Multistage mineralization flotation equipment

Abstract

The utility model relates to multi-stage mineralization flotation equipment, the multi-stage mineralization flotation equipment includes: groove body, mineralization device, inflation device and diversion subassembly, groove body's inner cavity includes upper part area, mechanical stirring area and column selection area, mineralization device includes rotor subassembly and mineralization groove, the mineralization groove is equipped with mechanical stirring chamber inside, and column selection area is equipped with column selection area inside. The mineralization tank is arranged in the tank body, 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 outer circumferential wall of the mineralization tank and the inner circumferential wall of the tank body, the rotor assembly comprises a rotating shaft and a rotor, and the rotor is located in the mechanical stirring cavity and installed at the lower end of the rotating shaft. The inflation device is communicated with the lower area, the upper end of the flow guide assembly is communicated with the upper area, the lower end of the flow guide assembly is communicated with the lower area, and the flow guide assembly is used for conveying mineralized bubbles in the lower area to the upper area. The multistage mineralization flotation equipment is good in flotation effect and high in flotation efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of floatation, specifically, a multistage mineralization floatation equipment. BACKGROUND

[0002] Floatation is a widely used mineral processing method, and floatation usually includes mechanical agitation floatation and aerated floatation. The purpose of mechanical agitation or aeration is to disperse air into fine bubbles and mix with the ore pulp, so that the target ore particles selectively adhere to the bubbles to form mineralized bubbles, the mineralized bubbles float up, and the ore particles not adhered to the bubbles are discharged from the bottom of the floatation tank with the ore pulp, thereby achieving the purpose of separating minerals.

[0003] The related technology proposes a combination of mechanical agitation floatation machines and aerated floatation columns for floatation to improve the floatation effect. However, the combined floatation in the related technology has the problem of unreasonable equipment structure design, mutual influence of mechanical agitation floatation and aerated floatation, and thus affects the floatation effect and floatation efficiency. SUMMARY

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

[0005] To this end, the utility model embodiment proposes a multistage mineralization floatation equipment, which has a reasonable structure design, good floatation effect, and high floatation efficiency.

[0006] The utility model discloses a multistage mineralization flotation equipment, which comprises a tank body, an inner cavity of the tank body comprises an upper region, a mechanical stirring region and a column selection region, a mineralization device, the mineralization device comprises rotor assembly and mineralization tank, the mineralization tank has mechanical stirring cavity that constitutes the mechanical stirring region in, the bottom of mineralization tank is equipped with for supplying the pulp inlet to the mechanical stirring cavity, the top of mineralization tank is equipped with for discharging the pulp outlet, the mineralization tank is located in the tank body, the upper region is located above the mineralization tank, the column selection region comprises lower region and intercommunication region, the lower region is located below the mineralization tank, the intercommunication region is located between the outer circumferential wall of mineralization tank and the inner circumferential wall of tank body, the rotor assembly comprises shaft and rotor, the lower end of shaft extends into the mechanical stirring cavity, the rotor is located in the mechanical stirring cavity and is installed on the lower end of shaft to be driven to rotate by the shaft and carry out mechanical stirring mineralization in the mechanical stirring cavity, the aerator is communicated with the lower region, is used for filling the gas into the lower region, so that the column selection is carried out to the pulp that enters the column selection region from the mechanical stirring cavity in the column selection region, the drive device is located above the tank body and is connected with the shaft to drive the shaft and the rotor to rotate, the flow guide assembly, the upper end of flow guide assembly is communicated with the upper region, the lower end of flow guide assembly is communicated with the lower region, and the flow guide assembly is used for conveying the mineralization bubble in the lower region to the upper region.

[0007] According to the multistage mineralization flotation equipment, when mineralization is carried out, the pulp is introduced into the mineralization tank through the pulp inlet in the downward direction, the rotor rotates and stirs in the mechanical stirring cavity to generate mineralization foam, the mineralization foam can flow out of the pulp outlet of the mineralization tank and flow upward to the upper region. Other mineral particles that are not attached to the bubbles flow out of the pulp outlet of the mineralization tank with the pulp, and under the action of gravity, enter the lower region downward through the intercommunication region. Under the action of the air supplied by the aerator, the other mineral particles that are not attached to the bubbles can be column-selected in the lower region. The mineralization bubbles after column selection flow upward from the lower region to the upper region through the flow guide assembly. The tailings after column selection fall into the bottom of the tank body under the action of gravity and are discharged. Since the other mineral particles that are not attached to the bubbles enter the lower region downward through the intercommunication region, and the mineralization bubbles after column selection enter the upper region upward through the flow guide assembly, the problem of flow interference between the two is avoided, the flotation effect is good, and the flotation efficiency is high.

[0008] In some embodiments, the flow guide assembly is arranged in the tank body, the lower end of the flow guide assembly is located in the lower region, and the upper end of the flow guide assembly extends into the upper region through the intercommunication region upward.

[0009] In some embodiments, the flow guide assembly is arranged outside the tank body, a lower end of the flow guide assembly is in communication with the lower region, and an upper end of the flow guide assembly is in communication with the upper region.

[0010] In some embodiments, the flow guide assembly comprises a flow guide pipe and a flow guide pump, and the flow guide pump is mounted on the flow guide pipe.

[0011] In some embodiments, the flow guide assembly comprises a flow guide pipe, and a lower end of the flow guide pipe is trumpet-shaped.

