CN210545720U

CN210545720U - Bauxite non-transmission flotation device

Info

Publication number: CN210545720U
Application number: CN201920749435.4U
Authority: CN
Inventors: 姚光平; 武志斌; 张卫平; 王春林
Original assignee: Sanmenxia Asia Pacific Technology Co ltd
Current assignee: Wu Zhibin
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-05-19
Anticipated expiration: 2029-05-23

Abstract

The utility model discloses a bauxite non-transmission flotation device, wherein a flotation tank is arranged on the right side of a circulating tank, a foam overflow tank is fixed on the upper part of the outer side wall of the flotation tank, a mixed material distributing tank is fixed on the middle lower part in the flotation tank, a buffering scattering cone is fixed in the mixed material distributing tank, a plurality of release pipes are connected on the side wall of the mixed material distributing tank, and a plurality of nozzles are connected on the side wall of each release pipe; the circulating tank is connected with a raw bauxite slurry pipe, the circulating tank is connected with a second pipeline through a first pipeline, the inner side wall of the second pipeline is provided with a wear-resistant coating so that the inner diameters of the left end and the right end of the second pipeline are large and the inner diameter of the middle part of the second pipeline is small, the upper side wall and the lower side wall of the middle part of the second pipeline are respectively connected with a medicine suction hopper and an air suction pipe, the right end of the second pipeline is connected with a third pipeline, the middle part of the lower side wall of the third pipeline is connected with a mixed material distribution tank through a fourth pipeline, the flotation tank is respectively connected with the circulating tank and an underflow overflow box through a medium bauxite slurry pipe and. The utility model discloses it is effectual to mix the mineralization.

Description

Bauxite non-transmission flotation device

Technical Field

The utility model belongs to the technical field of the bauxite ore dressing, concretely relates to bauxite does not have transmission flotation device.

Background

At present, the production of bauxite concentrate by direct flotation of low-grade bauxite is currently changed from a flotation machine beneficiation technology to a micro-bubble mineralization self-circulation flotation tank technology with large processing capacity and high production efficiency, and as the micro-bubble mineralization self-circulation flotation tank technology is in an improvement stage at present, beneficiation equipment adopted by most beneficiation enterprises is easy to cause some problems in the actual production process: 1. the atomization effect is poor, the mixed mineralization degree is low, and the mineral separation effect is poor; 2. the mineralizer and the release device are easy to block, local equipment is seriously abraded and damaged, time and labor are wasted in maintenance, and the production efficiency is influenced; 3. the tailing index is high, the yield of concentrate is reduced, and the enterprise benefit is directly influenced; 4. the equipment investment is more, and the operation control is fussy. Therefore, the technical problem to be solved is to develop a high-efficiency transmission-free flotation column technology which has the advantages of good atomization and mineralization effect, long service life, less equipment investment, simple maintenance and replacement and high production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bauxite does not have transmission flotation device, and it is effectual to mix the mineralization, and then the flotation is effectual.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a bauxite non-transmission flotation device comprises a vertical circulating tank, wherein a vertical flotation tank with an opening at the top end is arranged on the right side of the circulating tank, a vertical foam overflow tank with an inner bottom wall inclined towards the lower right side is fixed on the upper portion of the outer side wall of the flotation tank, the height of the top wall of the foam overflow tank is higher than that of the top end of the side wall of the flotation tank, a foam overflow area is formed in an area formed by the inner side wall of the foam overflow tank and the upper portion of the outer side wall of the flotation tank, a vertical mixed material distribution tank is fixed on the middle lower portion inside the flotation tank, a buffer scattering cone with an upward cone tip is fixed inside the mixed material distribution tank, a plurality of horizontal release pipes with closed tail ends are connected to the side wall; the circulating tank is connected with a raw bauxite slurry pipe with a first slurry pump, the circulating tank is connected with a horizontal second pipeline through a first pipeline with a second slurry pump, the inner side wall of the second pipeline is provided with a wear-resistant coating so that the inner diameters of the left end and the right end of the second pipeline are large and the inner diameter of the middle part of the second pipeline is small, the left part, the middle part and the right part of the second pipeline are respectively an inlet pipeline section, a throat pipeline section and a diffusion pipeline section, the upper side wall and the lower side wall of the second pipeline at the left part of the throat pipeline section are respectively connected with a medicine suction hopper and an air suction pipe, the right end of the second pipeline is connected with a horizontal third pipeline with a closed end, the inner side wall of the third pipeline is coated with a wear-resistant spiral coating, the middle part of the lower side wall of the third pipeline is connected with the top wall of a mixing tank through a fourth pipeline with a vertical wear-resistant spiral coating coated on the inner side, the bottom wall right part of the foam overflow tank is connected with the foam collecting tank through a foam overflow pipe.

