A forced pulp conditioning-eddy current mineralization-static separation mineral flotation system and method

Abstract

This invention belongs to the field of mineral flotation technology, specifically relating to a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system and method. It includes a slurry conditioning cylinder, a separation chamber, and a mineralization cylinder connected in sequence. The slurry conditioning cylinder contains a slurry conditioning pipeline; the separation chamber contains raw ore processing pipelines and middlings processing pipelines; and the mineralization cylinder contains an eddy current mineralization pipeline. The slurry conditioning pipeline, raw ore processing pipeline, eddy current mineralization pipeline, and middlings processing pipeline are connected sequentially. After minerals and flotation reagents are conditioned in the slurry conditioning cylinder to obtain raw ore slurry, it passes through the separation chamber to obtain middlings ore slurry, which then enters the eddy current mineralization pipeline. The middlings ore slurry returns to the separation chamber and enters the middlings processing pipeline for flotation separation. Finally, concentrate is collected at the top of the separation chamber. The mineral flow path designed in this invention enables efficient collisions between minerals of different particle sizes and slurry conditioning reagents, as well as between minerals and air bubbles, achieving effective flotation recovery.

Description

Technical Field

[0001] This invention belongs to the field of mineral flotation technology, specifically relating to a forced pulp conditioning-eddy current mineralization-static separation mineral flotation system and method. Background Technology

[0002] Flotation is currently the main method for processing fine-grained minerals. Using air bubbles as a carrier, it separates valuable minerals from gangue minerals in a complex gas-liquid-solid three-phase system based on the differences in hydrophobicity of mineral particle surfaces. During flotation, mineral particles and air bubbles are fully dispersed and collide with each other under the action of the fluid. Hydrophobic particles adhere to the surface of the air bubbles, forming a foam layer as the bubbles rise and are collected to obtain the concentrate. Hydrophilic particles, however, are difficult to adhere to the surface of the air bubbles and remain in the flotation cell as tailings.

[0003] Before flotation, a certain amount of collector is usually added to enhance the difference in hydrophobicity between particles, thereby improving flotation efficiency; this is called the pulp conditioning process. However, the reagent is difficult to disperse and mix in a static environment, lacking sufficient shear force and inertial force, making it difficult to collide and adsorb with particles. Furthermore, the mineralization effect between particles and air bubbles is crucial to the flotation process, and collision is the primary condition for mineralization. During mineral flotation and mineralization, the relationship between mineral properties and floatability exhibits a non-linear relationship: fine and coarse particles are difficult to float, while medium-sized particles float easily; weakly hydrophobic particles are difficult to float, while strongly hydrophobic particles float easily. The scientific reason is that fine particles are easily affected by fluid streamlines during the collision process, lack sufficient gravity and inertial force, and are difficult to break through the streamlines to collide with the bubbles; while coarse particles, due to their large mass and high kinetic energy, slide quickly on the bubble surface, have a short contact time, are difficult to adhere to, and are very easy to desorb under the influence of external forces; weakly hydrophobic particles, due to their small hydrophobic force, are difficult to break through the liquid film between the bubble and the particles to adhere, and their adhesion force is weak, making them very easy to desorb under the influence of fluid.

[0004] In recent years, with the continuous high consumption of mineral resources and the increasing depletion of high-grade ores, complex and difficult-to-process low-quality mineral resources will become the main targets for future mineral resource recovery. Complex surface properties and fine particle size are typical physical characteristics of low-quality mineral resources, directly leading to insufficient flotation recovery capacity and efficiency, necessitating the enhancement of their flotation process. Therefore, developing a flotation system that synergistically enhances the mineral slurry conditioning, mineralization, and separation processes, and achieving a rational distribution of turbulent energy during flotation to strengthen the flotation separation and recovery of low-quality mineral particles, is a pressing problem in the field of mineral flotation technology. Summary of the Invention

[0005] To address the aforementioned technical problems, one objective of this invention is to provide a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system.

