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 to 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 utility model relates to the technical field of flotation, specifically, a mineralization device and a flotation equipment. BACKGROUND

[0002] Flotation is a widely used mineral processing method. When using a flotation device for flotation, ore pulp is fed into a flotation tank and mechanically stirred or aerated for mineralization. After mineralization, target particles selectively adhere to bubbles to form mineralized bubbles, which float upwards. Other particles that do not adhere to the bubbles are discharged from the bottom of the flotation tank with the ore pulp, thereby achieving the purpose of separating minerals.

[0003] In related technology, a mechanical stirring chamber is provided in the flotation device, and ore pulp and air are fed into the mechanical stirring chamber from the outside for mineralization under the action of mechanical stirring. However, the mechanical stirring chamber in related technology has the problems of poor mineralization effect and easy local wear. SUMMARY

[0004] The utility model aims to at least solve one of the technical problems in related technology to some extent.

[0005] Therefore, the utility model embodiment provides a mineralization device with improved mineralization effect.

[0006] The utility model embodiment further provides a flotation device.

[0007] The mineralization device of the utility model embodiment comprises a mineralization tank, a mechanical stirring chamber in the mineralization tank, an ore pulp inlet at the bottom of the mineralization tank for supplying ore pulp into the mechanical stirring chamber, an ore pulp outlet at the top of the mineralization tank for discharging mechanically stirred ore pulp, a plurality of line segments in the longitudinal section of the mineralization tank, and different angles between adjacent line segments; a rotor assembly comprising a shaft and a rotor, the lower end of the shaft extending into the mechanical stirring chamber, the rotor being located in the mechanical stirring chamber and mounted on the lower end of the shaft to be driven to rotate by the shaft for mechanical stirring in the mechanical stirring chamber.

[0008] The mineralization device of the utility model embodiment, through the pulp inlet, the ore pulp is passed into the mineralization groove along the direction from bottom to top, the rotor rotates and stirs in the mechanical stirring cavity, the air is scattered into small bubbles, the target particles are attached to the bubbles to form mineralization bubbles, the peripheral wall of the mineralization groove includes a plurality of line segments connected in turn, therefore, the reflection, rectification and turbulent effect of the inner wall of the mineralization groove on the ore pulp and bubbles are enhanced, the mineralization effect is improved, and because the inclination angles of the adjacent line segments are different from each other, that is, the inclination angles of different parts of the peripheral wall of the mineralization groove are different, the ore pulp angles reflected by different peripheral wall parts are different, compared with the smooth peripheral wall such as parabolic type, the effect of mutual collision of the ore pulp streams reflected by the peripheral wall parts with different inclination angles in the mineralization groove is enhanced, the turbulent flow generated by the mineralization groove is further enhanced, the mineralization weak area is reduced, the generation of bubbles and the probability of attachment with target particles are further improved, thereby the mineralization effect is improved, and the local wear of the mineralization groove can be reduced.

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

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

[0011] In some embodiments, the rotor is an impeller, the impeller includes a hub, a disc, a top plate, a bottom plate and blades, the blades include upper blades and lower blades, the hub is installed at the lower end of the rotating shaft, the disc, the top plate and the bottom plate are installed on the hub and the disc is located between the top plate and the bottom plate, the upper blades and the lower blades are both multiple, multiple upper blades are arranged between the upper surface of the disc and the top plate and are spaced along the circumference of the disc, multiple lower blades are arranged between the lower surface of the disc and the disc and are spaced along the circumference of the disc, the upper blades and the lower blades are one-to-one corresponding or staggered along the circumference of the disc.

[0012] In some embodiments, the rotor includes a disc and multiple blades, the disc is installed at the lower end of the rotating shaft, multiple blades are spaced along the circumference of the disc and are arranged at the outer circumferential edge of the disc, in the longitudinal section of the rotor, the profile line of the outer side surface of the blade includes a vertical segment and an arc segment, the upper end of the arc segment is connected with the lower end of the vertical segment and gradually extends inward.

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

[0014] In some embodiments, the mechanical stirring cavity is provided with a plurality of turbulence enhancement plates, the plurality of turbulence enhancement plates are arranged along the circumference of the mechanical stirring cavity, and the turbulence enhancement plates are connected to the inner wall of the mechanical stirring cavity.

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

[0016] In some embodiments, the turbulence enhancement plate is provided with a second hollow hole penetrating through the thickness direction thereof; and / or, the upper end surface of the turbulence enhancement plate is flush with the upper end surface of the mineralization tank, and the lower end surface of the turbulence enhancement plate is flush with the lower end surface of the mineralization tank.

[0017] In some embodiments, the mineralization device further comprises a feed tank, the feed tank is arranged below the mineralization tank, the feed tank is provided with a feed inlet adapted to be connected to a feed pipe for feeding ore pulp into the feed tank, and a discharge outlet in communication with the pulp inlet for feeding the ore pulp in the feed tank into the mechanical stirring cavity, and the feed tank is integrally formed with the mineralization tank or separately formed.

[0018] In some embodiments, the mineralization device further comprises an anti-settling assembly, the anti-settling assembly comprises at least one of a rake frame and a spray gun, wherein the rake frame is arranged at the bottom of the mechanical stirring cavity and below the rotor, and the rake frame is driven to rotate by the rotating shaft; the spray gun has a spray end extending into the bottom of the mechanical stirring cavity for spraying water and / or gas to the bottom of the mechanical stirring cavity.

[0019] In some embodiments, the cross-sectional area of the mechanical stirring cavity gradually decreases in the upward direction along the longitudinal direction of the mineralization tank, or the cross-sectional area of the mechanical stirring cavity gradually increases from both ends of the mechanical stirring cavity towards the middle of the mechanical stirring cavity along the longitudinal direction of the mineralization tank.