[0012] In some embodiments, the upper region comprises a transport separation zone and a froth zone, the froth zone is located at a top of the upper region, the transport separation zone is located at a substantially middle part of the upper region, and an upper end of the flow guide assembly is in communication with the transport separation zone.

[0013] In some embodiments, the multi-stage mineralization flotation device further comprises a pre-mineralization device arranged outside the tank body, the pre-mineralization device is used for pre-mineralizing the ore pulp, and the pre-mineralization device is in communication with an ore pulp inlet of the mineralization tank.

[0014] In some embodiments, the mineralization device further comprises a plurality of turbulent flow enhancement plates, the plurality of turbulent flow enhancement plates are arranged in a circumferential direction of the mechanical stirring cavity and are in contact with inner walls of the mechanical stirring cavity.

[0015] In some embodiments, the mineralization device further comprises a plurality of flow guide plates, the plurality of flow guide plates are arranged in the communication region, the plurality of flow guide plates are arranged in a circumferential direction of the mineralization tank, upper surfaces of the flow guide plates are flush with a top surface of the mineralization tank, lower surfaces of the flow guide plates are lower than a bottom surface of the mineralization tank, the flow guide plate comprises a flow guide plate body and a wing baffle plate arranged on the flow guide plate body, the flow guide plate body is positioned in an up-down direction, and the wing baffle plate extends downwardly and obliquely from the flow guide plate body.

[0016] In some embodiments, the tank body is provided with a turbulent flow suppression grid in the upper region and / or the lower region, and a position of the turbulent flow suppression grid in the up-down direction is adjustable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic view of a multi-stage mineralization flotation device according to an embodiment of the present application.

[0018] Figure 2 FIG. 2 is a schematic view of a multi-stage mineralization flotation device according to another embodiment of the present application.

[0019] Figure 3 FIG. 3 is a schematic view of a multi-stage mineralization flotation device according to still another embodiment of the present application.

[0020] Figure 4 is a schematic view of a mineralization device of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0021] Figure 5 is a schematic view of a mineralization device of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0022] Figure 6 is a partial sectional view of a mineralization device of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0023] Figure 7 is a schematic view of a rotor of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0024] Figure 8 is a partial sectional view of a rotor of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0025] Figure 9 is a schematic view of a rotor of a multistage mineralization flotation equipment according to another embodiment of the present application.

[0026] Figure 10 is a schematic view of a turbulence intensifier plate of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0027] Figure 11 is a top view of a tank body and a bubble scraping device of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0028] Figure 12 is a schematic view of a rake frame of a multistage mineralization flotation equipment according to an embodiment of the present application.

[0029] Reference signs:

[0030] 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;

[0031] 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;

[0032] 31, cover plate; 311, flow-through hole; 32, feeding pipe; 33, feeding box; 34, anti-settling assembly; 341, rake frame; 342, spray gun; 35, driving device; 36, pre-mineralization device; 37, turbulence suppression grid;

[0033] 4. Tank body; 41. Lower area; 42. Upper area; 421. Transport separation zone; 422. Foam zone; 43. Connecting area; 44. Discharge port;

[0034] 5. Inflation device;

[0035] 6. Bubble scraping device; 61. Scraper;

[0036] 7. Flow guiding assembly; 71. Flow guiding pipe. Detailed Implementation

[0037] 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.

[0038] The following is a reference appendix. Figures 1 to 12 This invention describes a multi-stage mineral flotation device according to an embodiment of the present invention.

[0039] like Figures 1 to 5 As shown, the multi-stage mineralization flotation equipment of this utility model embodiment includes: a tank 4, a mineralization device, an aeration device 5, a drive device 35, and a flow guiding component 7. The inner cavity of the tank 4 includes an upper region 42, a mechanical stirring region, and a column separation region. The mineralization device includes a rotor assembly 2 and a mineralization tank 1.

[0040] The mineralization tank 1 is located inside the tank body 4. The column separation area includes a lower region 41 and a connecting region 43. The upper region 42 is located above the mineralization tank 1, the lower region 41 is located below the mineralization tank 1, and the connecting region 43 is located between the outer peripheral wall of the mineralization tank 1 and the inner peripheral wall of the tank body 4. It can be understood that the upper region 42, the connecting region 43, and the lower region 41 are arranged sequentially from top to bottom.

[0041] The mineralization tank 1 has a mechanical stirring chamber 13 that constitutes a mechanical stirring area. The bottom of the mineralization tank 1 is provided with a slurry inlet 11 for supplying slurry into the mechanical stirring chamber 13, and the top of the mineralization tank 1 is provided with a slurry outlet 12 for discharging the mechanically stirred slurry. It can be understood that the slurry coming out of the mechanical stirring chamber 13 includes target particles (mineral particles attached to the air bubbles) and other particles (target particles not attached to the air bubbles or other non-target particles).

[0042] 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, and the rotor 22 is located in the mechanical stirring cavity 13 and is installed at the lower end of the rotating shaft 21 to be driven to rotate by the rotating shaft 21 to perform mechanical stirring mineralization in the mechanical stirring cavity 13. That is, the target particles in the ore pulp and the air supplied into the mechanical stirring cavity 13 are subjected to mechanical stirring by the rotor assembly 2, and the target particles are attached to the bubbles to form mineralized bubbles, so that mechanical stirring flotation is realized.

[0043] The rotating shaft 21 can be provided with an air supply channel 211 for supplying mineralized gas into the mechanical stirring cavity 13. A separate air supply pipeline can also be provided to supply air into the mechanical stirring cavity 13.

