A turbulent flotation machine suitable for efficient separation of ultrafine particles

Abstract

The present invention discloses a turbulent flotation machine suitable for efficient separation of ultrafine particles, comprising a flotation tank and a concentrate tank. The flotation tank is provided with a turbulent flotation mechanism located in the middle area and a static separation mechanism arranged around the turbulent flotation mechanism; the internal space of the inner cylinder forms a turbulent flotation zone, and the space between the inner cylinder and the inner wall of the flotation tank forms a static separation zone. The turbulent flotation machine provided by the present invention forms a turbulent flotation zone and a static separation zone that are physically isolated from each other in the flotation tank, forms a large number of microbubbles in the turbulent flotation zone through violent turbulence, realizes rapid and sufficient mineralization, and realizes efficient separation of foam and pulp in the static separation zone, thereby effectively improving the flotation effect and being suitable for efficient separation of ultrafine minerals. The turbulent flotation machine of the present invention has a fast flotation rate, occupies a small area, can reduce energy consumption, and has broad application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral separation, in particular to a turbulent flow flotation machine suitable for efficient separation of ultrafine particles. Background Art

[0002] With economic development and the deepening of human exploration of energy resources, the proportion of rich ores is becoming smaller and smaller. Low-grade ores that are mainly "poor, fine, and mixed" have become the main source of resource utilization. How to develop and utilize low-grade ores is a key issue in the energy and chemical industry. Since low-grade ores are mostly embedded in the raw ore as fine particles, the raw ore needs to be ground to an extremely fine particle size to fully dissociate. Re-election and other methods alone can no longer meet the needs of fine particle separation after dissociation. Improvements in mineral processing technology and equipment performance are becoming increasingly important. Flotation, the most widely used and effective mineral processing method for fine and ultrafine particles, has greatly increased its importance in mineral separation.

[0003] Flotation is a mineral separation method that utilizes differences in the physical and chemical properties of mineral surfaces. Froth flotation is widely used in industry. Its characteristic is that useful minerals selectively attach to air bubbles in the slurry and subsequently float to the surface, separating them from gangue. In the flotation of fine particles, flotation machines are commonly used, such as the flotation machine for efficient recovery of fine particles disclosed in patent CN101844113B and the high-intensity mechanical agitation and aspiration mineralization flotation machine disclosed in CN108714485A. However, as materials dissociate to particles below 20μm (referred to as ultrafine particles), their kinetic energy and inertial force are low, making it extremely difficult for conventional flotation machines to cause bubbles to collide with mineral particles and achieve recovery. The fluid environment in a flotation cell is extremely complex, and most particle recovery occurs in high-turbulence zones. High turbulence transfers more energy to the particles, increasing the probability and frequency of particle-bubble collisions, thereby improving flotation performance. The sorting conditions in conventional flotation machines are almost the same, with poor selectivity and serious mechanical entrainment of gangue minerals, which is not conducive to the selective recovery of ultrafine particles.

[0004] Ideal separation conditions require separating flotation into two zones: dynamic collision and static separation, while also physically isolating the two zones. The cyclone-static flotation column developed by the China University of Mining and Technology can create relatively ideal separation conditions and achieve good recovery results for fine particle flotation. The turbulence generated by the tube flow flotation in the flotation column improves the efficiency of particle-bubble collisions. After cyclone flotation and countercurrent flotation, the concentrate flows into the concentrate tank. However, the entire flotation process is lengthy, requires a large floor space, and has low flotation efficiency. Compared to flotation columns, flotation machines offer a shorter process and higher efficiency. However, conventional flotation machines cannot create the flotation conditions of dynamic collision and static separation, resulting in suboptimal flotation results (especially for ultrafine mineral particles).

