Multistage mineralization flotation equipment

Abstract

The multi-stage mineralization flotation equipment comprises a tank body, a mineralization device, an air inflation device and a flow guide assembly, an inner cavity of the tank body comprises an upper portion area, a mechanical stirring area and a column selection area, the mineralization device comprises a rotor assembly and a mineralization tank, the mineralization tank is internally provided with a mechanical stirring cavity, the mineralization tank is arranged in the tank body, and the air inflation device is arranged in the mineralization tank. The upper area is located above the mineralization tank, the column selection area comprises a lower area and a communication area, the lower area is located below the mineralization tank, the communication area is located between the outer circumferential wall of the mineralization tank and the inner circumferential wall of the tank body, the rotor assembly comprises a rotating shaft and a rotor, and the rotor is located in the mechanical stirring cavity and installed at the lower end of the rotating shaft; the inflation device is communicated with the lower area, the upper end of the flow guide assembly is communicated with the upper area, the lower end of the flow guide assembly is communicated with the lower area, and the flow guide assembly is used for conveying mineralized bubbles in the lower area to the upper area. The multistage mineralization flotation equipment is good in flotation effect and high in flotation efficiency.

Description

Technical Field

[0001] The present invention relates to the field of flotation technology, in particular to a multi-stage mineralization flotation device. Background Art

[0002] Flotation is a widely used mineral processing method, which usually includes mechanical stirring flotation and aeration flotation. The purpose of mechanical stirring or aeration is to break up the air into fine bubbles and mix them with the slurry, so that the target mineral particles selectively attach to the bubbles to form mineralized bubbles, and the mineralized bubbles float up, while the mineral particles that are not attached to the bubbles are discharged from the bottom of the flotation tank with the slurry, thereby achieving the purpose of separating minerals.

[0003] The related art proposes to combine a mechanical stirring flotation machine and an aerated flotation column for flotation to improve the flotation effect. However, the combined flotation in the related art has problems such as unreasonable equipment structure design, mechanical stirring flotation and aerated flotation affecting each other, thus affecting the flotation effect and flotation efficiency. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a multi-stage mineralization flotation device, which has a reasonable structural design, good flotation effect, and high flotation efficiency.

[0006] The multi-stage mineralization flotation equipment of the embodiment of the present invention comprises: a trough body, the inner cavity of the trough body comprises an upper region, a mechanical stirring region and a column selection region; a mineralization device, the mineralization device comprises a rotor assembly and a mineralization trough, the mineralization trough has a mechanical stirring chamber constituting the mechanical stirring region, the bottom of the mineralization trough is provided with a slurry inlet for supplying slurry into the mechanical stirring chamber, the top of the mineralization trough is provided with a slurry outlet for discharging slurry, the mineralization trough is arranged in the trough body, the upper region is located above the mineralization trough, the column selection region comprises a lower region and a communication region, the lower region is located below the mineralization trough, the communication region is located between the outer peripheral wall of the mineralization trough and the inner peripheral wall of the trough body, the rotor assembly comprises a rotating shaft and a rotor, the rotating shaft The lower end of the trough extends into the mechanical stirring chamber, the rotor is located in the mechanical stirring chamber and is installed at the lower end of the rotating shaft to be driven to rotate by the rotating shaft to perform mechanical stirring mineralization in the mechanical stirring chamber; an aeration device, the aeration device is connected to the lower area, and is used to fill gas into the lower area, so as to perform column selection on the slurry entering the column selection area from the mechanical stirring chamber in the column selection area; a driving device, the driving device is arranged above the trough body and is connected to the rotating shaft to drive the rotating shaft and the rotor to rotate; a guide assembly, the upper end of the guide assembly is connected to the upper area, and the lower end of the guide assembly is connected to the lower area, and the guide assembly is used to transport the mineralized bubbles in the lower area to the upper area.

[0007] According to the multi-stage mineralization flotation equipment of the embodiment of the present invention, during mineralization, the slurry is introduced into the mineralization tank from bottom to top through the slurry inlet, and the rotor rotates and stirs in the mechanical stirring chamber to generate mineralization foam, which can flow out from the slurry outlet of the mineralization tank and flow upward to the upper area. Other mineral particles that are not attached to the bubbles flow out from the slurry outlet of the mineralization tank with the slurry, and under the action of gravity, they enter the lower area through the connecting area downward, and under the action of air supplied by the inflating device, other mineral particles that are not attached to the bubbles can be column-selected in the lower area, and the mineralized bubbles after column selection flow upward from the lower area to the upper area through the guide assembly, and the tailings after column selection fall to the bottom of the tank body under the action of gravity and are discharged. Since other mineral particles that are not attached to the bubbles enter the lower area downward through the connecting area, and the mineralized foam after column selection enters the upper area upward through the guide assembly, the problem of convection interference between the two is avoided, so that the flotation effect is good and the flotation efficiency is high.

[0008] In some embodiments, the flow guide component is disposed in the trough body, the lower end of the flow guide component is located in the lower area, and the upper end of the flow guide component extends upward through the connecting area into the upper area.

[0009] In some embodiments, the flow guide component is disposed outside the trough body, the lower end of the flow guide component is communicated with the lower region, and the upper end of the flow guide component is communicated with the upper region.

[0010] In some embodiments, the flow guide assembly includes a flow guide tube and a flow guide pump, and the flow guide pump is installed on the flow guide tube.

[0011] In some embodiments, the flow guide component includes a flow guide pipe, and the lower end of the flow guide pipe is trumpet-shaped.

[0012] In some embodiments, the upper region includes a transport separation zone and a foam zone, the foam zone is located at the top of the upper region, the transport separation zone is located substantially in the middle of the upper region, and the upper end of the guide component is connected to the transport separation zone.

[0013] In some embodiments, the multi-stage mineralization flotation equipment further includes a pre-mineralization device, which is disposed outside the tank body and is used to pre-mineralize the slurry. The pre-mineralization device is connected to the slurry inlet of the mineralization tank.

[0014] In some embodiments, the mineralization device further comprises a plurality of turbulence reinforcement plates, wherein the plurality of turbulence reinforcement plates are arranged at intervals along the circumference of the mechanical stirring chamber, and the turbulence reinforcement plates are connected to the inner wall of the mechanical stirring chamber.

