Collision probability and desorption probability integrated measuring device suitable for mineral flotation

Abstract

The invention relates to the technical field of mineral flotation, in particular to a collision probability and desorption probability integrated measuring device suitable for mineral flotation. The device comprises a lower straight pipe, the lower portion of the lower straight pipe is sequentially connected with a bubble generation assembly and a particle injection assembly from bottom to top, the top end of the lower straight pipe is communicated with the bottom of a turbulence box, an inner cavity of the turbulence box is of a two-section structure with the wide lower portion and the narrow upper portion, and a bubble overflow channel and a turbulence area are formed by the narrow portion and the wide section of the inner cavity of the turbulence box respectively. A feeding pipe with an outlet extending to the turbulent flow area and a turbulent flow assembly with a power part extending to the turbulent flow area are mounted on the turbulent flow box. A physical carrier is provided for integrally obtaining the adhesion efficiency after collision of bubbles and particles and the desorption efficiency after adhesion, and the method has important significance in selecting a proper turbulence environment to strengthen collision of fine target mineral particles, reducing desorption of coarse target minerals and further improving the flotation recovery rate.

Description

Technical Field

[0001] The invention relates to the technical field of mineral flotation, in particular to an integrated collision probability and desorption probability measuring device suitable for mineral flotation. Background Art

[0002] Mineral flotation is a mineral processing technology that utilizes the differences in hydrophilicity and hydrophobicity of different mineral surfaces to separate useful minerals from gangue minerals at the gas-liquid-solid interface. The flotation recovery rate of a flotation device is a key indicator for evaluating flotation effectiveness. Prior art research on flotation recovery rates has mostly calculated the recovery rate using flotation results. This involves conducting mineral flotation tests using a flotation device, such as that described in Chinese Patent No. CN206392260U, entitled "A Mineral Flotation Device," and using the test results to provide feedback on the flotation recovery rate.

[0003] Because fine particles with a diameter of less than 20 μm tend to follow streamlines near bubbles and are less likely to collide and adhere to them, their recovery rate is low. Coarse particles with a diameter of more than 150 μm, affected by their own inertia and flow, tend to desorb from the bubble surface, resulting in a lower flotation rate constant than that of intermediate-sized particles. In other words, the adhesion efficiency of bubbles acting as carriers after collision with particles, as well as the efficiency of desorption after adhesion, are of great significance to the study of flotation recovery.

[0004] However, the aforementioned method of studying flotation recovery using a flotation device is clearly incapable of obtaining the two key parameters mentioned above. Therefore, constructing an ideal integrated experimental measurement device to study the probability of particle-bubble collision, adhesion, and desorption in flotation turbulence is of great significance for revealing the kinetic behavior, mechanism, and enhancement methods of mineral particle flotation, and is therefore urgently needed. Summary of the Invention

[0005] In order to avoid and overcome the technical problems existing in the prior art, the present invention provides an integrated measurement device for collision probability and desorption probability suitable for mineral flotation, which provides a physical carrier for integrated acquisition of the adhesion efficiency after collision between bubbles and particles and the desorption efficiency after adhesion. It is of great significance for selecting a suitable turbulent environment to enhance the collision of fine mineral particles, reduce the desorption of coarse-grained minerals, and thus improve the flotation recovery rate.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for measuring the integrated collision probability and desorption probability suitable for mineral flotation comprises a lower straight tube, the lower portion of which is connected in sequence from bottom to top to a bubble generating assembly and a particle injection assembly, the top end of which is connected to the bottom of a turbulence box, the inner cavity of which is wide at the bottom and narrow at the top, the narrow portion and the wide portion of the inner cavity of the turbulence box respectively constituting a bubble overflow channel and a turbulence zone, the turbulence box being provided with a feed pipe with an outlet extending to the turbulence zone and a spoiler assembly with a power unit extending to the turbulence zone; the measuring device further comprises a first acquisition and processing module and a second acquisition and processing module for collecting bubble and particle coverage data, wherein the first acquisition zone of the first acquisition and processing module is located in the upper inner cavity of the lower straight tube, and the second acquisition zone of the second acquisition and processing module is located in the upper portion of the overflow channel.