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

[0021] According to another embodiment of the flotation device of the present application, comprising: a mineralization device, the mineralization device is any one of the mineralization devices described in the embodiments of the present application; a tank body, the mineralization device is arranged in the tank body; a driving device, the 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.

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

[0023] In some embodiments, the flotation equipment further comprises an aeration device, the tank body has an upper area and a column selection area, the upper area is located above the mineralization tank, the column selection area comprises a lower area and a communication area, the lower area is located below the mineralization tank, the communication area is located between the peripheral wall of the mineralization tank and the inner peripheral wall of the tank body, the aeration device is in communication with the lower area and is used for filling gas into the lower area to perform column selection on the ore pulp entering the column selection area from the mechanical stirring cavity.

[0024] In some embodiments, the flotation equipment further comprises a plurality of flow guide plates, the flow guide plates are arranged in the communication area, and the plurality of flow guide plates are arranged in a circumferential direction of the mineralization tank.

[0025] In some embodiments, the flotation equipment further comprises a bubble scraping device, the bubble scraping device comprises a rotatable scraper, the scraper is arranged in the tank body and located in a foam area above the upper area, the scraper is in an arc shape or an involute shape, and an included angle between the scraper and a vertical plane is 0-30 degrees.

[0026] In some embodiments, the scraper is at least two layers and arranged in a vertical direction, each layer of the scraper is a plurality of scrapers, the plurality of scrapers in each layer are arranged in a circumferential direction of the tank body, and the number of the scrapers in an upper layer is greater than that in a lower layer.

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

[0028] In some embodiments, the flotation equipment further comprises a pre-mineralization device, the pre-mineralization device is used for pre-mineralization of ore pulp, the pre-mineralization device is arranged outside the tank body and in communication with a pulp inlet of the mechanical stirring cavity to supply pre-mineralized ore pulp into the mechanical stirring cavity, and the pre-mineralization device is in a mechanical stirring mineralization type or an aeration mineralization type. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of the flotation equipment according to an embodiment of the present application.

[0030] Figure 2 is a schematic view of the flotation equipment according to another embodiment of the present application.

[0031] Figure 3 is a schematic view of the flotation equipment according to still another embodiment of the present application.

[0032] Figure 4 is the longitudinal section schematic view of the mineralization device of the embodiment of the utility model.

[0033] Figure 5 is the three-dimensional schematic view of the mineralization device of the embodiment of the utility model.

[0034] Figure 6 is the partial section schematic view of the mineralization device of the embodiment of the utility model.

[0035] Figure 7 is the schematic view of the rotor of the mineralization device of the embodiment of the utility model.

[0036] Figure 8 is the partial section schematic view of the rotor of the mineralization device of the embodiment of the utility model.

[0037] Figure 9 is the schematic view of the rotor of the mineralization device of another embodiment of the utility model.

[0038] Figure 10 is the schematic view of the turbulence intensifier plate of the mineralization device of the embodiment of the utility model.

[0039] Figure 11 is the overhead schematic view of the tank body and the bubble scraping device of the flotation equipment of the embodiment of the utility model.

[0040] Figure 12 is the schematic view of the rake frame of the mineralization device of the embodiment of the utility model.

[0041] Reference signs:

[0042] 1, mineralization tank;11, pulp inlet;12, pulp outlet;13, mechanical stirring cavity;14, line segment;15, turbulence intensifier 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, air jet channel;223, blade;2231, upper blade;2232, lower blade;2233, first hollow hole;2234, vertical segment;2235, arc segment;224, top plate;225, bottom plate;

[0044] 31, cover plate;311, flow-through hole;32, feed pipe;33, feed box;34, anti-settling assembly;341, rake frame;342, spray gun;35, driving device;36, pre-mineralization device;37, turbulence suppression grid;

[0045] 4, tank body;41, lower region;42, upper region;43, communication region;44, discharge port;

[0046] 5. Inflation device;

[0047] 6. Bubble scraping device; 61. Scraper. Detailed Implementation

[0048] The embodiments of this utility model are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0049] The following is a reference appendix. Figures 1 to 12 This invention describes a mineralization apparatus and a flotation device having the mineralization apparatus according to embodiments of the present invention.

[0050] like Figures 1 to 6 As shown, the mineralization device of this utility model embodiment includes: a mineralization tank 1 and a rotor assembly 2. The mineralization tank 1 has a mechanical stirring chamber 13, which is used for mineralization, referred to here as mechanical stirring mineralization. That is, under the mechanical stirring action of the rotor assembly 2, the target particles in the slurry and the air supplied into the mechanical stirring chamber 13 cause the target particles to adhere to the air bubbles to form mineralization bubbles, thereby realizing mechanical stirring flotation. In other words, the flotation function of the flotation equipment is realized.

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

[0052] Within the longitudinal section of mineralization trough 1, i.e. along the axial direction of mineralization trough 3 ( Figure 3 Within the cross-section of the mineralization tank (in the vertical direction), the peripheral wall of the mineralization tank 1 comprises multiple 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 smooth parabolic wall, but is composed of multiple straight line segments with different inclination angles. Here, it is important to understand that the peripheral wall of the mineralization tank comprises multiple line segments connected in sequence, meaning that the inner peripheral wall surface of the mineralization tank (i.e., the outer peripheral surface of the mechanical stirring chamber) is composed of multiple line segments connected in sequence, rather than a smooth surface such as a parabola. The outer peripheral wall surface of the mineralization tank may or may not be parallel to the inner peripheral wall surface.