[0044] The aeration device 5 communicates with the lower region 41 and is used to fill the lower region 41 with gas to perform column selection on the ore pulp entering the column selection region from the mechanical stirring cavity 13, the driving device 35 is arranged above the tank body 4 and is connected with the rotating shaft 21 to drive the rotating shaft 21 and the rotor 22 to rotate, the upper end of the flow guide assembly 7 communicates with the upper region 42, and the lower end of the flow guide assembly 7 communicates with the lower region 41. The flow guide assembly 7 is used to transport the mineralized bubbles in the lower region 41 to the upper region 42.

[0045] According to the multi-stage mineralization flotation device of the embodiment of the present application, when mineralization is performed, the ore pulp is introduced into the mineralization tank 1 through the pulp inlet 11 in the direction from bottom to top, the rotor 22 rotates and stirs in the mechanical stirring cavity 13 to generate mineralized bubbles, the mineralized bubbles can flow out of the pulp outlet 12 of the mineralization tank 1 and flow upward to the upper region 42. Other ore particles that are not attached to the bubbles flow out of the pulp outlet 12 of the mineralization tank 1 with the ore pulp and enter the lower region 41 downward through the communication region 43 under the action of gravity. Under the action of the air supplied by the aeration device 5, the other ore particles that are not attached to the bubbles (target particles that are not attached to the bubbles or other non-target particles) can be subjected to column selection in the lower region 41. The mineralized bubbles after column selection flow upward from the lower region 41 to the upper region 42 through the flow guide assembly 7, and the tailings after column selection fall into the bottom of the tank body 4 under the action of gravity and are discharged. Since the other particles that are not attached to the bubbles enter the lower region 41 downward through the communication region 43, and the mineralized bubbles after column selection enter the upper region 42 upward through the flow guide assembly 7, the problem of convection interference between the two is avoided, so that the flotation effect is good and the flotation efficiency is high.

[0046] It can be understood that by arranging the flow guide assembly 7, the mineralized bubbles generated after column selection mainly enter the upper region 42 from the lower region 41 through the flow guide assembly 7, and of course, a small part of the mineralized bubbles can also enter the upper region 42 from the lower region 41 upward through the communication region 43.

[0047] In addition, the rotating shaft 21 has a gas supply channel 211 for supplying mineralization gas into the mechanical stirring cavity 13, so that the gas in the mechanical stirring cavity 13 is supplied to the mechanical stirring cavity 13 through the gas supply channel 211 in the rotating shaft 21. In the example of the utility model, 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, so that the structure is compact, the number of parts is reduced, and the cost is reduced. Of course, a separate gas supply pipeline can also be arranged to supply air into the mechanical stirring cavity 13.

[0048] It can be understood that mineralization refers to the selective adhesion process of target particles and bubbles, after mineralization, the ore pulp includes mineralization bubbles (the mineralization bubbles can be called mineralization foam after aggregation, and in the following description, the mineralization bubbles and the mineralization foam can be used interchangeably) and other particles that are not attached to the bubbles, and the mineralization bubbles are the 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 include target particles not attached to the bubbles, non-target mineral particles not attached to the bubbles, and tailing particles.

[0049] As shown in Figures 1 to 4 , the bottom of the groove body 4 is provided with a discharge port 44, and the mineral particles not attached to the bubbles after column selection fall into the bottom of the groove body 4 under the action of gravity and are discharged through the discharge port 44. 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 rotate synchronously.

[0050] As shown in Figure 1 , the bottom of the groove body 4 can be in any shape such as a conical shape (funnel shape), a prismatic shape or a wedge shape, so as to guide the tailings, thereby improving the efficiency of discharging the tailings from the discharge port 44.

[0051] Optionally, as shown in Figure 2 , the flow guide assembly 7 is arranged in the groove body 4, the lower end of the flow guide assembly 7 is located in the lower region 41, and the upper end of the flow guide assembly 7 penetrates into the upper region 42 upward through the communication region 43. It can be understood that the flow guide assembly 7 is arranged in the interior of the groove body 4, so as to reduce the occupied space of the whole multi-stage mineralization flotation device. Since the flow guide assembly 7 penetrates through the communication region 43, the space of the conveying separation channel can be utilized, that is, the other particles not attached to the bubbles after mechanical stirring can flow downward to the lower region 41 through the communication region 43, and the mineralization foam after column selection penetrates through the communication region 43 under the guidance of the flow guide assembly 7 and enters the upper region 42 upward, so as to avoid the problem that the particles not attached to the bubbles and the mineralization foam generated by column selection flow upward and downward and affect each other, and the flotation effect and the flotation efficiency of the multi-stage mineralization flotation device are improved.

[0052] In another example, as shown in Figure 1As shown, the flow guide assembly 7 is arranged outside the tank body 4, the lower end of the flow guide assembly 7 is communicated with the lower area 41, and the upper end of the flow guide assembly 7 is communicated with the upper area 42. It can be understood that the flow guide assembly 7 is arranged outside the tank body 4, and does not occupy the space of the communication area 43. Therefore, the efficiency and speed of the particles not attached to the bubbles after mechanical stirring flowing to the lower area 41 through the communication area 43 can be improved.

[0053] Compared with the scheme that the flow guide assembly 7 is arranged in the tank body 4, the radial size of the communication area 43 can be reduced, that is, the distance between the mineralization tank 1 and the tank body 4 can be appropriately reduced, so that the installation structure of the tank body 4 and the mineralization device is more compact.

