 61 is provided with a second gas injection hole (not shown) which is in communication with the gas supply channel 211, and the opening direction of the second gas injection hole is towards the inner wall of the tank body 4. In this way, the inner wall of the tank body 4 can be impacted by the gas to re-suspend the ore particles deposited on the bottom of the tank body 4, so as to avoid the problem of ore particle accumulation on the bottom of the tank body 4.

[0049] In another example, the rotating shaft 21 is provided with a water supply channel (not shown), and the anti-deposition rake 61 is provided with a water injection channel (not shown) which is in communication with the water supply channel, and the opening direction of the water injection hole is towards the inner wall of the tank body 4. It can be understood that the external water source can be connected to the water supply channel, and the water supply channel can introduce the water source into the water injection channel to impact the bottom wall of the tank body 4 by water flow, so as to flush the ore particles not attached to the bubbles out of the discharge port 44, thereby avoiding the problem of ore particle accumulation on the bottom of the tank body 4.

[0050] Preferably, as Figure 1 shown, the anti-deposition device 6 includes a spray gun 62, one end of the spray gun 62 is connected to a gas source or a water source, and the spray end of the spray gun 62 extends into the bottom of the tank body 4 for spraying gas or water to the bottom of the tank body 4. It can be understood that the spray gun 62 can spray gas flow or water flow into the bottom of the tank body 4 to agitate the ore particles on the bottom of the tank body 4, and the gas flow or water flow impacts the bottom wall of the tank body 4 to flush the ore particles not attached to the bubbles out of the discharge port 44, thereby avoiding the problem of ore particle accumulation on the bottom of the tank body 4. The spray gun 62 does not need to be provided with a driving motor on the tank body, and is convenient to use and low in cost.

[0051] In some embodiments, as Figure 1 and Figure 2 shown, the flotation machine further includes an aeration device 5, the tank body 4 has an upper region 42 and a column selection region, the upper region 42 is located above the mineralization tank 1, and the column selection region includes a lower region 41 and a communication region 43, the lower region 41 is located below the mineralization tank 1, and the communication region 43 is located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank body 4, the aeration device 5 is in communication with the lower region 41 and is used for filling gas into the lower region 41 to perform column selection on the ore slurry entering the column selection region from the mechanical stirring cavity 13 in the column selection region, so that the flotation device of the embodiment of the present application realizes the dual functions of the flotation machine and the flotation column, and improves the flotation effect.

[0052] It can be understood that the mineralized bubbles are gathered in the upper region 42, and the lower region 41 is used for column flotation. The mineralized bubbles in the slurry discharged from the mechanical stirring cavity 13 enter the upper region 42 upward, the slurry containing other particles enters the lower region 41 through the communication region 43, the aeration device 5 is in communication with the lower region 41 and is used for charging gas into the lower region 41 to perform column flotation on the slurry entering the lower region 41, and the driving device 35 is arranged above the tank 4 and is connected with the rotating shaft 21 of the mineralization device to drive the rotating shaft 21 to rotate.

[0053] Optionally, as shown in Figure 1 and Figure 2 , the communication region 43 is provided with a flow guide plate 15, and the lower end of the flow guide plate 15 is lower than the bottom surface of the mineralization tank 1. Due to the fact that the communication region 43 is provided with the flow guide plate 15, the flow guide plate 15 can guide the mineral particles not attached to the bubbles downward into the lower region 41, and the flow guide plate 15 can also guide the mineralized bubbles after column flotation upward into the upper region 42. The flow guide plate 15 can guide the slurry containing the mineral particles not attached to the bubbles downward into the lower region 41, and the flow guide plate 15 can also guide the mineralized bubbles after column flotation upward into the upper region 42. The flow guide plate can reduce the turbulence intensity in the communication region 43, and is conducive to improving the mineralization and flotation effect of the flotation machine.

[0054] Optionally, the upper surface of the flow guide plate 15 is flush with the top surface of the mineralization tank 1, and the lower surface of the flow guide plate 15 is lower than the bottom surface of the mineralization tank 1. Due to the fact that the upper surface of the flow guide plate 15 is flush with the top surface of the mineralization tank 1, the flow guide plate 15 can avoid interfering with the turbulent flow field of the slurry in the mineralization tank 1. Due to the fact that the lower surface of the flow guide plate 15 is lower than the bottom surface of the mineralization tank 1, the flow guide plate 15 can be as close as possible to the lower region 41 downward, so as to guide the mineralized bubbles after column flotation upward into the upper region 42, and guide the mineral particles not attached to the bubbles downward into the lower region 41, and improve the flow guiding effect of the flow guide plate 15.

