Mineralization device and flotation equipment

Abstract

The mineralization device comprises a mineralization tank and a rotor assembly, a mechanical stirring cavity is formed in the mineralization tank, a pulp inlet used for supplying pulp into the mechanical stirring cavity is formed in the bottom of the mineralization tank, and a pulp outlet used for discharging the mechanically stirred pulp is formed in the top of the mineralization tank; in the longitudinal section of the mineralization tank, the peripheral wall of the mineralization tank comprises a plurality of line segments which are connected in sequence, and the inclination angles of the adjacent line segments are different from each other, the rotor assembly comprises a rotating shaft and a rotor, and the lower end of the rotating shaft extends into the mechanical stirring cavity; the rotor is located in the mechanical stirring cavity and installed at the lower end of the rotating shaft so as to be driven by the rotating shaft to rotate to conduct mechanical stirring in the mechanical stirring cavity. According to the mineralization device, a strong turbulent flow field can be formed in the mechanical stirring cavity, mineralization weak areas are reduced, and the mineralization effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of flotation technology, in particular to a mineralization device and a flotation equipment. Background Art

[0002] Flotation is a widely used mineral processing method. When using flotation equipment for flotation, the slurry is introduced into the flotation tank and mechanically stirred or aerated for mineralization. After mineralization, the target particles selectively attach to the bubbles to form mineralized bubbles, which float up, and other particles that are not attached to the bubbles are discharged from the bottom of the flotation tank with the slurry, thereby achieving the purpose of separating minerals.

[0003] In the related art, a mechanical stirring chamber is provided in the flotation equipment, and the slurry and air are introduced into the mechanical stirring chamber from the outside, and mineralization is carried out under the action of mechanical stirring. However, the mechanical stirring chamber in the related art has problems such as poor mineralization effect and easy local wear. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a mineralization device with improved mineralization effect.

[0006] The embodiment of the present invention further provides a flotation device.

[0007] The mineralization device of the embodiment of the present invention includes: a mineralization trough, wherein the mineralization trough has a mechanical stirring chamber, wherein the bottom of the mineralization trough is provided with a slurry inlet for supplying slurry into the mechanical stirring chamber, and the top of the mineralization trough is provided with a slurry outlet for discharging the slurry after mechanical stirring, wherein in the longitudinal section of the mineralization trough, the peripheral wall of the mineralization trough includes a plurality of line segments connected in sequence, and the inclination angles of adjacent line segments are different from each other; a rotor assembly, wherein the rotor assembly includes a rotating shaft and a rotor, wherein the lower end of the rotating shaft extends into the mechanical stirring chamber, and the rotor is located in the mechanical stirring chamber and is installed at the lower end of the rotating shaft so as to be driven to rotate by the rotating shaft to perform mechanical stirring in the mechanical stirring chamber.

[0008] The mineralization device of the embodiment of the present invention introduces the slurry into the mineralization tank from bottom to top through the slurry inlet, the rotor rotates and stirs in the mechanical stirring chamber, the air is broken into tiny bubbles, and the target particles are attached to the bubbles to form mineralized bubbles. The peripheral wall of the mineralization tank includes a plurality of line segments connected in sequence, so the inner wall of the mineralization tank enhances the reflection, rectification and surging effects on the slurry and bubbles, thereby improving the mineralization effect. Moreover, since the inclination angles of adjacent line segments are different from each other, that is, the inclination angles of different parts of the peripheral wall of the mineralization tank are different, the angles of the slurry reflected by different peripheral wall parts are different. Compared with a smooth peripheral wall such as a parabola, the effect of the slurry flows reflected by the peripheral wall parts with different inclination angles on mutual collision in the mineralization tank is enhanced, thereby enhancing the turbulence generated in the mineralization tank, reducing the weak mineralization area, and further increasing the probability of bubble generation and adhesion to the target particles, thereby improving the mineralization effect and reducing the local wear of the mineralization tank. Therefore, the mineralization device of the embodiment of the present invention can form a strong turbulent flow field in the mechanical stirring chamber, reduce the weak mineralization area, improve the mineralization effect, and reduce the local wear of the mineralization tank.

[0009] In some embodiments, the number of the line segments is proportional to the area of ​​the slurry outlet.

[0010] In some embodiments, the inclination angle between the line segment and the horizontal plane is α, where 10°≤α<90°.

[0011] In some embodiments, the rotor is an impeller, the impeller includes a hub, a wheel disc, a top plate, a bottom plate and blades, the blades include upper blades and lower blades, the hub is mounted on the lower end of the rotating shaft, the wheel disc, the top plate and the bottom plate are mounted on the hub and the wheel disc is located between the top plate and the bottom plate, there are multiple upper blades and multiple lower blades, multiple upper blades are arranged between the upper surface of the wheel disc and the top plate and are arranged at intervals along the circumference of the wheel disc, multiple lower blades are arranged between the lower surface of the wheel disc and the wheel disc and are arranged at intervals along the circumference of the wheel disc, the upper blades and the lower blades correspond to each other one by one or are staggered along the circumference of the wheel disc.

[0012] In some embodiments, the rotor includes a wheel disc and a plurality of blades, wherein the wheel disc is mounted at the lower end of the rotating shaft, and the plurality of blades are arranged at intervals along the circumference of the wheel disc on the outer periphery of the wheel disc. In the longitudinal section of the rotor, the contour line of the outer side surface of the blade includes a vertical segment and an arc segment, and the upper end of the arc segment is connected to the lower end of the vertical segment and gradually extends inward.

[0013] In some embodiments, the blade is provided with a first hollow hole extending through the blade along the thickness direction thereof.

[0014] In some embodiments, a plurality of turbulence enhancement plates are provided in the mechanical stirring chamber, and the plurality of turbulence enhancement plates are arranged at intervals along the circumference of the mechanical stirring chamber, and the turbulence enhancement plates are connected to the inner wall of the mechanical stirring chamber.

[0015] In some embodiments, the rotor is an impeller, the outer diameter of the impeller is A, and the gap between the outer edge of the impeller and the inner edge of the turbulence enhancement plate in the radial direction of the rotating shaft is B, wherein 0.03A≤B≤0.2A.

[0016] In some embodiments, the turbulence reinforcement plate is provided with a second hollow hole extending through the plate along its thickness direction; and / or the upper end surface of the turbulence reinforcement plate is flush with the upper end surface of the mineralization trough, and the lower end surface of the turbulence reinforcement plate is flush with the lower end surface of the mineralization trough.

[0017] In some embodiments, the mineralization device further includes a feed box, which is disposed below the mineralization tank. The feed box has a feed port suitable for being connected to a feed pipe for supplying slurry into the feed box, and a discharge port connected to the slurry port for supplying the slurry in the feed box to the mechanical stirring chamber. The feed box and the mineralization tank are formed separately or integrally.