[0015] In some embodiments, the mineralization device further comprises a plurality of drain plates, wherein the drain plates are arranged in the connecting area, and the plurality of drain plates are arranged at intervals along the circumference of the mineralization trough, wherein the upper surface of the drain plates is flush with the top surface of the mineralization trough, and the lower surface of the drain plates is lower than the bottom surface of the mineralization trough, and the drain plates comprise a drain plate body and a wing baffle provided on the drain plate body, wherein the drain plate body is positioned in the up and down direction, and the wing baffle extends obliquely downward from the drain plate body.

[0016] In some embodiments, the tank body is provided with a turbulence suppression grille located in the upper region and / or the lower region, and the position of the turbulence suppression grille in the up-down direction is adjustable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a multi-stage mineralization flotation device according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of a multi-stage mineralization flotation device according to another embodiment of the present invention.

[0019] Figure 3 It is a schematic diagram of a multi-stage mineralization flotation device according to another embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of a mineralization device of a multi-stage mineralization flotation equipment according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic diagram of a mineralization device of a multi-stage mineralization flotation equipment according to an embodiment of the present invention.

[0022] Figure 6 It is a partial cross-sectional schematic diagram of a mineralization device of a multi-stage mineralization flotation equipment according to an embodiment of the present invention.

[0023] Figure 7 Schematic diagram of a rotor of a multi-stage mineralization flotation device according to an embodiment of the present invention.

[0024] Figure 8 It is a partial cross-sectional schematic diagram of a rotor of a multi-stage mineralization flotation device according to an embodiment of the present invention.

[0025] Fig. 9 It is a schematic diagram of a rotor of a multi-stage mineralization flotation device according to another embodiment of the present invention.

[0026] Fig.10 Schematic diagram of a turbulence reinforcement plate of a multi-stage mineralization flotation device according to an embodiment of the present invention.

[0027] Fig.11 It is a top view schematic diagram of a tank body and a bubble scraping device of a multi-stage mineralization flotation equipment according to an embodiment of the present invention.

[0028] Fig.12 Schematic diagram of a rake frame of a multi-stage mineralization flotation device according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1. Mineralization tank; 11. Slurry inlet; 12. Slurry outlet; 13. Mechanical stirring chamber; 14. Line segment; 15. Turbulence reinforcement plate; 151. Second hollow hole; 16. Drainage plate;

[0031] 2. rotor assembly; 21. rotating shaft; 211. air supply channel; 22. rotor; 221. hub; 222. wheel disc; 2220. jet channel; 223. blade; 2231. upper blade; 2232. lower blade; 2233. first hollow hole; 2234. vertical section; 2235. arc section; 224. top plate; 225. bottom plate;

[0032] 31. Cover plate; 311. Flow hole; 32. Feed pipe; 33. Feed box; 34. Anti-settling assembly; 341. Rake frame; 342. Spray gun; 35. Drive device; 36. Pre-mineralization device; 37. Turbulence suppression grid;

[0033] 4. Tank body; 41. Lower area; 42. Upper area; 421. Transport and separation area; 422. Foam area; 43. Connecting area; 44. Discharge port;

[0034] 5. Inflatable device;

[0035] 6. Scraping device; 61. Scraper;

[0036] 7. Flow guide assembly; 71. Flow guide pipe. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] Please refer to the following Figures 1 to 12 A multi-stage mineralization flotation device according to an embodiment of the present invention is described.

[0039] like Figures 1 to 5 As shown, the multi-stage mineralization flotation equipment of the embodiment of the present invention includes: a tank body 4, a mineralization device, an aeration device 5, a driving device 35 and a flow guide assembly 7. The inner cavity of the tank body 4 includes an upper area 42, a mechanical stirring area and a column selection area, and the mineralization device includes a rotor assembly 2 and a mineralization tank 1.

[0040] The mineralization tank 1 is arranged in the tank body 4, and the column selection area includes a lower area 41 and a connecting area 43, the upper area 42 is located above the mineralization tank 1, the lower area 41 is located below the mineralization tank 1, and the connecting area 43 is located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank body 4. It can be understood that the upper area 42, the connecting area 43 and the lower area 41 are arranged in sequence from top to bottom.

[0041] The mineralization tank 1 has a mechanical stirring chamber 13 constituting a mechanical stirring area. The bottom of the mineralization tank 1 is provided with a slurry inlet 11 for supplying slurry into the mechanical stirring chamber 13. The top of the mineralization tank 1 is provided with a slurry outlet 12. The slurry outlet 12 is used to discharge the slurry after mechanical stirring. It can be understood that the slurry coming out of the mechanical stirring chamber 13 includes target particles (mineral particles attached to bubbles) and other particles (target particles not attached to bubbles or other non-target particles).

[0042] The rotor assembly 2 includes a rotating shaft 21 and a rotor 22. The lower end of the rotating shaft 21 extends into the mechanical stirring chamber 13. The rotor 22 is located in the mechanical stirring chamber 13 and is installed at the lower end of the rotating shaft 21 to be driven to rotate by the rotating shaft 21 to perform mechanical stirring mineralization in the mechanical stirring chamber 13. That is, 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 are attached to the bubbles to form mineralized bubbles, thereby realizing mechanical stirring flotation.

[0043] The rotating shaft 21 may be provided with a gas supply channel 211 for supplying mineralizing gas into the mechanical stirring chamber 13. Alternatively, a separate gas supply pipeline may be provided to supply air into the mechanical stirring chamber 13.

[0044] The charging device 5 is connected to the lower area 41, and is used to charge gas into the lower area 41 to perform column selection on the slurry entering the column selection area from the mechanical stirring chamber 13 in the column selection area. The driving device 35 is arranged above the trough body 4 and is connected to the rotating shaft 21 to drive the rotating shaft 21 and the rotor 22 to rotate. The upper end of the guide component 7 is connected to the upper area 42, and the lower end of the guide component 7 is connected to the lower area 41. The guide component 7 is used to transport the mineralized bubbles in the lower area 41 to the upper area 42.

