Multistage mineral flotation device

Abstract

The invention relates to the technical field of mineral flotation, in particular to a multi-stage mineral flotation device which comprises a plurality of flotation devices connected in sequence, each flotation device comprises a flotation tank, a mixing mechanism is arranged in the middle of each flotation tank, and an auxiliary assembly is arranged in each flotation tank. The flotation device has the beneficial effects that when the flotation device is used, the second driving piece is started to rotate forwards, in the first state, the part, close to the inner wall of the flotation tank, of ore pulp in the flotation tank ascends, and the part, close to the connecting pipe, of the ore pulp descends, circulation is formed, and flotation is conducted on mineral particles in the ore pulp; the second driving piece is started to rotate reversely, ore pulp pushed outwards by the mineralization disc and gangue particles and mineral particles pushed inwards by the shifting plate flow relatively and impact, the gangue particles accumulated at the bottom of the flotation tank are loosened and make contact with bubbles again, flotation is conducted on the mineral particles doped in the gangue particles again, and the flotation effect is improved. Therefore, the flotation effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mineral flotation, and in particular to a multi-stage mineral flotation device. Background Art

[0002] The process of separating useful minerals from useless minerals (usually called gangue) or harmful minerals in mineral raw materials by physical or chemical methods, or separating multiple useful minerals is called ore dressing. Ore dressing is an important link in the entire mineral product production.

[0003] Flotation technology is one of the commonly used technologies in the mineral processing process. Flotation technology is based on the difference in the surface properties of mineral particles and gangue particles. After the surface of the mineral particles is hydrophobic, the buoyancy of the bubbles is used to float the mineral particles. There are few natural hydrophobic minerals. Therefore, collectors are often added to the pulp during flotation to enhance the hydrophobicity of the minerals to be floated out; various adjusters are added to improve selectivity; frothers are added and aerated to produce bubbles. The most basic behavior in the flotation process is the mineralization of the flotation bubbles, that is, the attachment of minerals, drugs and bubbles. The hydrophobic mineral particles are attached to the bubbles and float up and separate. Thus, the separation of gangue and minerals is achieved.

[0004] The experimental multi-stage mineral flotation device and its application method disclosed in Chinese patent CN108636618A include a plurality of mineral flotation devices connected in sequence, wherein the mineral flotation device includes a base, in which a flotation motor is installed, and the rotating shaft of the flotation motor extends from the table of the base; a flotation tank is detachably installed on the base, and an impeller is rotatably installed at the bottom of the flotation tank, and the rotating shaft of the flotation motor is detachably connected to the rotating shaft of the impeller; a guide groove is arranged around the outer side of the top of the flotation tank, and the guide groove is used to collect the concentrate overflowing from the top of the flotation tank, and a concentrate discharge port is arranged at the bottom of the guide groove, and the concentrate discharge port of the previous stage mineral flotation device is connected to the flotation tank of the next stage mineral flotation device through a concentrate conveying pipe; and a vent pipe extends to the bottom of the flotation tank and is used to introduce air flow into the flotation tank.

[0005] However, compared with the prior art and the comparative scheme, it can be seen that the multi-stage mineral flotation device still has the following problems in actual use: In the process of mineral flotation, air is introduced through the vent pipe, and then the impeller at the bottom of the flotation tank rotates to shear the filled air to form bubbles. At the same time, the rotation of the impeller drives the pulp to flow to mix the pulp, bubbles and reagents. The volume of the bubbles is larger than the mineral particles in the pulp. When flowing in the pulp, the resistance they encounter is relatively large, and the buoyancy is large. They will float upward during the flow. The volume of the mineral particles in the pulp is relatively small. When flowing in the pulp, the resistance they encounter is smaller than that of the bubbles, and the buoyancy is smaller. If they are not mixed with the bubbles during the flow, they will fall to the bottom of the flotation tank together with the gangue particles. With the increase of use time, there are more and more gangue particles at the bottom of the flotation tank, and the mixed mineral particles are more difficult to mix with the bubbles for flotation. The mixing effect of the bubbles and the mineral particles in the pulp is not good, resulting in poor flotation effect. Summary of the invention

[0006] The present invention provides a multi-stage mineral flotation device to solve the above technical problems.