[0008] As a further solution of the present invention: the turbulence box is composed of an outer cup body and an inner cup body arranged coaxially and spaced apart, the area between the bottom of the inner cup body and the bottom of the inner cavity of the outer cup body constitutes a turbulence zone, and the area between the outer wall of the inner cup body and the inner side wall of the outer cup body constitutes an overflow channel.

[0009] As a further solution of the present invention: the spoiler component is a motor whose output shaft is coaxially arranged with the inner cup body, and an impeller is coaxially fixed on an extension section of the output shaft of the motor extending to the turbulent zone.

[0010] As a further solution of the present invention: the bottom of the outer cup body has a first discharge port.

[0011] As a further solution of the present invention: it also includes a recovery tank penetrated by the turbulence box, the penetration point of the recovery tank by the turbulence box is sealed with the outer wall of the turbulence box, and the notch of the recovery tank is located above the bubble overflow channel.

[0012] As a further solution of the present invention: the bottom of the recovery tank has a second discharge port.

[0013] As a further solution of the present invention: the upper portion of the bubble overflow channel is in an outwardly inclined structure; the upper portion of the lower straight tube is in a gradually closing structure.

[0014] As a further solution of the present invention: the first acquisition and processing module and the second acquisition and processing module both include a high-speed camera, an illumination light source, and a control processor connected to the high-speed camera.

[0015] As a further solution of the present invention, the collision and adhesion probability of particles and bubbles is obtained according to the following steps:

[0016] Fill the lower straight pipe with water, and inject water into the inner cavity of the turbulence box so that the liquid level exceeds the second collection area;

[0017] Add particles with uniform particle size and known total mass, average density of particles and average particle size of particles into the turbulent zone through a feed pipe, and start the flow disturbance component and the bubble generating component;

[0018] The first acquisition and processing module acquires photos of all bubbles passing through the first acquisition area during a test time period, and processes the photos to obtain an average diameter of the bubbles in all photos acquired by the first acquisition and processing module;

[0019] The second acquisition and processing module collects photos of all bubbles and particles adhering to the second acquisition area during the test time period, and processes the photos to obtain an average coverage area of ​​the particles on the bubbles in all photos collected by the second acquisition and processing module;

[0020] The average diameter of the bubbles and the average coverage area of ​​the particles on the bubbles are input into the collision adhesion probability calculation model to obtain the collision adhesion probability between the particles and the bubbles. The collision adhesion probability calculation model is specifically as follows:

[0021]

[0022] Where P is the collision and adhesion probability between particles and bubbles, dimensionless;

[0023] A cov2 The average coverage area of ​​particles on bubbles in all photos collected by the second acquisition and processing module, in m 2 ;

[0024] C p is the particle number density in the turbulent zone, in m -3 ;

[0025] d p is the average particle size of the added particles, in m;

[0026] d b The average diameter of bubbles in all photos collected by the first collection and processing module, in meters;

[0027] h is the height of the turbulent zone, in meters.

[0028] As a further solution of the present invention, the probability of particle desorption on the bubble is obtained by the following steps:

[0029] Fill the lower straight pipe with water, and inject water into the inner cavity of the turbulence box so that the liquid level exceeds the second collection area;

[0030] Add particles with uniform particle size and known average density and average particle size to the lower part of the downward straight pipe through the particle injection assembly;

[0031] Start the spoiler component and start the particle injection component;

[0032] The first acquisition and processing module collects photos of all bubbles and particles attached thereto passing through the first acquisition area during a test time period, and processes the photos to obtain an average coverage area of ​​the particles on the bubbles in all photos collected by the first acquisition and processing module;