[0005] Therefore, it is necessary to improve the existing technology to provide a more reliable solution. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to address the shortcomings of the above-mentioned prior art and provide a turbulent flow flotation machine suitable for the efficient separation of ultrafine particles. The present turbulent flow flotation machine, which focuses on dynamic collision and static separation flotation, can reduce space usage, combine slurry mixing and flotation, and complete the slurry mixing-flotation-separation process in a short time, thereby improving the separation rate and resolving the current equipment problems in ultrafine particle separation.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: a turbulent flotation machine suitable for efficient separation of ultrafine particles, comprising a flotation cell and a concentrate cell, wherein the flotation cell is provided with a turbulent flotation mechanism located in the middle area and a static separation mechanism arranged around the turbulent flotation mechanism;

[0008] The turbulent flow flotation mechanism includes a stator disposed in the middle of the flotation tank and a rotor rotatably disposed inside the stator. The stator includes an inner cylinder and a plurality of stator plates disposed on the inner wall of the inner cylinder. The rotor includes a rotating shaft inserted into the inner cylinder, a plurality of rotor plates disposed on the rotating shaft, and a variable frequency motor for driving the rotating shaft to rotate. The stator plate and the rotor plate are mutually interlocked, and a gap for the passage of slurry is always present between the two during the rotation of the rotor plate relative to the stator plate.

[0009] The static separation mechanism includes a top dispersion baffle disposed above the inner cylinder, a plurality of inner baffles spaced apart along the circumferential direction on the outer wall of the inner cylinder, and a plurality of outer baffles spaced apart on the inner wall of the flotation tank and arranged around the inner cylinder;

[0010] The inner space of the inner cylinder forms a turbulent flotation zone, and the space between the inner cylinder and the inner wall of the flotation tank forms a static separation zone.

[0011] Preferably, when viewed along a horizontal cross section, the rotor plates are radially arranged with the rotating shaft as the center, the stator plates are evenly spaced along the circumferential direction and arranged on the outer periphery of the rotor plates, and the stator plates and the rotor plates are staggered with each other;

[0012] In the vertical direction, the rotor plate is formed with rotor protrusions and rotor recesses spaced apart from each other, and the stator plate is formed with stator protrusions and stator recesses spaced apart from each other, the rotor protrusions fittingly extending into the stator recesses, and the stator protrusions fittingly extending into the rotor recesses, thereby forming a structure in which the rotor plate and the stator plate are interlocked with each other;

[0013] The shapes of the rotor convex portion and the stator concave portion match each other, and the shapes of the stator convex portion and the rotor concave portion match each other, so that when the rotor plate rotates relative to the stator plate, there is a gap for the slurry to pass between the rotor convex portion and the stator concave portion, and between the stator convex portion and the rotor concave portion.

[0014] Preferably, viewed along a vertical cross section, the rotor protrusion is rectangular, trapezoidal, triangular, L-shaped or other shapes, and the stator protrusion is rectangular, trapezoidal, triangular, L-shaped or other shapes.

[0015] Preferably, both the rotor protrusion and the stator protrusion are provided with a hollow structure.

[0016] Preferably, the hollow structure includes but is not limited to a transverse grid structure, a vertical grid structure, and an array through-hole structure.

[0017] Preferably, the rotor convex portion is trapezoidal, and the height of the rotor convex portion gradually decreases along the direction of the rotating shaft toward the inner cylinder; the stator convex portion is trapezoidal, and the height of the rotor convex portion gradually increases along the direction of the rotating shaft toward the inner cylinder;

[0018] The hollow structure is a vertical grid structure.

[0019] Preferably, when viewed along a horizontal cross-section, the inner space formed by the inner wall of the flotation cell is circular, a plurality of inner baffles are evenly spaced along the circumferential direction on the outer wall of the inner cylinder, a plurality of outer baffles are evenly spaced along the circumferential direction on the inner wall of the flotation cell, and the plurality of inner baffles and the plurality of outer baffles are staggered: each inner baffle is located between two outer baffles, and each outer baffle is located between two inner baffles;

[0020] The inner baffle plate is provided with a plurality of flow guide holes arranged in an array.

[0021] Preferably, the outer edge of the top dispersion baffle is bent downward at a certain angle to form an inverted disc shape. In a further preferred embodiment, the bending angle is 15-60°.

[0022] Preferably, viewed along a horizontal cross section, the outer baffle is perpendicular to the inner wall of the flotation tank.