[0018] In some embodiments, the mineralization device further includes an anti-settling component, which includes at least one of a rake and a spray gun, wherein the rake is arranged at the bottom of the mechanical stirring chamber and below the rotor, and the rake is driven to rotate by the rotating shaft; the spray end of the spray gun extends into the bottom of the mechanical stirring chamber, and is used to spray water and / or gas to the bottom of the mechanical stirring chamber.

[0019] In some embodiments, the cross-sectional area of ​​the mechanical stirring chamber gradually decreases from top to bottom in the longitudinal direction of the mineralization tank, or the cross-sectional area of ​​the mechanical stirring chamber gradually increases from both ends of the mechanical stirring chamber toward the middle of the mechanical stirring chamber in the longitudinal direction of the mineralization tank.

[0020] In some embodiments, the rotating shaft has an air supply channel for supplying air for mechanical stirring mineralization into the mechanical stirring chamber.

[0021] A flotation device according to another embodiment of the present invention includes: a mineralization device, which is the mineralization device described in any one of the embodiments of the present invention; a tank body, in which the mineralization device is disposed; and a driving device, which is disposed above the tank body and connected to a rotating shaft of the mineralization device to drive the rotating shaft to rotate.

[0022] The flotation equipment of the embodiment of the present invention can form a strong turbulent flow field in the mechanical stirring chamber, reduce the weak mineralization area, improve the mineralization effect, and reduce the local wear of the mineralization tank.

[0023] In some embodiments, the flotation equipment also includes an aeration device, the cell body is provided with an upper area and a column selection area, the upper area is located above the mineralization cell, the column selection area includes a lower area and a connecting area, the lower area is located below the mineralization cell, the connecting area is located between the outer peripheral wall of the mineralization cell and the inner peripheral wall of the cell body, the aeration device is connected to the lower area, and is used to fill gas into the lower area, so as to column select the ore pulp entering the column selection area from the mechanical stirring chamber in the column selection area.

[0024] In some embodiments, the flotation device further comprises a plurality of guide plates, wherein the guide plates are disposed in the communication area, and the plurality of guide plates are arranged at intervals along the circumference of the mineralization tank.

[0025] In some embodiments, the flotation equipment also includes a bubble scraping device, which includes a rotatable scraper, and the scraper is arranged in the trough body and located in the foam area above the upper area. The scraper is arc-shaped or involute-shaped, and the angle between the scraper and the vertical plane is 0-30 degrees.

[0026] In some embodiments, the scrapers are at least two layers and are arranged at intervals in the up and down directions. Each layer has multiple scrapers, and the multiple scrapers in each layer are arranged at intervals along the circumference of the trough body. For two adjacent layers of scrapers, the number of scrapers in the upper layer is greater than the number of scrapers in the lower layer.

[0027] In some embodiments, the scraper is adjustable in axial position along the trough body; and / or, the scraper is provided with a third hollow hole penetrating along the thickness direction thereof.

[0028] In some embodiments, the flotation equipment also includes a premineralization device, which is used to premineralize the slurry. The premineralization device is arranged outside the tank body and is connected to the slurry inlet of the mechanical stirring chamber to supply the premineralized slurry into the mechanical stirring chamber. The premineralization device is a mechanical stirring mineralization type or an aerated mineralization type. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of a flotation device according to an embodiment of the present invention.

[0030] Figure 2 Schematic diagram of a flotation device according to another embodiment of the present invention.

[0031] Figure 3 Schematic diagram of a flotation device according to another embodiment of the present invention.

[0032] Figure 4 It is a schematic longitudinal section diagram of a mineralization device according to an embodiment of the present invention.

[0033] Figure 5 It is a three-dimensional schematic diagram of a mineralization device according to an embodiment of the present invention.

[0034] Figure 6 It is a partial cross-sectional schematic diagram of a mineralization device according to an embodiment of the present invention.

[0035] Figure 7 Schematic diagram of a rotor of a mineralization device according to an embodiment of the present invention.

[0036] Figure 8 It is a partial cross-sectional schematic diagram of the rotor of the mineralization device according to an embodiment of the present invention.

[0037] Fig. 9 Schematic diagram of a rotor of a mineralization device according to another embodiment of the present invention.

[0038] Fig.10 Schematic diagram of a turbulence enhancement plate of a mineralization device according to an embodiment of the present invention.

[0039] Fig.11 It is a top view schematic diagram of a tank body and a bubble scraping device of a flotation device according to an embodiment of the present invention.

[0040] Fig.12 Schematic diagram of a rake frame of a mineralization device according to an embodiment of the present invention.

[0041] Reference numerals:

[0042] 1. Mineralization tank; 11. Slurry inlet; 12. Slurry outlet; 13. Mechanical stirring chamber; 14. Line segment; 15. Turbulence reinforcement plate; 151. Second hollow hole; 16. Drainage plate;

[0043] 2. rotor assembly; 21. rotating shaft; 211. air supply channel; 22. rotor; 221. hub; 222. wheel disc; 2220. jet channel; 223. blade; 2231. upper blade; 2232. lower blade; 2233. first hollow hole; 2234. vertical section; 2235. arc section; 224. top plate; 225. bottom plate;

[0044] 31. Cover plate; 311. Flow hole; 32. Feed pipe; 33. Feed box; 34. Anti-settling assembly; 341. Rake frame; 342. Spray gun; 35. Drive device; 36. Pre-mineralization device; 37. Turbulence suppression grid;

[0045] 4. trough body; 41. lower area; 42. upper area; 43. connecting area; 44. discharge port;

[0046] 5. Inflatable device;

[0047] 6. Bubble scraping device; 61. Scraper. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0049] Please refer to the following Figures 1 to 12 A mineralization device according to an embodiment of the present invention and a flotation device having the mineralization device are described.

[0050] like Figures 1 to 6 As shown, the mineralization device of the embodiment of the present invention comprises: a mineralization tank 1 and a rotor assembly 2. The mineralization tank 1 has a mechanical stirring chamber 13, and the mechanical stirring chamber 13 is used to carry out mineralization therein, which is referred to as mechanical stirring mineralization, that is, the target particles in the slurry and the air supplied into the mechanical stirring chamber 13 are mechanically stirred by the rotor assembly 2, and the target particles are attached to the bubbles to form mineralized bubbles, thereby realizing mechanical stirring flotation, in other words, realizing the flotation function of the flotation equipment.

[0051] A slurry inlet 11 is provided at the bottom of the mineralization tank 1, and the slurry inlet 11 is used to supply slurry into the mechanical stirring chamber 13. A slurry outlet 12 is provided at the top of the mineralization tank 1 for discharging slurry. It can be understood that the slurry coming out of the mechanical stirring chamber includes target particles attached to the bubbles and other particles (target particles not attached to the bubbles or other non-target particles).

