Flotation machine and flotation method

Abstract

The invention provides a flotation machine and a flotation method, and relates to the technical field of flotation machines. The flotation machine structurally comprises a flotation box, a mounting sleeve is arranged at the top of the flotation box, a shaft rod is rotationally arranged in the mounting sleeve, a first stirring mechanism is mounted on the shaft rod, a pipeline piece connected with the mounting sleeve is arranged on the shaft rod in a sleeving mode, and a gas input pipe is arranged on the pipeline piece; a second stirring mechanism with the rotating direction opposite to that of the first stirring mechanism is arranged on the pipeline piece, a drainage mechanism used for draining gas is arranged on the pipeline piece, and an input opening communicated with the flotation box is formed in the side wall of the flotation box; the characteristic that the first stirring mechanism and the second stirring mechanism rotate in opposite directions can enhance disturbance of the slurry; a drainage mechanism is arranged on the pipeline piece, high-pressure gas can be divided into multiple strands to be guided into the bottom of the flotation box, and the high-pressure gas is dispersed in multiple areas of slurry; and the slurry generates more flotation bubbles under the action of high-pressure gas, so that the flotation effect of the structure is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flotation machines, and in particular to a flotation machine and a flotation method. Background Art

[0002] Flotation refers to the mineral processing process of floating solid minerals from a water suspension (ore pulp) based on the differences in the physical and chemical properties of the mineral surface. Flotation has been widely used in the mineral processing industry and is most suitable for sorting low-grade, fine-grained impregnated ores. The flotation process uses a surfactant-foaming agent that can generate a large number of bubbles. When air is introduced into the water or air enters the water due to the agitation of the water, the hydrophobic end of the surfactant is oriented toward the air side of the bubble at the gas-liquid interface, and the hydrophilic end remains in the solution, forming bubbles. Another type of surfactant that acts as a collector is adsorbed on the surface of solid mineral powder. This adsorption has a certain selectivity depending on the properties of the mineral. Its basic principle is to use the lattice defects on the crystal surface, and the outward hydrophobic end is partially inserted into the bubble, so that during the flotation process, the bubble may take away the specified mineral powder to achieve the purpose of mineral processing.

[0003] At present, the flotation equipment includes a flotation tank and a flow dividing component for realizing the jet mixing function, a high-pressure injection component for realizing the turbulent mixing function, and a lower stirring component for realizing the stirring mixing function. However, the self-aspiration flotation equipment disclosed in the prior art has low processing efficiency and general aeration effect. It can only aspirate the slurry once, resulting in weak fluidity of the slurry; it is easy to float with the flotation of the slurry, and the small slag in the slurry is difficult to float, thereby causing the flotation effect to deteriorate, and slag precipitation is easy to form at the bottom of the flotation tank, and the slag precipitated at the bottom is difficult to be floated by bubbles. Summary of the invention

[0004] The object of the present invention is to provide a flotation machine and a flotation method, which can solve the problems raised by the above-mentioned background technology in view of the deficiencies of the prior art.

[0005] The technical solution of the present invention is achieved in this way:

[0006] The present invention provides a flotation machine, comprising a flotation box, a mounting sleeve is arranged on the top of the flotation box, a shaft is rotatably arranged in the mounting sleeve, a first stirring mechanism is mounted on the shaft, a pipeline member connected to the mounting sleeve is sleeved on the shaft, a gas input pipe is arranged on the pipeline member, a second stirring mechanism with a rotation direction opposite to that of the first stirring mechanism is arranged on the pipeline member, a drainage mechanism for draining gas is arranged on the pipeline member, and an input port connected to the first stirring mechanism is opened on the side wall of the flotation box.

[0007] In some technical solutions of the present invention, the pipeline component includes a main pipe and a sub-pipe, the main pipe and the sub-pipe are connected after being spliced ​​together, the main pipe is connected to the installation sleeve, a sealing gasket is provided between the main pipe and the installation sleeve, and a sealing bearing connected to the sealing gasket is provided on the shaft rod.

[0008] In some technical schemes of the present invention, the drainage mechanism includes a gas delivery channel opened in the shaft, and a plurality of gas delivery holes connected to the gas delivery channel are opened on the outer wall of the shaft, and the gas delivery channel extends outward after passing through the shaft; an annular conduit connected to the main pipe is provided on the main pipe, and a plurality of guide pipes are surrounded on the annular conduit, and output pipes are provided on the free ends of the guide pipes, and the openings of the output pipes face the opening of the gas delivery channel.