[0055] Optionally, as shown in Figure 1 and Figure 2 , the upper region 42 and the lower region 41 are respectively provided with a turbulence suppression grid 3 adjacent to the mineralization tank 1. The turbulence suppression grid 3 can constrain the upper region 42 and the lower region 41, so as to avoid the trend that the slurry flow in the region tends to be more chaotic, and is conducive to improving the mineralization and flotation effect of the flotation machine.

[0056] For example, the position of the turbulence suppression grid 3 in the up-down direction is adjustable, so that the flotation machine can adjust the turbulence suppression grid 3 to an appropriate position according to different flotation minerals or flotation effects, so as to expand the application range of the flotation machine, and the flow guiding effect is better.

[0057] In some embodiments, as shown in Figures 3 to 5As shown, the rotor 22 is an impeller, which comprises a hub 221, a disc 222, a top plate 224, a bottom plate 225 and blades 223, the blades 223 comprising upper blades 2231 and lower blades 2232. The hub 221 is mounted at the lower end of the rotating shaft 21, the disc 222, the top plate 224 and the bottom plate 225 are mounted on the hub 221, the disc 222 is located between the top plate 224 and the bottom plate 225, and the upper blades 2231 and the lower blades 2232 are both multiple, the multiple upper blades 2231 are arranged between the upper surface of the disc 222 and the top plate 224 and are spaced along the circumference of the disc 222, and the multiple lower blades 2232 are arranged between the lower surface of the disc 222 and the disc 222 and are spaced along the circumference of the disc 222. The upper blades 2231 and the lower blades 2232 are one-to-one corresponding or staggered along the circumference of the disc 222. Preferably, the upper blades 2231 and the lower blades 2232 are staggered, that is, the upper blades 2231 and the lower blades 2232 are not aligned with each other along the axial direction of the impeller.

[0058] When the impeller rotates, the upper blades 2231 on the upper side of the disc 222 and the lower blades 2232 on the lower side of the disc 222 can rotate at the same time, which can enhance the pulp suction capacity of the impeller (the capacity of sucking the pulp from the pulp inlet 11 into the mechanical stirring chamber 13), on the one hand, and can enhance the strength of the internal pulp circulation, improve the mineralization effect and enhance the selectivity in the flotation process.

[0059] For example, the upper blades 2231 and the lower blades 2232 are distributed in a radial and radiated manner, and the number of the upper blades 2231 and the lower blades 2232 is between 4-16 and is uniformly arranged. It should be noted that the number of the upper blades 2231 and the lower blades 2232 can be equal or not equal, which is not limited in the embodiments of the present application.

[0060] Since the upper blades 2231 are arranged between the upper surface of the disc 222 and the top plate 224, and the lower blades 2232 are arranged between the lower surface of the disc 222 and the disc 222, the strength of the internal pulp circulation can be further enhanced, the energy utilization rate of the impeller rotation can be improved, which is beneficial to enhancing the capturing effect of the bubbles on the target minerals and enhancing the selectivity in the flotation process.

[0061] For example, the outer contour of the top plate 224 is substantially consistent with the size of the outer contour surrounded by the multiple upper blades 2231. The outer contour of the bottom plate 225 is substantially consistent with the size of the outer contour surrounded by the multiple lower blades 2232.

[0062] Optionally, as Figure 4 and Figure 7As shown, the mechanical stirring cavity 13 is provided with a plurality of turbulence enhancement plates 14, the turbulence enhancement plates 14 are connected with the inner wall of the mineralization tank 1 and extend along the radial direction of the rotor 22, the plurality of turbulence enhancement plates 14 are arranged in the circumferential direction of the rotor 22 and are spaced apart from the rotor 22. Thus, the ore pulp flowing in the circumferential direction in the mechanical stirring cavity 13 is sequentially blocked and collided by the plurality of turbulence enhancement plates 14, the turbulence effect of the ore pulp in the mechanical stirring cavity 13 is enhanced, and the mineralization effect is improved.