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

[0054] The mineralization device of the embodiment of the utility model, through the pulp inlet 11, the ore pulp is passed into the mineralization groove 1 along the direction from bottom to top, the rotor 22 rotates and stirs in the mechanical stirring cavity 13, the air is scattered into tiny bubbles, and the target particles are attached to the bubbles to form mineralized bubbles. Since in the longitudinal section of the mineralization groove 1, the peripheral wall of the mineralization groove 1 comprises a plurality of line segments 14 connected in sequence, therefore, the reflection, rectification and surging effect of the inner wall of the mineralization groove 1 on the ore pulp and the bubbles is enhanced, the mineralization and flotation effect is improved, and since the inclination angles of the adjacent line segments 14 are different from each other, that is, the inclination angles of different parts of the peripheral wall of the mineralization groove 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 ore pulp streams reflected by the peripheral wall parts with different inclination angles and between the ore pulp and the bubbles in the mineralization groove 1 is enhanced, thereby the turbulence generated by the mineralization groove 1 is further enhanced, the mineralization weak area is reduced, the generation of bubbles and the probability of attachment to the target particles are further improved, thereby the mineralization and flotation effect is improved, and the local wear of the mineralization groove 1 can be reduced. Therefore, the mineralization device of the embodiment of the utility model can form a strong turbulence flow field in the mechanical stirring cavity 13, reduce the mineralization weak area, improve the mineralization and flotation effect, reduce the local wear of the mineralization groove 1, and adapt to different ore pulps by changing the inclination angles of different peripheral wall parts, thereby the applicability is improved.

[0055] It can be understood that mineralization refers to the selective adhesion process of target particles and bubbles, after mineralization, the ore pulp comprises mineralized bubbles (the mineralized bubbles can be called mineralized froth after aggregation, and in the following description, the mineralized bubbles and the mineralized froth can be used interchangeably) and other particles not attached to the bubbles, the mineralized bubbles are target particles attached to the bubbles, and here, the target particles attached to the bubbles can also be called mineralized particles, and the other particles can comprise target particles not attached to the bubbles, non-target mineral particles not attached to the bubbles and tailing particles.

[0056] Compared with the related art, for example, compared with the mechanical stirring mineralization space with a parabolic side wall, the mineralization device of the embodiment of the utility model changes the shape of the peripheral side wall of the mineralization space, thereby the turbulence intensity is improved, the stirring effect is strengthened, and the mineralization and flotation effect is improved.

[0057] For example, as shown in FIG. 1, the mineralization groove 1 comprises a parabolic peripheral wall, and the mineralization groove 1 is a parabolic mineralization groove. Figures 1 to 4As shown, the cross-sectional area of the mechanical stirring cavity 13 gradually decreases along the direction from top to bottom, and the mineralization tank 1 can have a generally segmented basin structure. The segmented basin mechanical stirring cavity 13 can provide multiple directions of reflection for the rotor-stirred pulp and bubbles, thereby enhancing the pulp flow collision effect, increasing the turbulence intensity, and improving the mineralization and flotation effect.

[0058] Compared with the mineralization tank 1 with a parabolic structure in the related art, the mineralization tank 1 of the mineralization device in the embodiment of the present application is easier to process and obtain multiple reflection focal points. In other words, the mineralization tank 1 in the embodiment of the present application is easier to achieve multiple reflection focal points close to the theoretical design, thereby improving the actual application effect. For mineralization tanks 1 of different sizes, by adjusting the number and inclination angle of the line segments 14 in the longitudinal cross section of the mineralization tank 1, a scheme close to the theoretical focal point can still be obtained, and the theoretical flow field model can be more easily realized, that is, the flow is folded and surges in multiple directions along the inner wall of the mineralization tank 1, thereby forming a strong turbulent flow field. The mineralization tank 1 in the embodiment of the present application can strengthen the overall mineralization and reduce the mineralization weak area in the mechanical stirring cavity 13, thereby reducing the situation of local excessive wear of the mineralization tank 1.

[0059] For example, for relatively coarse 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 enable the particles to participate in the circulation and mixed mineralization multiple times, reduce the falling of coarse particles, and avoid the phenomenon of pulp sedimentation and pipeline blockage.

[0060] The angle of the edge of the pulp outlet 12 of the mineralization tank 1 in the embodiment of the present application can be adaptively adjusted to avoid the situation that the angle is too large and the pulp is splashed out of the mineralization tank 1, thereby being beneficial to improving the mineralization efficiency and effect of the mineralization tank 1.

[0061] Preferably, as shown in Figure 1 and Figure 4 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°, or 80°. Alternatively, the inclination angle α can be close to and less than 90°. The inventors of the embodiment of the present application have found through research and verified through experiments that when the inclination angle α between the line segment 14 and the horizontal plane is in the above angle range, the mineral material can be better involved in the circulation and mixed mineralization, the turbulence effect generated in the mineralization tank 1 can be enhanced, and the pulp can be prevented from being splashed out of the mineralization tank 1 along the side wall of the mineralization tank 1, thereby being beneficial 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 pulp outlet 12. It can be understood that the larger the area of the pulp outlet 12, the more the number of line segments 14, thereby the reflection and rectification effects of the mineralization tank 1 can be improved, so as to form a strong turbulent flow field. When designing the mineralization tank 1, the structure of the mineralization tank 1 can be adjusted according to the increase of the mineralization tank 1 and the change of the mineral type, so as to meet the mineralization requirements of the mineralization device and improve the mineralization effect.

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

[0064] The hub 221 is installed at the lower end of the rotating shaft 21, the disc 222, the top plate 224, and the bottom plate 225 are installed on the hub 221, and the disc 222 is located between the top plate 224 and the bottom plate 225. The upper blades 2231 and the lower blades 2232 are both multiple, the multiple upper blades 2231 are arranged between the upper surface of the disc 222 and the top plate 224 and are spaced along the circumference of the disc 222. The multiple lower blades 2232 are arranged between the lower surface of the disc 222 and the disc 222 and are spaced along the circumference of the disc 222. The upper blades 2231 and the lower blades 2232 correspond one by one or are staggered along the circumference of the 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 disc 222 and the lower blades 2232 on the lower side of the disc 222 rotate at the same time, which can enhance the pulp suction capacity of the impeller (the ability to suck the pulp from the pulp inlet 11 into the mechanical stirring chamber 13), on the other hand, it can enhance the strength of the internal pulp circulation, improve the mineralization effect of the pulp, and enhance the selectivity in the flotation process.