[0006] The present invention adopts the following technical solution:

[0007] A forced slurry conditioning-eddy current mineralization-static separation mineral flotation system includes a forced slurry conditioner, a static separator, and an eddy current mineralizer connected in sequence. The forced slurry conditioner includes a slurry conditioning cylinder with a bottom-up slurry conditioning pipeline inside. The static separator has a separation chamber with a bottom-up raw ore processing pipeline and a bottom-up middlings processing pipeline intersecting each other inside. The eddy current mineralizer includes a mineralization cylinder with a bottom-up eddy current mineralization pipeline inside.

[0008] The outlet of the slurry conditioning pipeline connects to the inlet of the raw ore processing pipeline, the outlet of the raw ore processing pipeline connects to the inlet of the eddy current mineralization pipeline, and the outlet of the eddy current mineralization pipeline connects to the inlet of the middlings processing pipeline. Minerals and flotation reagents enter the slurry conditioning cylinder from the inlet of the slurry conditioning pipeline. After conditioning, the raw ore slurry is obtained and then enters the separation chamber through the inlet of the raw ore processing pipeline. It moves downward along the raw ore processing pipeline to obtain middlings slurry and enters the eddy current mineralization pipeline of the mineralization cylinder for enhanced mineralization treatment. After enhanced mineralization treatment, the middlings slurry returns to the separation chamber and enters the middlings processing pipeline for flotation separation. Finally, the concentrate is collected at the top of the separation chamber, and the flotation tailings are discharged through the tailings discharge pipe located at the bottom of the separation chamber.

[0009] Preferably, in the forced slurry conditioner, the inlet of the slurry conditioning pipeline is located on the bottom side wall of the slurry conditioning cylinder, and the outlet of the slurry conditioning pipeline is located on the top side wall of the slurry conditioning cylinder. The inlet of the slurry conditioning pipeline includes at least two slurry conditioning inlet pipes arranged opposite to each other, so that the minerals and flotation reagents enter the slurry conditioning cylinder in the form of a collision flow.

[0010] Preferably, in the eddy current mineralizer, the inlet of the eddy current mineralization pipeline is located on the bottom side wall of the mineralization cylinder, and the outlet of the eddy current mineralization pipeline is located on the top side wall of the mineralization cylinder. The inlet of the eddy current mineralization pipeline includes at least two mineralization inlet pipelines arranged opposite to each other, so that the middlings slurry enters the mineralization cylinder in the form of a collision flow.

[0011] Preferably, the inlet of the slurry conditioning pipeline includes a first slurry distribution trough arranged around the top side wall of the slurry conditioning cylinder. The first slurry distribution trough is connected to a vertically arranged first slurry distribution pipe. The number of first slurry distribution pipes matches the number of slurry inlet pipelines. Minerals and flotation reagents are transported to the inlet of the slurry conditioning pipeline through the first slurry distribution pipes to enhance collision.

[0012] Preferably, a small-diameter inner-lined jet pipe is provided at the connection between the slurry inlet pipe and the slurry preparation cylinder. The inner-lined jet pipe extends a set distance into the slurry preparation cylinder through the side wall of the slurry preparation cylinder to enhance the collision. Specifically, the diameter of the inner-lined jet pipe is 1 / 4 to 3 / 4 of the diameter of the slurry inlet pipe.

[0013] Preferably, spiral blades are also arranged at intervals on the inner wall of the first slurry distribution pipe to enhance the dispersion of the agent and improve the slurry conditioning effect. The width of the spiral blades is 1 / 4 to 1 / 2 of the diameter of the first slurry distribution pipe, and the height of a single spiral blade is 1 / 2 of the width of the spiral blade.

[0014] Preferably, the inlet of the eddy current mineralization pipeline includes a second slurry distribution trough arranged around the top side wall of the mineralization cylinder. The second slurry distribution trough is connected to a vertically arranged second slurry distribution pipe. The number of second slurry distribution pipes matches the number of mineralization inlet pipelines. The slurry is transported to the inlet of the eddy current mineralization pipeline through the second slurry distribution pipes to enhance the collision.