[0033] The second acquisition and processing module collects photos of all bubbles and particles adhering to the second acquisition area during the test time period, and processes the photos to obtain an average coverage area of ​​the particles on the bubbles in all photos collected by the second acquisition and processing module;

[0034] The average coverage area of ​​particles on the bubbles in all the photos acquired by the first acquisition and processing module and the second acquisition and processing module is input into the desorption probability calculation model to obtain the desorption probability of particles on the bubbles. The desorption probability calculation model is specifically:

[0035]

[0036] Where, P d is the probability of particle desorption on the bubble, dimensionless;

[0037] A cov1 The average coverage area of ​​particles on bubbles in all photos collected by the first acquisition and processing module, in m 2 ;

[0038] A cov2 The average coverage area of ​​particles on bubbles in all photos collected by the second acquisition and processing module, in m 2 .

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. This application is different from the traditional single feeding form of the particle injection component at the bubble generating component, and adopts two particle feeding methods: feeding through a feed pipe at the turbulent zone and feeding through a particle injection component at the bubble generating component.

[0041] When acquiring the probability of particle-bubble collision and adhesion, particles are fed through the feed pipe, allowing the first acquisition and processing module to capture data on bubbles generated by the bubble generating assembly in the first collection zone on the lower straight tube, without any particle adhesion. Subsequently, after bubbles adhere to particles in the turbulent zone, the second acquisition and processing module captures data on bubbles and particles with particle adhesion that rise to the second collection zone. This allows for sampling both before and after bubble adhesion, providing hardware support for analyzing the probability of particle-bubble collision and adhesion.

[0042] When acquiring the probability of particle desorption on bubbles, feeding is achieved through a conventional particle injection assembly, and the bubbles generated by the bubble generation assembly directly adhere to the particles and transport them to the turbulent zone. Obviously, at this point, the first acquisition and processing module can obtain data on the bubbles adhering to the particles in the first acquisition zone on the lower straight tube. Thereafter, under the influence of turbulent flow in the turbulent zone, the bubbles will desorb particles and continue to flow to the second acquisition zone. Finally, the second acquisition and processing module is used to collect the bubble and particle data at the second acquisition zone b at this time. In other words, this application can achieve data sampling of bubbles after adhesion and desorption, thereby providing hardware support for analyzing the probability of particle desorption on bubbles.

[0043] That is, the present application can provide integrated hardware support for analyzing the probability of collision and adhesion between particles and bubbles and the probability of desorption of particles on bubbles, which is of great significance for selecting a suitable turbulent environment to enhance the collision of fine mineral particles, reduce the desorption of coarse minerals, and thus improve the flotation recovery rate.

[0044] 2. The turbulence box adopts a layout of outer cup and inner cup arranged coaxially and spaced apart, so that the bubble overflow channel has inlets in the circumferential direction of the turbulent zone. Therefore, no matter whether the turbulent zone adopts the turbulence form of reciprocating grid motion or the rotational turbulence form of impeller, the bubbles can enter the bubble overflow channel evenly and dispersedly, thereby avoiding the problem of bubbles being repeatedly impacted due to the single inlet of the bubble overflow channel.

[0045] 3. Based on the layout of the bubble overflow channel having inlets in the circumferential direction of the turbulent zone, the flow disturbance component adopts the impeller flow disturbance method so that the bubbles can enter the bubble overflow channel evenly and dispersedly.

[0046] 4. The arrangement of the recovery tank ensures that when water is added to the turbulence box, the water level can be above the bubble overflow channel, that is, bubbles can overflow the bubble overflow channel and then float above the water surface and burst, reducing the problem of particles falling back into the bubble overflow channel due to the bursting of bubbles in the bubble overflow channel.

[0047] 5. This application also provides a specific method for obtaining the collision adhesion probability between particles and bubbles and the probability of particle desorption on bubbles, as well as a specific collision adhesion probability calculation model and a desorption probability calculation model. It also solves the current lack of applicable formulas for collision adhesion and particle desorption, and is of great significance for selecting a suitable turbulent environment to enhance the collision of fine mineral particles, reduce the desorption of coarse-grained minerals, and thus improve the flotation recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of the present invention.