[0052] In the longitudinal section of the mineralized groove 1, that is, along the axial direction of the mineralized groove 3 ( Figure 3 In the cross section of the mineralization tank (in the up and down direction in the middle), the peripheral wall of the mineralization tank 1 includes a plurality of line segments 14 connected in sequence, and the inclination angles of adjacent line segments 14 are different from each other. In other words, the peripheral wall of the mineralization tank 1 is not a parabolic smooth wall, but is composed of a plurality of straight line segments, and the inclination angles of different peripheral wall parts are different. Here, it should be understood that the peripheral wall of the mineralization tank includes a plurality of line segments connected in sequence, which means that the inner peripheral wall surface of the mineralization tank (i.e., the outer peripheral surface of the mechanical stirring chamber) is composed of a plurality of line segments connected in sequence, rather than a smooth surface such as a parabola, and the outer peripheral wall surface of the mineralization tank may be parallel to the inner peripheral wall surface, or may not be parallel.

[0053] The rotor assembly 2 includes a rotating shaft 21 and a rotor 22. The lower end of the rotating shaft 21 extends into the mechanical stirring chamber 13. The rotor 22 is installed at the lower end of the rotating shaft 21 and is located in the mechanical stirring chamber 13. The rotor 22 is driven to rotate by the rotating shaft 21 to perform mechanical stirring in the mechanical stirring chamber 13. The air used for mineralization can preferably be supplied into the mechanical stirring chamber 13 through the rotating shaft 12. Of course, a separate air supply pipeline can also be provided to supply air to the mechanical stirring chamber 13.

[0054] The mineralization device of the embodiment of the present invention introduces the slurry into the mineralization tank 1 from bottom to top through the slurry inlet 11, and the rotor 22 rotates and stirs in the mechanical stirring chamber 13, the air is broken into tiny bubbles, and the target particles are attached to the bubbles to form mineralized bubbles. Since the peripheral wall of the mineralization tank 1 includes a plurality of line segments 14 connected in sequence in the longitudinal section of the mineralization tank 1, the inner wall of the mineralization tank 1 enhances the reflection, rectification and surging effects on the pulp and bubbles, thereby improving the mineralization and flotation effects. Moreover, since the inclination angles of adjacent line segments 14 are different from each other, that is, the inclination angles of different parts of the peripheral wall of the mineralization tank 1 are different, the reflection angles of different peripheral wall parts are different. Compared with the parabolic peripheral wall, the mutual collision effect between the pulp flows reflected by the peripheral wall parts with different inclination angles and between the pulp and bubbles in the mineralization tank 1 is enhanced, thereby enhancing the turbulence generated by the mineralization tank 1, reducing the weak mineralization area, and further increasing the probability of bubble generation and adhesion to the target particles, thereby improving the mineralization and flotation effects, and reducing the local wear of the mineralization tank 1. Therefore, the mineralization device of the embodiment of the present invention can form a strong turbulent flow field in the mechanical stirring chamber 13, reduce the weak mineralization area, improve the mineralization and flotation effects, and reduce the local wear of the mineralization tank 1. By changing the inclination angle of different peripheral wall parts, it can adapt to different slurries, thereby improving applicability.

[0055] It can be understood that mineralization refers to the selective adhesion process of target particles and bubbles. After mineralization, the slurry includes mineralized bubbles (mineralized bubbles can be called mineralized foam after aggregation. In the following description, mineralized bubbles and mineralized foam can be used interchangeably) and other particles not attached to the bubbles. Mineralized bubbles are target particles attached to bubbles. Here, the target particles attached to the bubbles can also be called mineralized particles. Other particles may include target particles not attached to the bubbles, non-target mineral particles not attached to the bubbles, and tailings particles.

[0056] Compared with related technologies, for example, compared with a mechanically stirred mineralization space with a parabolic side wall, the mineralization device of the embodiment of the present invention improves the turbulence intensity and strengthens the stirring effect by changing the shape of the surrounding side walls of the mineralization space, thereby improving the mineralization and flotation effects.

[0057] For example, Figures 1 to 4 As shown, the cross-sectional area of ​​the mechanical stirring chamber 13 gradually decreases from top to bottom, and the mineralization tank 1 may have a generally segmented basin-shaped structure. The segmented basin-shaped mechanical stirring chamber 13 may provide reflections in multiple directions for the slurry and bubbles stirred by the rotor, thereby strengthening the collision effect of the slurry flow, increasing the turbulence intensity, and improving the mineralization and flotation effects.

[0058] Compared with the parabolic structure of the mineralization trough 1 in the related art, the mineralization trough 1 of the mineralization device in the embodiment of the present invention is easier to process and obtain multiple reflection focuses. In other words, the mineralization trough 1 in the embodiment of the present invention is easier to achieve multiple reflection focuses close to the theoretical design, which improves the actual application effect. For mineralization troughs 1 of different sizes, by adjusting the number and inclination of the line segments 14 in the longitudinal section of the mineralization trough 1, a solution close to the theoretical focus can still be obtained, and it is easier to realize the theoretical flow field model, that is, folding and surging in multiple directions along the inner wall of the mineralization trough 1, thereby forming a strong turbulent flow field. The mineralization trough 1 in the embodiment of the present invention can strengthen the overall mineralization and reduce the mineralization weak area 13 in the mechanical stirring chamber, reducing the situation of local excessive wear of the mineralization trough 1.

[0059] For example, for coarser particles, the distance between the upper edge of the mineralization tank 1 and the inner bottom wall (i.e., the depth of the mineralization tank 1) can be adjusted to allow the particles to participate in circulation and mixed mineralization multiple times, reduce the falling of coarse particles, and avoid the slurry sinking to the bottom and clogging the pipeline.

[0060] The angle of the edge of the slurry outlet 12 of the mineralization tank 1 of the embodiment of the present invention can be adaptively adjusted to avoid the slurry rushing out of the mineralization tank 1 due to an excessively large angle, which is beneficial to improving the mineralization efficiency and effect of the mineralization tank 1.

[0061] Preferably, if Figure 1 and Figure 4 As shown, the inclination angle between the line segment 14 and the horizontal plane is α, where 10°≤α<90°. For example, the inclination angle α between the line segment 14 and the horizontal plane can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°. Alternatively, the inclination angle α can be close to and less than 90°. The inventors of the embodiments of the present invention have found through research and verified through experiments that when the inclination angle α between the line segment 14 and the horizontal plane is within the above-mentioned angle range, the mineral material can be better involved in circulation and mixed mineralization, the turbulence effect generated in the mineralization tank 1 can be enhanced, and the slurry can be prevented from rushing out of the mineralization tank 1 along the side wall of the mineralization tank 1, which is conducive to improving the mineralization efficiency and effect of the mineralization tank 1.

[0062] Optionally, in some embodiments, the number of line segments 14 is proportional to the area of ​​the slurry outlet 12. It is understandable that when the area of ​​the slurry outlet 12 is larger, the number of line segments 14 is greater, thereby improving the reflection and rectification effect of the mineralization tank 1, thereby forming a strong turbulent flow field. When designing the mineralization tank 1, the structure of the mineralization tank 1 can be adjusted as the mineralization tank 1 increases and the mineral type changes, so as to meet the mineralization requirements of the mineralization device and improve the mineralization effect.