Further, the upper part of the circulation tank is in a cylindrical shape, the lower part of the circulation tank is in an inverted conical shape, the circulation tank is formed by rolling a steel plate with the thickness of 6-10mm, the inner diameter of the cylinder at the upper part of the circulation tank is 2500-3000mm, the upper part of the flotation tank is in a cylindrical shape, the lower part of the flotation tank is in an inverted conical shape, the flotation tank is formed by rolling a steel plate with the thickness of 6-10mm, the inner diameter of the cylinder at the upper part of the flotation tank is 3000-4500mm, the upper part of the foam overflow tank is in a cylindrical shape, the inner diameter of the inner side wall of the foam overflow tank from top to bottom is uniform, the vertical center line of the foam overflow tank is coincident with the vertical center line of the flotation tank, the foam overflow tank is formed.

Furthermore, the mixing and distributing tank is rectangular, the orthographic projection of the mixing and distributing tank is square, the mixing and distributing tank is formed by welding steel plates with the thickness of 6-10mm, the length of the inner bottom wall of the mixing and distributing tank is 800-1200mm, the bottom end of the side wall of the mixing and distributing tank is connected with the inner side wall of the flotation tank through a plurality of horizontal supporting rods, the bottom surface of a buffering scattering cone is connected with the inner bottom wall of the mixing and distributing tank through a plurality of vertical fixing rods, four inclined side surfaces of the buffering scattering cone are isosceles triangles, the orthographic projection of the buffering scattering cone is square, the vertical central line of the buffering scattering cone coincides with the vertical central line of the mixing and distributing tank, the buffering scattering cone is formed by rolling steel plates with the thickness of 5-10mm, the taper of the buffering scattering cone is 30-50 degrees, the height of the buffering scattering cone is 3/4-4/5 of the height of the mixing and distributing tank, and the bottom surface length of the buffering .

Furthermore, a fourth pipeline is connected with the middle part of the top wall of the mixing and distributing tank, and a circle of material blocking platforms which are downwards inclined from the center to the edge direction are fixed on the top wall in the mixing and distributing tank by taking the vertical central line of the fourth pipeline as the center.

Furthermore, the structure and the size of the plurality of release pipes are the same, the plurality of release pipes are uniformly distributed at corresponding positions on the lower portion of the side wall of the mixing and distributing tank, a plurality of release holes are formed in the side wall of each release pipe, nozzles are correspondingly installed at the positions, corresponding to the release holes, of the release pipes, the structure and the size of the plurality of nozzles on each release pipe are the same, the plurality of nozzles on each release pipe are uniformly distributed on the side wall of the corresponding release pipe, the tail end of each release pipe plugs the tail end opening of the corresponding release pipe through a first plugging plate, each release pipe is a circular steel pipe with the thickness of 6-8mm and the inner diameter of 250mm, the central aperture of each release hole is 20-25mm, the length of each release nozzle is 30-40mm, and the central aperture of each release nozzle is 15-.

Further, the end of the third pipeline is plugged with the corresponding end opening of the third pipeline through a second plugging plate.

Furthermore, the medium slurry pipe, the underflow overflow pipe and the foam overflow pipe are all round steel pipes with the thickness of 6-8mm and the inner diameter of 250mm, and the underflow overflow box is a cuboid box body formed by welding steel plates with the thickness of 6-8 mm.