[0009] In some technical solutions of the present invention, the first stirring mechanism includes a fixed seat installed on the shaft rod, and a plurality of arc-shaped first fan blades are arranged around the side wall of the fixed seat opposite to the auxiliary pipe, and the inner arc surface of any first fan blade is opposite to the outer arc surface of the adjacent first fan blade.

[0010] In some technical solutions of the present invention, a first cavity connected to the air transmission channel is opened in the fixing seat, a second cavity connected to the first cavity is opened in the first fan blade, and a plurality of capillary pores connected to the second cavity are opened on the outer wall of the first fan blade.

[0011] In some technical schemes of the present invention, the second stirring mechanism includes a mounting ring installed on the auxiliary pipe, a mounting seat is rotatably provided on the mounting ring, and a plurality of second blades are arranged around the side wall of the mounting seat facing away from the pipeline member, and the inner arc surface of any second blade is opposite to the outer arc surface of the adjacent second blade.

[0012] In some technical solutions of the present invention, an annular inner boss is provided in the main pipe, a frustum-shaped air guide channel is provided on the inner side wall of the inner boss, and the small diameter end of the air guide channel faces the annular conduit.

[0013] In some technical solutions of the present invention, a mounting bracket is provided on the top of the flotation box, a first drive motor is provided on the mounting bracket, a main transmission wheel is provided on the output end of the first drive motor, and a first transmission disk connected to the main transmission wheel is provided on the top of the shaft.

[0014] In some technical schemes of the present invention, a collecting trough is provided on the top of the flotation box, a mounting shaft is rotatably provided on one side of the top of the flotation box close to the collecting trough, scrapers are provided on both sides of the mounting shaft, a second drive motor is provided on the top of the flotation box, a reducer is provided on the top of the flotation box that is transmission-connected to the second drive motor, and the reducer is transmission-connected to the mounting shaft.

[0015] A flotation method, comprising the above-mentioned flotation machine, for recovering mineral particles containing precious metals from mineral particles suspended in a slurry;

[0016] The slurry must first be introduced into the flotation box from the input port, and then the first drive motor is started to force the shaft to rotate and stir the slurry;

[0017] The high-pressure gas is introduced into the pipeline through the gas input pipe and passed into the first fan blade connected to the gas transmission channel and then discharged from the capillary pores; at the same time, the high-pressure gas enters the drainage mechanism connected to the pipeline and is introduced from the output pipe to the bottom of the flotation box and blown to the second stirring mechanism; the flotation drum is generated by the two groups of gas offset to float the fine mineral particles in the slurry;

[0018] The high-pressure gas outputted from the output pipe will blow the second stirring mechanism to make a rotational movement opposite to the second stirring mechanism to increase the slurry disturbance and generate flotation bubbles, so that the fine mineral particles and the flotation bubbles adhere to and float upward.

[0019] Compared with the prior art, the present invention has at least the following advantages or beneficial effects:

[0020] The pipeline is used to introduce high-pressure gas into the bottom of the flotation box to act on the first stirring mechanism, and cooperate with the first stirring mechanism to stir the slurry to strengthen the disturbance of the slurry, so as to avoid the precipitation of the substances in the slurry. The pipeline is provided with a gas input pipe for connecting with the external high-pressure gas transmission equipment. The pipeline is provided with a second stirring mechanism with a rotation direction opposite to the first stirring mechanism. The structure of the two rotating in opposite directions can strengthen the disturbance of the slurry, so that the slurry produces more flotation bubbles under the action of the high-pressure gas, thereby improving the flotation effect of the structure; the pipeline is provided with a drainage mechanism for drainage gas, which can divide the high-pressure gas into multiple streams and introduce them into the bottom of the flotation box, so that when the high-pressure gas is input into the slurry, it will not be concentrated in one area, but dispersed in multiple areas, thereby increasing the contact area between the slurry and the high-pressure gas, thereby generating more flotation bubbles in the slurry. The side wall of the flotation box is provided with an input port connected thereto, so that the slurry can enter the flotation box with a large flow rate, impact the slurry that enters the flotation box first, and increase the disturbance ability of the slurry;

