Powerful mineralizing device for flotation and powerful mineralizing method thereof

Abstract

The invention belongs to the technical field of flotation equipment, particularly relates to a strong mineralizing device and method for flotation, and relates to a mineralizing device capable of strongly and uniformly mixing ore pulp, chemicals and bubbles, which can solve the problem of strong mineralization of a flotation column or a flotation machine. The invention discloses a strong mineralization device for a flotation column and an implementation method, particle bubbles in the flotation process collide and mineralize to form mineralized bubbles, the mineralized bubbles are completed in a relatively independent equipment space, the strong mineralization process is achieved, and accurate measurement and control and modular design of the mineralization process in the flotation process can be completely achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of mineral flotation equipment, and particularly to a powerful mineralizer for flotation and a powerful mineralization method thereof, which are applicable to mineralization systems of various flotation machines and flotation columns. Background Art

[0002] The flotation method is widely used for the separation of finely disseminated metallic minerals, non-metallic minerals, chemical raw material minerals, etc. The flotation process refers to a series of actions for separating valuable minerals from gangue minerals in a flotation device. Since these actions are mostly non-spontaneous physical and physicochemical processes, external energy is required for this process. Mineral particles adhere to the bubbles formed by collision and agitation comminution to form mineralized bubbles. Therefore, as the flotation process progresses, enhancing the bubble mineralization behavior becomes a core issue.

[0003] The dominant factor in the process of forming mineralized bubbles is the collision between particles and bubbles, and the collision probability is proportional to the concentrations of particles and bubbles; for fine particles, due to their low mass inertia, their collision probability with bubbles will be enhanced due to the increase in local fluid turbulence intensity or energy dissipation. The interaction between mineral particles and bubbles mainly occurs in the high-intensity agitation zone and is almost independent of time. The hydrodynamic environment and bubble particle size in the mineralization equipment significantly affect the particle-bubble collision probability. The higher the fluid turbulence degree and the smaller the bubble diameter, the higher the collision probability. Therefore, by adjusting the operating parameters of the mechanical agitation system, a suitable hydrodynamic environment can be controlled to promote the adhesion between particles and bubbles and improve the mineralization efficiency. Summary of the Invention

[0004] The present invention discloses a powerful mineralizer for flotation and a powerful mineralization method thereof to solve any one of the above and other potential problems in the prior art.

[0005] To achieve the above object, the technical solution of the present invention is: a powerful mineralizer for flotation, including a feed inlet, an air inlet, a support plate, a flange, a cylinder body, a baffle, a flange, a cover plate, a motor support, a motor, a rotating shaft, an outlet, an upper impeller, a middle impeller, a lower impeller, a draft tube, and an air inlet. A support is provided below the support plate, and the feed inlet and the air inlet are connected to the cylinder body through the support plate. The upper impeller, the middle impeller, and the lower impeller together with the rotating shaft form a mechanical agitation system. The rotating shaft is connected to the motor through a coupling, and the rotating shaft is connected to the cover plate through a mechanical seal.

[0006] Furthermore, the mechanical stirring system has three impellers, the upper impeller and the middle impeller have the same shape and size, both are turbine-type, 6 straight blades are installed on the annular horizontal disc, the lower impeller is axial flow type, 8 blades are installed, and the spacing between the impellers is 75%-85% of the diameter. The number of baffles is 4, and the width of the baffle is 5%-10% of the diameter of the cylinder.

[0007] Furthermore, the method for implementing the strong mineralization process of the equipment is that the compressed air is first pressed into the cylinder through the inflation port, and the feed sludge then enters the cylinder through the feed port. The high-speed rotating impeller of the mechanical stirring system in the cylinder produces a turbulent environment so that the slurry and air are strongly mixed to form mineralized bubbles. The speed range of the impeller is 1500-2500rpm, and the mineralized bubbles can be quickly discharged from the outlet.

[0008] Furthermore, the input pressure range of the slurry in the feed port is 0.05-0.09 MPa, and the inflation pressure range is 0.01-0.02 MPa.

[0009] The present invention has the following advantages: the equipment of the present invention utilizes strong mineralization, and the particle-bubble collision mineralization in the flotation process of the ore particles forms a particle-bubble union in a relatively independent equipment space, and has the advantages of a large range of aeration, high mineralization efficiency, and adaptability to a wide range of ore samples. The equipment of the present invention has been tested and has achieved continuous and rapid mineralization of the ore particles by adjusting the parameters such as the rotation speed and the aeration volume to control the mineralization behavior of the ore particles, which will play an important role in the efficient utilization of flotation. Description of the drawings:

[0010] Figure 1 This is a schematic diagram of the structure of the equipment for strong mineralization of the present invention;

[0011] Figure 2 for Figure 1 Schematic diagram of the structure of the upper / middle impeller;

[0012] Figure 3 for Figure 1 Schematic diagram of the structure and energy of vortices during mineralization;

[0013] Figure 4 for Figure 1 Process flow chart for achieving robust mineralization.