[0045] According to the multi-stage mineralization flotation equipment of the embodiment of the present invention, during mineralization, the slurry is introduced into the mineralization tank 1 from bottom to top through the slurry inlet 11, and the rotor 22 rotates and stirs in the mechanical stirring chamber 13 to generate mineralization foam, which can flow out from the slurry outlet 12 of the mineralization tank 1 and flow upward to the upper area 42. Other mineral particles that are not attached to the bubbles flow out from the slurry outlet 12 of the mineralization tank 1 with the slurry, and under the action of gravity, they pass through the connecting area 43 and enter the lower area 41 downward. Under the action of air supplied by the aeration device 5, other mineral particles that are not attached to the bubbles (target particles or other non-target particles that are not attached to the bubbles) can be column-selected in the lower area 41. The mineralized bubbles after column selection flow upward from the lower area 41 to the upper area 42 through the guide assembly 7, and the tailings after column selection fall to the bottom of the tank body 4 under the action of gravity and are discharged. Since other particles not attached to the bubbles pass downward into the lower area 41 through the connecting area 43, the mineralized foam after column selection passes upward into the upper area 42 through the guide assembly 7, thereby avoiding the problem of convection interference between the two, resulting in good flotation effect and high flotation efficiency.

[0046] It is understandable that by setting up the guide component 7, the mineralized foam generated after column selection mainly enters the upper area 42 from the lower area 41 through the guide component 7. Of course, a small number of mineralized bubbles can also pass through the connecting area 43 and enter the upper area 42 from the lower area 41 upward.

[0047] In addition, the rotating shaft 21 has a gas supply channel 211 for supplying mineralized gas to the mechanical stirring chamber 13, so the gas in the mechanical stirring chamber 13 can be supplied to the mechanical stirring chamber 13 through the gas supply channel 211 in the rotating shaft 21. In the example of the present invention, the rotating shaft 21 can not only drive the rotor 22 to rotate, but also provide mineralized gas to the mechanical stirring chamber 13, which has a compact structure, reduces the number of parts, and reduces costs. Of course, a separate gas supply pipeline can also be set to supply air to the mechanical stirring chamber 13.

[0048] It can be understood that mineralization refers to the selective adhesion process of 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 not attached to the bubbles. Mineralized bubbles are target particles attached to bubbles. Here, the target particles attached to the bubbles can also be called mineralized particles. Other particles may include target particles not attached to the bubbles, non-target mineral particles not attached to the bubbles, and tailings particles.

[0049] like Figures 1 to 4 As shown, the bottom of the tank body 4 is provided with a discharge port 44, and the mineral particles not attached to the bubbles after column selection fall to the bottom of the tank body 4 under the action of gravity and are discharged through the discharge port 44. The driving device 35 can be a combination structure of a driving motor and a pulley assembly, that is, the driving motor drives the pulley assembly to rotate, and the pulley assembly drives the rotating shaft 21 to rotate synchronously.

[0050] like Figure 1 As shown, the bottom of the trough body 4 can be any shape such as a cone (funnel), a pyramid or a wedge, so as to guide the tailings, thereby improving the efficiency of the tailings being discharged from the discharge port 44.

[0051] Alternatively, if Figure 2 As shown, the flow guide component 7 is arranged in the tank body 4, the lower end of the flow guide component 7 is located in the lower area 41, and the upper end of the flow guide component 7 extends upward through the connecting area 43 into the upper area 42. It can be understood that the flow guide component 7 is arranged inside the tank body 4, which can reduce the overall occupied space of the multi-stage mineralization flotation equipment. Since the flow guide component 7 passes through the connecting area 43, the space of the transport separation channel can be utilized, that is, other particles that are not attached to the bubbles after mechanical stirring can flow downward to the lower area 41 through the connecting area 43, and the mineralized foam after column selection passes through the connecting area 43 and enters the upper area 42 under the guidance of the flow guide component 7, so as to avoid the problem of mutual influence between the particles that are not attached to the bubbles and the mineralized foam generated by the column selection, which is conducive to improving the flotation effect and flotation efficiency of the multi-stage mineralization flotation equipment.

[0052] In another example, if Figure 1 As shown, the flow guide component 7 is arranged outside the tank body 4, the lower end of the flow guide component 7 is connected to the lower area 41, and the upper end of the flow guide component 7 is connected to the upper area 42. It can be understood that the flow guide component 7 is arranged outside the tank body 4 and does not occupy the space of the connecting area 43. In this way, the efficiency and speed of the particles that are not attached to the bubbles after mechanical stirring flowing downward to the lower area 41 through the connecting area 43 can be improved.

[0053] Compared with the solution of arranging the guide assembly 7 in the tank body 4, the embodiment of the present invention can reduce the radial size of the connecting area 43, that is, the distance between the mineralization tank 1 and the tank body 4 can be appropriately reduced, so that the installation structure of the tank body 4 and the mineralization device is more compact.

[0054] In some embodiments, Figure 1 and Figure 2 As shown, the flow guide assembly 7 includes a flow guide pipe 71 and a flow guide pump (not shown), and the flow guide pump is installed on the flow guide pipe 71. It can be understood that the lower end of the flow guide pipe 71 is connected to the lower area 41, and the upper end of the flow guide pipe 71 is connected to the upper area 42. The mineralized foam formed in the lower area 41 can be transported to the upper area 42 through the flow guide pipe 71, and the flow guide pump can drive the mineralized foam to flow in the flow guide pipe 71. The multi-stage mineralized flotation equipment of the embodiment of the present invention has a simple structural design, convenient assembly, and a good flow guide effect by setting the flow guide assembly 7 in the above-mentioned form.

[0055] For example, the lower end of the flow guide tube 71 may be trumpet-shaped. It is understandable that the trumpet-shaped opening at the lower end of the flow guide tube 71 can increase the opening area of ​​the lower port of the flow guide tube 71, so that the mineralized foam can better enter the flow guide tube 71 through the lower end of the flow guide tube 71, thereby improving the guiding efficiency of the flow guide tube 71.

[0056] In some embodiments, Figure 1 and Figure 2 As shown, the upper region 42 may include a transport separation region 421 and a foam region 422, wherein the foam region 422 is located at the top of the upper region 42, and the transport separation region 421 is located substantially in the middle of the upper region 42. Preferably, the upper end of the flow guide component 7 is connected to the transport separation region 421. It can be understood that the upper end opening of the flow guide component 7 is substantially located in the middle of the upper region 42 and has a certain distance from the foam region 422. Therefore, after the flow guide component 7 passes the mineralized foam into the transport separation region 421, it then moves upward into the foam region 422, thereby avoiding the influence of the flow of the mineralized bubbles discharged by the flow guide component on the foam in the foam region, thereby improving the flotation effect.