[0063] In some embodiments, Figures 6 to 8As shown, the rotor 22 is in the form of an impeller, which includes a hub 221 , a wheel disc 222 , a top plate 224 , a bottom plate 225 , and blades 223 , wherein the blades 223 include an upper blade 2231 and a lower blade 2232 .

[0064] The hub 221 is mounted at the lower end of the rotating shaft 21, and the wheel disc 222, the top plate 224 and the bottom plate 225 are mounted on the hub 221, and the wheel disc 222 is located between the top plate 224 and the bottom plate 225. There are multiple upper blades 2231 and multiple lower blades 2232, and multiple upper blades 2231 are arranged between the upper surface of the wheel disc 222 and the top plate 224 and are arranged at intervals along the circumference of the wheel disc 222. Multiple lower blades 2232 are arranged between the lower surface of the wheel disc 222 and the wheel disc 222 and are arranged at intervals along the circumference of the wheel disc 222. The upper blades 2231 and the lower blades 2232 correspond to each other one by one or are staggered along the circumference of the wheel disc 222. Preferably, the upper blades 2231 and the lower blades 2232 are staggered, that is, the upper blades 2231 and the lower blades 2232 are not aligned with each other along the axial direction of the impeller.

[0065] When the impeller rotates, the upper blades 2231 on the upper side of the wheel disc 222 and the lower blades 2232 on the lower side of the wheel disc 222 rotate simultaneously, which can enhance the slurry suction capacity of the impeller (the ability to suck the slurry from the slurry inlet 11 into the mechanical stirring chamber 13) on the one hand, and enhance the intensity of the internal slurry circulation, improve the mineralization effect of the slurry, and enhance the selectivity in the flotation process on the other hand.

[0066] For example, the upper blades 2231 and the lower blades 2232 are radially distributed, and the number of the upper blades 2231 and the lower blades 2232 are between 4 and 16 and are evenly arranged. It should be noted that the number of the upper blades 2231 and the lower blades 2232 can be equal or unequal, and the embodiment of the present invention is not limited to this.

[0067] Since the upper blades 2231 are arranged between the upper surface of the wheel disc 222 and the top plate 224, and the lower blades 2232 are arranged between the lower surface of the wheel disc 222 and the wheel disc 222, the intensity of the internal slurry circulation can be further enhanced, and the energy utilization rate of the impeller rotation is improved, which is beneficial to enhance the capture effect of bubbles on target particles and enhance the selectivity in the flotation process.

[0068] For example, the outer circumference of the top plate 224 is substantially consistent with the size of the outer circumference formed by the plurality of upper blades 2231 , and the outer circumference of the bottom plate 225 is substantially consistent with the size of the outer circumference formed by the plurality of lower blades 2232 .

[0069] In another example, if Fig. 9As shown, the rotor 22 is located in the mechanical stirring chamber 13, and the rotor 22 includes a wheel disc 222 and a plurality of blades 223. The wheel disc 222 is installed at the lower end of the rotating shaft 21, and the plurality of blades 223 are arranged at intervals along the circumference of the wheel disc 222 on the outer peripheral edge of the wheel disc 222. In the longitudinal section of the rotor 22, the contour line of the outer side surface of the blade 223 includes a vertical section 2234 and an arc section 2235. The upper end of the arc section 2235 is connected to the upper end of the vertical section 2234 and gradually extends inward, so that when the rotor 22 rotates, the stirred slurry area turns upward along the arc section. The mineralization device of the embodiment of the present invention can improve the turbulence effect of the slurry in the mechanical stirring chamber 13 by setting the blades 223 as the above structure, enhance the capture effect of bubbles on target particles, enhance the intensity of internal slurry circulation, and improve the energy utilization rate of impeller rotation.

[0070] Alternatively, if Fig. 9 As shown, the rotating shaft 21 has an air supply channel 211 for supplying air for mechanical stirring mineralization into the mechanical stirring chamber 13, and the wheel disc 222 has an air jet channel 2220 connected to the air supply channel 211 in the rotating shaft 21, and the air jet outlets of the air jet channel 2220 are formed on the outer peripheral surface of the wheel disc 222 and arranged at intervals along the circumference of the wheel disc 222. Since the air jet outlets of the air jet channel 2220 in the wheel disc 222 are formed on the outer peripheral surface of the wheel disc 222 and arranged at intervals along the circumference of the wheel disc 222, the mixing degree of the slurry and the bubbles can be improved, and the mineralization effect of the mineralization component can be improved.

[0071] Alternatively, if Fig. 9 As shown, the blade 223 is provided with a first hollow hole 2233 that penetrates along the thickness direction thereof. The blade 223 of the mineralization device of the embodiment of the present invention is designed as a hollow structure, and it is easier to generate tiny bubbles when the impeller rotates, so that the circulation and mixing effect of the ore pulp and the bubbles is better, which is more conducive to the mineralization of fine-grained minerals.

[0072] For example, the first hollow hole 2233 may be a strip hole or a round hole. The strip hole may extend obliquely, horizontally, or vertically. There may be a plurality of first hollow holes 2233, and the plurality of first hollow holes 2233 may be discretely arranged.

[0073] In some embodiments, Figure 4 and Figure 6 As shown, a plurality of turbulence reinforcing plates 15 may be provided in the mechanical stirring chamber 13, and the plurality of turbulence reinforcing plates 15 are arranged at intervals along the circumference of the mechanical stirring chamber 13, and the turbulence reinforcing plates 15 are tangentially connected to the inner wall of the mechanical stirring chamber 13 and surround the rotor 22. When the rotor 22 rotates, since the plurality of turbulence reinforcing plates 15 are arranged at intervals along the circumference of the mechanical stirring chamber 13, the slurry flowing in the circumferential direction in the mechanical stirring chamber 13 is stopped and collided by the plurality of turbulence reinforcing plates 15, thereby improving the turbulence effect of the slurry in the mechanical stirring chamber 13, and thus improving the mineralization effect.

[0074] Alternatively, if Figure 4 As shown, the rotor 22 is in the form of an impeller, the outer diameter of the impeller is A, and the gap between the outer edge of the impeller and the inner edge of the turbulence reinforcement plate 15 in the radial direction of the rotating shaft 21 is B, wherein 0.03A≤B≤0.2A. In other words, the gap between the impeller and the inner edge of the turbulence reinforcement plate 15 is 3%-20% of the impeller diameter. For example, B is equal to 0.03A, 0.08A, 0.12A, 0.15A, 0.2A. The inventors of the embodiments of the present invention have found through research and have confirmed through experiments that when the impeller and the turbulence reinforcement plate 15 adopt the above-mentioned structural parameters, it can make it easier for the air to generate tiny bubbles during the mineralization of the slurry, and the circulation mixing effect is better, which is more conducive to the flotation of fine particles.

[0075] Alternatively, if Fig.10 As shown, the turbulence reinforcement plate 15 is provided with a second hollow hole 151 that penetrates along the thickness direction thereof. The turbulence reinforcement plate 15 of the mineralization device of the embodiment of the present invention is designed as a hollow structure, so that tiny bubbles are more easily generated when the impeller rotates, so that the circulation and mixing effect of the ore pulp and the bubbles is better, which is more conducive to the flotation of fine-grained minerals, and the resistance of the ore pulp during flow is smaller, and the energy dissipation is less.