Further, the height of the inlet end of the medium slurry pipe is higher than that of the outlet end, the height of the inlet end of the underflow overflow pipe is higher than that of the outlet end, and the height of the inlet end of the foam overflow pipe is higher than that of the outlet end.

Compared with the prior art, the beneficial effects of the utility model are that:

in the utility model, the raw bauxite slurry flowing at high speed enters the throat section from the inlet pipe section and forms negative pressure in the throat section, due to the negative pressure action, the medicament is sucked into the throat section through the medicament suction funnel and the air is sucked into the throat section through the air suction pipe, the medicament in the throat section, the air and the raw bauxite slurry are violently collided, mixed, adsorbed and mineralized to form a solid, liquid and gas three-phase mixture, the solid, liquid and gas three-phase mixture enters the diffusion pipe section from the throat section and enters the third pipeline in a high turbulence state of diffusion injection in the diffusion pipe section, so the raw bauxite slurry realizes the first mixed mineralization in the second pipeline, the solid, liquid and gas three-phase mixture in the third pipeline is obstructed by the wear-resistant spiral coating coated on the inner side wall of the third pipeline, and the solid, liquid and gas three-phase mixture in the third pipeline flows in a spiral state, the solid, liquid and gas three-phase mixture is prevented by the wear-resistant spiral coating coated on the inner side wall of the third pipeline, so that the solid, liquid and gas three-phase mixture is mixed and mineralized for the second time, when the solid, liquid and gas three-phase mixture in the third pipeline moves to the tail end of the third pipeline, the solid, liquid and gas three-phase mixture returns to form an eddy current state and enters the fourth pipeline, the solid, liquid and gas three-phase mixture is prevented by the second blocking plate, so that the solid, liquid and gas three-phase mixture realizes the third mixing and mineralization, the solid, liquid and gas three-phase mixture in the fourth pipeline is prevented by the wear-resistant spiral coating coated on the inner side wall of the fourth pipeline, so that the solid, liquid and gas three-phase mixture in the fourth pipeline flows in the fourth pipeline in a spiral state and enters the mixing and distributing tank, and the solid, liquid and gas three-phase mixture is prevented by the wear-resistant spiral coating coated on the inner side wall of the fourth pipeline, the solid, liquid and gas three-phase mixture is subjected to the blocking action of the blocking table when floating to the blocking table, then returns to and forms a vortex state again and enters each release pipe, and the solid, liquid and gas three-phase mixture is subjected to the blocking action of the blocking table, so that the solid, liquid and gas three-phase mixture is subjected to fifth mixing mineralization, and therefore the mixing mineralization effect of the original bauxite slurry is good, and the flotation effect is good;

in the utility model, the middling pulp in the flotation tank naturally flows into the circulating tank through the middling pulp pipe to be circularly floated for a plurality of times, so that the flotation effect is good;

the utility model discloses in, the second pipeline inside wall is equipped with wear-resistant coating, the inside wall of third pipeline and fourth pipeline all scribbles wear-resistant spiral coating, the coating can be to solid like this, liquid, gas three-phase mixture plays the scour protection, the cushioning effect, high energy has effectively been alleviateed, high turbulent state is solid, liquid, the gas three-phase mixture is to the washing away of pipeline, the degree of wear, and the operation is smooth and easy, pipeline blocking phenomenon does not basically take place, it breaks up the awl to mix to be fixed with the buffering that the awl point faces upwards to divide material jar, it is fixed with the round by the fender material platform of edge direction downward sloping to use the vertical central line of fourth pipeline to mix in the material jar, the buffering breaks up the awl and keeps off the material platform and also can alleviate solid, liquid, gas three-phase mixture is to mixing the washing away of material jar, the degree of wear, compare with prior art equipment.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the connection between the third pipeline and the fourth pipeline in FIG. 1;

fig. 3 is a schematic top view of the mixing and distributing tank, the buffering scattering cone, the fourth pipeline, the dilution pipe and the nozzle in fig. 1.