[0057] In some embodiments, Figure 3As shown, the multi-stage mineralization flotation equipment also includes a pre-mineralization device 36, which is arranged outside the tank body 4. The pre-mineralization device 36 is used to pre-mineralize the slurry, and the pre-mineralization device 36 is connected to the slurry inlet 11 of the mineralization tank 1. Specifically, one end of the feed pipe 32 is connected to the pre-mineralization device 36, and the other end of the feed pipe 32 is connected to the slurry inlet 11 of the mineralization tank 1. The pre-mineralized slurry can enter the tank body 4 through the feed pipe 32. The pre-mineralization device 36 can be a mechanical stirring mineralization type or an aerated mineralization type. It can be understood that when the flotation equipment is used, the slurry is first pre-mineralized by the pre-mineralization device 36, that is, a part of tiny bubbles are first formed in the slurry, so that a part of the target particles are attached to the bubbles, and then the pre-mineralized slurry is passed through the feed pipe 32 into the mineralization tank 1 for mechanical stirring mineralization flotation, and then enters the lower area 41 for column selection. This can further improve the mineralization effect, which is particularly beneficial for the flotation of fine particles.

[0058] In some embodiments, Figure 6 As shown, the mineralization device further includes a plurality of turbulence reinforcement plates 15, which are arranged at intervals along the circumference of the mechanical stirring chamber 13, and the turbulence reinforcement plates 15 are connected to the inner wall of the mechanical stirring chamber 13 and arranged around the rotor. When the rotor 22 rotates, since the plurality of turbulence reinforcement plates 15 are arranged at intervals along the circumference of the mechanical stirring chamber 13, the slurry flowing circumferentially in the mechanical stirring chamber 13 is sequentially stopped and collided by the plurality of turbulence reinforcement plates 15, thereby enhancing the turbulence effect of the slurry in the mechanical stirring chamber 13, thereby improving the mineralization effect.

[0059] Alternatively, if Figure 4 As shown, the rotor 22 is in the form of an impeller, the outer diameter of the impeller is A, and the gap between the outer edge of the impeller and the inner edge of the turbulence enhancement plate 15 in the radial direction of the rotating shaft 21 is B, wherein 0.03A≤B≤0.2A. In other words, the gap between the impeller and the inner edge of the turbulence enhancement plate 15 is 3%-20% of the impeller diameter. For example, B is equal to 0.03A, 0.08A, 0.12A, 0.15A, 0.2A.

[0060] The inventors of the embodiments of the present invention have discovered through research and confirmed through experiments that when the impeller and the turbulence reinforcement plate 15 adopt the above-mentioned structural parameters, it can make it easier to generate tiny bubbles during mineralization, and the circulation mixing effect is better, which is more conducive to the flotation of fine-grained minerals.

[0061] Alternatively, if Fig.10 As shown, the turbulence reinforcement plate 15 is provided with a second hollow hole 151 that penetrates along the thickness direction thereof. The turbulence reinforcement plate 15 of the mineralization device of the embodiment of the present invention is designed as a hollow structure, so that tiny bubbles are more easily generated when the impeller rotates, so that the circulation and mixing effect of the slurry and the bubbles is better, which is more conducive to the mineralization of fine-grained minerals, and the resistance of the slurry flow is smaller, and the energy dissipation is less.

[0062] The opening size of the second hollow hole 151 can be designed according to the mineral properties, and the embodiment of the present invention is not limited to this. For example, the second hollow hole 151 can be a strip hole or a round hole. The strip hole can extend obliquely, horizontally, or vertically. There can be multiple second hollow holes 151, and the multiple second hollow holes 151 are discretely arranged.

[0063] In other examples, the turbulence enhancement plate 15 may also be a solid plate.

[0064] In some embodiments, the turbulence reinforcement plate 15 can be divided into multiple sections in the radial direction of the mineralization tank 1. The multiple sections can be connected to each other as a whole, or can be divided into sections and distributed at intervals. Multiple turbulence reinforcement plates 15 can be aligned in the radial direction, or can be staggered obliquely in the radial direction. According to the characteristics of the mineral, the structural form of the turbulence reinforcement plate 15 can be conveniently selected to improve applicability.

[0065] Optionally, the upper end surface of the turbulence reinforcement plate 15 is flush with the upper end surface of the mineralization tank 1, and the lower end surface of the turbulence reinforcement plate 15 is flush with the lower end surface of the mineralization tank 1. Since the lower end surface of the turbulence reinforcement plate 15 is flush with the lower end surface of the mineralization tank 1, it can be ensured that the slurry at the bottom of the mechanical stirring chamber 13 has a good turbulent effect. The upper end surface of the turbulence reinforcement plate 15 is flush with the upper end surface of the mineralization tank 1, which can reduce the influence of the turbulence in the mechanical stirring chamber 13 on the lower side position of the upper area above the mineralization tank 1, which is conducive to the rise of mineralized bubbles.

[0066] In some embodiments, Figure 4 and Figure 5 As shown, the mineralization device further includes a plurality of guide plates 16, which are arranged in the communication area 43, and the plurality of guide plates 16 are arranged at intervals along the circumference of the mineralization tank 1, and the upper surface of the guide plate 16 is flush with the top surface of the mineralization tank 1, and the lower surface of the guide plate 16 is lower than the bottom surface of the mineralization tank 1. The guide plates 16 can guide the slurry containing the mineral particles not attached to the bubbles downward into the lower area 41. The guide plates 16 can reduce the turbulence of the slurry at the position of the communication area 43, avoid the slurry flow from becoming more turbulent, facilitate entering the lower area 41 for column selection, and thus improve the mineralization and flotation effect of the flotation device.

[0067] The flow guide plate 16 comprises a flow guide plate body and a wing baffle plate arranged on the flow guide plate body, the flow guide plate body is positioned in the up-down direction, and the wing baffle plate extends obliquely downward from the flow guide plate body. The flow guide plate body can be connected to the outer wall of the mineralization tank 1 or the inner wall of the tank body 4.

[0068] The wing baffle can prevent the mineralized bubbles in the lower area 41 from rising to the upper area 42 through the connecting area 43, so that more mineralized bubbles produced by column selection can reach the upper area 42 through the guide component 7, further improving the effect of avoiding the interference between the bubble particles not attached to the connecting area 43 and the upper and lower convection of the mineralized foam.