[0076] The opening size of the second hollow hole 151 can be designed according to the mineral properties, and the embodiment of the present invention is not limited to this. For example, the second hollow hole 151 can be a strip hole or a round hole. The strip hole can extend obliquely, horizontally, or vertically. There can be multiple second hollow holes 151, and the multiple second hollow holes 151 are discretely arranged.

[0077] In other examples, the turbulence enhancement plate 15 may also be a solid plate.

[0078] In some embodiments, the turbulence reinforcement plate 15 can be divided into multiple sections in the radial direction of the mineralization tank 1. The multiple sections can be connected to each other as a whole, or can be divided into sections and distributed at intervals. Multiple turbulence reinforcement plates 15 can be aligned in the radial direction, or can be staggered obliquely in the radial direction. According to the characteristics of the mineral, the structural form of the turbulence reinforcement plate 15 can be conveniently selected to improve applicability.

[0079] Alternatively, if Figure 4 and Figure 6 As shown, the upper end surface of the turbulence reinforcement plate 15 is flush with the upper end surface of the mineralization tank 1, and the lower end surface of the turbulence reinforcement plate 15 is flush with the lower end surface of the mineralization tank 1. Since the lower end surface of the turbulence reinforcement plate 15 is flush with the lower end surface of the mineralization tank 1, it can be ensured that the slurry at the bottom of the mechanical stirring chamber 13 has a good turbulent effect. The upper end surface of the turbulence reinforcement plate 15 is flush with the upper end surface of the mineralization tank 1, which can reduce the impact of the turbulence in the mechanical stirring chamber 13 on the lower side of the upper area 42 above the mineralization tank 1, which is conducive to the rise of mineralized bubbles.

[0080] In the related art, mineralization is carried out in the mineralization tank of the flotation equipment, and the slurry is introduced into the mineralization tank from the outside, and mineralization is carried out under the action of gas supply and mechanical stirring in the slurry. However, the inventors have found that due to the large space in the mineralization tank, the mineralization and flotation effects are poor and the flotation efficiency is not high. To this end, the related art proposes to set a parabolic basin-shaped reflection bottom in the mineralization tank, the slurry and gas are supplied into the reflection bottom, and mechanical stirring is carried out in the reflection bottom to achieve bubble mineralization. The reflection bottom reflects the slurry containing mineralized bubbles upward out of the reflection bottom to improve the flotation efficiency, but the inventors find that there are still problems of poor mineralization and flotation effects and low efficiency. The inventors have found through research that compared with mineralization in the mineralization tank, the flotation efficiency can be improved to a certain extent by the reflection effect of the reflection bottom, but because the top of the reflection bottom is open, the stirred slurry is quickly discharged from the reflection bottom under the reflection effect of the reflection bottom, and the residence time is short, thereby affecting the mineralization effect.

[0081] In order to further improve the mineralization and flotation effects and improve the flotation efficiency, the inventors proposed a scheme of confined mineralization. The so-called confined mineralization refers to the mineralization being carried out in a relatively closed and relatively narrow limited space compared with the related art. The limited space can also be called a confined space, a restricted area, a limited area or a restricted area, referred to as a confined area. For example, the confined area is smaller and relatively closed than the inner cavity of the mineralization tank in the related art, and is relatively closed compared with the open parabolic reflection bottom in the related art. During the mineralization process, the slurry and gas are introduced into the confined space, and mechanical stirring is carried out in the confined space, so that the air can form more bubbles. The bubbles and the target particles in the slurry are repeatedly reflected, stirred and collided with each other in the confined space, which increases the contact time, contact times and collision times of the bubbles and the target particles, thereby improving the mineralization and flotation effects, and then improving the efficiency. Therefore, in the present invention, the mineralization carried out in a confined space can be called confined mineralization.

[0082] Specifically, Figure 1 As shown, the mineralization device also includes a cover plate 31, which is arranged above the mineralization tank 1, wherein the cover plate 31 is opposite to the slurry outlet 12 and is spaced apart from the top surface of the mineralization tank 1 so that the mineralized slurry can flow out. It can be understood that the cover plate 31 and the mineralization tank 1 define a restricted mineralization area including the mechanical stirring chamber 13. The mineralization device of the embodiment of the present invention improves the sealing of the mechanical stirring chamber 13 by arranging the cover plate 31 above the mineralization tank 1, and can prolong the time of reflection, rectification and surging of the slurry in the mechanical stirring chamber 13, so as to increase the contact time, contact number and collision number of bubbles and target particles, thereby improving the mineralization and flotation effect. In addition, the flow field disturbance formed by the rotation of the rotor 22 is blocked by the cover plate 31, which can make the turbulence intensity in the lower side of the upper area 42 above the mechanical stirring chamber 13 lower, which is conducive to the rise of mineralized bubbles.

[0083] In other words, the turbulence of the slurry in the relatively closed and relatively small area of ​​the mineralization tank 1 with the cover plate 31 is more intense, the bubbles are smaller, and it is easier to capture fine particles. The mineralized bubbles flow more smoothly on the lower side of the upper area 42 above the mechanical stirring chamber 13, and the attached particles are more stable and not easy to fall off.

[0084] The spacing distance between the cover plate 31 and the top surface of the mineralization tank 1 can be adaptively adjusted according to different types of slurry, which is not limited in the embodiment of the present invention.

[0085] In other examples, such as Figure 4 As shown, the cover plate 31 covers the slurry outlet 12 and is provided with a flow hole 311 for connecting the mechanical stirring chamber 13 and the outside of the mechanical stirring chamber 13. The mineralized slurry containing mineralized bubbles in the mechanical stirring chamber 13 flows out through the flow hole 311. It can be understood that the cover plate 31 and the mineralization tank 1 define a relatively closed mineralization area including the mechanical stirring chamber 13. The mineralization device of the embodiment of the present invention improves the closedness of the mechanical stirring chamber 13 by arranging the cover plate 31 above the mineralization tank 1, and can prolong the time of reflection, rectification and surging of the slurry in the mechanical stirring chamber 13, so as to increase the contact time, contact and collision number of bubbles and target particles, thereby improving the mineralization and flotation effect. In addition, the flow field disturbance formed by the rotation of the rotor 22 is blocked by the cover plate 31, so that the turbulence intensity in the lower side of the upper area 42 above the mechanical stirring chamber 13 is low, which is conducive to the rise of mineralized bubbles.

[0086] In other words, the turbulence of the slurry in the relatively closed and relatively small area of ​​the mineralization tank 1 with the cover plate 31 is more intense, the bubbles are finer, and the bubbles are more likely to capture fine particles. The slurry flows more smoothly in the lower area of ​​the upper area 42 above the mechanical stirring chamber 13, the attached particles are more stable and not easy to fall off, and the mineralized bubbles rise smoothly, thereby improving the mineralization and flotation efficiency.