[0007] A multi-stage mineral flotation device of the present invention adopts the following technical solution: it comprises a plurality of flotation devices connected in sequence, the flotation device comprises a flotation cell, a mixing mechanism is arranged in the middle of the flotation cell, an auxiliary component is arranged inside the flotation cell, the position of the auxiliary component corresponds to the position of the mixing mechanism, a dosing mechanism is arranged inside the flotation cell, and a bubble scraping mechanism is arranged on the flotation cell; An annular grid is arranged inside the flotation tank, a connecting groove is opened at the bottom of the flotation tank, and a first gear is arranged inside the connecting groove; The mixing mechanism comprises a first driving member, an output end of which is provided with a first transmission belt, the first driving member is connected to a bubble mineralization component through the first transmission belt, and a connecting pipe is provided on the bubble mineralization component; The bubble mineralization assembly includes a first connecting shaft, a first transmission wheel is arranged at one end of the first connecting shaft, the first transmission wheel is connected to the first driving member through a first transmission belt, a spiral plate is arranged on the first connecting shaft, a mineralization disk is arranged at one end of the first connecting shaft away from the first transmission wheel, and a second gear is arranged on the side of the mineralization disk away from the spiral plate; The auxiliary component comprises a gear ring, a rotating ring is arranged on the gear ring, and a material stripping plate is arranged on the rotating ring.

[0008] Furthermore, a connecting frame is arranged on the top of the flotation tank, a first discharge pipe is arranged on the bottom of one side of the flotation tank, a collecting tank is arranged on the flotation tank, and a second discharge pipe is arranged on the bottom of the collecting tank.

[0009] Furthermore, an air inlet pipe is arranged on the connecting pipe, a connecting cover is arranged at one end of the connecting pipe, the spiral plate is arranged inside the connecting cover, and a feed pipe is arranged on the connecting cover.

[0010] Furthermore, the dosing mechanism includes a dosing pipe, a valve is arranged on the dosing pipe, a distribution pipe is arranged at one end of the dosing pipe, and a nozzle is arranged on the distribution pipe.

[0011] Furthermore, the bubble scraping mechanism includes a second driving member, which is fixedly mounted on the flotation tank, a second transmission belt is provided at the output end of the second driving member, the second driving member is connected to the second transmission wheel through the second transmission belt, a second connecting shaft is provided in the middle of the second transmission wheel, a first bubble scraping rack is provided on the second connecting shaft, a third transmission wheel is provided at the end of the second connecting shaft away from the second transmission wheel, a third transmission belt is provided on the third transmission wheel, the third transmission wheel is connected to the fourth transmission wheel through the third transmission belt, the fourth transmission wheel is connected to the transmission shaft, the transmission shaft is rotatably connected to one side of the flotation tank, the transmission shaft is connected to the fifth transmission wheel, the fifth transmission wheel is provided with a third connecting shaft, the second connecting shaft, the fourth transmission wheel and the third connecting shaft are all rotatably connected to the flotation tank, and a second bubble scraping rack is provided on the third connecting shaft.

[0012] Furthermore, the connecting pipe is fixedly mounted on the connecting frame.

[0013] Furthermore, the second gear meshes with the first gear.

[0014] Furthermore, the gear ring is transmission connected to the second gear through the first gear.

[0015] Furthermore, the dosing pipe is fixedly connected to the connecting frame through a clamp.

[0016] Furthermore, there are multiple material-diverting plates distributed in a circular array on the rotating ring, and the shape of the material-diverting plates is arc-shaped.