[0021] A plurality of capillary pores connected to the second cavity are provided on the outer wall of the first blade, so that the contact area between the high-pressure gas and the slurry can be increased, so that the slurry can be impacted by the high-pressure gas while being stirred, and then a large number of flotation bubbles are generated, thereby increasing the flotation effect of the substances in the slurry;

[0022] When the first blade rotates counterclockwise and the second blade rotates clockwise, shear force can be generated, thereby stirring the slurry in a positive and negative direction, increasing the number of flotation bubbles generated by the slurry under high-pressure gas, thereby improving the flotation effect of the structure on the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the flotation box of the present invention;

[0026] Figure 3 It is a schematic diagram of the combination of the drainage mechanism and the pipeline member in the present invention;

[0027] Figure 4 It is a cross-sectional structural schematic diagram of the drainage mechanism and the pipeline member in the present invention;

[0028] Figure 5 It is a schematic diagram of the installation structure of the guide tube and the annular conduit in the present invention;

[0029] Figure 6 It is a schematic diagram of the layout structure of the first fan blade and the second fan blade in the present invention;

[0030] Figure 7 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0031] Figure 8 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0032] Icons: 1. Flotation box; 2. Collecting tank; 3. First drive motor; 4. First transmission disc; 5. Mounting bracket; 6. Fixed bracket; 7. Mounting sleeve; 8. Second drive motor; 9. Reducer; 10. Second transmission disc; 11. Mounting shaft; 12. Scraper; 13. Lead-out port; 14. Annular duct; 15. Guide pipe; 16. Inspection port; 17. Shaft; 18. Seal; 19. Gas input pipe; 20. Mounting seat; 21. Second blade; 22. Output pipe; 23. Main pipe; 24. Sub-pipe; 25. First blade; 26. Gas guide channel; 27. Gas transmission channel; 28. Gas transmission hole; 29. ​​Mounting ring; 30. Fixed seat; 31. Capillary pore; 32. Input port. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example

[0036] Please refer to Figure 1-Figure 8 shown.

[0037] The present invention provides a flotation machine, such as Figure 1 , Figure 2 As shown, it includes a flotation box 1, which is a rectangular box structure; a fixing frame 6 is welded to the top of the flotation box 1 along its length direction; a mounting sleeve 7 is slidably provided on the fixing frame 6, and the mounting sleeve 7 is cylindrical, and a shaft 17 is rotatably provided in the mounting sleeve 7, and the shaft 17 is rotatably arranged in the mounting sleeve 7 through a bearing, and a first stirring mechanism is installed on the shaft 17 for stirring the slurry entering the flotation box, strengthening the disturbance of the slurry, and avoiding the precipitation of the substances in the slurry; a pipe member connected to the mounting sleeve 7 is sleeved on the shaft 17, which is used to introduce high-pressure gas into the bottom of the flotation box 1 to act on the first stirring mechanism, and cooperate with the first stirring mechanism to stir the slurry and strengthen the disturbance of the slurry, so as to avoid the precipitation of the substances in the slurry, and the pipeline member is provided with a gas input pipe 19 for The pipeline is connected to an external high-pressure gas transmission device, and a second stirring mechanism with a rotation direction opposite to that of the first stirring mechanism is provided on the pipeline. The structures with opposite rotation directions of the two can enhance the disturbance of the slurry, so that the slurry generates more flotation bubbles under the action of the high-pressure gas, thereby improving the flotation effect of the structure; the pipeline is provided with a drainage mechanism for drainage gas, which can divide the high-pressure gas into multiple streams and introduce them into the bottom of the flotation box 1, so that when the high-pressure gas is input into the slurry, it is not concentrated in one area, but dispersed in multiple areas, thereby increasing the contact area between the slurry and the high-pressure gas, thereby generating more flotation bubbles in the slurry, and an input port 32 connected thereto is provided on the side wall of the flotation box 1, which is convenient for a large flow of slurry to enter the flotation box 1, impact the slurry that first enters the flotation box 1, and increase the disturbance capacity of the slurry.