[0023] Preferably, viewed along a horizontal section, the plurality of outer baffles are all connected to the inner wall of the flotation tank at the same angle, so that the plurality of outer baffles form a spiral arrangement structure, and the spiral direction is opposite to the rotation direction of the rotor.

[0024] Preferably, the turbulent flow flotation machine further comprises a feed pipe communicating with the lower side of the inner cylinder, an air intake pipe communicating with the bottom of the inner cylinder, and a rinse water device arranged above the flotation tank, and an air intake orifice plate is provided at the bottom of the inner cylinder;

[0025] A plurality of fixing members are arranged between the outer wall of the inner cylinder and the inner wall of the flotation tank.

[0026] The beneficial effects of the present invention are:

[0027] The turbulent flotation machine provided by the present invention forms a turbulent flotation zone and a static separation zone that are physically isolated from each other in the flotation cell. In the turbulent flotation zone, a large number of microbubbles are formed by violent turbulence to achieve rapid and sufficient mineralization, and in the static separation zone, efficient separation of foam and slurry is achieved, thereby effectively improving the flotation effect and being suitable for the efficient separation of ultrafine minerals.

[0028] In the present invention, through the structural design of the mutual interlocking of the stator plate and the rotor plate, combined with the hollow plate structure and the arrangement of the inner cylinder, a turbulent flow area with highly concentrated energy transfer and highly intense stirring can be formed, so that the bubbles can be dispersed to form a large number of microbubbles under high stirring, and the particles and microbubbles can fully collide in this area, thereby achieving efficient mineralization; compared with traditional flotation machines, a higher recovery rate can be obtained for the flotation of ultrafine minerals, and the added washing water device can effectively reduce the entrainment of gangue minerals in the concentrate.

[0029] The turbulent flow flotation machine of the present invention has a fast flotation rate. Due to the short flotation process, concentrated energy transmission area, short flotation residence time, and strong energy dissipation, the attachment time of bubble particles is greatly reduced, and the flotation rate is faster than that of traditional flotation equipment.

[0030] The present invention occupies a small area, has a high space utilization rate and a short flotation process due to the small number of pipeline connections in the equipment, and has a larger unit volume processing capacity than a traditional flotation machine.

[0031] The present invention can reduce energy consumption. In the present invention, the area where solid, liquid, gas collision, adsorption and other reactions occur is concentrated in the energy transmission area, that is, the turbulent flotation area. The energy utilization rate of the flotation area is high. Compared with conventional aerated stirring flotation machines, the present invention has lower energy consumption.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to the present invention;

[0034] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure at point A;

[0035] Figure 3 It is a schematic structural diagram of the stator plate and the rotor plate of the present invention;

[0036] Figure 4 Schematic diagrams of the structures of several different stator plates and rotor plates of the present invention;

[0037] Figure 5 Schematic diagrams of several different hollow structures of the present invention;

[0038] Figure 6 A schematic diagram of the arrangement structure of an outer baffle in another embodiment of the present invention;

[0039] Figure 7 The cumulative recovery curves of combustible materials of the present invention and conventional flotation machines are shown below:

[0040] Figure 8 These are the flotation index results of the present invention and the conventional flotation machine.

[0041] Description of reference numerals:

[0042] 1—flotation tank; 2—concentrate tank;

[0043] 3—turbulent flotation mechanism;

[0044] 31—stator; 310—inner cylinder; 311—stator plate; 311a—stator convex portion; 311b—stator concave portion;

[0045] 32—rotor; 320—rotating shaft; 321—rotor plate; 321a—rotor convex portion; 321b—rotor concave portion; 322—variable frequency motor;

[0046] 34—fixing parts;

[0047] 4—static separation mechanism; 41—top dispersion baffle; 42—inner baffle; 43—outer baffle; 421—diversion hole;

[0048] 5—Feed pipe; 6—Air inlet pipe; 7—Rinse water device. DETAILED DESCRIPTION

[0049] The present invention is further described in detail below with reference to the embodiments so that those skilled in the art can implement the invention with reference to the description.