[0015] Preferably, a small-diameter inner-lined jet pipe is provided at the connection between the mineralization inlet pipe and the mineralization cylinder. The inner-lined jet pipe extends a set distance into the mineralization cylinder through the side wall of the mineralization cylinder to enhance the collision. Specifically, the diameter of the inner-lined jet pipe is 1 / 4 to 3 / 4 of the diameter of the mineralization inlet pipe.

[0016] Preferably, the inlet of the raw ore processing pipeline is located on the top side wall of the separation chamber. The inlet of the raw ore processing pipeline is connected to the feed pipe. The discharge end of the feed pipe extends into the separation chamber and bends towards the bottom of the separation chamber. The discharge end of the feed pipe is closed, and a through hole is opened on the pipe wall for the slurry to flow out.

[0017] Preferably, the inlet of the middlings processing pipeline is located on the bottom side wall of the separation chamber, and a vortex cone is provided inside the separation chamber. The vortex cone has a slope that is opposite to the inlet of the middlings processing pipeline. The middlings slurry enters the separation chamber from the inlet of the middlings processing pipeline and impacts the slope of the vortex cone to form a vortex.

[0018] Preferably, the inlet of the middlings processing pipeline is provided with a cyclone tube, which extends a set distance into the separation chamber, and the cyclone tube is set at a certain angle toward the cyclone cone to enhance the cyclone flow.

[0019] Preferably, the inlet of the middlings processing pipeline includes a middlings circulation feed trough arranged around the top side wall of the separation chamber. The middlings circulation feed trough is located below the inlet of the raw ore processing pipeline. The middlings circulation feed trough is connected to a vertically arranged middlings distribution pipe, through which the middlings slurry is transported to the inlet of the middlings processing pipeline, forming the starting point of the middlings processing pipeline.

[0020] Preferably, the outlet of the ore distribution pipe is provided with a cyclone tube, which extends a set distance into the separation chamber and is set at a certain angle toward the cyclone cone.

[0021] Preferably, the inlet of the middlings processing pipeline includes at least two inlets respectively connected to cyclone pipes, and the at least two cyclone pipes are arranged at the same deflection angle toward the cyclone cone to enhance the cyclone.

[0022] Preferably, the separation chamber is provided with a horizontally arranged screen plate, the size of which is adapted to the inner diameter of the separation chamber, and the screen plate is provided with through holes for slurry flow.

[0023] Preferably, at least three screen plates divide the separation chamber into interconnected partitions, wherein the first screen plate is disposed above the inlet of the raw ore processing pipeline, the second screen plate is disposed below the inlet of the raw ore processing pipeline, and the third screen plate is disposed above the inlet of the middlings processing pipeline; the main static separation area of ​​the separation chamber is formed between the second screen plate and the third screen plate.

[0024] Preferably, the vortex cone is a cone-shaped cylinder that runs vertically through the top and bottom. The size of the bottom of the vortex cone is adapted to the inner diameter of the separation chamber. The outlets of the tailings discharge pipe and the raw ore processing pipeline are both located below the bottom of the vortex cone. After flotation, the tailings enter the tailings discharge pipe through the cone-shaped cylinder, and the middlings enter the outlet of the raw ore processing pipeline through the cone-shaped cylinder.

[0025] Preferably, the bottom of the separation chamber is sloped towards the tailings discharge pipe.

[0026] Preferably, the outlet of the raw ore processing pipeline is located on the bottom side wall of the separation chamber. The bottom of the separation chamber is provided with a middlings inverted cone, which is a cone with its opening facing the bottom of the conical cylinder. The outlet of the raw ore processing pipeline is connected to the side wall of the middlings inverted cone. The middlings slurry obtained from the raw ore processing pipeline enters the middlings inverted cone from the conical cylinder and is then output from the outlet of the raw ore processing pipeline to the inlet of the eddy current mineralization pipeline.

[0027] Preferably, the opening of the middlings cone is provided with a baffle, and the baffle is gap-connected with the upper edge of the middlings cone, so that the slurry can enter the interior of the middlings cone.