Description of the drawings: 1. the device comprises a circulating tank, 2, a flotation tank, 3, a foam overflow tank, 4, a mixing and distributing tank, 5, a buffering and breaking cone, 6, a release pipe, 7, a nozzle, 8, a first slurry pump, 9, a raw bauxite slurry pipe, 10, a second slurry pump, 11, a first pipeline, 12, a second pipeline, 13, an inlet pipe section, 14, a throat section, 15, a diffusion pipe section, 16, a medicine suction hopper, 17, a gas suction pipe, 18, a third pipeline, 19, a fourth pipeline, 20, an abrasion-resistant spiral coating, 21, an abrasion-resistant coating, 22, a middling slurry pipe, 23, an underflow overflow pipe, 24, an underflow overflow box, 25, a foam overflow pipe, 26, a foam collection tank, 27, a supporting rod, 28, a fixing rod, 29, a material blocking platform, 30, a first blocking plate, 31, a second blocking plate, 32, a first electric valve, 33 and a second electric valve.

Detailed Description

As shown in fig. 1, 2 and 3, a bauxite non-transmission flotation device comprises a vertical circulation tank 1, a vertical flotation tank 2 with an opening at the top end is arranged on the right side of the circulation tank 1, a vertical froth overflow tank 3 with an inner bottom wall inclined towards the lower right side is fixed on the upper portion of the outer side wall of the flotation tank 2, the height of the top wall in the froth overflow tank 3 is higher than that of the top end of the side wall of the flotation tank 2, a froth overflow area is formed by the area enclosed by the inner side wall of the froth overflow tank 3 and the upper portion of the outer side wall of the flotation tank 2, a vertical mixing material-separating tank 4 is fixed on the middle lower portion in the flotation tank 2, a buffering scattering cone 5 with an upward cone tip is fixed in the mixing material-separating tank 4, a plurality of horizontal release pipes 6 with closed tail ends are connected to the side wall; the circulation tank 1 is connected with a raw bauxite slurry pipe 9 with a first slurry pump 8, the circulation tank 1 is connected with a horizontal second pipeline 12 through a first pipeline 11 with a second slurry pump 10, the first pipeline 11 is provided with a first electric valve 32, the inner side wall of the second pipeline 12 is provided with a wear-resistant coating 21 so that the inner diameters of the left end and the right end of the second pipeline 12 are large and the inner diameter of the middle part of the second pipeline is small, the left part, the middle part and the right part of the second pipeline 12 are respectively an inlet pipeline section 13, a throat section 14 and a diffusion pipeline section 15, the upper side wall and the lower side wall of the second pipeline 12 at the left part of the throat section 14 are respectively connected with a medicine suction hopper 16 and an air suction pipe 17, the right end of the second pipeline 12 is connected with a horizontal third pipeline 18 with a closed end, the tail end of the third pipeline 18 is blocked by a second blocking plate 31, the tail end of the corresponding third pipeline 18 is blocked, the inner side wall 18 of the third pipeline is coated with a wear-resistant spiral coating 20, the middle part of the lower side, a circle of material blocking platforms 29 which are downwards inclined from the center to the edge direction are fixed on the inner top wall of the mixing material distributing tank 4 by taking the vertical central line of a fourth pipeline 19 as the center, the lower part of the side wall of the flotation tank 2 is connected with the lower part of the circulating tank 1 through a middling slurry pipe 22, a second electric valve 33 is arranged on the middling slurry pipe 22, the lower part of the side wall of the flotation tank 2 is connected with an underflow overflow box 24 through an underflow overflow pipe 23, the right part of the bottom wall of the foam overflow tank 3 is connected with a foam collecting tank 26 through a foam overflow pipe 25, the height of the inlet end of the middling slurry pipe 22 is higher than that of the outlet end, the height of the inlet end of the underflow.