[0087] In some embodiments, Figure 4As shown, the mineralization device further includes a feed box 33, which is arranged below the mineralization tank 1. The feed box 33 has a feed port connected to the feed pipe 32 to supply slurry into the feed box 33 and a discharge port connected to the slurry inlet 11 to supply the slurry in the feed box 33 to the mechanical stirring chamber 13. The feed box 33 is made separately from the mineralization tank 1 or made integrally. It can be understood that the feed pipe 32 first supplies the slurry into the feed box 33, and then the slurry enters the mineralization tank 1 through the feed box 33. The mineralization device of the embodiment of the present invention, by arranging the feed box 33 below the mineralization tank 1, can buffer the slurry before entering the mineralization tank 1, so that the slurry can quickly enter the flow field stirred by the impeller, which is conducive to improving the turbulence effect of the slurry in the mechanical stirring chamber 13, enhancing the capture effect of bubbles on target particles, and enhancing the intensity of the internal slurry circulation.

[0088] In some embodiments, Figure 4 and Fig.12 As shown, the mineralization device further includes an anti-settling component 34, which includes at least one of a rake 341 and a spray gun 342, wherein the rake 341 is arranged at the bottom of the mechanical stirring chamber 13 and below the rotor 22, and the rake 341 can be driven to rotate by the rotating shaft 21. The spray gun 342 has a spray end extending into the bottom of the mechanical stirring chamber 13, and is used to spray water and / or gas, preferably, air, to the bottom of the mechanical stirring chamber 13.

[0089] When the anti-sedimentation component 34 is in the form of a rake 341, the rake 341 is arranged at the bottom of the mechanical stirring chamber 13 and is located below the rotor 22, and the rake 341 is driven to rotate by the rotating shaft 21. When the anti-sedimentation component 34 is in the form of a spray gun 342, the spray end of the spray gun 342 extends into the bottom of the mechanical stirring chamber 13, and is used to spray water and / or gas to the bottom of the mechanical stirring chamber 13. The rake 341 and the spray gun 342 can stir the minerals at the bottom of the mechanical stirring chamber 13, prevent the minerals from being deposited and blocked in the mechanical stirring chamber 13, and are conducive to improving the mineralization effect of the slurry. Moreover, the air sprayed by the spray gun 342 can further play a stirring mineralization role, thereby improving the mineralization effect. Preferably, an air path can also be set in the rake 341, and a part of the stirring gas supplied by the rotating shaft 21 is sprayed to the bottom of the mechanical stirring chamber 13 through the rake frame 341, which not only improves the effect of preventing particle sedimentation and aggregation, but also improves the mineralization effect.

[0090] In other examples, the cross-sectional area of ​​the mechanical stirring chamber 13 gradually increases from both ends of the mechanical stirring chamber 13 toward the middle of the mechanical stirring chamber 13 in the longitudinal direction of the mineralization tank 1. Taking the central longitudinal section of the mechanical stirring chamber 13 as the dividing line, the cross-sectional area of ​​the upper half of the mechanical stirring chamber 13 gradually increases from top to bottom, and the cross-sectional area of ​​the lower half of the mechanical stirring chamber 13 gradually decreases from top to bottom. In this way, the probability of the slurry flowing out along the inner side wall of the upper edge of the mechanical stirring chamber 13 can be reduced, the turbulent effect of the slurry in the mechanical stirring chamber 13 can be enhanced, and the turbulent intensity in the lower position of the upper area 42 above the mechanical stirring chamber 13 is low, which is conducive to improving the mineralization effect and efficiency.

[0091] In some embodiments, Figure 1 and Figure 2 As shown, the rotating shaft 21 has a gas supply channel 211 for supplying mineralized gas to the mechanical stirring chamber 13. It can be understood that the gas in the mechanical stirring chamber 13 can be supplied through the gas supply channel 211 in the rotating shaft 21, so that the rotating shaft 21 can not only drive the rotor 22 to rotate, but also provide mineralized gas for the mechanical stirring chamber 13, and the structure is compact, reducing the number of parts used.

[0092] In other examples, the mineralization device can also fill the mineralization gas into the mechanical stirring chamber 13 through a pipeline at the slurry inlet 11 of the mineralization tank 1. Of course, the gas can also be introduced into the mechanical stirring chamber 13 by self-absorption.

[0093] like Figures 1 to 4 As shown, the flotation device of the embodiment of the present invention comprises: a mineralization device, a tank body 4 and a driving device 35. The mineralization device is the mineralization device of the embodiment of the present invention. The mineralization device is arranged in the tank body 4, and the driving device 35 is arranged above the tank body 4 and connected to the rotating shaft 21 of the mineralization device to drive the rotating shaft 21 to rotate.

[0094] The flotation equipment of the embodiment of the present invention can form a strong turbulent flow field in the mechanical stirring chamber 13, reduce the weak mineralization area, improve the mineralization effect, and reduce the local wear of the mineralization tank 1.

[0095] In some embodiments, the flotation equipment further includes an aeration device 5, and the tank body 4 has an upper area 42 and a column selection area, the upper area 42 is located above the mineralization tank 1, and the column selection area includes a lower area 41 and a connecting area 43, the lower area 41 is located below the mineralization tank 1, and the connecting area 43 is located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank body 4, and the aeration device 5 is connected to the lower area 41, and is used to fill gas into the lower area 41, so as to column select the ore pulp entering the column selection area from the mechanical stirring chamber 13 in the column selection area, so that the flotation equipment of the embodiment of the present invention realizes the dual functions of the flotation machine and the flotation column, and improves the flotation effect.

[0096] It can be understood that the mineralized foam gathers in the upper area 42, and the lower area 41 is used for column selection. The mineralized bubbles in the slurry discharged from the mechanical stirring chamber 13 enter the upper area 42 upward, and the slurry containing other particles (target particles not attached to the bubbles, non-target mineral particles not attached to the bubbles) enters the lower area 41 through the connecting area 43. The gas filling device 5 is connected to the lower area 41 and is used to fill the lower area 41 with gas to perform column selection on the slurry entering the lower area 41. The driving device 35 is arranged above the tank body 4 and is connected to the rotating shaft 21 of the mineralization device to drive the rotating shaft 21 to rotate.

[0097] According to the flotation equipment of the embodiment of the present invention, mechanical stirring mineralization and column separation can be performed respectively through the mechanical stirring chamber in the mineralization tank and the lower area 41 in the tank body 4 located below the mechanical stirring chamber, thereby further improving the mineralization effect of the flotation equipment, and the combination of mechanical stirring mineralization and gas stirring mineralization improves the mineralization and flotation effects and improves the applicability to minerals.