[0049] In the figure: 10, lower straight pipe; 20, bubble generating assembly; 30, particle injection assembly; 40, turbulence box; 41, outer cup body; 411, first discharge port; 42, inner cup body; 50, feed pipe; 60, spoiler assembly; 61, motor; 62, impeller; 70, recovery tank; 71, second discharge port; 80, first collection and processing module; 90, second collection and processing module; a, first collection area; b, second collection area; c, turbulence area; d, bubble overflow channel. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] For ease of understanding, the specific structure and working mode of the present invention are further described below with reference to the accompanying drawings:

[0052] The specific structure of the present invention refers to Figure 1 As shown, its main structure includes a lower straight tube 10 and the lower part of the lower straight tube 10 is connected to the bubble generating component 20 and the particle injection component 30 in sequence from bottom to top.

[0053] The bubble generating assembly 20 is a conventional structure in the prior art, such as a combination of a gas injection pump and a capillary tube, which will not be described in detail here. The particle injection assembly 30 is also a conventional structure in the prior art, such as a particle injection pump, which will not be described in detail here.

[0054] On the basis of the above, the present application abandons the traditional method of directly using the top of the lower straight pipe 10 as the overflow end of the flotation. Figure 1 As shown, the top end of the lower straight tube 10 in this application connects to the bottom of the turbulence box 40. The interior of the turbulence box 40 has a two-stage structure, with the narrow section and wide section forming the bubble overflow channel d and the turbulence zone c, respectively. Furthermore, the turbulence box 40 is equipped with a feed pipe 50, the outlet of which extends to the turbulence zone c, and a spoiler assembly 60, the power section of which extends to the turbulence zone c.

[0055] In addition, the measuring device also includes a first acquisition and processing module 80 and a second acquisition and processing module 90 for collecting bubble and particle data, wherein the first acquisition area a of the first acquisition and processing module 80 is located in the upper inner cavity of the lower straight tube 10, and the second acquisition area b of the second acquisition and processing module 90 is located in the upper part of the overflow channel d.

[0056] This application is different from the traditional single feeding form of the particle injection component 30 at the bubble generating component 20, and adopts two particle feeding methods: feeding the particle injection component 30 at the turbulent zone c through the feeding pipe 50 and feeding the particle injection component 30 at the bubble generating component 20.

[0057] When acquiring the probability of particle-bubble collision and adhesion, particles are fed through the feed pipe 50, allowing the first acquisition and processing module 80 to capture data on bubbles generated by the bubble generating assembly 20 in the first acquisition zone a on the lower straight tube 10 without particle adhesion. Subsequently, after bubbles adhere to particles in the turbulent zone c, the second acquisition and processing module 90 captures data on bubbles and particles that have adhered to particles and risen to the second acquisition zone b. This allows for sampling of both the pre- and post-bubble adhesion states, providing hardware support for analyzing the probability of particle-bubble collision and adhesion.

[0058] When acquiring the probability of particle desorption on bubbles, feed is achieved through a conventional particle injection assembly 30, and bubbles generated by the bubble generation assembly 20 directly adhere to particles and transport them to the turbulent zone c. Clearly, at this point, the first acquisition and processing module 80 can acquire data on bubble-particle adhesion in the first acquisition zone a on the lower straight tube 10. Subsequently, under the influence of the turbulent flow in the turbulent zone c, the bubbles will desorb particles and continue to flow toward the second acquisition zone b. Finally, the second acquisition and processing module 90 collects bubble and particle coverage data at this point in the second acquisition zone b. This means that the present application can sample bubble data both after adhesion and after desorption, providing hardware support for analyzing the probability of particle desorption on bubbles.