[0054] In some embodiments, as shown in Figure 1 and Figure 2 As shown, the flow guide assembly 7 includes a flow guide pipe 71 and a flow guide pump (not shown), and the flow guide pump is installed on the flow guide pipe 71. It can be understood that the lower end of the flow guide pipe 71 is communicated with the lower area 41, and the upper end of the flow guide pipe 71 is communicated with the upper area 42. The mineralized foam formed by the lower area 41 can be transported to the upper area 42 through the flow guide pipe 71, and the flow guide pump can drive the mineralized foam to flow in the flow guide pipe 71. The multistage mineralization flotation device of the embodiment of the utility model has the advantages of simple structure design, convenient assembly, and good flow guide effect by arranging the flow guide assembly 7 in the above form.

[0055] For example, the lower end of the flow guide pipe 71 can be in a trumpet shape. It can be understood that the lower end of the flow guide pipe 71 is in a trumpet shape, which can increase the opening area of the lower end of the flow guide pipe 71, so that the mineralized foam can enter the flow guide pipe 71 through the lower end of the flow guide pipe 71, thereby improving the guiding efficiency of the flow guide pipe 71.

[0056] In some embodiments, as shown in Figure 1 and Figure 2 As shown, the upper area 42 can include a transport separation zone 421 and a foam zone 422, the foam zone 422 is located at the top of the upper area 42, and the transport separation zone 421 is located at the middle of the upper area 42. Preferably, the upper end of the flow guide assembly 7 is communicated with the transport separation zone 421. It can be understood that the upper end of the flow guide assembly 7 is located at the middle of the upper area 42, and has a certain distance from the foam zone 422. Therefore, when the flow guide assembly 7 passes the mineralized foam into the transport separation zone 421 and then enters the foam zone 422 upward, the flow of the mineralized bubbles discharged by the flow guide assembly can avoid affecting the foam in the foam zone, thereby improving the flotation effect.

[0057] In some embodiments, as shown in Figure 3As shown, the multi-stage mineralization flotation device further comprises a pre-mineralization device 36 arranged outside the tank body 4, the pre-mineralization device 36 is used for pre-mineralizing the ore pulp, and the pre-mineralization device 36 is in communication with the pulp inlet 11 of the mineralization tank 1. Specifically, one end of the feeding pipe 32 is in communication with the pre-mineralization device 36, and the other end of the feeding pipe 32 is in communication with the pulp inlet 11 of the mineralization tank 1, and the pre-mineralized ore pulp can enter the tank body 4 through the feeding pipe 32. 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 pulp is first pre-mineralized by the pre-mineralization device 36, that is, a part of the micro-bubbles is formed in the ore pulp, and a part of the target particles are attached to the bubbles, and then the pre-mineralized ore pulp is introduced 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. Therefore, the mineralization effect can be further improved, and the flotation of fine particles is particularly beneficial.

[0058] In some embodiments, as Figure 6 As shown, the mineralization device further comprises a plurality of turbulence enhancement plates 15, the plurality of turbulence enhancement plates 15 are arranged along the circumference of the mechanical stirring cavity 13, the turbulence enhancement plates 15 are in contact with the inner wall of the mechanical stirring cavity 13 and are arranged around the rotor. When the rotor 22 rotates, because the plurality of turbulence enhancement plates 15 are arranged along the circumference of the mechanical stirring cavity 13, the ore pulp flowing circumferentially in the mechanical stirring cavity 13 is sequentially blocked and collided by the plurality of turbulence enhancement plates 15, thereby enhancing the turbulence effect of the ore pulp in the mechanical stirring cavity 13, and further improving the mineralization effect.

[0059] Optionally, as 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 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.

[0060] The inventor of the utility model embodiment finds and proves through experiments that when the impeller and the turbulence enhancement plate 15 adopt the above structural parameters, it is easier to generate micro-bubbles during mineralization, and the circulating mixing effect is better, which is more beneficial to the flotation of fine particles.

[0061] Optionally, as Figure 10As shown, the turbulence intensifier plate 15 is provided with a second hollow hole 151 penetrating along the thickness direction thereof. The turbulence intensifier plate 15 of the mineralization device in the embodiment of the utility model is designed into a hollow structure, and it is easier to generate tiny bubbles when the impeller rotates, so that the circulating mixing effect of the ore pulp and the bubbles is better, and it is more conducive to the mineralization of the fine-grained minerals, the resistance of the ore pulp flow is smaller, and the energy dissipation is less.

[0062] The opening size of the second hollow hole 151 can be designed according to the mineral properties, and the embodiment of the utility model does not limit this. 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 multiple, and the multiple second hollow holes 151 are arranged discretely.

[0063] In other examples, the turbulence intensifier plate 15 can also be a solid plate.

[0064] In some embodiments, the turbulence intensifier plate 15 can be divided into multiple sections in the radial direction of the mineralization tank 1, and the multiple sections can be connected into one body or can be segmented and distributed at intervals. The multiple turbulence intensifier plates 15 can be aligned in the radial direction or can be staggered obliquely in the radial direction. According to the characteristics of the minerals, the structure of the turbulence intensifier plate 15 can be conveniently selected, and the applicability is improved.

[0065] Optionally, 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 ore pulp 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 above the mineralization tank 1, and is conducive to the upward movement of the mineralization bubbles.