[0014] In the figure, 1 - feed inlet, 2 - first air inlet, 3 - support plate, 4 - flange, 5 - cylinder body, 6 - baffle plate, 7 - flange, 8 - cover plate, 9 - motor support, 10 - motor, 11 - rotating shaft, 12 - outlet, 13 - upper impeller, 14 - middle impeller, 15 - lower impeller, 16 - draft tube, 17 - second air inlet, 18 - pulp valve, 19 - electromagnetic flowmeter, 20 - pressure gauge, 21 - pressure gauge, 22 - thermal gas mass flowmeter, 23 - air valve, A - pulp, B - compressed air, C - mineralized pulp. Detailed implementation mode

[0015] Refer to Figures 1 to 4 The present invention is further described. A high - strength mineralizer and method for flotation include a feed inlet 1, an air inlet 2, a support plate 3, a flange 4, a cylinder body 5, a baffle plate 6, a flange 7, a cover plate 8, a motor support 9, a motor 10, a rotating shaft 11, an outlet 12, an upper impeller 13, a middle impeller 14, a lower impeller 15, a draft tube 16, an air inlet 17, a pulp valve 18, an electromagnetic flowmeter 19, a pressure gauge 20, a pressure gauge 21, a thermal gas mass flowmeter 22, an air valve 23, pulp A, compressed air B, and mineralized pulp C. A support is provided below the support plate 3. The feed inlet 1 and the air inlets 2 / 17 are connected to the cylinder body 5 through the support plate. The upper impeller 13, the middle impeller 14, and the lower impeller 15 together with the rotating shaft form a mechanical agitation system. The rotating shaft 11 is connected to the motor 10 through a coupling, and the rotating shaft 11 is connected to the cover plate 8 through a mechanical seal. The feed inlet 1 is connected to a slurry pump, the air inlets 2 / 17 are connected to an air compressor, and the outlet 12 is connected to a flotation machine or a flotation column.

[0016] First, the compressed air B presses air into the cylinder body 5 through the air inlets 2 / 17, and then the incoming pulp A enters the cylinder body 5 through the feed inlet 1. The input pressure range of the pulp A is 0.05 - 0.09 MPa, and the input pressure range of the compressed air B is 0.01 - 0.02 MPa. The high - speed rotating impellers in the mechanical agitation system in the cylinder body 5 generate a turbulent environment, causing the pulp and air to mix strongly to form mineralized bubbles. The rotational speed range of the impellers is 1500 - 2500 rpm, and the mineralized pulp can be quickly discharged from the outlet 12.

[0017] When the rotational speed of the impellers in the mechanical agitation system ≥ 1500 rpm, the situation of vortices in the mineralizer was studied through numerical simulation, and it was found that the number, energy, and structure of the vortices all meet the requirements, which is very conducive to particle collision and mineralization, as Figure 3 shown. The duration of the mineralization process was studied. As shown in Table 1, the mineralization time of the ore particles is about 5 s, which is very conducive to quickly completing the mineralization process, that is, improving the pulp treatment capacity.

[0018] Table 1 Average residence time of mineralized bubbles in the high - strength mineralizer

[0019]

[0020] The above has introduced in detail a strong mineralizer for flotation and its strong mineralization method provided by the embodiments of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

[0021] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" and "including" are open-ended terms, so they should be interpreted as "including / including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect. The subsequent description in the specification is the preferred implementation manner for implementing the present application, but the description is for the purpose of explaining the general principle of the present application and is not used to limit the scope of the present application. The protection scope of the present application shall be subject to what is defined by the appended claims.

[0022] It should also be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such a commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0023] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0024] The foregoing description has shown and described several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the application concept described herein through the above teachings or the techniques or knowledge in the relevant field. Any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A powerful mineralizer for flotation, Characterized in that: The powerful mineralizer includes a feed inlet, a first air inlet, a support plate, a flange, a cylinder body, a baffle plate, a flange, a cover plate, a motor bracket, a motor, a rotating shaft, an outlet, an upper impeller, a middle impeller, a lower impeller, a draft tube and a second air inlet; Among them, a bracket is arranged below the support plate, and the feed inlet, the first air inlet and the second air inlet are connected to the cylinder body through the support plate; the upper impeller, the middle impeller and the lower impeller together with the rotating shaft form a mechanical stirring system, the rotating shaft is connected to the motor through a coupling, and the rotating shaft is connected to the cover plate through a mechanical seal.

2. The powerful mineralizer according to claim 1, Characterized in that, The number of impellers of the mechanical stirring system is 3 layers. The shapes and sizes of the upper impeller and the middle impeller are the same, both are turbine type, 6 straight blades are installed on the annular horizontal disk, the lower impeller is axial flow type, 8 blades are installed, and the distance between the impellers is 75%-85% of the diameter.

3. The powerful mineralizer according to claim 1, Characterized in that, The number of the baffle plates is 4, and the width of the baffle plate is 5%-10% of the diameter of the cylinder body.

4. The powerful mineralizer according to claim 1, Characterized in that, Both the first air inlet and the second air inlet are arranged at the bottom of the cylinder body, welded on the support plate, and symmetrically distributed on both sides of the feed inlet.

5. A method for realizing a powerful mineralization process using the powerful mineralizer according to any one of claims 1-4, Characterized in that, The method specifically includes the following steps: S1) First, press air into the cylinder body through the first air inlet and the second air inlet; S2) Then feed the incoming pulp into the cylinder body through the feed inlet, and start the impeller rotating at high speed in the mechanical stirring system in the cylinder body to generate a turbulent environment so that the pulp and air are strongly mixed to form mineralized bubbles, wherein the rotation speed range of the impeller is 1500-2500 rpm.

6. The method according to claim 5, Characterized in that, The input pressure range of the pulp in the feed inlet is 0.05-0.09 MPa, and the intake air pressure range is 0.01-0.02 MPa.

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