[0017] The beneficial effect of the present invention is that when in use, the second driving member is started to rotate forward, and the slurry in the flotation tank in the first state close to the inner wall of the flotation tank rises, and the slurry close to the connecting pipe falls, forming a cycle, and the mineral particles in the slurry are floated. As the use time increases, when the number of gangue particles at the bottom of the flotation tank increases, the second driving member is started to reverse, and the slurry pushed outward by the mineralization disk and the gangue particles pushed inward by the material stripping plate and the mineral particles flow and impact relative to each other, so that the gangue particles accumulated at the bottom of the flotation tank are loosened and contacted with the bubbles again, and the mineral particles doped in the gangue particles are floated again, thereby improving the flotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of a first viewing angle of an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a second viewing angle of an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a flotation device according to an embodiment of the present invention from a first viewing angle; Figure 4 It is a structural schematic diagram of a flotation device according to an embodiment of the present invention from a second viewing angle; Figure 5 It is a cross-sectional structural schematic diagram of a flotation device according to an embodiment of the present invention; Figure 6 It is a schematic diagram of the slurry flow trajectory at the auxiliary component in the first state of an embodiment of the present invention; Figure 7 It is a schematic diagram of the flow trajectory of the slurry in the flotation cell in the first state of an embodiment of the present invention; Figure 8 It is a schematic diagram of the slurry flow trajectory at the auxiliary component in the second state of an embodiment of the present invention; Fig. 9 It is a schematic diagram of the flow trajectory of the slurry in the flotation cell in the second state of an embodiment of the present invention; Fig.10 It is a structural schematic diagram of a flotation cell according to an embodiment of the present invention; Fig.11 It is a cross-sectional structural schematic diagram of a flotation cell according to an embodiment of the present invention; Fig.12 It is a structural schematic diagram of a mixing mechanism of an embodiment of the present invention; Fig.13 is a schematic cross-sectional structural diagram of a mixing mechanism according to an embodiment of the present invention; Fig.14 This is a schematic structural diagram of a bubble mineralization assembly according to an embodiment of the present invention; Fig.15 This is a schematic structural diagram of a connecting pipe according to an embodiment of the present invention; Fig.16 It is a schematic diagram of the structure of the auxiliary components of an embodiment of the present invention; Fig.17 It is a structural schematic diagram of a dosing mechanism according to an embodiment of the present invention; Fig.18It is a schematic structural diagram of the bubble scraping mechanism according to an embodiment of the present invention.