[0059] That is, the present application can provide integrated hardware support for analyzing the probability of collision and adhesion between particles and bubbles and the probability of desorption of particles on bubbles, which is of great significance for selecting a suitable turbulent environment to enhance the collision of fine mineral particles, reduce the desorption of coarse minerals, and thus improve the flotation recovery rate.

[0060] On the basis of the above, if Figure 1 As shown, the turbulence chamber 40 is composed of an outer cup 41 and an inner cup 42 arranged coaxially and spaced apart. The area between the bottom of the inner cup 42 and the bottom of the inner cavity of the outer cup 41 constitutes the turbulence zone c, and the area between the outer wall of the inner cup 42 and the inner sidewall of the outer cup 41 constitutes the overflow channel d. The layout of the outer cup 41 and the inner cup 42 ensures that the bubble overflow channel d has inlets circumferentially around the periphery of the turbulence zone c. Therefore, whether the turbulence zone c adopts the reciprocating grid motion disturbance or the rotating impeller 62 disturbance, bubbles can be evenly dispersed into the bubble overflow channel d, thereby avoiding the problem of bubbles being repeatedly impacted by a single inlet of the bubble overflow channel d.

[0061] Further, such as Figure 1As shown, the spoiler component 60 is a motor 61 whose output shaft is coaxially arranged with the inner cup body 42. The output shaft of the motor 61 extends to the extension section of the turbulent zone c and an impeller 62 is coaxially fixed thereon. The arrangement of the spoiler component 60 is based on the layout in which the bubble overflow channel d has an inlet in the circumferential direction of the turbulent zone c, so that the bubbles can enter the bubble overflow channel d in a uniformly dispersed manner.

[0062] On the basis of the above, if Figure 1 As shown, the bottom of the outer cup body 41 has a first discharge port 411 for discharging the remaining particles through the first discharge port 411 when the test is completed and the inner cavity of the outer cup body 41 is cleaned.

[0063] On the basis of the above, if Figure 1 As shown, the present application also includes a recovery tank 70 that is penetrated by the turbulence box 40. The penetration portion of the recovery tank 70 by the turbulence box 40 is sealed with the outer wall of the turbulence box 40, and the notch of the recovery tank 70 is located above the bubble overflow channel d. This layout allows the water level to be located above the bubble overflow channel d when water is poured into the turbulence box 40, that is, bubbles can overflow the bubble overflow channel d and then float above the water surface and burst, reducing the problem of particles falling back into the bubble overflow channel d due to the bursting of bubbles in the bubble overflow channel d. Furthermore, the upper part of the bubble overflow channel d is inclined outward, so that bubbles can better overflow the bubble overflow channel d.

[0064] In addition, if Figure 1 As shown, the bottom of the recovery tank 70 has a second discharge port 71 , and when the test is completed and the inner cavity of the recovery tank 70 is cleaned, the remaining particles are discharged through the first discharge port 411 .

[0065] On the basis of the above, if Figure 1 As shown, the upper portion of the lower straight tube 10 is in a gradually closing structure, which can reduce the particles in the turbulent zone c from falling back toward the lower straight tube 10 .

[0066] To facilitate further understanding of the present application for obtaining the probability of particles colliding and adhering to bubbles and the probability of particles desorbing from bubbles, the following provides specific steps for obtaining the probability of particles colliding and adhering to bubbles and the probability of particles desorbing from bubbles.

[0067] 1. Obtain the collision and adhesion probability of particles and bubbles by following the steps below:

[0068] The lower straight pipe 10 is filled with water, and water is injected into the inner cavity of the turbulence box 40 so that the liquid level thereof exceeds the second collection area b.

[0069] Particles with uniform particle size and known total mass, average density of particles and average particle size are added to the turbulent zone c through the feeding pipe 50, and the disturbance component 60 and the bubble generating component 20 are started.