[0028] Preferably, both the slurry conditioning cylinder and the mineralization cylinder are equipped with a stirring device. The stirring device includes a mineralization impeller for stirring, and the mineralization impeller is respectively positioned above the collision flow path between the slurry inlet pipes and above the collision flow path between the mineralization inlet pipes.

[0029] Preferably, both the slurry conditioning cylinder and the mineralization cylinder are further provided with annular plates inside, the edges of which are tightly connected to the inner wall of the cylinder, and the central hole of the annular plates is used for slurry flow.

[0030] Preferably, the mineralization cylinder contains three annular plates. The first annular plate is positioned between the inlet of the vortex mineralization pipeline and the mineralization impeller, forming a collision flow mineralization chamber for middlings with the bottom of the mineralization cylinder. The second annular plate is positioned below the outlet of the vortex mineralization pipeline, forming a discharge chamber for middlings slurry with the top of the mineralization cylinder. The central annular plate is positioned between the first and second annular plates, forming a dispersed circulation mineralization chamber between the central and second annular plates and a forced vortex mineralization chamber between the central and first annular plates.

[0031] The slurry preparation cylinder contains three annular plates, which are positioned in the same way as the mineralization cylinder.

[0032] Preferably, the stirring device further includes a dispersion circulation impeller, which is respectively disposed in the dispersion circulation mineralization chamber of the slurry preparation cylinder and the mineralization cylinder.

[0033] Preferably, the mineralizing impeller is a semi-open impeller, and the dispersing circulation impeller is an open impeller; the semi-open impeller is a radial impeller, that is, the blades are vertically arranged, so that the fluid moves in a horizontal plane after being agitated; the open impeller is an axially downward pressure impeller, that is, the blades are inclined, and the stirring energy provides axial kinetic energy to the fluid.

[0034] Preferably, the diameter of the central hole of the first annular plate is less than or equal to the inlet diameter of the mineralizing impeller, and the diameters of the central holes of the central annular plate and the second annular plate are both greater than the diameters of the mineralizing impeller blades and the diameters of the dispersing circulation impeller blades.

[0035] Preferably, inside the slurry preparation cylinder and the mineralization cylinder, baffles are provided on the top surface of the first annular plate and the bottom surface of the second annular plate. Several baffles are arranged radially around the central hole of the annular plate, with one long side of the baffle adhering to the inner wall of the cylinder, and the width of the baffle being shorter than the annular ring width of the annular plate. Liners are provided on the bottom and top surfaces of the central annular plate, with several linings arranged radially around the central hole of the annular plate, one long side of the lining adhering to the inner wall of the cylinder, and the width of the lining being shorter than the annular ring width of the annular plate.

[0036] Preferably, the baffle on the top surface of the first annular plate extends upward beyond the top surface of the mineralizing impeller, and the baffle on the bottom surface of the second annular plate extends downward beyond the bottom surface of the dispersing circulation impeller.

[0037] Preferably, the second slurry distribution pipe is located near one end of the second slurry distribution tank, and an inner-lined jet pipe is also provided inside the second slurry distribution pipe. The second slurry distribution tank feeds the slurry into the slurry distribution pipe through the inner-lined jet pipe. Preferably, an air conduit is also correspondingly provided on the second slurry distribution pipe. The air conduit is used to inject air into the slurry in the second slurry distribution pipe. Under the action of the inner-lined jet pipe, the air forms microbubbles that collide with the mineral particles, causing mineralization.

[0038] Preferably, the top of both the slurry mixing cylinder and the mineralization cylinder is sealed with a sealing cover, and the bottom of both the slurry mixing cylinder and the mineralization cylinder is provided with a discharge pipe for discharging residual slurry.

[0039] Preferably, both the forced slurry conditioner and the eddy current mineralizer are connected to a power unit, and the power unit is electrically connected to the stirring device in the forced slurry conditioner and the eddy current mineralizer.