[0020] In the figure: 1, flotation tank; 101, connecting frame; 102, first discharge pipe; 103, collecting tank; 104, second discharge pipe; 105, annular grid; 106, connecting tank; 107, first gear; 2, mixing mechanism; 21, first driving member; 22, first transmission belt; 23, bubble mineralization assembly; 231, first connecting shaft; 232, first transmission wheel; 233, spiral plate; 234, mineralization disk; 235, second gear; 24, connecting pipe; 241, air inlet pipe; 242, connecting cover; 243, feed pipe; 3, auxiliary Components; 301, gear ring; 302, swivel; 303, material stripper plate; 4, dosing mechanism; 401, dosing pipe; 402, valve; 403, distribution pipe; 404, nozzle; 5, bubble scraping mechanism; 501, second driving member; 502, second transmission belt; 503, second transmission wheel; 504, second connecting shaft; 505, first bubble scraping rack; 506, third transmission wheel; 507, third transmission belt; 508, fourth transmission wheel; 509, transmission shaft; 510, fifth transmission wheel; 511, third connecting shaft; 512, second bubble scraping rack. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0022] An embodiment of a multi-stage mineral flotation device of the present invention is as follows Figure 1 to Figure 2 As shown, it includes a plurality of flotation devices connected in sequence, such as Figures 3 to 9 As shown, the flotation device comprises a flotation cell 1, a mixing mechanism 2 is arranged in the middle of the flotation cell 1, an auxiliary component 3 is arranged inside the flotation cell 1, the position of the auxiliary component 3 corresponds to the position of the mixing mechanism 2, a dosing mechanism 4 is arranged inside the flotation cell 1, and a bubble scraping mechanism 5 is arranged on the flotation cell 1; like Figure 10 to Figure 11 As shown, a connecting frame 101 is provided on the top of the flotation cell 1, a first discharge pipe 102 is provided at the bottom of one side of the flotation cell 1, a collecting tank 103 is provided on the flotation cell 1, a second discharge pipe 104 is provided at the bottom of the collecting tank 103, an annular grid 105 is provided inside the flotation cell 1, a connecting slot 106 is provided at the bottom of the flotation cell 1, and a first gear 107 is provided inside the connecting slot 106; like Figure 12 to Figure 13As shown, the mixing mechanism 2 includes a first driving member 21, a first transmission belt 22, a bubble mineralization component 23 and a connecting pipe 24. The output end of the first driving member 21 is provided with the first transmission belt 22. The first driving member 21 is connected to the bubble mineralization component 23 through the first transmission belt 22. The bubble mineralization component 23 is provided with a connecting pipe 24, and the connecting pipe 24 is fixedly mounted on the connecting frame 101 by bolts. like Figure 3 , Figure 5 , Figure 7 , Fig. 9 , Fig.12 and Fig.14 As shown, the bubble mineralization assembly 23 includes a first connecting shaft 231, a first transmission wheel 232, a spiral plate 233, a mineralization disk 234 and a second gear 235. The first connecting shaft 231 is provided with a first transmission wheel 232 at one end, and the first transmission wheel 232 is transmission-connected to the first driving member 21 through a first transmission belt 22. The first connecting shaft 231 is provided with a spiral plate 233. The mineralization disk 234 is provided at one end of the first connecting shaft 231 away from the first transmission wheel 232. The second gear 235 is provided on the side of the mineralization disk 234 away from the spiral plate 233. The second gear 235 is meshed with the first gear 107. like Figures 13 to 15 As shown, an air inlet pipe 241 is provided on the connecting pipe 24, a connecting cover 242 is provided at one end of the connecting pipe 24, a spiral plate 233 is provided inside the connecting cover 242, and a feed pipe 243 is provided on the connecting cover 242; like Figure 5 , Figure 7 , Fig. 9 , Fig.11 and Fig.16 As shown, the auxiliary component 3 includes a gear ring 301, a rotating ring 302 and a material-diverting plate 303. The gear ring 301 is transmission-connected to the second gear 235 via the first gear 107. The gear ring 301 is provided with a rotating ring 302. The rotating ring 302 is provided with a material-diverting plate 303. There are multiple material-diverting plates 303, which are distributed in a circular array on the rotating ring 302. The shape of the material-diverting plate 303 is an arc. like Figure 3 , Fig.10 and Fig.17 As shown, the dosing mechanism 4 includes a dosing pipe 401, a valve 402, a distribution pipe 403 and a nozzle 404. The dosing pipe 401 is fixedly connected to the connecting frame 101 through a clamp, the dosing pipe 401 is provided with a valve 402, one end of the dosing pipe 401 is provided with a distribution pipe 403, and the distribution pipe 403 is provided with a nozzle 404; like Figure 3 , Figure 4 , Fig.10 and Fig.18As shown, the bubble scraping mechanism 5 includes a second driving member 501, a second transmission belt 502, a second transmission wheel 503, a second connecting shaft 504, a first bubble scraping frame 505, a third transmission wheel 506, a third transmission belt 507, a fourth transmission wheel 508, a transmission shaft 509, a fifth transmission wheel 510, a third connecting shaft 511 and a second bubble scraping frame 512. The second driving member 501 is fixedly mounted on the flotation tank 1, and the output end of the second driving member 501 is provided with a second transmission belt 502. The second driving member 501 is connected to the second transmission wheel 503 through the second transmission belt 502. The middle part of the second transmission wheel 503 is provided with a second connecting shaft 504, and the second connecting shaft 504 is provided with a first bubble scraping frame. The third transmission wheel 506 is provided at one end of the second connecting shaft 504 away from the second transmission wheel 503, and the third transmission wheel 506 is provided with a third transmission belt 507. The third transmission wheel 506 is transmission-connected to the fourth transmission wheel 508 through the third transmission belt 507. The fourth transmission wheel 508 is transmission-connected to the transmission shaft 509. The transmission shaft 509 is rotationally connected to one side of the flotation tank 1. The transmission shaft 509 is transmission-connected to the fifth transmission wheel 510, and the fifth transmission wheel 510 is provided with a third connecting shaft 511. The second connecting shaft 504, the fourth transmission wheel 508 and the third connecting shaft 511 are all rotationally connected to the flotation tank 1, and the third connecting shaft 511 is provided with a second bubble scraping frame 512.