[0038] In some technical schemes of the present invention, the pipeline parts include a main pipe 23 and a sub-pipe 24. The main pipe 23 and the sub-pipe 24 are connected to each other through flanges and bolts. A sealing gasket is provided between the main pipe 23 and the sub-pipe 24 to increase the sealing effect of the two and prevent high-pressure gas from leaking from between the main pipe 23 and the sub-pipe 24. The main pipe 23 is connected to the mounting sleeve 7 through a flange connection. A sealing gasket is provided between the main pipe 23 and the mounting sleeve 7. A sealing bearing connected to the sealing gasket is provided on the shaft rod 17 to prevent high-pressure gas from leaking from the gap between the shaft rod 17 and the sealing gasket, causing the problem of high-pressure gas being wasted.

[0039] Furthermore, there are two sealed bearings on the shaft 17, and the two sealed bearings are respectively located in the main pipe 23 and the auxiliary pipe 24, so as to enclose the shaft 17, the main pipe 23 and the auxiliary pipe 24 into a relatively sealed space.

[0040] In some technical schemes of the present invention, the drainage mechanism includes a gas delivery channel 27 opened in the lower end of the shaft 17, and a plurality of gas delivery holes 28 connected to the gas delivery channel 27 are opened on the outer wall of the shaft 17. The gas delivery holes 28 are arranged in a trumpet shape, and the small diameter end of the gas delivery hole 28 is connected to the gas delivery channel 27. The gas delivery channel 27 passes through the shaft 17 and is connected to the outside world, forming a blind hole shape; the main pipe 23 is provided with an annular conduit 14 connected thereto, and the annular conduit 14 is provided with a plurality of through holes connected to the main pipe 23 to improve the gas delivery efficiency, and the annular conduit 14 is surrounded by a plurality of L-shaped guide pipes 15, and the free ends of the guide pipes 15 are all provided with output pipes 22, and the angle between the output pipes 22 and the guide pipes 15 is an acute angle, and the opening of the output pipes 22 faces the opening of the gas delivery channel 27. It can form a counter-flow with the high-pressure gas output from the gas delivery channel 27, and generate a flotation drum in the slurry to float the fine mineral particles in the slurry.

[0041] Preferably, a portion of the shaft 17 extends out of the secondary tube 24 .

[0042] In some technical schemes of the present invention, the first stirring mechanism includes a fixed seat 30 installed on the shaft rod 17, the fixed seat 30 and the free end of the shaft rod 17 are detachably connected by bolts, and a plurality of arc-shaped first blades 25 are arranged around the side wall opposite to the auxiliary pipe 24. The first blades 25 and the fixed seat 30 are integrally formed, and the two are integrally formed by turning technology, and the inner arc surface of any first blade 25 is opposite to the outer arc surface of the adjacent first blade 25; the contact area between the first blade 25 and the slurry can be increased.

[0043] In some technical schemes of the present invention, a first cavity connected to the gas transmission channel 27 is opened in the fixed seat 30, a second cavity connected to the first cavity is opened in the first blade 25, and a plurality of capillary pores 31 connected to the second cavity are opened on the outer wall of the first blade 25. Through the above arrangement, the contact area between the high-pressure gas and the slurry can be increased, so that the slurry can be impacted by the high-pressure gas while being stirred, and then a large number of flotation bubbles are generated, thereby increasing the flotation effect of the substance in the slurry.

[0044] In some technical solutions of the present invention, the second stirring mechanism includes a mounting ring 29 mounted on the auxiliary pipe 24, the mounting ring 29 and the auxiliary pipe 24 are integrally formed by welding, a mounting seat 20 is rotatably provided on the mounting ring 29 through a bearing, a plurality of second blades 21 are arranged around the side wall of the mounting seat 20 away from the pipeline member, and the second blades and the first blades form a turbine structure through the above arrangement, which can increase the disturbance effect of the slurry under the above structure, and the inner arc surface of any second blade 21 is opposite to the outer arc surface of the second blade 21 adjacent to it; the contact area between the first blade 25 and the slurry can be increased. Since the angle between the output pipe 22 and the guide pipe 15 is an acute angle, the opening of the output pipe 22 faces the opening of the gas transmission channel 27, and the high-pressure gas output from the output pipe 22 acts on the second blade 21, so that the second stirring mechanism and the first stirring mechanism move in the opposite direction of rotation, avoiding the addition of an additional driving device to the second stirring mechanism, achieving the purpose of saving resources and simplifying the structure.