[0063] For example, as shown in Figure 7 As shown, the turbulence enhancement plate 14 is provided with a hollow hole 141 penetrating in the thickness direction thereof. When the impeller rotates, it is easier to produce tiny bubbles, so that the circulating mixing effect of the ore pulp and the bubbles is better, which is more conducive to the mineralization of fine-grained minerals, the resistance of the ore pulp flow is smaller, and the energy dissipation is less.

[0064] In the description of the present application, it should be understood that the orientation or positional relationship indicated by 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" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0065] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0066] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0068] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0069] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A flotation machine, characterized in that The flotation machine comprises: a tank body, a discharge port being arranged at a lower end of the tank body; a mineralization device, the mineralization device comprising a rotor assembly and a mineralization tank, the mineralization tank being arranged in the tank body, the mineralization tank having a mechanical stirring cavity therein, a pulp inlet being arranged at a bottom of the mineralization tank for supplying pulp into the mechanical stirring cavity, a pulp outlet being arranged at a top of the mineralization tank for discharging pulp, the rotor assembly comprising a rotor shaft and a rotor, the rotor shaft extending into the mechanical stirring cavity, the rotor being mounted on the rotor shaft and located in the mechanical stirring cavity; a deposition-preventing device, the deposition-preventing device being mounted on the tank body for agitating pulp at a bottom of the tank body to prevent deposition of mineral particles.

2. The flotation machine of claim 1, characterized in that A lower end of the rotor shaft extends downwardly out of the mineralization tank and extends to a bottom of the tank body, the deposition-preventing device comprising a deposition-preventing rake, the deposition-preventing rake being arranged at the bottom of the tank body and connected to the lower end of the rotor shaft to be driven by the rotor shaft.

3. The flotation machine of claim 1, characterized in that The deposition-preventing device comprises a driving motor and a deposition-preventing rake, the deposition-preventing rake being arranged at the bottom of the tank body and connected to the driving motor, the driving motor being used to drive the deposition-preventing rake to rotate around a central axis of the tank body.

4. A flotation machine according to claim 2 or 3, characterised in that The lower end of the tank body has a conical section, a cross section of the conical section gradually decreases along a direction from top to bottom, the discharge port is arranged at a lower end of the conical section, and the deposition-preventing rake is arranged in the conical section.

5. The flotation machine of claim 4, characterized in that An included angle between a conical surface of the conical section and a horizontal plane is α, wherein 15°≤α≤60°.

6. The flotation machine of claim 2, wherein, The rotor shaft has a gas supply channel therein for supplying gas for mechanical stirring into the mechanical stirring cavity, and the rotor has a first gas injection hole therein, the first gas injection hole being in communication with the gas supply channel.

7. The flotation machine of claim 2, wherein, The rotor shaft has a gas supply channel therein for supplying gas for mechanical stirring into the mechanical stirring cavity, the deposition-preventing rake has a second gas injection hole therein, the second gas injection hole being in communication with the gas supply channel, and an opening direction of the second gas injection hole is toward an inner wall of the tank body.

8. The flotation machine of claim 2, wherein, The rotor shaft has a water supply channel therein, the deposition-preventing rake has a water injection channel therein, the water injection channel being in communication with the water supply channel, and an opening direction of the water injection hole is toward the inner wall of the tank body.

9. The flotation machine of claim 1, wherein, The deposition-preventing device comprises a spray gun, one end of the spray gun being connected to a gas source or a water source, and an ejection end of the spray gun extending into the bottom of the tank body for spraying gas or water to the bottom of the tank body.

10. The flotation machine of claim 1, characterized in that, The flotation machine further comprises an aeration device, the tank body has an upper region and a column selection region, the upper region being located above the mineralization tank, the column selection region comprising a lower region and a communication region, the lower region being located below the mineralization tank, and the communication region being located between an outer peripheral wall of the mineralization tank and an inner peripheral wall of the tank body, the aeration device being in communication with the lower region for filling gas into the lower region to perform column selection on pulp entering the column selection region from the mechanical stirring cavity in the column selection region, a flow guide plate being arranged in the communication region, a lower end of the flow guide plate being lower than a bottom surface of the mineralization tank, and turbulence suppression grilles being respectively arranged in the upper region and the lower region adjacent to the mineralization tank.

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