[0023] The working process is as follows: S1. When in use, the first driving member 21 is started to rotate forward, the first driving member 21 drives the first transmission wheel 232 to rotate forward through the first transmission belt 22, and the first transmission wheel 232 drives the spiral plate 233, the mineralization disk 234 and the second gear 235 to rotate through the first connecting shaft 231; S2, the slurry enters the connection cover 242 through the feed pipe 243, and the spiral plate 233 rotating with the first connecting shaft 231 pushes the slurry in the connection cover 242 to the mineralization disk 234. As the mineralization disk 234 rotates, the slurry flows outward under the action of centrifugal force and the push of the subsequent slurry (such as Figure 6 shown); S3, open the valve 402, the reagent enters the distribution pipe 403 through the dosing pipe 401, and then enters the flotation tank 1 from the nozzle 404 on the distribution pipe 403 to mix with the slurry, the airflow enters the connecting pipe 24 through the air inlet pipe 241, and flows out from the connecting cover 242 along the connecting pipe 24. As the mineralization disk 234 rotates, the mineralization disk 234 and the annular grid 105 rotate relative to each other, shearing the airflow to form bubbles; S4, the second gear 235 drives the gear ring 301 to rotate through the first gear 107, and the gear ring 301 drives the material stripping plate 303 to rotate through the rotating ring 302, and the rotation direction is opposite to the rotation direction of the mineralization disk 234. The material stripping plate 303 pushes the slurry that passes through the annular grille 105 outward. When the slurry hits the inner wall of the flotation tank 1, it flows upward. The slurry near the connecting cover 242 is driven by the flowing slurry and flows outward together to form a cycle, so that the mineral particles in the slurry are floated (such as Figure 7 shown); S5. As the use time increases, when more and more gangue particles are accumulated at the bottom of the flotation tank 1, the first driving member 21 is started to reverse, and the first driving member 21 drives the first transmission wheel 232 to reverse through the first transmission belt 22. The first transmission wheel 232 drives the spiral plate 233, the mineralization disk 234 and the second gear 235 to rotate through the first connecting shaft 231. As the mineralization disk 234 rotates, the slurry flows outward under the action of centrifugal force and the push of the subsequent slurry (such as Figure 8 shown); S6, the second gear 235 drives the gear ring 301 to rotate through the first gear 107, and the gear ring 301 drives the material stripping plate 303 to rotate through the rotating ring 302, and the rotation direction is opposite to the rotation direction of the mineralization disk 234, and the material stripping plate 303 pushes the gangue particles accumulated at the bottom of the flotation tank 1 inward, and the slurry pushed outward by the mineralization disk 234 and the gangue particles pushed inward by the material stripping plate 303 flow relative to each other, so that the gangue particles accumulated at the bottom of the flotation tank 1 are loosened and contacted with the bubbles moving outward from the mineralization disk 234 with the slurry again, and the mineral particles doped in the gangue particles are floated (such as Fig. 9 shown); S7. At the same time, the second driving member 501 is started. The second driving member 501 drives the second transmission wheel 503 through the second transmission belt 502. The second transmission wheel 503 drives the first bubble scraping frame 505 and the third transmission wheel 506 to rotate through the second connecting shaft 504. The third transmission wheel 506 drives the fourth transmission wheel 508 to rotate through the third transmission belt 507. The fourth transmission wheel 508 drives the fifth transmission wheel 510 to rotate through the transmission shaft 509. The fifth transmission wheel 510 drives the second bubble scraping frame 512 to rotate through the third connecting shaft 511. The first bubble scraping frame 505 and the second bubble scraping frame 512 scrape the floating mineralized foam into the collecting tank 103 and discharge it along the second discharge pipe 104. The tailings enter the feed pipe 243 of the next flotation device from the first discharge pipe 102 to carry out the next level of flotation.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage mineral flotation device, comprising a plurality of flotation devices connected in sequence, characterized in that: The flotation device comprises a flotation cell, a mixing mechanism is arranged in the middle of the flotation cell, an auxiliary component is arranged inside the flotation cell, the position of the auxiliary component corresponds to the position of the mixing mechanism, a dosing mechanism is arranged inside the flotation cell, and a bubble scraping mechanism is arranged on the flotation cell; An annular grid is arranged inside the flotation tank, a connecting groove is opened at the bottom of the flotation tank, and a first gear is arranged inside the connecting groove; The mixing mechanism comprises a first driving member, an output end of which is provided with a first transmission belt, the first driving member is connected to a bubble mineralization component through the first transmission belt, and a connecting pipe is provided on the bubble mineralization component; The bubble mineralization assembly comprises a first connecting shaft, a first transmission wheel is arranged at one end of the first connecting shaft, the first transmission wheel is transmission-connected to the first driving member through the first transmission belt, a spiral plate is arranged on the first connecting shaft, a mineralization disk is arranged at one end of the first connecting shaft away from the first transmission wheel, and a second gear is arranged at a side of the mineralization disk away from the spiral plate; The auxiliary component comprises a gear ring, a rotating ring is arranged on the gear ring, and a material stripping plate is arranged on the rotating ring.