[0040] Preferably, the power unit is a drive motor, which is mounted on a sealing cover plate at the top of the slurry mixing cylinder and / or the mineralization cylinder.

[0041] Preferably, the top opening of the separation chamber is set as an overflow port for foam concentrate, and the overflow concentrate is collected by a concentrate collection device. The concentrate collection device includes a collection tank with an inner diameter larger than the outer diameter of the overflow port. The bottom plate of the collection tank has a hole that matches the size of the overflow port, so that the concentrate collection device is fitted and fixed outside the overflow port. The bottom plate also has a discharge port for the concentrate to be discharged, and the bottom plate is inclined towards the discharge port.

[0042] Preferably, the concentrate collection device further includes a flushing system, which includes a flushing water ring, an inlet pipe connected to the flushing water ring, and a water valve installed on the flushing water ring. The flushing water ring is arranged in a ring along the inner side wall of the column, and a flushing water outlet is opened on the flushing water ring. Several flushing water outlets are directly opposite the bottom plate, and the water is used to flush the flotation concentrate to promote discharge.

[0043] Preferably, pumps are installed between the outlet of the slurry conditioning pipeline and the inlet of the raw ore processing pipeline, and between the outlet of the raw ore processing pipeline and the inlet of the eddy mineralization pipeline.

[0044] The second objective of this invention is to provide a flotation method for the aforementioned forced slurry conditioning-eddy current mineralization-static separation mineral flotation system, the method comprising the following steps:

[0045] S1. The minerals and flotation reagents are fed into the slurry preparation cylinder through the inlet of the slurry preparation pipeline. After the set liquid level is reached, the stirring device is turned on. The minerals and flotation reagents form a mixed slurry under the stirring action. The mixed slurry is discharged from the outlet of the slurry preparation pipeline.

[0046] S2. Close the tailings discharge pipe. The mixed slurry enters the separation chamber through the inlet of the raw ore processing pipeline, and then is discharged from the outlet of the raw ore processing pipeline and fed into the mineralization cylinder. After the mineralization cylinder is filled with mixed slurry, the mixed slurry continues to be discharged from the outlet of the vortex mineralization pipeline and fed into the inlet of the middlings processing pipeline to enter the separation chamber again.

[0047] S3. After the raw ore slurry in the separation chamber reaches the set liquid level, the air duct, stirring device and tailings discharge pipe are turned on. Air enters the mineralization cylinder and forms tiny bubbles that collide with mineral particles to mineralize. The slurry is then aerated to form an aerated ore slurry.

[0048] S4. The gas-bearing middlings slurry enters the separation chamber through the inlet of the middlings treatment pipeline. The microbubbles are released and collide with the mineral particles in the separation chamber to mineralize them. The low-density mineralized bubbles move toward the center of the separation chamber and float upwards, while the high-density unmineralized particles move toward the inner wall of the separation chamber and descend. The floating mineralized bubbles collide with the raw ore slurry entering the separation chamber in a countercurrent manner to mineralize it.

[0049] S5. The minerals that have not been mineralized by the microbubbles descend, and the low-density unmineralized minerals in the middle area of ​​the separation chamber are discharged through the outlet of the raw ore processing pipeline. The high-density unmineralized minerals in the surrounding area of ​​the separation chamber form tailings and are discharged through the tailings discharge pipe. S2-S4 are repeated, and the mineralized bubbles continuously form a stable foam layer at the top of the separation chamber. The foam layer overflows and is collected.

[0050] S6. After the flotation process is completed, stop feeding into the inlet of the slurry conditioning pipeline, close the tailings discharge pipe, turn off the drive motor, open the ore discharge pipe to discharge the residual slurry in the slurry conditioning cylinder, separation chamber and mineralization cylinder. After the liquid level in the mineralization cylinder is lower than the air duct inlet, close the air duct. After the residual slurry in the separation chamber is discharged, turn off the pump. After all the material is discharged, close the ore discharge pipe.