[0066] In some embodiments, as shown in Figs. 1 and 2, Figure 4 and Figure 5 As shown, the mineralization device further comprises multiple flow guide plates 16, the flow guide plates 16 are arranged in the communication area 43, the multiple flow guide plates 16 are arranged at intervals along the circumferential direction of the mineralization tank 1, the upper surface of the flow guide plate 16 is flush with the top surface of the mineralization tank 1, and the lower surface of the flow guide plate 16 is lower than the bottom surface of the mineralization tank 1. The flow guide plate 16 can introduce the ore pulp containing the ore particles not attached to the bubbles downward into the lower region 41. The flow guide plate 16 can reduce the turbulence degree of the ore pulp at the communication area 43 position, avoid the ore pulp flow from being more turbulent, and is conducive to entering the lower region 41 for column selection, thereby improving the mineralization and flotation effect of the flotation equipment.

[0067] The drainage plate 16 comprises a drainage plate body and a wing baffle plate arranged on the drainage plate body. The drainage plate body is positioned along the up-down direction, and the wing baffle plate extends downwardly and obliquely from the drainage plate body. The drainage plate body can be connected with the outer wall of the mineralization tank 1 or the inner wall of the tank body 4.

[0068] The wing baffle plate can block the mineralized bubbles in the lower area 41 from rising to the upper area 42 through the communication area 43, so that more mineralized bubbles generated by column selection can reach the upper area 42 through the flow guide assembly 7, further improving the effect of avoiding the interference of the up-down convection of the unattached bubble particles and the mineralized bubbles in the communication area 43.

[0069] In the related art, mineralization is carried out in the tank of the flotation device, and the ore pulp is introduced from the outside into the tank, and the 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 tank, the mineralization and flotation effect is poor, and the flotation efficiency is not high. Therefore, in the related art, a parabolic basin-shaped reflection bottom is arranged in the tank, the ore pulp 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 ore pulp containing the mineralized bubbles out of the reflection bottom to improve the flotation efficiency. However, 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 tank, the reflection action of the reflection bottom can improve the flotation efficiency to a certain extent. However, due to the open top of the reflection bottom, the stirred ore pulp 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.

[0070] In order to further improve the mineralization and flotation effect and improve the flotation efficiency, the inventors propose a limited mineralization scheme. The 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 region, or a limited region, simply referred to as a limited region. For example, the limited region is smaller and relatively closed compared with the tank cavity in the related art, and is relatively closed compared with the open parabolic reflection bottom in the related art. During the mineralization process, the ore pulp and the gas are introduced into the limited space, and mechanical stirring is carried out in the limited space. Therefore, more air bubbles can be formed, the air bubbles and the target particles in the ore pulp repeatedly reflect, stir and collide with each other in the limited space, the contact time, the contact frequency and the collision frequency of the air bubbles and the target particles are improved, the mineralization and flotation effect is improved, and the efficiency is further improved. Therefore, the mineralization carried out in the limited space in the utility model can be referred to as limited mineralization.

[0071] Specifically, as shown in FIG. 1, the limited mineralization device 100 comprises a limited mineralization cavity 1000 and a flow guide assembly 7. Figure 1 and Figure 2As 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 as to allow the mineralized pulp to flow out. 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 multi-stage mineralization flotation device of the embodiment of the present application improves the closedness of the mechanical stirring cavity 13 by arranging the cover plate 31 above the mineralization tank 1, which can prolong the time for the pulp to reflect, rectify and surge in the mechanical stirring cavity 13, so as to increase 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 at the lower side position of the upper area 42 above the mechanical stirring cavity 13 lower, which is beneficial to the upward movement of the mineralized bubbles.

[0072] In other words, the turbulence of the pulp 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 the fine particles are more easily captured. The mineralized bubbles flow more smoothly at the lower side position of the upper area 42 above the mechanical stirring cavity 13, the attached particles are more stable, and are not easy to fall off.

[0073] 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 pulp, which is not limited in the embodiment of the present application.

[0074] In another example, as shown in Figure 4 The cover plate 31 covers the pulp outlet 12 and is provided with a flow-through 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 to the mineralization tank 1 through the flow-through 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 multi-stage mineralization flotation device of the embodiment of the present application improves the closedness of the mechanical stirring cavity 13 by arranging the cover plate 31 above the mineralization tank 1, which can prolong the time for the pulp to reflect, rectify and surge in the mechanical stirring cavity 13, so as to increase 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 at the lower side position of the upper area 42 above the mechanical stirring cavity 13 lower, which is beneficial to the upward movement of the mineralized bubbles.

[0075] In other words, the turbulence of the pulp 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 the fine particles are more easily captured. The mineralized bubbles flow more smoothly at the lower side position of the upper area 42 above the mechanical stirring cavity 13, the attached particles are more stable, and are not easy to fall off.

[0076] 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 inlet connected with the feeding pipe 32 to feed the slurry into the feeding tank 33 and a feeding outlet 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 firstly fed into the feeding tank 33 through the feeding pipe 32, and then the slurry is fed into 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 into the mineralization tank 1 by arranging the feeding tank 33 below the mineralization tank 1, so that the slurry can quickly enter into the flow field stirred by the impeller, which is beneficial to improve the turbulent effect of the reinforced slurry in the mechanical stirring cavity 13, to enhance the capturing effect of the bubbles on the target minerals, and to enhance the strength of the internal slurry circulation.

[0077] 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 to spray water and / or gas to the bottom of the mechanical stirring cavity 13, preferably, the spray gun 342 sprays air.