[0045] Preferably, the inner arc surface of the second blade 21 is arranged opposite to the inner arc surface of the first blade 25. If the first blade 21 rotates counterclockwise and the second blade 21 rotates clockwise, shear force can be generated, thereby stirring the slurry in a positive and negative direction, increasing the number of flotation bubbles generated by the slurry under high-pressure gas, thereby improving the flotation effect of the present structure on the slurry.

[0046] In some technical schemes of the present invention, an annular inner boss is provided in the main pipe 23, and a frustum-shaped air guide channel 26 is opened on the inner side wall of the inner boss. The small diameter end of the air guide channel 26 faces the annular conduit 14. The high-pressure gas arranged in this way passes through the air guide channel 26, which can reduce the flow area of ​​the high-pressure gas, thereby avoiding the loss of the flow velocity of the high-pressure gas and ensuring that the flow rate of the high-pressure gas will not suffer a large loss after being discharged from the guide pipe 15.

[0047] In some technical schemes of the present invention, a mounting bracket 5 is fixed to the top of the flotation box 1 by bolts, a first drive motor is provided on the mounting bracket 5, a main drive wheel is provided on the output end of the first drive motor, a first drive plate 4 connected to the main drive wheel is provided on the top of the shaft 17, the main drive wheel and the first drive plate 4 are connected by belt drive, and the shaft 17 can be driven to periodically drive the first stirring mechanism to perform circular motion, continuously stir the slurry, and increase the disturbance capacity of the slurry.

[0048] In some technical schemes of the present invention, a collecting tank 2 is provided on the top of the flotation box 1, and the collecting tank 2 is used to collect minerals wrapped by flotation bubbles, and then introduce them from the outlet 13 to the next process for secondary processing. A mounting shaft 11 is rotatably provided on one side of the top of the flotation box 1 close to the collecting tank 2, and scrapers 12 are provided on both sides of the mounting shaft 11. A second drive motor is provided on the top of the flotation box 1, and a reducer 9 is provided on the top of the flotation box 1 that is transmission-connected to the second drive motor. The reducer 9 is connected to a second transmission disc 10 arranged on the mounting shaft 11 through a belt drive. The above structure can bring the flotation bubbles enriched in the upper part of the flotation box 1 out of the flotation box 1 through the scraper, and then enter the collecting tank 2 through the scraper 12, so that the mineral particles of precious metals are floated out of the slurry.

[0049] The flotation method of the flotation machine comprises the above-mentioned flotation machine, which is used to recover mineral particles containing precious metals from mineral particles suspended in a slurry;

[0050] The slurry must first be introduced into the flotation box 1 from the input port 32, and then the first drive motor is started to force the shaft 17 to rotate and stir the slurry;

[0051] At the same time, the high-pressure gas is introduced into the pipeline through the gas input pipe 19 and enters the first fan blade 25 connected to the gas delivery channel 27, and then discharged from the capillary pores 31;

[0052] The high-pressure gas goes up in the pipe part, enters the output pipe 22 connected to the pipe part, and is introduced into the bottom of the flotation box 1 and blown to the second stirring mechanism; the two groups of gases are used to generate counter-flow, so that a flotation drum is generated in the slurry to float fine mineral particles;

[0053] The high-pressure gas output by the output pipe 22 will blow the second stirring mechanism to make a rotational movement in the opposite direction to the second stirring mechanism to increase the slurry disturbance and generate flotation bubbles, so that the fine-grained mineral particles adhere to the flotation bubbles and float up; the flotation bubbles enriched in the upper part of the flotation box 1 are brought out of the flotation box 1 through the rotating scraper 12, and then enter the collecting tank through the scraper 12 to float the mineral particles of precious metals out of the slurry.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flotation machine, characterized in that: The invention comprises a flotation box (1), wherein a mounting sleeve (7) is provided on the top of the flotation box (1), a shaft (17) is rotatably provided in the mounting sleeve (7), a first stirring mechanism is installed on the shaft (17), a pipe member connected to the mounting sleeve (7) is sleeved on the shaft (17), a gas input pipe (19) is provided on the pipe member, a second stirring mechanism with a rotation direction opposite to that of the first stirring mechanism is provided on the pipe member, a drainage mechanism for draining gas is provided on the pipe member, and an input port (32) connected to the first stirring mechanism is provided on the side wall of the flotation box (1).