[0070] In this step, for particles with uniform particle size and known total mass, average density and average particle size, the particle number density C in the turbulent zone c can be obtained by the formula p ,Right now

[0071]

[0072] Where C p is the particle number density in the turbulent region c, in m -3 ;

[0073] m p is the total mass of particles in the turbulent region c, in kg;

[0074] ρ P is the average particle density in the turbulent region c, in kg / m 3 ;

[0075] V is the volume of the turbulent region c, in m 3 ;

[0076] d p is the average particle size of all added particles, in m.

[0077] Thereafter, the first acquisition and processing module 80 acquires photos of all bubbles passing through the first acquisition area a during the test time period, and processes the photos to obtain an average diameter of the bubbles in all photos acquired by the first acquisition and processing module 80 .

[0078] The second acquisition and processing module 90 collects photos of all bubbles and particles attached thereto passing through the second acquisition area b during the test time period, and processes the photos to obtain the average coverage area of ​​the particles on the bubbles in all photos collected by the second acquisition and processing module 90 .

[0079] The average diameter of the bubbles and the average coverage area of ​​the particles on the bubbles are input into the collision adhesion probability calculation model to obtain the collision adhesion probability between the particles and the bubbles. The collision adhesion probability calculation model is specifically as follows:

[0080]

[0081] Where P is the collision and adhesion probability between particles and bubbles, dimensionless;

[0082] A cov2 is the average coverage area of ​​particles on the bubbles in all photos collected by the second collection and processing module 90, in m 2 , the A cov2 The value of is calculated by reconstructing the three-dimensional shape of the bubble through the rotation volume method based on the captured two-dimensional bubble image;

[0083] C pis the particle number density in the turbulent region c, in m -3 ;

[0084] d p is the average particle size of all particles added, in m;

[0085] d b is the average diameter of bubbles in all photos collected by the first collection and processing module 80, in meters;

[0086] h is the height of the turbulent region c, in meters.

[0087] The specific acquisition theory of the above collision adhesion probability calculation model is:

[0088] The average number of particles loaded on the surface of a single bubble N P for:

[0089]

[0090] The total number of particles N that can collide and adhere on the bubble's rising path pi for:

[0091]

[0092] The collision adhesion probability calculation model is obtained comprehensively:

[0093]

[0094] The definitions of the parameters in the formula have been explained above and will not be repeated here.

[0095] 2. Obtain the probability of particle desorption on bubbles by following the steps below:

[0096] The lower straight pipe 10 is filled with water, and water is injected into the inner cavity of the turbulence box 40 so that the liquid level thereof exceeds the second collection area b.

[0097] Particles are added to the lower portion of the downward straight pipe 10 through the particle injection assembly 30 .

[0098] The flow disturbance component 60 is started, and the particle injection component 30 is started, so that the bubbles adhere to the particles and enter the flow disturbance area c.

[0099] The first acquisition and processing module 80 collects photos of all bubbles and particles attached thereto passing through the first acquisition area a during a test period, and processes the photos to obtain an average coverage area of ​​the particles on the bubbles in all the photos collected by the first acquisition and processing module 80;

[0100] The second acquisition and processing module 90 collects photos of all bubbles and attached particles passing through the second acquisition area b during the test time period, and processes the photos to obtain an average coverage area of ​​the particles on the bubbles in all photos collected by the second acquisition and processing module 90;

[0101] The average coverage area of ​​particles on the bubbles in all the photos acquired by the first acquisition and processing module 80 and the second acquisition and processing module 90 is input into the desorption probability calculation model to obtain the desorption probability of particles on the bubbles. The desorption probability calculation model is specifically:

[0102]

[0103] Where, P d is the probability of particle desorption on the bubble, dimensionless;

[0104] A cov1 is the average coverage area of ​​particles on the bubbles in all photos collected by the first collection and processing module 80, in m 2 ;

[0105] A cov2 is the average coverage area of ​​particles on the bubbles in all photos collected by the second collection and processing module 90, in m 2 .