[0050] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0051] Reference Figure 1-6 The present invention provides a turbulent flotation machine suitable for efficient separation of ultrafine particles, comprising a flotation cell 1 and a concentrate cell 2. The flotation cell 1 is provided with a turbulent flotation mechanism 3 located in the middle area and a static separation mechanism 4 arranged around the turbulent flotation mechanism 3.

[0052] The turbulent flotation mechanism 3 includes a stator 31 disposed in the middle of the flotation cell 1 and a rotor 32 rotatably disposed inside the stator 31. The stator 31 includes an inner cylinder 310 and a plurality of stator plates 311 disposed on the inner wall of the inner cylinder 310. The rotor 32 includes a rotating shaft 320 inserted into the inner cylinder 310, a plurality of rotor plates 321 disposed on the rotating shaft 320, and a variable frequency motor 322 for driving the rotating shaft 320 to rotate. The stator plate 311 and the rotor plate 321 are mutually interlocked, and a gap for the passage of slurry is always present between the rotor plate 321 and the stator plate 311 during the rotation of the rotor plate 321 relative to the stator plate 311.

[0053] The static separation mechanism 4 includes a top dispersion baffle 41 disposed above the inner cylinder 310, a plurality of inner baffles 42 spaced apart along the circumferential direction on the outer wall of the inner cylinder 310, and a plurality of outer baffles 43 spaced apart on the inner wall of the flotation tank 1 and arranged around the inner cylinder 310.

[0054] The inner space of the inner cylinder 310 forms a turbulent flotation zone, and the space between the inner cylinder 310 and the inner wall of the flotation tank 1 forms a static separation zone.

[0055] Furthermore, the turbulent flotation machine also includes a feed pipe 5 connected to the lower side of the inner cylinder 310, an air inlet pipe 6 connected to the bottom of the inner cylinder 310, and a washing water device 7 arranged above the flotation tank 1. The bottom of the inner cylinder 310 is provided with an air inlet plate; a plurality of fixing parts 34 are provided between the outer wall of the inner cylinder 310 and the inner wall of the flotation tank 1, and the fixing parts 34 are structures such as fixed rods or fixed plates.

[0056] Reference Figure 1 In the present invention, the overall working principle and process of the turbulent flow flotation machine are as follows:

[0057] The variable frequency motor 322 drives the rotor 32 to rotate, and the rotor 32 rotates relative to the stator 31. The fluid forms a high shear turbulent kinetic energy area during the shear process between the rotor 32 and the stator 31;

[0058] The mixture of ore pulp and flotation reagent is injected into the inner cylinder 310 through the feed pipe 5 and enters the turbulent flotation zone. Gas is input into the bottom of the inner cylinder 310 through the air inlet pipe 6, dispersed by the air inlet plate, and then enters the turbulent flotation zone. Under the strong stirring action of the rotor 32 and stator 31, the initially dispersed bubbles are also broken into dispersed fine bubbles under the vigorous rotation. The flotation reagent is fully dispersed, and the hydrophobic ultrafine particles in the ore pulp collide with the bubbles and are adsorbed, achieving mineralization.

[0059] After mineralization, bubbles gradually rise in the turbulent flotation zone, during which they are repeatedly acted upon by the stator 31 and rotor 32, and eventually overflow from the inner cylinder 310. The top dispersion baffle 41 then evenly pumps the slurry into the static separation zone. Under the influence of rotating inertia, the slurry is simultaneously guided by the dispersion cover, impacting the inner baffle 42, the outer cylinder wall, and the outer baffle 43, and then sinking.

[0060] The cooperation of the inner baffle 42 and the outer baffle 43 provided in the static separation zone can prevent the rotation of the slurry and foam discharged from the turbulent flotation zone due to the inertial force, so that the rotation of the slurry and foam gradually stops. The slurry is statically separated in this area, and the mineralized bubbles float upward to form a stable foam layer. The particles with poor hydrophobicity partially fall off, and the flushing water sprayed by the top washing water device 7 washes more hydrophobic particles entrained in the foam back into the slurry. The slurry in the static separation zone forms a stable downward laminar flow as a whole. The separated slurry is discharged from the bottom tailings outlet, and the foam entrained with concentrate overflows from the top to the concentrate tank 2, completing the entire flotation separation process.