2. A flotation machine according to claim 1, characterized in that: The pipeline component comprises a main pipe (23) and a secondary pipe (24); the main pipe (23) and the secondary pipe (24) are connected to each other after being spliced ​​together; the main pipe (23) is connected to the mounting sleeve (7); a sealing gasket is provided between the main pipe (23) and the mounting sleeve (7); and a sealing bearing connected to the sealing gasket is provided on the shaft rod (17).

3. A flotation machine according to claim 2, characterized in that: The drainage mechanism comprises an air delivery channel (27) opened in the shaft (17); a plurality of air delivery holes (28) in communication with the air delivery channel (27) are opened on the outer wall of the shaft (17); the air delivery channel (27) passes through the shaft (17) and extends outward; the main pipe (23) is provided with an annular conduit (14) in communication with the main pipe (23); a plurality of guide pipes (15) are arranged around the annular conduit (14); the free ends of the guide pipes (15) are each provided with an output pipe (22); the opening of the output pipe (22) faces the opening of the air delivery channel (27).

4. A flotation machine according to claim 3, characterized in that: The first stirring mechanism comprises a fixing seat (30) mounted on the shaft (17), and a plurality of arc-shaped first blades (25) are arranged around the side wall of the fixing seat (30) opposite to the auxiliary pipe (24), and the inner arc surface of any first blade (25) is opposite to the outer arc surface of the adjacent first blade (25).

5. A flotation machine according to claim 4, characterized in that: A first cavity connected to the air delivery channel (27) is provided in the fixing seat (30), a second cavity connected to the first cavity is provided in the first fan blade (25), and a plurality of capillary pores (31) connected to the second cavity are provided on the outer wall of the first fan blade (25).

6. A flotation machine according to claim 2, characterized in that: The second stirring mechanism comprises a mounting ring (29) mounted on the auxiliary pipe (24), a mounting seat (20) being rotatably provided on the mounting ring (29), a plurality of second blades (21) being arranged around the side wall of the mounting seat (20) facing away from the pipe member, and an inner arc surface of any second blade (21) is opposite to an outer arc surface of an adjacent second blade (21).

7. A flotation machine according to claim 3, characterized in that: An annular inner boss is provided in the main pipe (23), a frustum-shaped air guide channel (26) is provided on the inner side wall of the inner boss, and the small diameter end of the air guide channel (26) faces the annular conduit (14).

8. A flotation machine according to claim 1, characterized in that: A mounting bracket (5) is provided on the top of the flotation box (1), a first drive motor (3) is provided on the mounting bracket (5), a main transmission wheel is provided on the output end of the first drive motor (3), and a first transmission disc (4) drivingly connected to the main transmission wheel is provided on the top of the shaft (17).

9. A flotation machine according to claim 1, characterized in that: The top of the flotation box (1) is provided with a collecting trough (2); a mounting shaft (11) is rotatably provided on one side of the top of the flotation box (1) close to the collecting trough (2); scrapers (12) are provided on both sides of the mounting shaft (11); a second drive motor is provided on the top of the flotation box (1); a reducer (9) transmission-connected to the second drive motor is provided on the top of the flotation box (1); and the reducer (9) is transmission-connected to the mounting shaft (11).

10. A flotation method, characterized in that: A flotation machine according to any one of claims 1 to 9, which is used to recover mineral particles containing precious metals from mineral particles suspended in a slurry; The slurry is first introduced into the flotation box (1) from the input port (32), and then the first drive motor (3) is started to force the shaft (17) to rotate and stir the slurry; At the same time, the high-pressure gas is introduced into the gas delivery channel (27) connected to the pipeline member through the gas input pipe (19) and is discharged from the capillary pores (31) provided on the first fan blade (25); The high-pressure gas ascends in the pipeline, enters the output pipe (22) connected to the pipeline, is introduced into the bottom of the flotation box (1), and blows toward the second stirring mechanism; the two groups of gas collide to generate a counter-flow, and a flotation drum is generated in the slurry to float fine mineral particles; The high-pressure gas outputted from the output pipe (22) will blow the second stirring mechanism to make a rotational movement opposite to the second stirring mechanism to increase the slurry disturbance and generate flotation bubbles, so that the fine mineral particles and the flotation bubbles adhere to each other and float upward.

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