[0066] For example, the upper blades 2231 and the lower blades 2232 are distributed in a radial and radial manner, and the number of the upper blades 2231 and the lower blades 2232 is between 4-16, and is uniformly arranged. It should be noted that the number of the upper blades 2231 and the lower blades 2232 can be equal or not equal, and the embodiments of the present application do not limit this.

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

[0068] For example, the outer periphery of the top plate 224 is substantially the same in size as the outer periphery formed by the plurality of upper blades 2231. The outer periphery of the bottom plate 225 is substantially the same in size as the outer periphery formed by the plurality of lower blades 2232.

[0069] In another example, such as Figure 9 As shown, rotor 22 is located inside mechanical stirring chamber 13. Rotor 22 includes a disk 222 and multiple blades 223. The disk 222 is mounted on the lower end of rotating shaft 21. The multiple blades 223 are spaced apart along the circumference of the disk 222 on its outer periphery. In the longitudinal section of rotor 22, the outline of the outer surface of blade 223 includes a vertical section 2234 and an arc-shaped section 2235. The upper end of the arc-shaped section 2235 connects to the upper end of the vertical section 2234 and gradually extends inward. Thus, when rotor 22 rotates, the stirred slurry area flips upward along the arc-shaped section. By setting blades 223 to the above structure, the mineralization device of this embodiment can improve and enhance the turbulence effect of slurry in mechanical stirring chamber 13, 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] Optionally, such as Figure 9 As shown, the rotating shaft 21 has an air supply channel 211 for supplying air for mechanical stirring and mineralization into the mechanical stirring chamber 13. The wheel 222 has an air jet channel 2220 communicating with the air supply channel 211 in the rotating shaft 21. The air jet outlets of the air jet channel 2220 are formed on the outer circumferential surface of the wheel 222 and are arranged at intervals along the circumference of the wheel 222. Because the air jet outlets of the air jet channel 2220 in the wheel 222 are formed on the outer circumferential surface of the wheel 222 and are arranged at intervals along the circumference of the wheel 222, the mixing degree of the slurry and the air bubbles can be improved, thereby improving the mineralization effect of the mineralization component.

[0071] Optionally, such as Figure 9 As shown, the blade 223 has a first perforated hole 2233 extending along its thickness direction. By designing the blade 223 of the mineralization device in this embodiment of the invention as a perforated structure, it is easier to generate microbubbles when the impeller rotates, resulting in better mixing of the slurry and bubbles, which is more conducive to the mineralization of fine-grained minerals.

[0072] For example, the first perforation 2233 can be a strip-shaped hole or a round hole. The strip-shaped hole can extend obliquely, horizontally, or vertically. There can be multiple first perforations 2233, which are arranged discretely.

[0073] In some embodiments, such as Figure 4 and Figure 6As shown, a plurality of turbulence enhancement plates 15 can be arranged in the mechanical stirring cavity 13, and the plurality of turbulence enhancement plates 15 are arranged along the circumference of the mechanical stirring cavity 13 and are in contact with the inner wall of the mechanical stirring cavity 13 and surround the rotor 22. When the rotor 22 rotates, the plurality of turbulence enhancement plates 15 are arranged along the circumference of the mechanical stirring cavity 13, so that the ore pulp flowing along the circumference in the mechanical stirring cavity 13 is blocked and collided by the plurality of turbulence enhancement plates 15, the turbulence effect of the ore pulp in the mechanical stirring cavity 13 is improved, and the mineralization effect is further improved.

[0074] Optionally, as shown in 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 side of the impeller and the inner side of the turbulence enhancement 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 side of the turbulence enhancement plate 15 is 3%-20% of the diameter of the impeller. For example, B is equal to 0.03A, 0.08A, 0.12A, 0.15A, or 0.2A. The inventors of the present embodiment have found through research and experiments that when the impeller and the turbulence enhancement plate 15 adopt the above structural parameters, the air is more likely to generate small bubbles during the mineralization of the ore pulp, and the circulating mixing effect is better, which is more conducive to the flotation of fine particles.

[0075] Optionally, as shown in Figure 10 As shown, the turbulence enhancement plate 15 is provided with a second hollow hole 151 penetrating along the thickness direction thereof. The turbulence enhancement plate 15 of the mineralization device in the present embodiment is designed to be a hollow structure, so that small bubbles are more likely to be generated when the impeller rotates, the circulating mixing effect of the ore pulp and the bubbles is better, which is more conducive to the flotation of fine particles, the resistance of the ore pulp during flow is smaller, and the capacity dissipation is less.

[0076] The opening size of the second hollow hole 151 can be designed according to the properties of the ore, which is not limited in the present embodiment. For example, the second hollow hole 151 can be a strip-shaped hole or a circular hole. The strip-shaped hole can extend obliquely, horizontally or vertically. The second hollow hole 151 can be a plurality of second hollow holes 151, and the plurality of second hollow holes 151 are arranged discretely.

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

[0078] In some embodiments, the turbulence enhancement plate 15 can be divided into a plurality of segments in the radial direction of the mineralization tank 1, and the plurality of segments can be connected into one body or can be segmented and distributed at intervals, and the plurality of turbulence enhancement plates 15 can be aligned in the radial direction or can be staggered obliquely in the radial direction. According to the characteristics of the ore, the structure of the turbulence enhancement plate 15 can be conveniently selected, and the applicability is improved.