[0106] A cov1 and A cov2 The values ​​of are calculated based on the two-dimensional bubble image captured by reconstructing the three-dimensional shape of the bubble through the rotation volume method.

[0107] The specific acquisition theory of the above desorption probability calculation model is:

[0108] The average number N1 of particles loaded on the surface of a single bubble in the first collection area collected by the first collection processing module 80 is:

[0109]

[0110] The average number N2 of particles loaded on the surface of a single bubble in the second collection area collected by the second collection processing module 90 is:

[0111]

[0112] The probability of particle desorption on bubbles is the ratio of the number of particles desorbed from the surface of a single bubble to the total number of particles loaded on the bubble surface, that is:

[0113]

[0114] The definitions of the parameters in the formula have been explained above and will not be repeated here.

[0115] It is worth mentioning that the first acquisition processing module 80 and the second acquisition processing module 90 of the present application specifically include a high-speed camera, an illumination light source, and a control processor. The high-speed camera cooperates with the illumination light source to obtain photos of the acquisition area (this is prior art and will not be described in detail here. It is worth noting that since the parameters such as particle size in the above steps are all average values, the first acquisition area a can be a part of the cross-section or the entire cross-section on the upper branch pipe 10, and the second acquisition area b can be a part of the cross-section or the entire cross-section on the upper part of the bubble overflow channel d). The control processor then processes the acquired photos to obtain data such as the bubble diameter and the coverage area of ​​the particles on the bubbles required in the above steps. The logic of the control processor for processing and obtaining parameters is also prior art and will not be described in detail here.

[0116] Of course, it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also encompasses the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that fall within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0117] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0118] The technology, shape, and structure not described in detail in the present invention are all well-known technologies.

Claims

1. An integrated measurement device for collision probability and desorption probability suitable for mineral flotation, characterized in that: The invention comprises a lower straight tube (10), the lower part of which is connected to a bubble generating assembly (20) and a particle injection assembly (30) in sequence from bottom to top, the top of which is connected to the bottom of a turbulence box (40), the inner cavity of the turbulence box (40) is in a two-section structure, which is wide at the bottom and narrow at the top, and the narrow section and the wide section of the inner cavity of the turbulence box (40) respectively constitute a bubble overflow channel (d) and a turbulence zone (c), the turbulence box (40) is provided with a feed pipe (50) whose outlet extends to the turbulence zone (c) and a spoiler assembly (60) whose power part extends to the turbulence zone (c); the measuring device further comprises a first acquisition and processing module (80) and a second acquisition and processing module (90) for collecting bubble and particle coverage data, wherein the first acquisition zone (a) of the first acquisition and processing module (80) is located in the upper inner cavity of the lower straight tube (10), and the second acquisition zone (b) of the second acquisition and processing module (90) is located in the upper part of the overflow channel (d).

2. The integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to claim 1, characterized in that: The turbulence box (40) is composed of an outer cup body (41) and an inner cup body (42) arranged coaxially and spaced apart. The area between the cup bottom of the inner cup body (42) and the bottom of the inner cavity of the outer cup body (41) constitutes a turbulence zone (c), and the area between the outer wall of the inner cup body (42) and the inner side wall of the outer cup body (41) constitutes an overflow channel (d).

3. The integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to claim 2, characterized in that: The turbulence component (60) is a motor (61) whose output shaft is coaxially arranged with the inner cup body (42); an impeller (62) is coaxially fixed on the extension section of the output shaft of the motor (61) extending to the turbulence zone (c).

4. The integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to claim 2, characterized in that: The bottom of the outer cup body (41) is provided with a first discharge port (411).

5. The integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to any one of claims 1 to 4, characterized in that: The invention also includes a recovery groove (70) penetrated by the turbulence box (40), wherein the penetration portion of the recovery groove (70) by the turbulence box (40) is sealed with the outer wall of the turbulence box (40), and the notch of the recovery groove (70) is located above the bubble overflow channel (d).