[0061] In the present invention, a turbulent flotation zone and a static separation zone that are physically isolated from each other are constructed in the flotation cell 1. A large number of microbubbles are formed in the turbulent flotation zone by violent turbulence to achieve rapid and sufficient mineralization, and efficient separation of foam and pulp is achieved in the static separation zone, thereby effectively improving the flotation effect.

[0062] In the present invention, through the structural design of the mutual interlocking of the stator plate 311 and the rotor plate 321, combined with the setting of the inner cylinder 310, a turbulent area with highly concentrated energy transfer and highly intense stirring can be formed, so that the bubbles can be broken up to form a large number of microbubbles under high stirring, and the particles and microbubbles can fully collide in this area, thereby achieving efficient mineralization. Its specific structure is described in detail below.

[0063] Reference Figure 2 , wherein, viewed along a horizontal cross section, the plurality of rotor plates 321 are radially arranged with the rotating shaft 320 as the center, the plurality of stator plates 311 are evenly spaced along the circumferential direction and arranged on the outer periphery of the plurality of rotor plates 321, and the plurality of stator plates 311 and the plurality of rotor plates 321 are staggered with each other;

[0064] Reference Figure 3In the vertical direction, the rotor plate 321 is formed with a rotor protrusion 321a and a rotor recess 321b spaced apart from each other, and the stator plate 311 is formed with a stator protrusion 311a and a stator recess 311b spaced apart from each other. The rotor protrusion 321a fits into the stator recess 311b, and the stator protrusion 311a fits into the rotor recess 321b, thereby forming a structure in which the rotor plate 321 and the stator plate 311 are interlocked with each other.

[0065] The shapes of the rotor protrusion 321a and the stator recess 311b match each other, and the shapes of the stator protrusion 311a and the rotor recess 321b match each other, so that when the rotor plate 321 rotates relative to the stator plate 311, there is a gap for the slurry to pass between the rotor protrusion 321a and the stator recess 311b, and between the stator protrusion 311a and the rotor recess 321b.

[0066] Reference Figure 4 In the preferred embodiment, the rotor protrusion 321a is rectangular when viewed along the vertical cross section ( Figure 4 a) Trapezoid ( Figure 4 b), triangle ( Figure 4 c) or L-shaped ( Figure 4 d), the stator protrusion 311a is rectangular ( Figure 4 a) Trapezoid ( Figure 4 b), triangle ( Figure 4 c) or L-shaped ( Figure 4 d) It is understood that the shapes of the rotor protrusion 321a and the stator protrusion 311a include but are not limited to the above forms. In a further preferred embodiment, the rotor protrusion 321a and the stator protrusion 311a are both provided with a hollow structure.

[0067] Reference Figure 5 The hollow structure includes but is not limited to the following forms: horizontal grid structure ( Figure 5 a) Vertical grid structure ( Figure 5 b) Array through holes ( Figure 5 c) Structure.

[0068] Continue to refer to Figure 2 , wherein, viewed along a horizontal cross-section, the inner space formed by the inner wall of the flotation cell 1 is circular, a plurality of inner baffles 42 are evenly spaced along the circumferential direction on the outer wall of the inner cylinder 310, and a plurality of outer baffles 43 are evenly spaced along the circumferential direction on the inner wall of the flotation cell 1, and the plurality of inner baffles 42 and the plurality of outer baffles 43 are staggered: each inner baffle 42 is located between two outer baffles 43, and each outer baffle 43 is located between two inner baffles 42.

[0069] The inner baffle plate 42 has a plurality of flow guide holes 421 arranged in an array.

[0070] In a preferred embodiment, the outer edge of the top dispersion baffle 41 is bent downward at a certain angle to form an inverted disc shape, and the top dispersion baffle 41 is fixedly sleeved on the rotating shaft 320. In a further preferred embodiment, the bending angle is 15-60 degrees, and in a further preferred embodiment, it is 45 degrees.