[0078] It can be understood that 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 to spray 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 blocking in the mechanical stirring cavity 13, which is beneficial to improve 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 be provided with a gas channel, 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 anti-settling effect, but also improves the mineralization effect.

[0079] In some embodiments, in the longitudinal section of the mineralization tank 1, i.e. along the axial direction of the mineralization tank 1, Figure 4Within the cross-section of the mineralization tank 1 (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 arc-shaped or parabolic, but is composed of multiple straight line segments with different inclination angles for different peripheral wall segments.

[0080] According to the multi-stage mineralization flotation equipment of this utility model embodiment, the slurry is fed into the mineralization tank 1 from bottom to top through the slurry inlet 11. The rotor 22 rotates and stirs in the mechanical stirring chamber 13 to mineralize the bubbles. Since the peripheral wall of the mineralization tank 1 includes multiple line segments 14 connected in sequence in the longitudinal section of the mineralization tank 1, the reflection, rectification and turbulence of the slurry by the inner wall of the mineralization tank 1 are enhanced, thus improving the mineralization effect. Moreover, since the inclination angles of adjacent line segments 14 are different, that is, the inclination angles of different parts of the peripheral wall of the mineralization tank 1 are different, the angle of the slurry reflected by different peripheral wall parts is different. Compared with the arc-shaped peripheral wall, the effect of the slurry flow reflected by the peripheral wall parts with different inclination angles colliding with each other in the mineralization tank 1 is enhanced, thereby enhancing the turbulence generated in the mineralization tank 1, reducing the weak mineralization area, further increasing the generation of bubbles and the probability of adhesion to mineral particles, thereby improving the mineralization effect, and reducing local wear of the mineralization tank 1.

[0081] For example, such as Figure 1 and Figure 4 As shown, the cross-sectional area of ​​the mechanical stirring chamber 13 gradually decreases from top to bottom, and the mineralization tank 1 can have a generally segmented basin-shaped structure. The segmented basin-shaped mechanical stirring chamber 13 can provide reflective forces in multiple directions for the slurry stirred by the rotor 22, thereby enhancing the collision effect of the slurry flow, increasing the turbulence intensity, and improving the mineralization effect.

[0082] Compared to the parabolic or arc-shaped mineralization tank 1 in related technologies, the mineralization tank 1 of the multi-stage mineralization flotation equipment of this utility model embodiment is easier to process and obtain multiple reflection focal points. In other words, the mineralization tank 1 in this utility model embodiment is more likely to achieve multiple reflection focal points close to the theoretical design, improving the practical application effect. For mineralization tanks 1 of different sizes, by adjusting the number and inclination angle of line segments 14 in the longitudinal section of the mineralization tank 1, a scheme close to the theoretical focal point can still be obtained, making it easier to realize the theoretical flow field model, that is, folding and surging in multiple directions along the inner wall of the mineralization tank 1, thereby forming a strong turbulent flow field. The mineralization tank 1 of this utility model embodiment can strengthen the overall mineralization and reduce the weak mineralization area in the mechanical stirring chamber 13, reducing the situation of excessive local wear of the mineralization tank 1.

[0083] For coarser mineral 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 so that the mineral particles can participate in circulation and mixed mineralization multiple times, reducing the falling of coarse particles and avoiding the phenomenon of slurry settling to the bottom and clogging the pipeline.

[0084] The angle of the edge of the slurry outlet 12 of the mineralization tank 1 can be adaptively adjusted, so as to avoid that the angle is too large and causes the ore pulp to rush out of the mineralization tank 1, and the mineralization efficiency and effect of the mineralization tank 1 are improved.

[0085] Preferably, as shown in Figure 1 and Figure 4 , the angle between the line segment 14 and the horizontal plane is α, wherein 10°≤α<90°. For example, the angle α between the line segment 14 and the horizontal plane can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°. Alternatively, the angle α can be close to and less than 90°. The inventors of the present embodiment have found through research and verified through experiments that when the angle α between the line segment 14 and the horizontal plane is in the above range, the particles can better participate in circulation and mixing mineralization, the turbulent flow effect generated in the mineralization tank 1 is enhanced, and the problem that the ore pulp rushes out of the mineralization tank 1 along the side wall of the mineralization tank 1 can be avoided, and the mineralization efficiency of the mineralization tank 1 is improved.

[0086] Optionally, the number of line segments 14 is proportional to the area of the slurry outlet 12. It can be understood that when the area of the slurry outlet 12 is larger, the number of line segments 14 also needs to be arranged more, thereby improving the reflection and rectification effect of the mineralization tank 1, 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 as the mineralization tank 1 increases and the type of minerals changes, so as to meet the mineralization demand of the mineralization device and improve the mineralization effect.

[0087] In some embodiments, as shown in Figure 7 and Figure 8 , the rotor 22 is in the form of an impeller, and the impeller includes a hub 221, a disc 222, a top plate 224, a bottom plate 225, and blades 223. The blades 223 include upper blades 2231 and lower blades 2232.

[0088] 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 apart along the circumference of the disc 222, and the multiple lower blades 2232 are arranged between the lower surface of the disc 222 and the disc 222 and are spaced apart along the circumference of the disc 222. The upper blades 2231 and the lower blades 2232 are one-to-one corresponding or staggered along the circumference of the disc 222.

[0089] 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.