[0069] In the related art, mineralization is carried out in the tank of the flotation equipment, and the slurry is introduced into the tank from the outside, and mineralization is carried out under the action of gas supply and mechanical stirring in the slurry. However, the inventors have found that due to the large space in the tank, the mineralization and flotation effects are poor and the flotation efficiency is not high. To this end, the related art proposes to set a parabolic basin-shaped reflection bottom in the tank, the slurry and gas are supplied into the reflection bottom, and mechanical stirring is carried out in the reflection bottom to achieve bubble mineralization. The reflection bottom reflects the slurry containing mineralized bubbles upward out of the reflection bottom to improve the flotation efficiency, but the inventors find that there are still problems of poor mineralization and flotation effects and low efficiency. The inventors have found through research that compared with mineralization in the tank, the flotation efficiency can be improved to a certain extent by the reflection effect of the reflection bottom, but because the top of the reflection bottom is open, the stirred slurry is quickly discharged from the reflection bottom under the reflection effect of the reflection bottom, and the residence time is short, thereby affecting the mineralization effect.

[0070] In order to further improve the mineralization and flotation effects and improve the flotation efficiency, the inventors proposed a scheme of confined mineralization. The so-called confined mineralization refers to the mineralization being carried out in a relatively closed and relatively narrow limited space compared with the related art. The limited space can also be called a confined space, a restricted area, a limited area or a restricted area, referred to as a confined area. For example, the confined area is smaller and relatively closed than the inner cavity of the tank in the related art, and is relatively closed compared with the open parabolic reflection bottom in the related art. During the mineralization process, the slurry and gas are introduced into the confined space, and mechanical stirring is carried out in the confined space, so that the air can form more bubbles. The bubbles and the target particles in the slurry are repeatedly reflected, stirred and collided with each other in the confined space, which increases the contact time, contact times and collision times of the bubbles and the target particles, thereby improving the mineralization and flotation effects, and then improving the efficiency. Therefore, in the present invention, the mineralization carried out in a confined space can be called confined mineralization.

[0071] Specifically, Figure 1 and Figure 2As shown, the mineralization device also includes a cover plate 31, which is arranged above the mineralization tank 1, wherein the cover plate 31 is opposite to the slurry outlet 12 and is spaced apart from the top surface of the mineralization tank 1 so that the mineralized slurry can flow out. It can be understood that the cover plate 31 and the mineralization tank 1 define a relatively closed mineralization area including the mechanical stirring chamber 13. The multi-stage mineralization flotation equipment of the embodiment of the present invention improves the closure of the mechanical stirring chamber 13 by arranging the cover plate 31 above the mineralization tank 1, and can prolong the time of reflection, rectification and surging of the slurry in the mechanical stirring chamber 13, so as to increase the contact time, contact number and collision number of bubbles and target particles, thereby improving the mineralization and flotation effect. In addition, the flow field disturbance formed by the rotation of the rotor 22 is blocked by the cover plate 31, so that the turbulence intensity at the lower side of the upper area 42 above the mechanical stirring chamber 13 is low, which is conducive to the rise of mineralized bubbles.

[0072] In other words, the turbulence of the slurry is more intense in the relatively closed and relatively small area of ​​the mineralization tank 1 with the cover plate 31, the bubbles are smaller, and it is easier to capture fine particles. The mineralized bubbles flow more smoothly at the lower side of the upper area 42 above the mechanical stirring chamber 13, and the attached particles are more stable and not easy to fall off.

[0073] The distance between the cover plate 31 and the top surface of the mineralization tank 1 can be adaptively adjusted according to different types of slurries, which is not limited in the embodiment of the present invention.

[0074] In another example, if Figure 4 As shown, the cover plate 31 covers the slurry outlet 12 and is provided with a flow hole 311 for connecting the mechanical stirring chamber 13 and the outside of the mechanical stirring chamber 13. The mineralized liquid containing mineralized bubbles in the mechanical stirring chamber 13 flows out to the mineralization tank 1 through the flow hole 311. It can be understood that the cover plate 31 and the mineralization tank 1 define a relatively closed mineralization area including the mechanical stirring chamber 13. The multi-stage mineralization flotation equipment of the embodiment of the present invention improves the sealing of the mechanical stirring chamber 13 by arranging the cover plate 31 above the mineralization tank 1, and can prolong the time of reflection, rectification and surging of the slurry in the mechanical stirring chamber 13, so as to increase the contact time, contact and collision number of bubbles and target particles, thereby improving the mineralization and flotation effect. In addition, the flow field disturbance formed by the rotation of the rotor 22 is blocked by the cover plate 31, so that the turbulence intensity at the lower side of the upper area 42 above the mechanical stirring chamber 13 is low, which is conducive to the rise of mineralized bubbles.

[0075] In other words, the slurry flows more violently in the relatively closed and relatively small area of ​​the mineralization tank 1 with the cover plate 31, the bubbles are smaller, and it is easier to capture fine particles. The slurry flows more smoothly in the transportation area above the mechanical stirring chamber 13, the attached particles are more stable and not easy to fall off, and the mineralized bubbles rise smoothly, which improves efficiency.

[0076] In some embodiments, Figure 4 As shown, the mineralization device further includes a feed box 33, which is arranged below the mineralization tank 1. The feed box 33 has a feed port connected to the feed pipe 32 to supply slurry into the feed box 33 and a discharge port connected to the slurry inlet 11 to supply the slurry in the feed box 33 to the mechanical stirring chamber 13. The feed box 33 is made separately from the mineralization tank 1 or made integrally. It can be understood that the feed pipe 32 first supplies the slurry into the feed box 33, and then the slurry enters the mineralization tank 1 through the feed box 33. The mineralization device of the embodiment of the present invention can buffer the slurry before entering the mineralization tank 1 by arranging the feed box 33 below the mineralization tank 1, so that the slurry can quickly enter the flow field stirred by the impeller, which is conducive to improving the turbulence effect of the slurry in the mechanical stirring chamber 13, enhancing the capture effect of bubbles on the target mineral, and enhancing the intensity of the internal slurry circulation.

[0077] In some embodiments, Figure 4 and Fig.12 As shown, the mineralization device also includes an anti-settling component 34, which includes at least one of a rake frame 341 and a spray gun 342, wherein the rake frame 341 is arranged at the bottom of the mechanical stirring chamber 13 and is located below the rotor 22, and the rake frame 341 can be driven to rotate by the rotating shaft 21; the spray gun 342 has an ejection end extending into the bottom of the mechanical stirring chamber 13, and is used to spray water and / or gas to the bottom of the mechanical stirring chamber 13, and preferably, the spray gun 342 sprays air.

[0078] It is understandable that when the anti-settling component 34 is in the form of a rake 341, the rake 341 is arranged at the bottom of the mechanical stirring chamber 13 and is located below the rotor 22, and the rake 341 is driven to rotate by the rotating shaft 21. When the anti-settling component 34 is a spray gun 342, the spray end of the spray gun 342 extends into the bottom of the mechanical stirring chamber 13, and is used to spray water and / or gas to the bottom of the mechanical stirring chamber 13. The rake 341 and the spray gun 342 can stir the minerals at the bottom of the mechanical stirring chamber 13, prevent the minerals from being deposited and blocked in the mechanical stirring chamber 13, and are conducive to improving the mineralization effect of the slurry. Moreover, the air sprayed by the spray gun 342 can further play a stirring mineralization role, thereby improving the mineralization effect. Preferably, an air path can also be set in the rake 341, and a part of the stirring gas supplied by the rotating shaft 21 is sprayed to the bottom of the mechanical stirring chamber 13 through the rake 341, which not only improves the anti-sedimentation effect, but also improves the mineralization effect.

[0079] In some embodiments, in the longitudinal section of the mineralized groove 1, that is, along the axial direction ( Figure 4In the cross section of the mineralized groove 1 (in the vertical direction in the middle), the peripheral wall of the mineralized groove 1 includes a plurality of line segments 14 connected in sequence, and the inclination angles of adjacent line segments 14 are different from each other. In other words, the peripheral wall of the mineralized groove 1 is not arc-shaped or parabolic, but is composed of a plurality of straight line segments, and the inclination angles of different peripheral wall portions are different.

[0080] According to the multi-stage mineralization flotation equipment of the embodiment of the present invention, the slurry is introduced into the mineralization tank 1 from bottom to top through the slurry inlet 11, and the rotor 22 rotates and stirs in the mechanical stirring chamber 13 to mineralize the bubbles. Since the peripheral wall of the mineralization tank 1 includes a plurality of line segments 14 connected in sequence in the longitudinal section of the mineralization tank 1, the slurry is reflected, rectified and surging by the inner wall of the mineralization tank 1. The mineralization effect is improved. Moreover, since the inclination angles of adjacent line segments 14 are different from each other, that is, the inclination angles of different parts of the peripheral wall of the mineralization tank 1 are different, the angles of the slurry reflected by different peripheral wall parts are different. Compared with the arc-shaped peripheral wall, the slurry flows reflected by the peripheral wall parts with different inclination angles collide with each other in the mineralization tank 1. This enhances the turbulence generated by the mineralization tank 1, reduces the weak mineralization area, and further increases the probability of bubble generation and adhesion to mineral particles, thereby improving the mineralization effect and reducing the local wear of the mineralization tank 1.

[0081] For example, Figure 1 and Figure 4 As shown, the cross-sectional area of ​​the mechanical stirring chamber 13 gradually decreases from top to bottom, and the mineralization tank 1 may have a generally segmented basin-shaped structure. The segmented basin-shaped mechanical stirring chamber 13 may provide reflection forces in multiple directions for the slurry stirred by the rotor 22, thereby strengthening the collision effect of the slurry flow, increasing the turbulence intensity, and improving the mineralization effect.

[0082] Compared with the parabolic or arc-shaped mineralization trough 1 in the related art, the mineralization trough 1 of the multi-stage mineralization flotation equipment in the embodiment of the present invention is easier to process and obtain multiple reflection focuses. In other words, the mineralization trough 1 in the embodiment of the present invention is easier to achieve multiple reflection focuses close to the theoretical design, which improves the actual application effect. For mineralization troughs 1 of different sizes, by adjusting the number and inclination of the line segments 14 in the longitudinal section of the mineralization trough 1, a solution close to the theoretical focus can still be obtained, and it is easier to realize the theoretical flow field model, that is, folding and surging in multiple directions along the inner wall of the mineralization trough 1, thereby forming a strong turbulent flow field. The mineralization trough 1 in the embodiment of the present invention can strengthen the overall mineralization and reduce the weak mineralization area in the mechanical stirring chamber 13, reducing the situation of local excessive wear of the mineralization trough 1.

[0083] For coarser mineral particles, the distance between the upper edge of the mineralization tank 1 and the inner bottom wall (i.e., the depth of the mineralization tank 1) can be adjusted to allow the mineral particles to participate in circulation and mixed mineralization multiple times, reduce the falling of coarse particles, and avoid the phenomenon of slurry sinking to the bottom and clogging the pipeline.

[0084] The angle of the edge of the slurry outlet 12 of the mineralization tank 1 of the embodiment of the present invention can be adaptively adjusted to avoid the slurry rushing out of the mineralization tank 1 due to an excessively large angle, which is beneficial to improving the mineralization efficiency and effect of the mineralization tank 1.

[0085] Preferably, if Figure 1 and Figure 4 As shown, the inclination angle between the line segment 14 and the horizontal plane is α, where 10°≤α<90°. For example, the inclination angle α between the line segment 14 and the horizontal plane can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°. Alternatively, the inclination angle α can be close to and less than 90°. The inventors of the embodiments of the present invention have found through research and verified through experiments that when the inclination angle α between the line segment 14 and the horizontal plane is within the above-mentioned angle range, the particles can be better involved in circulation and mixed mineralization, the turbulence effect generated in the mineralization tank 1 can be enhanced, and the problem of the slurry rushing out of the mineralization tank 1 along the side wall of the mineralization tank 1 can be avoided, which is conducive to improving the mineralization efficiency of the mineralization tank 1.

[0086] Optionally, the number of line segments 14 is proportional to the area of ​​the slurry outlet 12. It is understandable that when the area of ​​the slurry outlet 12 is larger, the number of line segments 14 needs to be arranged more, thereby improving the reflection and rectification effect of the mineralization tank 1, thereby forming a strong turbulent flow field. When designing the mineralization tank 1, the structure of the mineralization tank 1 can be adjusted as the mineralization tank 1 increases and the mineral type changes, so as to meet the mineralization requirements of the mineralization device and improve the mineralization effect.

[0087] In some embodiments, Figure 7 and Figure 8 As shown, the rotor 22 is in the form of an impeller, which includes a hub 221 , a wheel disc 222 , a top plate 224 , a bottom plate 225 and blades 223 , wherein the blades 223 include an upper blade 2231 and a lower blade 2232 .

[0088] The hub 221 is installed at the lower end of the rotating shaft 21, the wheel disc 222, the top plate 224 and the bottom plate 225 are installed on the hub 221, and the wheel disc 222 is located between the top plate 224 and the bottom plate 225. There are multiple upper blades 2231 and lower blades 2232. The multiple upper blades 2231 are arranged between the upper surface of the wheel disc 222 and the top plate 224 and are arranged at intervals along the circumference of the wheel disc 222. The multiple lower blades 2232 are arranged between the lower surface of the wheel disc 222 and the wheel disc 222 and are arranged at intervals along the circumference of the wheel disc 222. The upper blades 2231 and the lower blades 2232 correspond to each other one by one or are staggered along the circumference of the wheel disc 222.

[0089] Preferably, the upper blades 2231 and the lower blades 2232 are arranged alternately, that is, the upper blades 2231 and the lower blades 2232 are not aligned with each other along the axial direction of the impeller.

[0090] When the impeller rotates, the upper blades 2231 on the upper side of the wheel disc 222 and the lower blades 2232 on the lower side of the wheel disc 222 can rotate simultaneously, which can enhance the slurry suction capacity (the ability to suck the slurry from the slurry inlet 11 into the mechanical stirring chamber 13) and stirring effect of the impeller on the one hand, and enhance the intensity of the internal slurry circulation on the other hand, improve the mineralization effect of the slurry, and enhance the selectivity in the flotation process.

[0091] For example, the upper blades 2231 and the lower blades 2232 are radially distributed, and the number of the upper blades 2231 and the lower blades 2232 are between 4 and 16 and are evenly arranged. It should be noted that the number of the upper blades 2231 and the lower blades 2232 can be equal or unequal, and the embodiment of the present invention is not limited to this.

[0092] Since the upper blades 2231 are arranged between the upper surface of the wheel disc 222 and the top plate 224, and the lower blades 2232 are arranged between the lower surface of the wheel disc 222 and the wheel disc 222, the intensity of the internal slurry circulation can be further enhanced, and the energy utilization rate of the impeller rotation is improved, which is beneficial to enhance the capture effect of bubbles on target minerals and enhance the selectivity in the flotation process.

[0093] For example, the outer circumference of the top plate 224 is substantially consistent with the size of the outer circumference formed by the plurality of upper blades 2231 , and the outer circumference of the bottom plate 225 is substantially consistent with the size of the outer circumference formed by the plurality of lower blades 2232 .

[0094] In other examples, such as Fig. 9 As shown, the rotor 22 is located in the mechanical stirring chamber 13, and the rotor 22 includes a wheel disc 222 and a plurality of blades 223. The wheel disc 222 is installed at the lower end of the rotating shaft 21, and the plurality of blades 223 are arranged at intervals along the circumference of the wheel disc 222 on the outer peripheral edge of the wheel disc 222. In the longitudinal section of the rotor 22, the contour line of the outer side surface of the blade 223 includes a vertical section 2234 and an arc section 2235. The upper end of the arc section 2235 is connected to the upper end of the vertical section 2234 and gradually extends inward, so that when the rotor 22 rotates, the stirred slurry area turns upward along the arc section. The mineralization device of the embodiment of the present invention can improve the turbulence effect of the slurry in the mechanical stirring chamber 13 by setting the blades 223 as the above structure, enhance the capture effect of bubbles on target particles, enhance the intensity of internal slurry circulation, and improve the energy utilization rate of impeller rotation.

[0095] Alternatively, if Fig. 9As shown, the rotating shaft 21 has a gas supply channel 211 for supplying mineralizing gas to the mechanical stirring chamber 13, and the wheel disc 222 has a gas injection channel 2220 connected to the gas supply channel 211 in the rotating shaft 21, and the gas injection outlets of the gas injection channel 2220 are formed on the outer peripheral surface of the wheel disc 222 and arranged at intervals along the circumference of the wheel disc 222. Since the gas injection outlets of the gas injection channel 2220 in the wheel disc 222 are formed on the outer peripheral surface of the wheel disc 222 and arranged at intervals along the circumference of the wheel disc 222, the mixing degree of the slurry and the bubbles can be improved, and the mineralization effect of the mineralization device can be improved.

[0096] Optionally, the blade 223 is provided with a first hollow hole 2233 that penetrates along the thickness direction thereof. The blade 223 of the mineralization device of the embodiment of the present invention is designed as a hollow structure, and it is easier to generate tiny bubbles when the impeller rotates, so that the circulation and mixing effect of the ore pulp and the bubbles is better, which is more conducive to the flotation of fine-grained minerals.

[0097] For example, the first hollow hole 2233 may be a strip hole or a round hole. The strip hole may extend obliquely, horizontally, or vertically. There may be a plurality of first hollow holes 2233, and the plurality of first hollow holes 2233 may be discretely arranged.

[0098] In some embodiments, Fig.11 As shown, the multi-stage mineralized flotation equipment further includes a froth scraping device 6, which includes a rotatable scraper 61, which is arranged in the tank body 4 and in the froth area 422 of the upper part of the upper area 42, and the scraper 61 is arc-shaped or involute-shaped, and the angle between the scraper 61 and the vertical plane is 0-30 degrees. It can be understood that the rotation axis of the scraper 61 is colinear with the axis of the tank body 4, and when the scraper 61 rotates, the mineralized froth in the froth area can be scraped to collect and discharge the mineralized froth.

[0099] Since the scraper 61 is in an arc or involute shape, the extension path of the scraper 61 can be extended, the resistance of the scraper 61 during movement can be reduced, and the energy consumption of the scraper 61 during movement can be reduced. In addition, since the angle between the scraper 61 and the vertical plane can be 0-30 degrees, for example, the angle between the scraper 61 and the vertical plane is 1 degree, 10 degrees, 15 degrees, 20 degrees, 25 degrees, and 30 degrees. Thus, the scraper 61 can scrape the foam quickly, and the scraper 61 can scrape a thicker foam layer, which is conducive to improving the scraping efficiency of the scraper 61.

[0100] Optionally, the scrapers 61 are at least two layers and are arranged at intervals in the up-down direction, each layer has a plurality of scrapers 61, and the plurality of scrapers 61 in each layer are arranged at intervals along the circumference of the tank body 4. The flotation device of the embodiment of the present invention can improve the sorting effect of mineralized foam and improve the scraping efficiency of the scrapers 61 by providing at least two layers of scrapers 61.

[0101] For two adjacent layers of scrapers 61, the number of scrapers 61 in the upper layer can be greater than the number of scrapers 61 in the lower layer. It can be understood that the multiple scrapers 61 in the upper layer are arranged more densely, and the multiple scrapers 61 in the lower layer are arranged more sparsely. The sparse scrapers 61 in the lower layer can sort the mineralized foam in the upper area 42, and the dense scrapers 61 in the upper layer can increase the scraping amount of the mineralized foam when rotating, so as to scrape a thicker foam layer, which is conducive to improving the scraping efficiency of the scrapers 61.

[0102] Optionally, the axial position of the scraper 61 along the tank body 4 is adjustable so that the scraping layer of the scraper 61 is adapted to the ore grade, thereby improving the compatibility and applicability of the flotation device and expanding the application range of the flotation device. For example, the scraper 61 can be installed on the rotating shaft 21 in a clamping structure, and the position of the scraper 61 along the rotating shaft 21 is adjustable.

[0103] Optionally, the scraper 61 is provided with a third hollow hole (not shown) penetrating along the thickness direction thereof, that is, the hollow structure can make the scraper 61 scrape bubbles more smoothly.

[0104] Optionally, a turbulence suppression grid 37 is provided in the tank body 4. The turbulence suppression grid 37 is located in the lower area 41 and arranged adjacent to the upper side of the lower area 41 to reduce the turbulence intensity in the connecting area 43 above the lower area 41 and improve the flotation effect and efficiency of the flotation equipment.

[0105] For example, Figure 3 As shown, the turbulence suppression grid 37 is located at the lower side of the upper region 42. The turbulence suppression grid 37 can suppress the turbulence intensity in the upper region 42 and improve the flotation effect.

[0106] Optionally, the position of the turbulence suppression grid 37 in the up and down direction is adjustable, so that the flotation equipment can adjust the turbulence suppression grid 37 to a suitable position according to different flotation minerals or flotation effects, so as to expand the application range of the flotation equipment and achieve better turbulence suppression effect.

[0107] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0108] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0109] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0110] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0111] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0112] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A multi-stage mineralization flotation equipment, characterized in that: include: A tank body, wherein the inner cavity of the tank body includes an upper area, a mechanical stirring area and a column selection area; A mineralization device, the mineralization device comprises a rotor assembly and a mineralization tank, the mineralization tank has a mechanical stirring chamber constituting the mechanical stirring area, the bottom of the mineralization tank is provided with a slurry inlet for supplying slurry into the mechanical stirring chamber, the top of the mineralization tank is provided with a slurry outlet for discharging slurry, the mineralization tank is arranged in the tank body, the upper area is located above the mineralization tank, the column selection area comprises a lower area and a communication area, the lower area is located below the mineralization tank, the communication area is located between the outer peripheral wall of the mineralization tank and the inner peripheral wall of the tank body, the rotor assembly comprises a rotating shaft and a rotor, the lower end of the rotating shaft extends into the mechanical stirring chamber, the rotor is located in the mechanical stirring chamber and is installed at the lower end of the rotating shaft to be driven to rotate by the rotating shaft to perform mechanical stirring mineralization in the mechanical stirring chamber; an aeration device, the aeration device being in communication with the lower region and being used for charging gas into the lower region so as to column-select the ore pulp entering the column-selection region from the mechanical stirring chamber in the column-selection region; A driving device, the driving device is arranged above the tank body and connected to the rotating shaft to drive the rotating shaft and the rotor to rotate; A flow guide component, the upper end of which is communicated with the upper region, the lower end of which is communicated with the lower region, and the flow guide component is used to transport mineralized bubbles in the lower region to the upper region.

2. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The flow guide component is arranged in the trough body, the lower end of the flow guide component is located in the lower area, and the upper end of the flow guide component extends upward through the connecting area into the upper area.

3. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The flow guide component is arranged outside the trough body, the lower end of the flow guide component is communicated with the lower area, and the upper end of the flow guide component is communicated with the upper area.

4. The multi-stage mineralization flotation equipment according to claim 3, characterized in that: The flow guide assembly comprises a flow guide pipe and a flow guide pump, and the flow guide pump is installed on the flow guide pipe.

5. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The flow guide component comprises a flow guide pipe, and the lower end of the flow guide pipe is trumpet-shaped.

6. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The upper region comprises a transport separation region and a foam region, wherein the foam region is located at the top of the upper region, the transport separation region is located substantially in the middle of the upper region, and the upper end of the flow guide component is in communication with the transport separation region.

7. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The multi-stage mineralization flotation equipment further comprises a pre-mineralization device, which is arranged outside the tank body and is used for pre-mineralizing the slurry. The pre-mineralization device is communicated with the slurry inlet of the mineralization tank.

8. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The mineralization device further comprises a plurality of turbulence reinforcement plates, which are arranged at intervals along the circumference of the mechanical stirring chamber, and the turbulence reinforcement plates are connected to the inner wall of the mechanical stirring chamber.

9. The multi-stage mineralization flotation equipment according to claim 1, characterized in that: The mineralization device also includes a plurality of drainage plates, which are arranged in the communication area, and are arranged at intervals along the circumference of the mineralization groove. The upper surface of the drainage plate is flush with the top surface of the mineralization groove, and the lower surface of the drainage plate is lower than the bottom surface of the mineralization groove. The drainage plate includes a drainage plate body and a wing baffle provided on the drainage plate body. The drainage plate body is positioned in the up and down direction, and the wing baffle extends obliquely downward from the drainage plate body.

10. The multi-stage mineralization flotation equipment according to any one of claims 1 to 9, characterized in that: The tank body is provided with a turbulence suppression grille located in the upper region and / or the lower region, and the position of the turbulence suppression grille in the up-down direction is adjustable.

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