[0071] In a preferred embodiment, referring to Figure 2 , along the horizontal cross section, the outer baffle 43 is perpendicular to the inner wall of the flotation tank 1. In another preferred embodiment, referring to Figure 6 When viewed along a horizontal cross-section, the outer baffles 43 are all connected to the inner wall of the flotation cell 1 at the same angle, forming a spiral arrangement with the spiral direction opposite to the rotation direction of the rotor 32. Because the outer baffles 43 are tilted toward the direction of slurry rotation, they can effectively slow the slurry's rotation speed.

[0072] The air inlet pipe 6 and the feed pipe 5 are both provided with valves to adjust the feed speed of the flotation machine.

[0073] Among them, the air intake method at the bottom of the turbulent flotation zone can be changed to porous medium transportation, jet air intake, negative pressure self-priming or jet bubble generator, etc.

[0074] Among them, if the flotation machine is used as a single-circulation equipment, all or part of the tailings can be re-injected into the flotation machine from the feed port through a pump for re-flotation. If the flotation machine is used as a continuous production equipment, production can be carried out by connecting multiple flotation machines in series.

[0075] The above is the overall scheme of the present invention. Specific embodiments are provided below based on the overall scheme to further illustrate the present invention.

[0076] Example 1

[0077] In this embodiment, as a preferred embodiment, the rotor protrusion 321a is trapezoidal, and the height of the rotor protrusion 321a gradually decreases along the direction from the rotating shaft 320 to the inner cylinder 310; the stator protrusion 311a is trapezoidal, and the height of the rotor protrusion 321a gradually increases along the direction from the rotating shaft 320 to the inner cylinder 310. Figure 4 As shown in b. The hollow structure is a vertical grid structure, such as Figure 5 As shown in b.

[0078] In this embodiment, viewed along a horizontal cross section, the outer baffle plate 43 is perpendicular to the inner wall of the flotation tank 1 .

[0079] Example 2

[0080] Reference Figure 6 In this embodiment, the difference from Example 1 is that: along the horizontal cross-section, the multiple outer baffles 43 are all connected to the inner wall of the flotation cell 1 at an angle of 75° (the acute angle between the outer baffles 43 and the inner wall of the flotation cell 1), so that the multiple outer baffles 43 form a spiral arrangement structure, and the spiral direction is opposite to the rotation direction of the rotor 32.

[0081] To further illustrate the present invention, flotation experiments were conducted on anthracite sludge from a mine in Xuehu using the ultrafine turbulent flow flotation machine (3L) described in Example 1 and a conventional flotation machine (a small laboratory flotation machine, model: XFD-3L). The particle size of the sludge entering the flotation chamber was below 20 μm, the slurry concentration was 8%, kerosene and MIBC were used as reagents, the feed rate was 4 L / min, and the aeration rate was 2.5 L / min. The cumulative recovery curve of combustible matter in the sludge under these conditions is shown in Figure 2. Figure 7 As shown in the figure, when the flotation is carried out for 4 minutes, the combustible recovery rate of the present invention reaches 70%, while that of the conventional flotation machine is less than 50%; the final recovery rate and concentrate ash content are shown in the figure. Figure 8 As shown in the figure, the recovery rate of the present invention is 71.44% and the concentrate ash content is 12.35%, while the recovery rate of the conventional flotation machine is 60.5% and the concentrate ash content is 14.91%, which proves that the ultrafine particle turbulent flow flotation machine has a stronger and faster flotation recovery capacity for ultrafine mineral particles.