[0090] When the impeller rotates, the upper blade 2231 on the upper side of the impeller 222 and the lower blade 2232 on the lower side of the impeller 222 can rotate simultaneously. On the one hand, this can enhance the impeller's suction capacity (the ability to draw slurry from the inlet 11 into the mechanical stirring chamber 13) and stirring effect. On the other hand, it can enhance the intensity of internal slurry circulation, improve the mineralization effect of the slurry, and enhance the selectivity in the flotation process.

[0091] For example, the upper blade 2231 and the lower blade 2232 are arranged radially, with the number of both upper blade 2231 and lower blade 2232 ranging from 4 to 16, and are evenly distributed. It should be noted that the number of upper blade 2231 and lower blade 2232 may be equal or unequal, and this embodiment of the present invention does not limit this.

[0092] Since the upper blade 2231 is located between the upper surface of the impeller 222 and the top plate 224, and the lower blade 2232 is located between the lower surface of the impeller 222 and the impeller 222, the intensity of the internal slurry circulation can be further enhanced, the energy utilization rate of the impeller rotation can be improved, the effect of bubbles capturing target minerals can be enhanced, and the selectivity in the flotation process can be improved.

[0093] 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.

[0094] In other examples, 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.

[0095] Optionally, such as Figure 9As shown, the rotating shaft 21 has a gas supply channel 211 for supplying mineralization gas into the mechanical stirring chamber 13, the wheel disc 222 has a gas jet channel 2220 in communication with the gas supply channel 211 in the rotating shaft 21, and the gas jet outlets of the gas jet channel 2220 are formed on the outer circumferential surface of the wheel disc 222 and are arranged along the circumferential direction of the wheel disc 222. Since the gas jet outlets of the gas jet channel 2220 in the wheel disc 222 are formed on the outer circumferential surface of the wheel disc 222 and are arranged along the circumferential direction of the wheel disc 222, the mixing degree of the ore pulp and the gas bubbles can be improved, and the mineralization effect of the mineralization device can be improved.

[0096] Optionally, the vane 223 is provided with a first hollow hole 2233 penetrating along the thickness direction thereof. The vane 223 of the mineralization device in the embodiment of the utility model is designed as a hollow structure, and it is easier to generate tiny gas bubbles when the impeller rotates, so that the circulating mixing effect of the ore pulp and the gas bubbles is better, and it is more conducive to the flotation of the fine-grained minerals.

[0097] For example, the first hollow hole 2233 can be a strip-shaped hole or a circular hole. The strip-shaped hole can extend obliquely, horizontally or vertically. The first hollow hole 2233 can be multiple, and the multiple first hollow holes 2233 are arranged discretely.

[0098] In some embodiments, as shown, Figure 11 As shown, the multi-stage mineralization flotation device further comprises a bubble scraping device 6, the bubble scraping device 6 comprises a rotatable scraping plate 61, the scraping plate 61 is arranged in the tank body 4 and located in the froth zone 422 of the upper region 42, the scraping plate 61 is arc-shaped or involute-shaped, and the included angle between the scraping plate 61 and the vertical plane is 0-30 degrees. It can be understood that the rotation axis of the scraping plate 61 is collinear with the axis of the tank body 4, and when the scraping plate 61 rotates, the mineralization froth in the froth zone can be scraped to collect and discharge the mineralization froth.

[0099] Since the scraping plate 61 is arc-shaped or involute-shaped, the extension path of the scraping plate 61 can be prolonged, the resistance when the scraping plate 61 moves can be reduced, and the energy consumption when the scraping plate 61 moves can be reduced. In addition, since the included angle between the scraping plate 61 and the vertical plane can be 0-30 degrees, for example, the included angle between the scraping plate 61 and the vertical plane is 1 degree, 10 degrees, 15 degrees, 20 degrees, 25 degrees or 30 degrees. Thus, the rapid bubble scraping of the scraping plate 61 can be realized, and the scraping plate 61 can scrape a thicker froth layer, which is conducive to improving the bubble scraping efficiency of the scraping plate 61.

[0100] Optionally, the scraping plate 61 is at least two layers and is arranged discretely along the up-down direction, each layer of the scraping plate 61 is multiple, and the multiple scraping plates 61 of each layer are arranged discretely along the circumferential direction of the tank body 4. The flotation device in the embodiment of the utility model can improve the separation effect of the mineralization froth and improve the bubble scraping efficiency of the scraping plate 61 by arranging the scraping plate 61 in at least two layers.

[0101] For two adjacent scraper layers 61, the number of scraper layers 61 in the upper layer can be greater than the number of scraper layers 61 in the lower layer. Understandably, the upper scraper layers 61 are arranged more densely, while the lower scraper layers 61 are arranged more sparsely. The sparsely arranged scraper layers 61 in the lower layer can sort the mineralized foam in the upper region 42, while the densely arranged scraper layers 61 in the upper layer can increase the amount of mineralized foam scraped when rotating, allowing for the scraping of a thicker foam layer and improving the foam scraping efficiency of the scraper layers 61.

[0102] Optionally, the scraper 61 can be adjusted along the axial position of the tank 4 so that the scraped layer of the scraper 61 is adapted to the mineral grade, thereby improving the compatibility and applicability of the flotation equipment and expanding its application range. For example, the scraper 61 can be mounted on the rotating shaft 21 using a clamp-type structure, and the position of the scraper 61 along the rotating shaft 21 can be adjusted up and down.