[0098] When the flotation equipment mineralizes the slurry, the slurry is introduced into the mineralization tank 1 from bottom to top through the slurry inlet 11, and the rotor 22 rotates and stirs in the mechanical stirring chamber 13, and the air is broken into tiny bubbles, and the target particles are attached to the bubbles to form mineralized bubbles. Since in the longitudinal section of the mineralization tank 1, the peripheral wall of the mineralization tank 1 includes a plurality of line segments 14 connected in sequence, and the inclination angles of adjacent line segments 14 are different from each other, the slurry can better achieve the mineralization effect under the multi-directional reflection and rectification of the inner wall of the mineralization tank 1. Among them, the mineralized bubbles flow out from the slurry outlet 12 of the mineralization tank 1 and flow upward to the upper area 42. Particles not attached to the bubbles can flow out from the slurry outlet 12 of the mineralization tank 1, and under the action of gravity, enter the lower area 41 through the connecting area 43. Under the action of the inflation device 5, column selection can be carried out in the lower area 41. The mineralized bubbles after column selection flow upward to the upper area 42 through the connecting area 43. The tailings fall to the bottom of the tank body 4 under the action of gravity and are discharged to the outside of the tank body 4 from the discharge port 44.

[0099] Specifically, the driving device 35 may be a combination structure of a driving motor and a pulley assembly, that is, the driving motor drives the pulley assembly to rotate, and the pulley assembly drives the rotating shaft 21 to rotate synchronously.

[0100] Optionally, the flotation device according to the embodiment of the present invention may not include the aeration device 5, so that the flotation device performs flotation only by mechanical stirring.

[0101] like Figure 1 As shown, the bottom of the trough body 4 can be any shape such as a cone (funnel), a pyramid or a wedge, so as to guide the tailings, thereby improving the efficiency of the tailings being discharged from the discharge port 44.

[0102] Alternatively, if Figures 1 to 4 As shown, the flotation device further includes a plurality of guide plates 16, which are disposed in a communication area 43 between the outer wall of the mineralization tank 1 and the inner wall of the tank body 4, and the plurality of guide plates 16 are arranged at intervals along the circumference of the mineralization tank 1. The guide plates 16 can introduce the pulp containing particles not attached to the bubbles downward into the lower area 41, and the guide plates 16 can also introduce the mineralized bubbles after column selection upward into the upper area 42. The guide plates 16 can reduce the turbulence intensity in the communication area 43, which is beneficial to improving the mineralization and flotation effects of the flotation device.

[0103] In some embodiments, Fig.11 As shown, the flotation device further includes a froth scraping device 6, which includes a rotatable scraper 61, which is arranged in the tank body 4 and located in the froth area of ​​the upper part of the upper area 42. The scraper 61 is arc-shaped or involute-shaped, and the angle between the scraper 61 and the vertical plane is 0-30 degrees. It can be understood that the rotation axis of the scraper 61 is colinear with the axis of the tank body 4. When the scraper 61 rotates, the mineralized froth in the froth area can be scraped to collect and discharge the mineralized froth.

[0104] like Fig.11 As shown, since the scraper 61 is arc-shaped or involute-shaped, the extension path of the scraper 61 can be extended, the resistance of the scraper 61 during movement can be reduced, and the energy consumption of the scraper 61 during movement can be reduced. In addition, since the angle between the scraper 61 and the vertical plane can be 0-30 degrees, for example, the angle between the scraper 61 and the vertical plane is 1 degree, 10 degrees, 15 degrees, 20 degrees, 25 degrees, and 30 degrees. In this way, the scraper 61 can scrape the foam quickly, and the scraper 61 can scrape a thicker foam layer, which is conducive to improving the scraping efficiency of the scraper 61.

[0105] Optionally, the scrapers 61 are at least two layers and are arranged at intervals in the up-down direction, each layer has a plurality of scrapers 61, and the plurality of scrapers 61 in each layer are arranged at intervals along the circumference of the tank body 4. The flotation device of the embodiment of the present invention can improve the sorting effect of mineralized bubbles and improve the scraping efficiency of the scrapers 61 by providing at least two layers of scrapers 61.

[0106] For two adjacent layers of scrapers 61, the number of scrapers 61 in the upper layer can be greater than the number of scrapers 61 in the lower layer. It can be understood that the multiple scrapers 61 in the upper layer are arranged more densely, and the multiple scrapers 61 in the lower layer are arranged more sparsely. The sparse scrapers 61 in the lower layer can sort the mineralized foam in the upper area 42, and the dense scrapers 61 in the upper layer can increase the scraping amount of the mineralized foam when rotating, so as to scrape a thicker foam layer, which is conducive to improving the scraping efficiency of the scrapers 61.

[0107] Optionally, the axial position of the scraper 61 along the tank body 4 is adjustable so that the scraping layer of the scraper 61 is adapted to the ore grade, thereby improving the compatibility and applicability of the flotation device and expanding the application range of the flotation device. For example, the scraper 61 can be installed on the rotating shaft 21 in a clamping structure, and the position of the scraper 61 along the rotating shaft 21 is adjustable.

[0108] Optionally, the scraper 61 is provided with a third hollow hole (not shown) penetrating along the thickness direction thereof, that is, it is designed as a hollow structure, which can make the scraper 61 scrape bubbles more smoothly.

[0109] In some embodiments, Figure 3 As shown, the flotation equipment also includes a pre-mineralization device 36, which is used to pre-mineralize the pulp. The pre-mineralization device 36 is arranged outside the tank body 4 and is connected to the pulp inlet 11 of the mechanical stirring chamber 13 to supply the pre-mineralized pulp into the mechanical stirring chamber 13. The pre-mineralization device 36 can be a mechanical stirring mineralization type or an aerated mineralization type. It can be understood that when the flotation equipment is used, the pulp is first pre-mineralized by the pre-mineralization device 36, that is, a part of tiny bubbles are first formed in the pulp, so that a part of the target particles are attached to the bubbles, and then the pre-mineralized pulp is passed through the feed pipe 32 into the mineralization tank 1 for mechanical stirring mineralization flotation, and then enters the lower area 41 for column selection. This can further improve the mineralization effect, which is particularly beneficial to the flotation of fine particles.

[0110] Optionally, a turbulence suppression grid 37 is provided in the tank body 4, and the turbulence suppression grid 37 is located in the lower area 41 and adjacent to the upper area 42. It can be understood that the turbulence suppression grid 37 is provided at the upper side of the lower area 41 to reduce the turbulence intensity in the connecting area 43 and improve the flotation effect and efficiency of the flotation device.

[0111] In some embodiments, Figure 2 As shown, the turbulence suppression grid 37 may be located in the lower side of the upper region 42. The turbulence suppression grid 37 may suppress the turbulence intensity in the upper region 42 and improve the flotation effect.

[0112] Optionally, the position of the turbulence suppression grid 37 in the up and down direction is adjustable, so that the flotation equipment can adjust the turbulence suppression grid 37 to a suitable position according to different flotation minerals or flotation effects, so as to expand the application range of the flotation equipment and achieve better turbulence suppression effect.