6. The integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to claim 5, characterized in that: The bottom of the recovery tank (70) is provided with a second discharge port (71).

7. An integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to any one of claims 1 to 4, characterized in that: The upper portion of the bubble overflow channel (d) is in an outwardly inclined structure; the upper portion of the lower straight tube (10) is in a gradually closing structure.

8. An integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to any one of claims 1 to 4, characterized in that: The first acquisition and processing module (80) and the second acquisition and processing module (90) both include a high-speed camera, an illumination light source, and a control processor connected to the high-speed camera.

9. An integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to any one of claims 1 to 4, characterized in that: Follow these steps to obtain the collision and adhesion probability between particles and bubbles: Fill the lower straight pipe (10) with water, and inject water into the inner cavity of the turbulence box (40) so that the liquid level exceeds the second collection area (b); Adding particles with uniform particle size and known total mass, average density of particles and average particle size of particles into the turbulent zone (c) through the feed pipe (50), and starting the flow disturbance component (60) and the bubble generating component (20); The first acquisition and processing module (80) acquires photos of all bubbles passing through the first acquisition area (a) during a test time period, and processes the photos to obtain an average diameter of the bubbles in all photos acquired by the first acquisition and processing module (80); The second acquisition and processing module (90) collects photos of all bubbles and particles adhering to the bubbles passing through the second acquisition area (b) during a test time period, and processes the photos to obtain an average coverage area of ​​the particles on the bubbles in all the photos collected by the second acquisition and processing module (90); The collision adhesion probability calculation model is used to calculate the average diameter of the bubbles and the average coverage area of ​​the particles on the bubbles, thereby obtaining the collision adhesion probability of the particles and bubbles. The specific calculation model of the collision adhesion probability is: Where P is the collision and adhesion probability between particles and bubbles, dimensionless; A cov2 is the average coverage area of ​​particles on the bubbles in all the photos collected by the second collection and processing module (90), in m 2 ; C p is the particle number density in the turbulent region (c), in m -3 ; d p is the average particle size of all added particles, in m; d p is the average diameter of bubbles in all photos collected by the first collection and processing module (80), in meters; h is the height of the turbulent region (c), in meters.

10. An integrated measurement device for collision probability and desorption probability suitable for mineral flotation according to any one of claims 1 to 4, characterized in that: To obtain the probability of particle desorption on bubbles, follow these steps: Fill the lower straight pipe (10) with water, and inject water into the inner cavity of the turbulence box (40) so that the liquid level exceeds the second collection area (b); Adding particles with uniform particle size and known average density and average particle size to the lower part of the downward straight pipe (10) through the particle injection assembly (30); Starting the flow disturbance component (60) and starting the particle injection component (30); The first acquisition and processing module (80) collects photos of all bubbles and particles attached thereto that pass through the first acquisition area (a) during a test time period, and processes the photos to obtain an average diameter of the bubbles in all the photos collected by the first acquisition and processing module (80) and an average coverage area of ​​the particles on the bubbles in all the photos; The second acquisition and processing module (90) acquires photos of all bubbles and particles adhering to the bubbles passing through the second acquisition area (b) during a test period, and processes the photos to obtain an average diameter of the bubbles in all photos acquired by the second acquisition and processing module (90) and an average coverage area of ​​the particles on the bubbles in all photos; The average coverage area of ​​particles on the bubbles in all the photos acquired by the first acquisition processing module (80) and the second acquisition processing module (90) is input into the desorption probability calculation model to obtain the desorption probability of particles on the bubbles, wherein the desorption probability calculation model is specifically: Where, P d is the probability of particle desorption on the bubble, dimensionless; A cov1 is the average coverage area of ​​particles on bubbles in all photos collected by the first collection and processing module (80), in m 2 ; A cov2 is the average coverage area of ​​particles on the bubbles in all the photos collected by the second collection and processing module (90), in m 2 .

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