Wherein, the upper part of the circulating tank 1 is in a cylinder shape, the lower part of the circulating tank 1 is in an inverted cone shape, the circulating tank 1 is formed by rolling a steel plate with the thickness of 6-10mm, the inner diameter of the cylinder at the upper part of the circulating tank 1 is 2500-3000mm, the upper part of the flotation tank 2 is in a cylinder shape, the lower part of the flotation tank 2 is in an inverted cone shape, the flotation tank 2 is formed by rolling a steel plate with the thickness of 6-10mm, the inner diameter of the cylinder at the upper part of the flotation tank 2 is 3000-4500mm, the upper part of the foam overflow tank 3 is in a cylinder shape, the inner diameter of the inner side wall of the foam overflow tank 3 is uniform from top to bottom, the vertical central line of the foam overflow tank 3 is coincided with the vertical central line of the flotation tank 2, the foam overflow tank 3; the mixing and distributing tank 4 is cuboid, the orthographic projection of the mixing and distributing tank 4 is square, the mixing and distributing tank 4 is formed by welding steel plates with the thickness of 6-10mm, the length of the bottom wall in the mixing and distributing tank 4 is 800-1200mm, the bottom end of the side wall of the mixing and distributing tank 4 is connected with the inner side wall of the flotation tank 2 through a plurality of horizontal supporting rods 27, the bottom surface of a buffering scattering cone 5 is connected with the inner bottom wall of the mixing and distributing tank 4 through a plurality of vertical fixing rods 28, four inclined side surfaces of the buffering scattering cone 5 are all isosceles triangles, the orthographic projection of the buffering scattering cone 5 is square, the vertical central line of the buffering scattering cone 5 is coincided with the vertical central line of the mixing and distributing tank 4, the buffering scattering cone 5 is rolled by a steel plate with the thickness of 5-10mm, the taper of the buffering scattering cone 5 is 30-50 degrees, the height of the buffering scattering cone 5 is 3/, the length of the bottom surface of the buffering and scattering cone 5 is 2/3-4/5 of the length of the bottom wall of the mixing and distributing tank 4.

The structure and the size of the plurality of release pipes 6 are the same, the plurality of release pipes 6 are uniformly distributed at corresponding positions of the lower portion of the side wall of the mixing material distributing tank 4, a plurality of release holes are formed in the side wall of each release pipe 6, nozzles 7 are correspondingly installed at the release holes of the release pipes 6, the structure and the size of the plurality of nozzles 7 on each release pipe 6 are the same, the plurality of nozzles 7 on each release pipe 6 are uniformly distributed on the side wall of the corresponding release pipe 6, the tail end of each release pipe 6 is sealed and blocked by a first sealing plate 30, the tail end of each release pipe 6 is provided with an opening, each release pipe 6 is a circular steel pipe with the thickness of 6-8mm and the inner diameter of 250mm, the central aperture of each release hole is 20-25mm, the length of each release nozzle 7 is 30-40mm, and the central aperture of each release nozzle 7 is 15-18 mm.

Wherein, the middle slurry pipe 22, the underflow overflow pipe 23 and the foam overflow pipe 25 are all round steel pipes with the thickness of 6-8mm and the inner diameter of 250mm, and the underflow overflow box 24 is a cuboid box body formed by welding steel plates with the thickness of 6-8 mm.