[0079] Optionally, as shown in Figure 4 andFigure 6 As shown, the upper end surface of the turbulence intensifier plate 15 is flush with the upper end surface of the mineralization tank 1, and the lower end surface of the turbulence intensifier plate 15 is flush with the lower end surface of the mineralization tank 1. Since the lower end surface of the turbulence intensifier plate 15 is flush with the lower end surface of the mineralization tank 1, the mineral slurry at the bottom of the mechanical stirring cavity 13 can have a good turbulence effect. The upper end surface of the turbulence intensifier plate 15 is flush with the upper end surface of the mineralization tank 1, which can reduce the influence of the turbulence in the mechanical stirring cavity 13 on the lower side of the upper region 42 above the mineralization tank 1, and is conducive to the upward movement of the mineralization bubbles.

[0080] In the related art, mineralization is carried out in the mineralization tank of the flotation device, and the mineral slurry is introduced from the outside into the mineralization tank, and mineralization is carried out under the action of air supply and mechanical stirring. However, the inventors have found that due to the large space in the mineralization tank, the mineralization and flotation effect is poor and the flotation efficiency is low. Therefore, the related art proposes to set a parabolic-shaped basin-shaped reflection bottom in the mineralization tank, and the mineral slurry and the gas are supplied into the reflection bottom, and mechanical stirring is carried out in the reflection bottom to realize bubble mineralization. The reflection bottom reflects the mineral slurry containing mineralization bubbles out of the reflection bottom to improve the flotation efficiency, but the inventors have found that there is still a problem of poor mineralization and flotation effect and low efficiency. The inventors have found through research that compared with mineralization in the mineralization tank, the reflection action of the reflection bottom can improve the flotation efficiency to a certain extent, but since the top of the reflection bottom is open, the stirred mineral slurry is quickly discharged from the reflection bottom under the reflection action 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 effect and improve the flotation efficiency, the inventors propose a limited mineralization scheme. The so-called limited mineralization refers to mineralization in a relatively closed and relatively small limited space compared with the related art. The limited space can also be referred to as a limited space, a limited area, a limited area, or a limited area, simply referred to as a limited area. For example, the limited area is smaller and relatively closed compared with the mineralization tank cavity in the related art, and is relatively closed compared with the open parabolic-shaped reflection bottom in the related art. During the mineralization process, the mineral slurry and the gas are introduced into the limited space, and mechanical stirring is carried out in the limited space, so that the air can form more bubbles. The bubbles and the target particles in the mineral slurry repeatedly reflect, stir and collide with each other in the limited space, thereby increasing the contact time, contact frequency and collision frequency of the bubbles and the target particles, thereby improving the mineralization and flotation effect and further improving the efficiency. Therefore, the mineralization carried out in the limited space in the utility model can be referred to as limited mineralization.

[0082] Specifically, as shown in FIG. 1, the mineralization tank 1 is provided with a mechanical stirring cavity 13, and the mechanical stirring cavity 13 is provided with a plurality of turbulence intensifier plates 15. Figure 1As shown, the mineralization device further comprises a cover plate 31 arranged above the mineralization tank 1, wherein the cover plate 31 is opposite to the pulp outlet 12 and spaced apart from the top surface of the mineralization tank 1 so that the mineralized pulp flows out. It can be understood that the cover plate 31 and the mineralization tank 1 define a limited mineralization area including the mechanical stirring cavity 13. The mineralization device of the embodiment of the present application improves the sealing of the mechanical stirring cavity 13 by arranging the cover plate 31 above the mineralization tank 1, which can prolong the time of the mineralized pulp reflecting, rectifying and surging in the mechanical stirring cavity 13, so as to improve the contact time, contact times and impact times of the bubbles and target particles, thereby improving the mineralization and flotation effect. Moreover, 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 cavity 13 lower, which is beneficial to the upward movement of the mineralized bubbles.

[0083] In other words, the mineralized pulp in the relatively closed and relatively small area of the mineralization tank 1 with the cover plate 31 is more turbulent, the bubbles are smaller, and the bubbles are more likely to capture fine particles. The mineralized bubbles flow more smoothly on the lower side of the upper area 42 above the mechanical stirring cavity 13, the attached particles are more stable, and are 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 mineral slurry, which is not limited in the embodiment of the present application.

[0085] In other examples, as shown in FIG. 4, Figure 4 As shown, the cover plate 31 covers the pulp outlet 12 and is provided with a flow hole 311 for communicating the mechanical stirring cavity 13 and the outside of the mechanical stirring cavity 13. The mineralized pulp containing mineralized bubbles in the mechanical stirring cavity 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 cavity 13. The mineralization device of the embodiment of the present application improves the sealing of the mechanical stirring cavity 13 by arranging the cover plate 31 above the mineralization tank 1, which can prolong the time of the mineralized pulp reflecting, rectifying and surging in the mechanical stirring cavity 13, so as to improve the contact time, contact and impact times of the bubbles and target particles, thereby improving the mineralization and flotation effect. Moreover, 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 cavity 13 lower, which is beneficial to the upward movement of the mineralized bubbles.

[0086] In other words, the mineralized pulp in the relatively closed and relatively small area of the mineralization tank 1 with the cover plate 31 is more turbulent, the bubbles are smaller, and the bubbles are more likely to capture fine particles. The mineralized bubbles flow more smoothly on the lower side of the upper area 42 above the mechanical stirring cavity 13, the attached particles are more stable, and are not easy to fall off.

[0087] In some embodiments, as shown in Figure 4 The mineralization device further comprises a feeding tank 33 arranged below the mineralization tank 1, the feeding tank 33 has a feeding port connected with the feeding pipe 32 to feed the slurry into the feeding tank 33, and a discharge port communicated with the slurry inlet 11 to feed the slurry in the feeding tank 33 into the mechanical stirring cavity 13. The feeding tank 33 is integrally formed with the mineralization tank 1 or separately formed. It can be understood that the slurry is first fed into the feeding tank 33 by the feeding pipe 32, and then the slurry enters the mineralization tank 1 through the feeding tank 33. The mineralization device of the embodiment of the present application 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 turbulent effect of the reinforced slurry in the mechanical stirring cavity 13, enhancing the capturing effect of the gas bubbles on the target particles, and enhancing the strength of the internal slurry circulation.