[0051] Preferably, the inlet of the middlings processing pipeline is located on the bottom side wall of the separation chamber. A vortex cone is installed inside the separation chamber. The vortex cone has a slope that is opposite to the inlet of the middlings processing pipeline. The middlings slurry enters the separation chamber through the inlet of the middlings processing pipeline and impacts the slope of the vortex cone to form a vortex. The vortex strengthens the collision between the mineral particles and bubbles and promotes the upward floating tendency of low-density mineralized bubbles.

[0052] Preferably, the foam layer is collected by a concentrate collection device located at the overflow port at the top of the separation chamber; the concentrate collection device includes a base plate sleeved on the outside of the overflow port at the top of the separation chamber, the base plate is inclined, and a discharge port for discharging mineralized foam is opened at the lowest end of the base plate; a water outlet is arranged above the base plate, and water from the water outlet is used to rinse the mineralized foam to promote discharge.

[0053] The beneficial effects of this invention are as follows:

[0054] 1) Flotation reagents and mineral particles enter the forced conditioning unit. Under the impact of fluid collisions and the strong stirring action of the impeller, the forced conditioning unit generates strong turbulence, further enhancing turbulent dissipation and inducing small-scale turbulent micro-vortices. This promotes the dispersion and mixing of flotation reagents and mineral particles, as well as the adsorption of flotation reagents on the surface of mineral particles, achieving fine particle conditioning. Throughout the conditioning cylinder, along the conditioning pipeline, collisional flow conditioning and eddy flow conditioning occur sequentially. The corresponding turbulent dissipation gradients are enhanced, while the turbulent vortex scale gradients are reduced, respectively strengthening the particle-reagent mixing process and the forced adsorption process during conditioning.

[0055] 2) Several spiral blades are installed in the first slurry distribution pipe to generate spiral shear flow, which enhances the shear dispersion of the reagent and promotes the breakage and dispersion of large-diameter reagents into small-diameter reagents, creating favorable initial conditions for the subsequent mixing and reagent adsorption processes.

[0056] 3) The forced slurry conditioner is divided into four chambers by three layers of annular plates, from low to high: the collision flow slurry conditioning chamber, the vortex forced slurry conditioning chamber, the dispersion circulation slurry conditioning chamber, and the discharge chamber. The vortex forced slurry conditioning chamber generates strong turbulence through high-speed rotation of a semi-open impeller (radial), inducing small-scale turbulent micro-vortices. This further enhances the dispersion of the reagent and generates tiny droplets, while also facilitating the forced adsorption of tiny droplets on the particle surface. The dispersion circulation slurry conditioning chamber generates axial downward pressure through an open impeller (axial downward pressure flow) located in this chamber, causing the slurry to tend to circulate downwards, increasing the residence time of mineral particles in the cylinder, and increasing the frequency of their collision with reagent droplets.

[0057] 4) After slurry conditioning, the slurry fills the static separator and vortex mineralizer. The raw ore slurry flows counter-currently downwards along the raw ore processing pipeline, passing through the static counter-current mineralization zone formed by multiple screen plates. Easily floating coarse particles undergo counter-current mineralization with bubbles, forming mineralized bubbles that float and are recovered. Particles that do not adhere to the bubble surface continue to move downwards with the fluid, passing through the vortex mineralization zone at the vortex cone. The turbulence intensity and dissipation of the slurry increase, enhancing the collision and adhesion of medium-sized particles with bubbles. Fine particles that still do not adhere to the bubble surface continue to move downwards, transported to the vortex mineralizer through the middlings discharge pipe. Inside the vortex mineralizer, strong turbulence is formed under the collision of fluids and the strong stirring action of the impeller. Turbulent dissipation is further enhanced, inducing the generation of small-scale turbulent micro-vortices, forcing fine mineral particles to break through the fluid streamline constraints and collide and adhere with bubbles, thus achieving the mineralization of fine particles and bubbles. In this invention, mineralization occurs sequentially along the flow direction in the static separator and eddy current mineralizer devices, namely countercurrent mineralization, swirling mineralization, and eddy current mineralization. The corresponding turbulent dissipation steps are enhanced, and the turbulent eddy size steps are reduced, thereby adapting to the mineralization flotation of mineral particles of different sizes. Through the stepwise adaptation of turbulent energy, efficient flotation recovery of mineral particles of various particle sizes is achieved.