[0103] Optionally, the scraper 61 is provided with a third perforated hole (not shown) extending along its thickness direction. That is, the perforated structure can make the scraper 61 scrape bubbles more smoothly.

[0104] Optionally, a turbulence suppression grid 37 is provided in the tank 4. The turbulence suppression grid 37 is located in the lower region 41 and is arranged adjacent to the upper side of the lower region 41 to reduce the turbulence intensity in the connecting region 43 above the lower region 41 and improve the flotation effect and efficiency of the flotation equipment.

[0105] For example, such as Figure 3 As shown, the turbulence suppression grid 37 is located on 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.

[0106] Optionally, the position of the turbulence suppression grid 37 in the vertical direction is adjustable, so that the flotation equipment can adjust the turbulence suppression grid 37 to an appropriate position according to different flotation minerals or flotation effects, thereby expanding the application range of the flotation equipment and achieving better turbulence suppression effect.

[0107] In the description of this utility model, it should be understood that 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0108] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any meaning pertaining to the quantity of the features being described. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly. 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 defined.

[0109] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connection", "fixing" and the like should be interpreted in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. 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.

[0110] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact 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.

[0111] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 application. In the description, the illustrative representation 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, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0112] 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. Changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of the present application.

Claims

1. A multi-stage mineralization flotation apparatus, characterized by, The application relates to a multi-stage mineralization and flotation device. The device comprises a tank body, an inner cavity of the tank body comprising an upper region, a mechanical stirring region and a column separation region; a mineralization device comprising a rotor assembly and a mineralization tank, the mineralization tank having a mechanical stirring cavity constituting the mechanical stirring region, a pulp inlet being arranged at the bottom of the mineralization tank for feeding pulp into the mechanical stirring cavity, a pulp outlet being arranged at the top of the mineralization tank for discharging pulp, the mineralization tank being arranged in the tank body, the upper region being arranged above the mineralization tank, the column separation region comprising a lower region arranged below the mineralization tank and a communication region arranged between the outer peripheral wall of the mineralization tank and the inner peripheral wall of the tank body, the rotor assembly comprising a rotating shaft and a rotor, the lower end of the rotating shaft extending into the mechanical stirring cavity, the rotor being arranged in the mechanical stirring cavity and being mounted on the lower end of the rotating shaft so as to be driven to rotate by the rotating shaft and to perform mechanical stirring mineralization in the mechanical stirring cavity; an aeration device in communication with the lower region for filling the lower region with gas so as to perform column separation on the pulp entering the column separation region from the mechanical stirring cavity; a driving device arranged above the tank body and connected with the rotating shaft for driving the rotating shaft and the rotor to rotate; and a flow guide assembly, the upper end of the flow guide assembly being in communication with the upper region, the lower end of the flow guide assembly being in communication with the lower region, the flow guide assembly being used for transporting mineralization gas bubbles in the lower region to the upper region. The flow guide assembly is arranged in the tank body, the lower end of the flow guide assembly being arranged in the lower region, and the upper end of the flow guide assembly extending upwards through the communication region and into the upper region. The flow guide assembly is arranged outside the tank body, the lower end of the flow guide assembly being in communication with the lower region, and the upper end of the flow guide assembly being in communication with the upper region. The flow guide assembly comprises a flow guide pipe and a flow guide pump mounted on the flow guide pipe. The flow guide assembly comprises a flow guide pipe, the lower end of the flow guide pipe being in the shape of a horn.

2. The multi-stage mineralization flotation plant of claim 1, characterized in that, The upper region comprises a transport separation zone and a froth zone, the froth zone being arranged at the top of the upper region, and the transport separation zone being arranged at the substantially middle part of the upper region, the upper end of the flow guide assembly being in communication with the transport separation zone.

3. The multi-stage mineralization flotation apparatus of claim 1, wherein, The multi-stage mineralization and flotation device further comprises a pre-mineralization device arranged outside the tank body, the pre-mineralization device being used for pre-mineralizing pulp, and the pre-mineralization device being in communication with the pulp inlet of the mineralization tank.

4. The multi-stage mineralization flotation apparatus of claim 3, wherein, The mineralization device further comprises a plurality of turbulent flow enhancement plates, the plurality of turbulent flow enhancement plates being arranged in a circumferential direction of the mechanical stirring cavity and being in contact with the inner wall of the mechanical stirring cavity.

5. The multi-stage mineralization flotation apparatus of claim 1, wherein, ​ 6. The multi-stage mineralization flotation apparatus of claim 1, wherein, ​ 7. The multi-stage mineralization flotation apparatus of claim 1, wherein, ​ 8. The multi-stage mineralization flotation apparatus of claim 1, wherein, ​ 9. The multi-stage mineralization flotation apparatus of claim 1, wherein, The mineralization device further comprises a plurality of flow guide plates arranged in the communication region, the flow guide plates are arranged along the circumference of the mineralization tank, the upper surface of the flow guide plate is flush with the top surface of the mineralization tank, the lower surface of the flow guide plate is lower than the bottom surface of the mineralization tank, the flow guide plate comprises a flow guide plate body and a wing baffle arranged on the flow guide plate body, the flow guide plate body is positioned along the up-down direction, and the wing baffle extends downwardly and obliquely from the flow guide plate body.

10. The multi-stage mineralization flotation plant according to any of claims 1 - 9, characterized in that, The tank body is provided with a turbulence suppression grid located in the upper region and / or the lower region, and the position of the turbulence suppression grid along the up-down direction is adjustable.

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