2. A multi-stage mineral flotation device according to claim 1, characterized in that: A connecting frame is arranged on the top of the flotation tank, a first discharge pipe is arranged on the bottom of one side of the flotation tank, a collecting tank is arranged on the flotation tank, and a second discharge pipe is arranged on the bottom of the collecting tank.

3. A multi-stage mineral flotation device according to claim 1, characterized in that: The connecting pipe is provided with an air inlet pipe, one end of the connecting pipe is provided with a connecting cover, the spiral plate is arranged inside the connecting cover, and the connecting cover is provided with a feed pipe.

4. A multi-stage mineral flotation device according to claim 2, characterized in that: The dosing mechanism comprises a dosing pipe, a valve is arranged on the dosing pipe, a distribution pipe is arranged at one end of the dosing pipe, and a nozzle is arranged on the distribution pipe.

5. A multi-stage mineral flotation device according to claim 1, characterized in that: The bubble scraping mechanism includes a second driving member, which is fixedly mounted on the flotation tank, a second transmission belt is provided at the output end of the second driving member, the second driving member is connected to the second transmission wheel through the second transmission belt, a second connecting shaft is provided at the middle of the second transmission wheel, a first bubble scraping frame is provided on the second connecting shaft, a third transmission wheel is provided at an end of the second connecting shaft away from the second transmission wheel, a third transmission belt is provided on the third transmission wheel, the third transmission wheel is connected to the fourth transmission wheel through the third transmission belt, the fourth transmission wheel is connected to the transmission shaft, the transmission shaft is rotatably connected to one side of the flotation tank, the transmission shaft is connected to the fifth transmission wheel, the third connecting shaft is provided on the fifth transmission wheel, the second connecting shaft, the fourth transmission wheel and the third connecting shaft are all rotatably connected to the flotation tank, and a second bubble scraping frame is provided on the third connecting shaft.

6. A multi-stage mineral flotation device according to claim 2, characterized in that: The connecting pipe is fixedly mounted on the connecting frame.

7. A multi-stage mineral flotation device according to claim 2, characterized in that: The second gear meshes with the first gear.

8. A multi-stage mineral flotation device according to claim 2, characterized in that: The gear ring is drivingly connected to the second gear through the first gear.

9. A multi-stage mineral flotation device according to claim 4, characterized in that: The dosing pipe is fixedly connected to the connecting frame through a clamp.

10. A multi-stage mineral flotation device according to claim 1, characterized in that: There are multiple material-shifting plates distributed in a circular array on the rotating ring, and the shape of the material-shifting plates is arc-shaped.

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