[0088] In some embodiments, as shown in Figure 4 and Figure 12 The mineralization device further comprises an anti-settling assembly 34, the anti-settling assembly 34 comprises at least one of a rake frame 341 and a spray gun 342, wherein the rake frame 341 is arranged at the bottom of the mechanical stirring cavity 13 and below the rotor 22, and the rake frame 341 is driven to rotate by the rotating shaft 21. The spray gun 342 has a spray end extending into the bottom of the mechanical stirring cavity 13 for spraying water and / or gas, preferably air, to the bottom of the mechanical stirring cavity 13.

[0089] When the anti-settling assembly 34 is in the form of the rake frame 341, the rake frame 341 is arranged at the bottom of the mechanical stirring cavity 13 and below the rotor 22, and the rake frame 341 is driven to rotate by the rotating shaft 21. When the anti-settling assembly 34 is in the form of the spray gun 342, the spray end of the spray gun 342 extends into the bottom of the mechanical stirring cavity 13 for spraying water and / or gas to the bottom of the mechanical stirring cavity 13. The rake frame 341 and the spray gun 342 can agitate the minerals at the bottom of the mechanical stirring cavity 13 to prevent the minerals from depositing and clogging in the mechanical stirring cavity 13, which is conducive to improving the mineralization effect of the slurry. Moreover, the air sprayed by the spray gun 342 can further play a role in stirring mineralization, thereby improving the mineralization effect. Preferably, the rake frame 341 can further be provided with a gas passage, and a part of the stirring gas supplied by the rotating shaft 21 is sprayed by the rake frame 341 to the bottom of the mechanical stirring cavity 13, which not only improves the effect of preventing the particles from settling and gathering, but also improves the mineralization effect.

[0090] In other examples, the cross-sectional area of the mechanical stirring cavity 13 gradually increases from both ends of the mechanical stirring cavity 13 towards the middle of the mechanical stirring cavity 13 in the longitudinal direction of the mineralization tank 1. With the central longitudinal section of the mechanical stirring cavity 13 as a boundary, the cross-sectional area of the upper half of the mechanical stirring cavity 13 gradually increases in the direction from top to bottom, and the cross-sectional area of the lower half of the mechanical stirring cavity 13 gradually decreases in the direction from top to bottom. In this way, the probability of the ore pulp flowing out along the inner side wall of the upper edge of the mechanical stirring cavity 13 can be reduced, the turbulent flow effect of the ore pulp in the mechanical stirring cavity 13 can be enhanced, and the turbulent flow intensity in the lower side position of the upper region 42 above the mechanical stirring cavity 13 is low, which is beneficial to improve the mineralization effect and efficiency.

[0091] In some examples, as shown in Figure 1 and Figure 2 , the rotating shaft 21 has a gas supply passage 211 for supplying mineralization gas into the mechanical stirring cavity 13. It can be understood that the gas in the mechanical stirring cavity 13 can be supplied through the gas supply passage 211 in the rotating shaft 21, so that the rotating shaft 21 can not only drive the rotation of the rotor 22, but also provide mineralization gas for the mechanical stirring cavity 13, and the structure is compact, and the number of parts used is reduced.

[0092] In other examples, the mineralization device can also fill mineralization gas into the mechanical stirring cavity 13 through a pipeline at the ore pulp inlet 11 position of the mineralization tank 1, and of course the gas can also be introduced into the mechanical stirring cavity 13 in a self-suction manner.

[0093] As shown in Figures 1 to 4 , the flotation equipment of the embodiment of the utility model 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 utility model. The mineralization device is arranged in the tank body 4, and the driving device 35 is arranged above the tank body 4 and connected with 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 utility model can form a strong turbulent flow field in the mechanical stirring cavity 13, reduce the mineralization weak area, improve the mineralization effect, and reduce the local wear of the mineralization tank 1.

[0095] In some examples, the flotation equipment further comprises an aeration device 5, the tank body 4 has an upper region 42 and a column selection region, the upper region 42 is located above the mineralization tank 1, the column selection region comprises a lower region 41 and a communication region 43, the lower region 41 is located below the mineralization tank 1, the communication region 43 is located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank body 4, the aeration device 5 is communicated with the lower region 41 and is used to fill gas into the lower region 41 to perform column selection on the ore pulp entering the column selection region from the mechanical stirring cavity 13 in the column selection region, so that the flotation equipment of the embodiment of the utility model 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 bubbles are gathered to the upper region 42, and the lower region 41 is used for column separation. The mineralized bubbles in the slurry discharged from the mechanical stirring cavity 13 enter the upper region 42 upward, the slurry containing other particles (target particles not attached to the bubbles, non-target mineral particles not attached to the bubbles) enters the lower region 41 through the communication region 43, the aeration device 5 is in communication with the lower region 41, and the aeration device 5 is used for filling gas into the lower region 41 to perform column separation on the slurry entering the lower region 41. The driving device 35 is arranged above the tank body 4 and connected with the rotating shaft 21 of the mineralization device to drive the rotating shaft 21 to rotate.

[0097] According to the flotation equipment provided by the embodiment of the present application, mechanical stirring mineralization and column separation can be respectively performed on the mechanical stirring cavity in the mineralization tank and the lower region 41 in the tank body 4 below the mechanical stirring cavity, so that the mineralization effect of the flotation equipment can be further improved, and the combination of mechanical stirring mineralization and gas stirring mineralization improves the mineralization and flotation effect and improves the applicability to minerals.