[0058] 5) A swirling cone is installed inside the separation chamber. On the one hand, the circulating middlings create a swirling centrifugal force field in the swirling cone region, constructing a swirling mineralization zone with turbulence intensity between the countercurrent mineralization zone of weak turbulence and the eddy mineralization zone of strong turbulence, thus enhancing the collision and adhesion between medium-sized particles and bubbles. On the other hand, under the action of the swirling centrifugal force field, low-density mineralized bubbles move towards the central region of the static separator, which is conducive to the separation of mineralized bubbles from unmineralized particles, thus enhancing the separation process. In addition, below the swirling cone, under the action of the swirling centrifugal force field, relatively low-density middlings particles move towards the central region of the static separator and sink to the middlings inverted cone and are transported to the eddy mineralizer for forced recovery, while relatively high-density tailings particles move towards the wall of the static separator and are collected by the tailings discharge pipe to form tailings, achieving a reasonable separation of middlings and tailings.

[0059] 6) The static separator is equipped with multiple layers of screen plates, which effectively isolates the influence of the slurry feed and slurry swirling motion in the swirling zone on the flow field of the countercurrent mineralization zone, creating a relatively static countercurrent mineralization zone. This provides a suitable flow field environment for the countercurrent mineralization of coarse particles and bubbles, and also facilitates the smooth upward floating and separation of mineralized bubbles.

[0060] 7) The inlet end of the eddy current mineralizer is set on the second slurry distribution tank, which is connected to the second slurry distribution pipe. By setting an inner-lined jet pipe at the connection between the second slurry distribution pipe and the second slurry distribution tank, a strong shear slurry jet is formed in the second slurry distribution pipe. This can further promote the air supplied by the air duct on the upper outer wall of the second slurry distribution pipe to disperse and break into micro bubbles under strong shear, thereby enhancing air dispersion.

[0061] 8) The mineralization cylinder is divided into four chambers by three annular plates, arranged from bottom to top: a collision flow mineralization chamber, a vortex forced mineralization chamber, a dispersion circulation mineralization chamber, and a discharge chamber. The vortex forced mineralization chamber generates strong turbulence through the high-speed rotation of the mineralization impeller, inducing small-scale turbulent micro-vortices. This further enhances bubble dispersion and generates microbubbles, while also facilitating the forced breakthrough of fine mineral particles by fluid streamlines, thus strengthening their mineralization with the bubbles. The dispersion circulation mineralization chamber generates axial downward pressure flow through the agitation of the dispersion circulation impeller, promoting a downward circulation of the slurry, increasing the residence time of mineral particles within the cylinder, and raising the frequency of their collisions with bubbles.

[0062] 9) In the eddy current forced mineralization chamber, the inlet pipe generates a collision flow at the bottom of the eddy current mineralizer, which on the one hand enhances turbulent dissipation, induces small-scale eddies, and strengthens the collision and adhesion of fine mineral particles with bubbles; on the other hand, it avoids the accumulation of middlings slurry at the bottom of the eddy current mineralizer, which would affect the working effect.

[0063] 10) The eddy current mineralizer is a confined space with a closed top. During operation, a high-pressure solution environment is formed inside the eddy current mineralizer, which further enhances the concentration of energy and strengthens turbulent motion. In addition, the high-pressure solution environment enhances the solubility of air, which is conducive to the generation of micro and nano bubbles, strengthens air dispersion and interfacial nano bubble bridging, and provides suitable bubble carriers and interfacial mineralization conditions for the mineralization flotation of fine minerals. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of the structure of the device of the present invention;

[0065] Figure 2 for Figure 1 Enlarged view of Part I;

[0066] Figure 3 This is a schematic diagram of the structure of a mineralized impeller;

[0067] