Flotation machine

Abstract

The utility model relates to a flotation machine. The flotation machine comprises a tank body, a mineralization device and a foam scraping device. The mineralization device comprises a rotor assembly and a mineralization tank, the mineralization tank is arranged in a tank body, a mechanical stirring cavity is formed in the mineralization tank, a slurry inlet is formed in the bottom of the mineralization tank, a slurry outlet is formed in the top of the mineralization tank, and an upper area is arranged in the tank body and located above the mineralization tank. The upper area comprises a foam area located on the uppermost portion of the tank body, the rotor assembly comprises a rotating shaft and a rotor, the rotor is installed at the lower end of the rotating shaft and located in the mechanical stirring cavity, the foam scraping device comprises a rotatable scraping plate, the scraping plate is arranged in the tank body and located in the foam area, and an included angle alpha is formed between the plate face of the scraping plate and the axial direction of the tank body and is larger than 0 degree and smaller than 90 degrees. The flotation machine can improve the separation effect and the separation efficiency of mineralized foam.

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, and 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 technology, a mechanical agitation chamber is provided in the flotation device, and ore pulp and air are introduced into the mechanical agitation chamber from the outside to mineralize under the action of mechanical agitation. Mineralized bubbles can be collected upwards and separated from the tank body by a bubble scraping device. However, the bubble scraping device in related technology has the problems of unreasonable structure design, poor mineralized foam separation effect, and low separation efficiency. SUMMARY

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

[0004] To this end, an embodiment of the utility model provides a flotation machine, which can improve the separation effect and separation efficiency of mineralized foam.

[0005] The flotation machine of the utility model embodiment comprises a tank body, an axial direction of the tank body extends vertically; a mineralization device, the mineralization device comprises a rotor assembly and a mineralization tank, the mineralization tank is arranged in the tank body, the mineralization tank has a mechanical agitation chamber in it, the bottom of the mineralization tank is provided with an ore pulp inlet for supplying ore pulp into the mechanical agitation chamber, the top of the mineralization tank is provided with an ore pulp outlet for discharging ore pulp, the tank body has an upper region, the upper region is located above the mineralization tank, mineralized bubbles in the ore pulp discharged from the mechanical agitation chamber enter the upper region, the upper region comprises a foam zone located at the uppermost part, the rotor assembly comprises a rotating shaft and a rotor, the lower end of the rotating shaft extends into the mechanical agitation chamber from the ore pulp outlet, the rotor is installed at the lower end of the rotating shaft and located in the mechanical agitation chamber; a bubble scraping device, the bubble scraping device comprises a rotatable scraper, the scraper is arranged in the tank body and located in the foam zone, the scraper has an included angle alpha between the plate surface and the axial direction of the tank body, wherein 0° < alpha < 90°.

[0006] According to the embodiment of the utility model, when mineralization is carried out, the slurry is passed into the mineralization tank through the slurry inlet along the direction from bottom to top, the rotor rotates and stirs in the mechanical stirring chamber, air is dispersed to form tiny bubbles, particles adhere to the bubbles to form mineralized bubbles, the slurry containing the mineralized bubbles and other particles not adhered to the bubbles can flow out from the slurry outlet of the mineralization tank, and the mineralized bubbles flow upwards to the upper region. Since the scraper is arranged in the tank body and located in the foam area, the rotating scraper can scrape the floating mineralized foam to separate the mineralized foam from the tank body. Since the scraper has the included angle alpha between the plate surface and the axial direction of the tank body, the mineralized foam is more easily scraped and separated by the scraper, the resistance during rotation of the scraper is reduced, and the separation effect and separation efficiency of the mineralized foam are improved.

[0007] In some embodiments, 0° < alpha <= 30°.

[0008] In some embodiments, in the horizontal projection plane perpendicular to the axial direction of the tank body, the extension path of the outer peripheral contour of the scraper is arc-shaped or involute-shaped.

[0009] In some embodiments, the scraper is a flat plate extending along the radial direction of the tank body.

[0010] In some embodiments, the scraper is multilayered, and the multilayered scrapers are arranged in sequence and spaced apart along the axial direction of the tank body.

[0011] In some embodiments, the scraper is at least two layers and arranged spaced apart along the axial direction of the tank body, each layer of scrapers is a plurality of scrapers, the plurality of scrapers in each layer are arranged spaced apart along the circumferential direction of the tank body, and the number of scrapers in the upper layer is greater than the number of scrapers in the lower layer.

[0012] In some embodiments, the scraper is provided with a hollow hole in the thickness direction thereof.

[0013] In some embodiments, the scraper is in transmission connection with the rotating shaft, and the position of the scraper along the axial direction of the tank body is adjustable.

[0014] In some embodiments, the flotation machine further comprises a flushing device arranged in the tank body, the flushing device is arranged below and adjacent to the scraper, and the flushing device is used for flushing water to the mineralized foam in the tank body.

[0015] In some embodiments, the tank has a column selection area inside, the column selection area includes 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 slurry containing other particles enters the column selection area, the flotation machine further comprises an air charging device, the air charging device is in communication with the lower area, and the air charging device is used for charging gas into the lower area to perform column selection on the slurry entering the column selection area from the mechanical stirring cavity, a flow guide plate is arranged in the communication area, a lower end of the flow guide plate is lower than a bottom surface of the mineralization tank, and the upper area and the lower area are respectively provided with a turbulence suppression grid adjacent to the mineralization tank. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0018] Figure 3 is a front view schematic diagram of the scraper of the flotation machine of the embodiment of the present application.

[0019] Figure 4 is a top view schematic diagram of the scraper and the tank body of the flotation machine of the embodiment of the present application.

[0020] REFERENCE SIGNS:

[0021] 1, mineralization tank; 11, slurry inlet; 12, slurry outlet; 13, mechanical stirring cavity; 14, flow guide plate;

[0022] 2, rotor assembly; 21, rotating shaft; 211, gas supply channel; 22, rotor;

[0023] 3, turbulence suppression grid;

[0024] 4, tank body; 41, lower area; 42, upper area; 421, foam area; 43, communication area; 44, discharge port;

[0025] 5, air charging device;

[0026] 6, foam scraping device; 61, scraper; 611, hollow hole. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.Figures 1 to 4 The flotation machine is characterized in that the flotation machine comprises a tank body 4, a mineralization device and a bubble scraping device 6.

[0029] As shown in Figures 1 to 4 the utility model discloses flotation machine includes: groove body 4, mineralization device and scraping device 6. The axial direction of groove body 4 extends along the vertical direction, and the mineralization device includes rotor assembly 2 and mineralization groove 1.

[0030] The mineralization device includes rotor assembly 2 and mineralization groove 1, and the mineralization groove 1 is arranged in the tank body 4. The mineralization groove 1 has a mechanical stirring cavity 13 therein. The bottom of the mineralization groove 1 is provided with an ore pulp inlet 11 for feeding ore pulp into the mechanical stirring cavity 13. The top of the mineralization groove 1 is provided with an ore pulp outlet 12 for discharging ore pulp. It can be understood that the ore pulp discharged from the ore pulp outlet 12 includes target particles attached to air bubbles and other particles (target particles not attached to air bubbles or other non-target particles).

[0031] The tank body 4 has an upper region 42 above the mineralization groove 1. The mineralized air bubbles in the ore pulp discharged from the mechanical stirring cavity 13 enter the upper region 42. The upper region 42 includes a froth zone 421 at the uppermost part thereof.

[0032] 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 cavity 13 through the ore pulp outlet 12. The rotor 22 is mounted at the lower end of the rotating shaft 21 and located in the mechanical stirring cavity 13. The bubble scraping device 6 includes a rotatable scraper 61. The scraper 61 is arranged in the tank body 4 and located in the froth zone 421. The scraper 61 has an angle α between the plate surface thereof and the axial direction of the tank body 4, wherein 0° < α < 90°.

[0033] According to the flotation machine of the utility model, when mineralization is performed, the ore pulp is fed into the mineralization groove 1 through the ore pulp inlet 11 in a direction from bottom to top. The rotor 22 rotates and stirs in the mechanical stirring cavity 13 to disperse air and form tiny air bubbles. The particles are attached to the air bubbles to form mineralized air bubbles. The ore pulp containing the mineralized air bubbles and other particles not attached to the air bubbles can flow out of the ore pulp outlet 12 of the mineralization groove 1. The mineralized froth flows upward to the upper region 42. Since the scraper 61 is arranged in the tank body 4 and located in the froth zone 421, the rotating scraper 61 can scrape the floating mineralized froth to separate the mineralized froth from the tank body 4. Since the angle α between the plate surface of the scraper 61 and the axial direction of the tank body 4 is greater than 0° and less than 90°, the mineralized froth is more easily scraped and separated by the scraper 61. The resistance when the scraper 61 rotates is reduced. The separation effect and efficiency of the mineralized froth are improved.

[0034] The inventor of the utility model researches and finds and verifies through experiments that, compared with the vertical arrangement of the scraper in the prior art, that is, the plate surface of the scraper extends along the vertical direction (that is, the axial direction of the groove body), the scraper 61 of the utility model has an included angle greater than zero and less than 90 degrees between the axial direction (that is, the vertical direction) of the groove body 4, that is, the scraper 61 is arranged obliquely, which can better scrape the mineralized foam, reduce the resistance of the scraper 61 movement, and improve the separation effect and separation efficiency of the mineralized foam.

[0035] Optionally, 0° < α ≤ 30°. For example, the included angle α between the plate surface of the scraper 61 and the axial direction of the groove body 4 can be 1°, 10°, 20° or 30°. The included angle α between the plate surface of the scraper 61 and the axial direction of the groove body 4 can be designed according to the characteristics of the foam layer. The inventor of the utility model embodiment finds through research and verifies through experiments that when the included angle between the plate surface of the scraper 61 and the axial direction of the groove body 4 is within the above range, the rapid scraping of the scraper 61 can be further realized, the energy consumption is relatively low, and the scraping efficiency is relatively high. In addition, the scraper 61 with the above-mentioned angle can accurately scrape a thicker foam layer in order to quickly collect the high-grade concentrate on the surface of the foam layer.

[0036] In some examples, as shown in Figure 4 In the horizontal projection plane perpendicular to the axial direction of the groove body 4, the extension path of the outer peripheral contour of the scraper 61 is arc-shaped or involute-shaped. Since the scraper 61 is arc-shaped or involute-shaped, the extension path of the scraper 61 can be lengthened, the scraping amount can be improved, the resistance when the scraper 61 moves can be reduced, and the energy consumption when the scraper 61 moves can be reduced.

[0037] In other examples, as shown in Figure 2 and Figure 3 The scraper 61 is a flat plate, and the flat plate extends along the radial direction of the groove body 4. Thus, the processing and manufacturing of the scraper 61 can be facilitated, the applicability is wide, and the foam layer can be maintained to the greatest extent without being damaged in order to collect the highest-grade concentrate on the surface of the foam layer and improve the flotation effect of the flotation machine.

[0038] Optionally, the scraper 61 is multi-layered, and the multi-layered scrapers 61 are arranged in sequence along the axial direction of the groove body 4. It can be understood that the multi-layered scrapers 61 can be rotated simultaneously to improve the efficiency of the scraping device 6 in separating the mineralized foam. Of course, the multi-layered scrapers 61 can also be controlled to rotate respectively to adapt to the ore grade of the mineralized foam.

[0039] Specifically, the scraper 61 is at least two layers and is arranged in sequence along the axial direction of the groove body 4, each layer of the scraper 61 is a plurality of, the plurality of scrapers 61 of each layer is arranged in sequence along the circumferential direction of the groove body 4, and the number of the scrapers 61 of the upper layer is greater than that of the scrapers 61 of the lower layer. The flotation machine of the embodiment of the present application can improve the separation effect of the mineralized foam and improve the scraping efficiency of the scraper 61 by arranging at least two layers of scrapers 61.

[0040] For the adjacent two layers of scrapers 61, the number of scrapers 61 of the upper layer is greater than that of the lower layer. It can be understood that the plurality of scrapers 61 of the upper layer are arranged more densely, and the plurality of scrapers 61 of the lower layer are arranged more sparsely. The sparsely arranged scrapers 61 of the lower layer can sort the mineralized froth in the froth layer 421, and the densely arranged scrapers 61 of the upper layer can increase the scraping amount of the mineralized froth when rotating, so as to scrape a thicker froth layer, which is beneficial to improve the froth scraping efficiency of the scraper 61.

[0041] Optionally, as shown in Figure 1 The scraper 61 is in transmission connection with the rotating shaft 21. It can be understood that the rotor 22 and the scraper 61 share a power source, and the rotating shaft 21 can drive the rotor 22 and the scraper 61 to rotate at the same time, thereby improving the linkage of the flotation machine and reducing the production cost.

[0042] Further, the position of the scraper 61 along the axial direction of the tank 4 is adjustable, so that the scraping layer of the scraper 61 is adapted to the ore grade, thereby improving the compatibility of the flotation machine and expanding the application range of the flotation machine. For example, the scraper 61 can be installed on the rotating shaft 21 in a clamp type structure, and the position of the scraper 61 along the rotating shaft 21 is adjustable.

[0043] Optionally, as shown in Figure 3 The scraper 61 is provided with a hollow hole 611 in the thickness direction thereof. The scraper 61 of the flotation equipment in the embodiment of the present application is designed as a hollow structure, which can further reduce the resistance when the scraper 61 rotates, and can avoid the accumulation of froth over the scraper 61, thereby improving the froth scraping quality.

[0044] In some embodiments, the flotation machine further comprises a flushing device (not shown) arranged in the tank 4, the flushing device is arranged below and adjacent to the scraper 61, and the flushing device is used to flush water to the mineralized froth in the tank 4. It can be understood that the flushing device can flush water to the froth layer 421 to adjust the concentration of the ore pulp, flush the mineralized concentrate froth in the mineralized froth, realize secondary enrichment, reduce the entrainment of hydrophilic minerals, and improve the flotation effect of the flotation machine.

[0045] Optionally, as shown in Figure 1As shown, the column selection region is provided in the tank body 4, and the column selection region includes a lower region 41 located below the mineralization tank 1 and a communication region 43 located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank body 4. The mineral slurry containing other particles enters the column selection region. The flotation machine further includes an air charging device 5 in communication with the lower region 41 for charging air into the lower region 41 to perform column selection on the mineral slurry entering the column selection region from the mechanical stirring chamber 13. The communication region 43 is provided with a flow guide plate 14, and the lower end of the flow guide plate 14 is lower than the bottom surface of the mineralization tank 1.

[0046] During mineralization, the mineral slurry is fed into the mineralization tank 1 through the slurry inlet 11 in a downward direction. The rotor 22 rotates in the mechanical stirring chamber 13 to stir and disperse air into small bubbles. The particles adhere to the bubbles to form mineralized bubbles. The mineral slurry containing the mineralized bubbles and other particles not adhered to the bubbles can flow out of the slurry outlet 12 of the mineralization tank 1. The mineralized bubbles flow upward to the upper region 42. The mineral slurry containing the particles not adhered to the bubbles can flow out of the slurry outlet 12 of the mineralization tank 1 and enter the lower region 41 through the communication region 43. The particles not adhered to the bubbles can be column selected in the lower region 41 under the action of the mineralization gas supplied by the air charging device 5. The mineralized bubbles generated by the column selection flow through the communication region 43 and upwardly to the upper region 42. The particles not adhered to the bubbles after column selection fall into the discharge port 44 at the bottom of the tank body 4 under the action of gravity and are discharged, thereby achieving multiple flotation of the mineral slurry.

[0047] The flow guide plate 14 can guide the mineral slurry containing the other particles not adhered to the bubbles downwardly into the lower region 41 and guide the mineralized bubbles after column selection upwardly into the upper region 42. The flow guide plate 14 can reduce the turbulence degree of the mineral slurry and the mineralized bubbles in the communication region 43, avoid the trend of the mineral slurry flow becoming more chaotic, and be beneficial to column selection in the lower region 41, thereby improving the mineralization and flotation effect of the flotation machine. For example, the flow guide plate 14 is a plurality of flow guide plates 14 arranged in a circumferential direction of the mineralization tank 1.

[0048] Optionally, the upper surface of the flow guide plate 14 is flush with the top surface of the mineralization tank 1, and the lower surface of the flow guide plate 14 is lower than the bottom surface of the mineralization tank 1. Since the upper surface of the flow guide plate 14 is flush with the top surface of the mineralization tank 1, the flow guide plate 14 can avoid interfering with the turbulent flow field of the mineral slurry in the mineralization tank 1. Since the lower surface of the flow guide plate 14 is lower than the bottom surface of the mineralization tank 1, the flow guide plate 14 can be as close as possible to the lower region 41 downwardly to guide the mineralized bubbles after column selection upwardly into the upper region 42 and guide the particles not adhered to the bubbles downwardly into the lower region 41, thereby improving the guiding effect of the flow guide plate 14.

[0049] In some embodiments, as shown in Fig. 1, the upper region 42 and the lower region 41 are respectively provided with a turbulence suppression grid 3 adjacent to the mineralization tank 1. Figure 1 The turbulence suppression grid 3 can constrain the flow field of the upper region 42 and the lower region 41 to avoid the trend that the pulp flow of the region tends to be more chaotic, which is beneficial to improve the mineralization and flotation effect of the flotation machine.

[0050] Optionally, 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 the appropriate position according to different flotation minerals or flotation effects, so as to expand the application range of the flotation machine and have better flow guiding effect.

[0051] Optionally, the rotating shaft 21 has a gas supply channel 211 for supplying mineralization gas to the mechanical stirring cavity 13, and the rotor 22 is provided with a first gas injection hole (not shown) 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 mineralization gas for the mechanical stirring cavity 13, which has better use effect.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are 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.

[0053] In addition, the terms "first" and "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 with "first" and "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.

[0054] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, can understand the concrete meaning of above terms in the utility model according to specific circumstances.

[0055] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can be first and second features direct contact, or first and second features indirectly contact through intermediate medium.Moreover, first feature "over", "above" and "on" second feature, can be first feature directly above or obliquely above second feature, or just indicate that the horizontal height of first feature is higher than second feature.First feature "under", "below" and "under" second feature, can be first feature directly below or obliquely below second feature, or just indicate that the horizontal height of first feature is less than second feature.

[0056] In the utility model, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 utility model.In the specification, 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, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0057] 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 utility model, and the changes, modifications, replacements and variations of the above embodiments made by the ordinary skilled in the art are within the protection scope of the utility model.

Claims

1. A flotation machine, characterized in that The flotation machine comprises: a tank body, an axial direction of which extends in a vertical direction; a mineralization device, which comprises a rotor assembly and a mineralization tank arranged in the tank body, the mineralization tank having a mechanical stirring cavity therein, a bottom of the mineralization tank being provided with a pulp inlet for feeding pulp into the mechanical stirring cavity, and a top of the mineralization tank being provided with a pulp outlet for discharging pulp, the tank body having an upper region above the mineralization tank, mineralized bubbles in the pulp discharged from the mechanical stirring cavity entering the upper region, the upper region comprising a froth zone at an uppermost part thereof, the rotor assembly comprising a rotating shaft and a rotor, a lower end of the rotating shaft extending into the mechanical stirring cavity through the pulp outlet, and the rotor being mounted at the lower end of the rotating shaft and located in the mechanical stirring cavity; a bubble scraping device, which comprises a rotatable scraping plate arranged in the tank body and located in the froth zone, a plate surface of the scraping plate being at an angle α with respect to the axial direction of the tank body, wherein 0° < α < 90°.

2. The flotation machine of claim 1, characterized in that 0°＜α≤30°。 3. The flotation machine of claim 1, characterized in that In a horizontal projection plane perpendicular to the axial direction of the tank body, an extension path of an outer periphery contour of the scraping plate is in an arc shape or an involute shape.

4. The flotation machine of claim 1, characterized in that The scraping plate is a flat plate extending in a radial direction of the tank body.

5. The flotation machine of claim 1, wherein, The scraping plate is a multi-layered plate, and the multi-layered plate is arranged in sequence and at intervals in the axial direction of the tank body.

6. The flotation machine of claim 5, characterized in that The scraping plate is at least two layers and arranged at intervals in the axial direction of the tank body, each layer of the scraping plate is a plurality of layers, the plurality of layers of each layer is arranged at intervals in a circumferential direction of the tank body, and the number of the scraping plate of an upper layer is greater than that of a lower layer.

7. The flotation machine of claim 1, wherein, The scraping plate is provided with a hollow hole in a thickness direction thereof.

8. The flotation machine of claim 1, wherein, The scraping plate is in transmission connection with the rotating shaft, and a position of the scraping plate in the axial direction of the tank body is adjustable.

9. The flotation machine of claim 1, wherein, The flotation machine further comprises a flushing device arranged in the tank body, the flushing device being arranged below and adjacent to the scraping plate, and the flushing device being used for flushing water to the mineralized froth in the tank body.

10. The flotation machine according to any of claims 1 - 9, characterized in that, The tank body has a column selection region, the column selection region comprising a lower region below the mineralization tank and a communication region between an outer peripheral wall of the mineralization tank and an inner peripheral wall of the tank body, pulp containing other particles entering the column selection region, the flotation machine further comprising an aeration device in communication with the lower region, the aeration device being used for filling gas into the lower region to perform column selection on the pulp entering the column selection region from the mechanical stirring cavity, and the communication region being provided with a flow guide plate, a lower end of the flow guide plate being lower than a bottom surface of the mineralization tank, and the upper region and the lower region being respectively provided with a turbulence suppression grid adjacent to the mineralization tank.

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