[0113] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0114] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0115] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0117] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0118] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A mineralization device, characterized in that: include: A mineralization tank, wherein the mineralization tank has a mechanical stirring chamber, a slurry inlet is provided at the bottom of the mineralization tank for supplying slurry into the mechanical stirring chamber, and a slurry outlet is provided at the top of the mineralization tank for discharging the slurry after mechanical stirring, and in the longitudinal section of the mineralization tank, the peripheral wall of the mineralization tank includes a plurality of line segments connected in sequence, and the inclination angles of adjacent line segments are different from each other; The rotor assembly comprises a rotating shaft and a rotor, wherein the lower end of the rotating shaft extends into the mechanical stirring chamber, and the rotor is located in the mechanical stirring chamber and is installed at the lower end of the rotating shaft so as to be driven to rotate by the rotating shaft to perform mechanical stirring in the mechanical stirring chamber.

2. The mineralization device according to claim 1, characterized in that: The number of the line segments is proportional to the area of ​​the pulp outlet.

3. The mineralization device according to claim 1, characterized in that: The inclination angle between the line segment and the horizontal plane is α, wherein 10°≤α<90°.

4. The mineralization device according to claim 1, characterized in that: The rotor is an impeller, which includes a hub, a wheel disc, a top plate, a bottom plate and blades, wherein the blades include upper blades and lower blades, the hub is mounted on the lower end of the rotating shaft, the wheel disc, the top plate and the bottom plate are mounted on the hub and the wheel disc is located between the top plate and the bottom plate, there are multiple upper blades and multiple lower blades, multiple upper blades are arranged between the upper surface of the wheel disc and the top plate and are arranged at intervals along the circumference of the wheel disc, multiple lower blades are arranged between the lower surface of the wheel disc and the wheel disc and are arranged at intervals along the circumference of the wheel disc, and the upper blades and the lower blades correspond to each other one by one or are staggered along the circumference of the wheel disc.

5. The mineralization device according to claim 1, characterized in that: The rotor includes a wheel disc and a plurality of blades, wherein the wheel disc is mounted at the lower end of the rotating shaft, and the plurality of blades are arranged at intervals along the circumference of the wheel disc on the outer peripheral edge of the wheel disc. In the longitudinal section of the rotor, the contour line of the outer side surface of the blade includes a vertical segment and an arc segment, and the upper end of the arc segment is connected to the lower end of the vertical segment and gradually extends inward.

6. The mineralization device according to claim 4 or 5, characterized in that: The blade is provided with a first hollow hole which penetrates along the thickness direction thereof.

7. The mineralization device according to claim 1, characterized in that: A plurality of turbulence reinforcement plates are arranged in the mechanical stirring chamber, and the plurality of turbulence reinforcement plates are arranged at intervals along the circumference of the mechanical stirring chamber, and the turbulence reinforcement plates are connected to the inner wall of the mechanical stirring chamber.

8. The mineralization device according to claim 7, characterized in that: The rotor is an impeller, the outer diameter of the impeller is A, and the gap between the outer edge of the impeller and the inner edge of the turbulence reinforcement plate in the radial direction of the rotating shaft is B, wherein 0.03A≤B≤0.2A.

9. The mineralization device according to claim 8, characterized in that: The turbulence reinforcement plate is provided with a second hollow hole penetrating along the thickness direction thereof; And / or, the upper end surface of the turbulence reinforcement plate is flush with the upper end surface of the mineralization trough, and the lower end surface of the turbulence reinforcement plate is flush with the lower end surface of the mineralization trough.

10. The mineralization device according to claim 1, characterized in that: The mineralization device also includes a feed box, which is arranged below the mineralization tank. The feed box has a feed port suitable for being connected to a feed pipe for supplying slurry into the feed box, and a discharge port connected to the slurry inlet for supplying the slurry in the feed box to the mechanical stirring chamber. The feed box and the mineralization tank are formed separately or integrally.

11. The mineralization device according to claim 1, characterized in that: The mineralization device further comprises an anti-settling assembly, wherein the anti-settling assembly comprises at least one of a rake and a spray gun. The rake frame is arranged at the bottom of the mechanical stirring chamber and below the rotor, and the rake frame is driven to rotate by the rotating shaft; the spraying end of the spray gun extends into the bottom of the mechanical stirring chamber, and is used to spray water and / or gas to the bottom of the mechanical stirring chamber.

12. The mineralization device according to claim 1, characterized in that The cross-sectional area of ​​the mechanical stirring chamber gradually decreases from top to bottom in the longitudinal direction of the mineralization tank, or the cross-sectional area of ​​the mechanical stirring chamber gradually increases from both ends of the mechanical stirring chamber toward the middle of the mechanical stirring chamber in the longitudinal direction of the mineralization tank.

13. The mineralization device according to claim 1, characterized in that The rotating shaft is provided with an air supply channel for supplying air for mechanical stirring mineralization into the mechanical stirring chamber.

14. A flotation device, characterized in that: include: A mineralization device, wherein the mineralization device is the mineralization device according to any one of claims 1 to 13; A tank body, wherein the mineralization device is arranged in the tank body; A driving device is arranged above the tank body and connected to the rotating shaft of the mineralization device to drive the rotating shaft to rotate.

15. The flotation device according to claim 14, characterized in that The flotation equipment also includes an aeration device. The cell body is provided with an upper region and a column selection region. The upper region is located above the mineralization cell. The column selection region includes a lower region and a communication region. The lower region is located below the mineralization cell. The communication region is located between the outer peripheral wall of the mineralization cell and the inner peripheral wall of the cell body. The aeration device is connected to the lower region and is used to fill gas into the lower region so as to column select the ore pulp entering the column selection region from the mechanical stirring chamber in the column selection region.

16. The flotation device according to claim 15, characterized in that The flotation equipment further comprises a plurality of guide plates, which are arranged in the communication area and are spaced apart along the circumference of the mineralization tank.

17. The flotation device according to claim 15, characterized in that The flotation equipment also includes a bubble scraping device, which includes a rotatable scraper. The scraper is arranged in the tank body and located in the foam area above the upper area. The scraper is arc-shaped or involute-shaped, and the angle between the scraper and the vertical plane is 0-30 degrees.

18. The flotation device according to claim 17, characterized in that The scrapers are at least two layers and are arranged at intervals in the up and down directions. Each layer has multiple scrapers, and the multiple scrapers in each layer are arranged at intervals along the circumference of the trough body. Between two adjacent layers of scrapers, the number of scrapers in the upper layer is greater than the number of scrapers in the lower layer.

19. The flotation device according to claim 17, characterized in that The scraper is adjustable in position along the axial direction of the trough body; and / or, the scraper is provided with a third hollow hole penetrating along the thickness direction thereof.

20. The flotation device according to any one of claims 14 to 19, characterized in that The flotation equipment also includes a pre-mineralization device, which is used to pre-mineralize the ore pulp. The pre-mineralization device is arranged outside the tank body and is connected to the slurry inlet of the mechanical stirring chamber to supply the pre-mineralized ore pulp into the mechanical stirring chamber. The pre-mineralization device is a mechanical stirring mineralization type or an aerated mineralization type.

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