[0098] When the flotation equipment performs mineralization on the slurry, the slurry is introduced into the mineralization tank 1 through the slurry inlet 11 in the direction from bottom to top, the rotor 22 rotates and stirs in the mechanical stirring cavity 13, air is dispersed into small bubbles, target particles are attached to the bubbles to form mineralized bubbles, and because 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 angles of adjacent line segments 14 are different from each other, the slurry can better achieve the mineralization effect under the multi-direction reflection and rectification of the inner wall of the mineralization tank 1. The mineralized bubbles flow out of the slurry outlet 12 of the mineralization tank 1 and flow upward to the upper region 42. The particles not attached to the bubbles can flow out of the slurry outlet 12 of the mineralization tank 1 and enter the lower region 41 through the communication region 43 under the action of gravity. Under the action of the aeration device 5, column separation can be performed in the lower region 41. The mineralized bubbles after column separation flow upward to the upper region 42 through the communication region 43, the tailings fall into the bottom of the tank body 4 under the action of gravity, and are discharged from the discharge port 44 to the outside of the tank body 4.

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

[0100] Optionally, the flotation equipment of the embodiment of the present application can not include the aeration device 5, so that the flotation equipment only performs flotation through mechanical stirring.

[0101] As Figure 1As shown, the bottom of the tank body 4 can be conical (funnel-shaped), pyramidal or wedge-shaped, etc., to guide the tailings, thereby improving the efficiency of the tailings discharged from the discharge port 44.

[0102] Optionally, as shown, Figures 1 to 4 As shown, the flotation device further comprises a plurality of flow guide plates 16 arranged in the 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 flow guide plates 16 are arranged along the circumference of the mineralization tank 1. The flow guide plates 16 can guide the slurry containing particles not attached to the bubbles downward into the lower area 41, and the flow guide plates 16 can also guide the mineralized bubbles after column selection upward into the upper area 42. The flow guide plates 16 can reduce the turbulence intensity in the communication area 43, which is beneficial to improve the mineralization and flotation effect of the flotation device.

[0103] In some embodiments, as shown, Figure 11 The flotation device further comprises a bubble scraping device 6, the bubble scraping device 6 comprises a rotatable scraper 61 arranged in the tank body 4 and located in the froth zone above the upper area 42, the scraper 61 is arc-shaped or involute-shaped, and the included 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 collinear with the axis of the tank body 4, and when the scraper 61 rotates, the mineralized froth in the froth zone can be scraped to collect and discharge the mineralized froth.

[0104] As shown, Figure 11 Because the scraper 61 is arc-shaped or involute-shaped, the extension path of the scraper 61 can be extended, the resistance when the scraper 61 moves can be reduced, and the energy consumption when the scraper 61 moves can be reduced. In addition, the included angle between the scraper 61 and the vertical plane can be 0-30 degrees, for example, the included angle between the scraper 61 and the vertical plane is 1 degree, 10 degrees, 15 degrees, 20 degrees, 25 degrees, or 30 degrees. Thus, the scraper 61 can scrape the bubbles quickly, and the scraper 61 can scrape a thicker froth layer, which is beneficial to improve the bubble scraping efficiency of the scraper 61.

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

[0106] For the adjacent two layers of scrapers 61, the number of scrapers 61 of the upper layer can be greater than that of the lower layer. It can be understood that the plurality of scrapers 61 of the upper layer are arranged more densely, and the plurality of scrapers 61 of the lower layer are arranged more sparsely. The sparsely arranged scrapers 61 of the lower layer can sort the mineralized froth in the upper region 42, and the densely arranged scrapers 61 of the upper layer can lift the scraping amount of the mineralized froth when rotating, so as to scrape a thicker froth layer, which is beneficial to improve the froth scraping efficiency of the scraper 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, which improves the compatibility and applicability of the flotation device and expands the application range of the flotation device. For example, the scraper 61 can be installed on the rotating shaft 21 in a clamp type 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 through the thickness direction thereof, i.e., designed as a hollow structure, which can make the scraping of the froth more smooth.

[0109] In some embodiments, as shown in Figure 3 the flotation device further comprises a pre-mineralization device 36 for pre-mineralizing the ore slurry. The pre-mineralization device 36 is arranged outside the tank body 4 and communicates with the ore slurry inlet 11 of the mechanical stirring chamber 13 to supply the pre-mineralized ore slurry into the mechanical stirring chamber 13. The pre-mineralization device 36 can be a mechanical stirring mineralization type or an aeration mineralization type. It can be understood that when the flotation device is used, the ore slurry is first pre-mineralized by the pre-mineralization device 36, i.e., a part of micro-bubbles is first formed in the ore slurry, so that a part of target particles are attached to the bubbles, and then the pre-mineralized ore slurry is supplied into the mineralization tank 1 through the feeding pipe 32 for mechanical stirring mineralization flotation, and then enters the lower region 41 for column selection. Thus, the mineralization effect can be further improved, which is particularly beneficial to the flotation of fine particles.

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

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

[0112] Optionally, the position of the turbulence suppression grid 37 along the up-down direction is adjustable, thereby the flotation device can adjust the turbulence suppression grid 37 to the appropriate position according to different flotation minerals or flotation effects, so as to expand the application range of the flotation device, and the turbulence suppression effect is better.

[0113] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0114] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot 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" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0115] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0116] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0117] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that the specific feature, structure, material or characteristic being described with reference to the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the features of different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0118] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the changes, modifications, replacements and modifications of the above embodiments made by the person skilled in the art are within the protection scope of the present application.