The working process is as follows: raw bauxite slurry enters a circulation tank 1 through a raw bauxite slurry pipe 9 under the action of a first slurry pump 8, the raw bauxite slurry in the circulation tank 1 enters an inlet pipe section 13 of a second pipeline 12 through a first pipeline 11 under the action of a second slurry pump 10, the raw bauxite slurry flowing at a high speed enters a throat pipe section 14 from the inlet pipe section 13 and forms negative pressure in the throat pipe section 14, due to the negative pressure, the medicament is sucked into the throat pipe section 14 through a medicament suction hopper 16, air is sucked into the throat pipe section 14 through an air suction pipe 17, the medicament and the air in the throat pipe section 14 are violently collided, mixed, adsorbed and mineralized with the raw bauxite slurry to form a solid-liquid-gas three-phase mixture, and the solid-liquid-gas three-phase mixture enters a diffusion pipe section 15 from the diffusion pipe section 14 and enters a third pipeline 18 in a diffusion jet high-turbulence state in the diffusion pipe section 15, and the solid-liquid-gas in the third pipeline 18, The liquid-gas three-phase mixture is hindered by the wear-resistant spiral coating 20 coated on the inner side wall of the third pipeline 18, so that the solid-liquid-gas three-phase mixture in the third pipeline 18 flows in a spiral state in the third pipeline 18, when the solid-liquid-gas three-phase mixture in the third pipeline 18 moves to the tail end of the third pipeline 18, the solid-liquid-gas three-phase mixture returns to form a vortex state and enters the fourth pipeline 19, the solid-liquid-gas three-phase mixture in the fourth pipeline 19 is hindered by the wear-resistant spiral coating 20 coated on the inner side wall of the fourth pipeline 19, so that the solid-liquid-gas three-phase mixture in the fourth pipeline 19 flows in a spiral state in the fourth pipeline 19 and enters the mixing tank branch 4, the solid-liquid-gas three-phase mixture falls onto the buffering scattering cone 5 to be buffered and scattered by the buffering scattering cone 5, and the solid, liquid and gas three-phase mixture in the mixing and distributing tank 4 is blocked by the blocking platform 29 when floating to the blocking platform 29, and then the solid, liquid and gas three-phase mixture returns and forms a vortex state again and enters each releasing pipe 6, the solid, liquid and gas three-phase mixture is sprayed into the flotation tank 2 through a plurality of nozzles 7 on each releasing pipe 6, the solid, liquid and gas three-phase mixture forms a large amount of foam with good dispersion performance in the flotation tank 2 and floats upwards rapidly, the foam enters a foam overflow area, the middling pulp in the flotation tank 2 naturally flows into the circulation tank 1 through a middling pulp pipe 22 to be subjected to multiple circulating flotation, the underflow in the flotation tank 2 enters an underflow overflow box 24 through an underflow overflow pipe 23, the foam in the foam overflow area of the foam overflow tank 3 enters a foam collection tank 26 through a foam overflow pipe 25, wherein the mineral particle size in the middling pulp is larger than that in the underflow, the foam in the foam collecting tank 26 is settled, concentrated and filter-pressed to obtain concentrate, and the underflow in the underflow overflow box 24 is settled, concentrated and filter-pressed to obtain tailings.

Claims

1. A bauxite non-transmission flotation device is characterized in that: the flotation device comprises a vertical circulating tank, wherein a vertical flotation tank with an opening at the top end is arranged on the right side of the circulating tank, a vertical foam overflow tank with an inner bottom wall inclined to the lower right is fixed on the upper part of the outer side wall of the flotation tank, the top wall of the inner top wall of the foam overflow tank is higher than the top end of the side wall of the flotation tank, a foam overflow area is formed in an area enclosed by the inner side wall of the foam overflow tank and the upper part of the outer side wall of the flotation tank, a vertical mixed material distributing tank is fixed on the middle lower part of the flotation tank, a buffer scattering cone with an upward cone tip is fixed in the mixed material distributing tank, a plurality of horizontal release pipes with closed tail ends are connected; the circulating tank is connected with a raw bauxite slurry pipe with a first slurry pump, the circulating tank is connected with a horizontal second pipeline through a first pipeline with a second slurry pump, the inner side wall of the second pipeline is provided with a wear-resistant coating so that the inner diameters of the left end and the right end of the second pipeline are large and the inner diameter of the middle part of the second pipeline is small, the left part, the middle part and the right part of the second pipeline are respectively an inlet pipeline section, a throat pipeline section and a diffusion pipeline section, the upper side wall and the lower side wall of the second pipeline at the left part of the throat pipeline section are respectively connected with a medicine suction hopper and an air suction pipe, the right end of the second pipeline is connected with a horizontal third pipeline with a closed end, the inner side wall of the third pipeline is coated with a wear-resistant spiral coating, the middle part of the lower side wall of the third pipeline is connected with the top wall of a mixing tank through a fourth pipeline with a vertical wear-resistant spiral coating coated on the inner side, the bottom wall right part of the foam overflow tank is connected with the foam collecting tank through a foam overflow pipe.