[0082] The above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and the above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A turbulent flotation machine suitable for efficient separation of ultrafine particles, comprising a flotation cell and a concentrate cell, characterized in that: The flotation tank is provided with a turbulent flow flotation mechanism located in the middle area and a static separation mechanism arranged around the turbulent flow flotation mechanism; The turbulent flow flotation mechanism includes a stator disposed in the middle of the flotation tank and a rotor rotatably disposed inside the stator. The stator includes an inner cylinder and a plurality of stator plates disposed on the inner wall of the inner cylinder. The rotor includes a rotating shaft inserted into the inner cylinder, a plurality of rotor plates disposed on the rotating shaft, and a variable frequency motor for driving the rotating shaft to rotate. The stator plate and the rotor plate are mutually interlocked, and a gap for the passage of slurry is always present between the two during the rotation of the rotor plate relative to the stator plate. The static separation mechanism includes a top dispersion baffle disposed above the inner cylinder, a plurality of inner baffles spaced apart along the circumferential direction on the outer wall of the inner cylinder, and a plurality of outer baffles spaced apart on the inner wall of the flotation tank and arranged around the inner cylinder; The inner space of the inner cylinder forms a turbulent flotation zone, and the space between the inner cylinder and the inner wall of the flotation tank forms a static separation zone.

2. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 1, characterized in that: When viewed along a horizontal cross section, the rotor plates are radially arranged with the rotating shaft as the center, and the stator plates are evenly spaced along the circumferential direction and arranged on the outer periphery of the rotor plates, and the stator plates and the rotor plates are staggered with each other. In the vertical direction, the rotor plate is formed with rotor protrusions and rotor recesses spaced apart from each other, and the stator plate is formed with stator protrusions and stator recesses spaced apart from each other, the rotor protrusions fittingly extending into the stator recesses, and the stator protrusions fittingly extending into the rotor recesses, thereby forming a structure in which the rotor plate and the stator plate are interlocked with each other; The shapes of the rotor convex portion and the stator concave portion match each other, and the shapes of the stator convex portion and the rotor concave portion match each other, so that when the rotor plate rotates relative to the stator plate, there is a gap for the slurry to pass between the rotor convex portion and the stator concave portion, and between the stator convex portion and the rotor concave portion.

3. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 2, characterized in that: Viewed along a vertical cross section, the rotor protrusion is rectangular, trapezoidal, triangular or L-shaped, and the stator protrusion is rectangular, trapezoidal, triangular or L-shaped.

4. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 3, characterized in that: The rotor convex portion and the stator convex portion are both provided with a hollow structure; The hollow structure is a horizontal grid structure, or a vertical grid structure, or an array through-hole structure.

5. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 4, characterized in that: The rotor convex portion is trapezoidal, and the height of the rotor convex portion gradually decreases along the direction of the rotating shaft toward the inner cylinder; the stator convex portion is trapezoidal, and the height of the rotor convex portion gradually increases along the direction of the rotating shaft toward the inner cylinder; The hollow structure is a vertical grid structure.

6. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 1, characterized in that: When viewed along a horizontal cross-section, the inner space formed by the inner wall of the flotation cell is circular, a plurality of inner baffles are evenly spaced along the circumferential direction on the outer wall of the inner cylinder, and a plurality of outer baffles are evenly spaced along the circumferential direction on the inner wall of the flotation cell, and the plurality of inner baffles and the plurality of outer baffles are staggered: each inner baffle is located between two outer baffles, and each outer baffle is located between two inner baffles; The inner baffle plate is provided with a plurality of flow guide holes arranged in an array.

7. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 1, characterized in that: The outer edge of the top dispersing baffle is bent downward by 15-60 degrees to form an inverted disc shape.

8. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 7, characterized in that: Viewed along a horizontal cross section, the outer baffle is perpendicular to the inner wall of the flotation tank.

9. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to claim 7, characterized in that: Viewed along a horizontal cross section, the plurality of outer baffles are all connected to the inner wall of the flotation tank at the same angle, so that the plurality of outer baffles form a spiral arrangement structure, and the spiral direction is opposite to the rotation direction of the rotor.

10. The turbulent flow flotation machine suitable for efficient separation of ultrafine particles according to any one of claims 1 to 9, characterized in that: The turbulent flow flotation machine further comprises a feed pipe communicating with the lower side of the inner cylinder, an air intake pipe communicating with the bottom of the inner cylinder, and a rinse water device arranged above the flotation tank, wherein the bottom of the inner cylinder is provided with an air intake orifice plate; A plurality of fixing members are arranged between the outer wall of the inner cylinder and the inner wall of the flotation tank.

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