Claims

1. A mineralization device, characterized in that, The application relates to a mineralization device. The mineralization device comprises a mineralization tank with a mechanical stirring cavity, a pulp inlet at the bottom of the mineralization tank for feeding pulp into the mechanical stirring cavity, and a pulp outlet at the top of the mineralization tank for discharging mechanically stirred pulp; the peripheral wall of the mineralization tank comprises a plurality of line segments in sequence in the longitudinal section of the mineralization tank, and the angles of adjacent line segments are different from each other. The rotor assembly comprises a rotating shaft and a rotor, the lower end of the rotating shaft extends into the mechanical stirring cavity, and the rotor is arranged in the mechanical stirring cavity and is mounted on the lower end of the rotating shaft to be driven to rotate by the rotating shaft for mechanical stirring in the mechanical stirring cavity.

2. The mineralization device of claim 1, wherein, The number of line segments is proportional to the area of the pulp outlet.

3. The mineralization device of claim 1, wherein, The angle between the line segment and the horizontal plane is alpha, wherein 10 DEG <= alpha < 90 DEG.

4. The mineralization device of claim 1, wherein, The rotor is an impeller, which comprises a hub, a disc, a top plate, a bottom plate and blades, the hub is mounted on the lower end of the rotating shaft, the disc, the top plate and the bottom plate are mounted on the hub and the disc is located between the top plate and the bottom plate, the blades comprise upper blades and lower blades, the upper blades and the lower blades are both multiple, the multiple upper blades are arranged between the upper surface of the disc and the top plate and are spaced along the circumferential direction of the disc, the multiple lower blades are arranged between the lower surface of the disc and the disc and are spaced along the circumferential direction of the disc, and the upper blades and the lower blades are one-to-one corresponding or staggered along the circumferential direction of the disc.

5. The mineralization device of claim 1, wherein, The rotor comprises a disc and multiple blades, the disc is mounted on the lower end of the rotating shaft, and the multiple blades are arranged along the circumferential direction of the disc at the outer circumferential edge of the disc, in the longitudinal section of the rotor, the profile line of the outer side surface of the blade comprises a vertical segment and an arc segment, the upper end of the arc segment is connected with the lower end of the vertical segment and gradually extends inward.

6. Mineralization device according to claim 4 or 5, characterized in that The blade is provided with a first hollow hole penetrating along the thickness direction of the blade.

7. The mineralization device of claim 1, wherein, A plurality of turbulence enhancement plates are arranged in the mechanical stirring cavity, the multiple turbulence enhancement plates are arranged along the circumferential direction of the mechanical stirring cavity, and the turbulence enhancement plates are connected with the inner wall of the mechanical stirring cavity.

8. The mineralization device of claim 7, wherein, The rotor is an impeller, the outer diameter of the impeller is A, the gap between the outer side of the impeller and the inner side of the turbulence enhancement plate in the radial direction of the rotating shaft is B, and 0.03A <= B <= 0.2A.

9. The mineralization device of claim 8, wherein, The turbulence enhancement plate is provided with a second hollow hole penetrating along the thickness direction of the turbulence enhancement plate. The upper end surface of the turbulence enhancement plate is flush with the upper end surface of the mineralization tank, and the lower end surface of the turbulence enhancement plate is flush with the lower end surface of the mineralization tank.

10. The mineralization device of claim 1, wherein, The mineralization device further comprises a feeding tank, the feeding tank is arranged below the mineralization tank, the feeding tank is provided with a feeding port adapted to be connected with a feeding pipe for feeding pulp into the feeding tank and a discharge port communicated with the pulp inlet for feeding the pulp in the feeding tank into the mechanical stirring cavity, and the feeding tank is integrally or separately made with the mineralization tank.

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

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

13. The mineralization device of claim 1, wherein, The rotating shaft has a gas supply channel for supplying air for mechanical stirring mineralization into the mechanical stirring chamber.

14. A flotation device, characterized in that The mineralization device comprises: The mineralization device is the mineralization device according to any one of claims 1-13; The mineralization device is arranged in the tank body; The 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 plant according to claim 14, characterized in that, The flotation equipment further comprises an aeration device, the tank body has an upper region and a column selection region, the upper region is located above the mineralization tank, the column selection region comprises a lower region and a communication region, the lower region is located below the mineralization tank, the communication region is located between the outer peripheral wall of the mineralization tank and the inner peripheral wall of the tank body, the aeration device communicates with the lower region for filling gas into the lower region to perform column selection on the slurry entering the column selection region from the mechanical stirring chamber in the column selection region.

16. The flotation plant according to claim 15, characterized in that The flotation equipment further comprises a plurality of flow guide plates, the flow guide plates are arranged in the communication region, and the flow guide plates are arranged in the circumferential direction of the mineralization tank.

17. The flotation plant of claim 15, characterized in that, The flotation equipment further comprises a bubble scraping device, the bubble scraping device comprises a rotatable scraping plate, the scraping plate is arranged in the tank body and located in a foam area above the upper region, the scraping plate is arc-shaped or involute-shaped, and the included angle between the scraping plate and the vertical plane is 0-30 degrees.

18. The flotation plant of claim 17, characterized in that, The scraping plate is at least two layers and arranged in the up-down direction, each layer of the scraping plate is a plurality of scraping plates, the plurality of scraping plates in each layer are arranged in the circumferential direction of the tank body, and the number of the scraping plates in the upper layer is greater than that in the lower layer.

19. The flotation plant of claim 17, characterized in that, The position of the scraping plate in the axial direction of the tank body is adjustable; and / or, the scraping plate is provided with a third hollow hole penetrating in the thickness direction of the scraping plate.

20. The flotation plant according to any one of claims 14-19, characterized in that, The flotation equipment further comprises a pre-mineralization device for pre-mineralizing the slurry, the pre-mineralization device is arranged outside the tank body and communicates with the slurry inlet of the mechanical stirring chamber to supply the pre-mineralized slurry into the mechanical stirring chamber, and the pre-mineralization device is a mechanical stirring mineralization type or an air-filled mineralization type.

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