2. The bauxite gearless flotation device of claim 1, wherein: the upper part of the circulation tank is in a cylindrical shape, the lower part of the circulation tank is in an inverted conical shape, the circulation tank is formed by rolling a steel plate with the thickness of 6-10mm, the inner diameter of a cylinder at the upper part of the circulation tank is 2500-3000mm, the upper part of the flotation tank is in a cylindrical shape, the lower part of the flotation tank is in an inverted conical shape, the flotation tank is formed by rolling a steel plate with the thickness of 6-10mm, the inner diameter of a cylinder at the upper part of the flotation tank is 3000-4500mm, the upper part of the foam overflow tank is in a cylindrical shape, the inner diameter of the inner side wall of the foam overflow tank is uniform from top to bottom, the vertical center line of the foam overflow tank coincides with the vertical center line of the flotation tank, the foam overflow tank is.

3. The bauxite gearless flotation device of claim 1, wherein: the mixing and distributing tank is cuboid, the orthographic projection of the mixing and distributing tank is square, the mixing and distributing tank is formed by welding steel plates with the thickness of 6-10mm, the length of the inner bottom wall of the mixing and distributing tank is 800-1200mm, the bottom end of the side wall of the mixing and distributing tank is connected with the inner side wall of the flotation tank through a plurality of horizontal supporting rods, the bottom surface of a buffering scattering cone is connected with the inner bottom wall of the mixing and distributing tank through a plurality of vertical fixing rods, four inclined side surfaces of the buffering scattering cone are isosceles triangles, the orthographic projection of the buffering scattering cone is square, the vertical central line of the buffering scattering cone coincides with the vertical central line of the mixing and distributing tank, the buffering scattering cone is formed by rolling steel plates with the thickness of 5-10mm, the taper of the buffering scattering cone is 30-50 degrees, the height of the buffering scattering cone is 3/4-4/5 of the height of the mixing and distributing tank, and the bottom surface length of the.

4. The bauxite gearless flotation device of claim 3, wherein: the fourth pipeline is connected with the middle part of the top wall of the mixing and distributing tank, and a circle of material blocking platforms which are downwards inclined from the center to the edge direction are fixed on the top wall in the mixing and distributing tank by taking the vertical central line of the fourth pipeline as the center.

5. The bauxite gearless flotation device of claim 1, wherein: the structure and the size of the plurality of release pipes are the same, the plurality of release pipes are uniformly distributed at corresponding positions on the lower portion of the side wall of the mixing material distributing tank, a plurality of release holes are formed in the side wall of each release pipe, nozzles are correspondingly installed at the positions, where the release holes are formed, of the release pipes, the structure and the size of the plurality of nozzles on each release pipe are the same, the plurality of nozzles on each release pipe are uniformly distributed on the side wall of the corresponding release pipe, the tail end of each release pipe is plugged with an opening at the tail end of the corresponding release pipe through a first plugging plate, each release pipe is a circular steel pipe with the thickness of 6-8mm and the inner diameter of 250mm, the central aperture of each release hole is 20-25mm, the length of each release nozzle is 30-40mm, and the central aperture.

6. The bauxite gearless flotation device of claim 1, wherein: and the tail end of the third pipeline is plugged with the corresponding tail end opening of the third pipeline through a second plugging plate.

7. The bauxite gearless flotation device of claim 1, wherein: the middle slurry pipe, the underflow overflow pipe and the foam overflow pipe are all round steel pipes with the thickness of 6-8mm and the inner diameter of 250mm, and the underflow overflow box is a cuboid box body formed by welding steel plates with the thickness of 6-8 mm.

8. The bauxite gearless flotation device of claim 1, wherein: the height of the inlet end of the medium slurry pipe is higher than that of the outlet end, the height of the inlet end of the underflow overflow pipe is higher than that of the outlet end, and the height of the inlet end of the foam overflow pipe is higher than that of the outlet end.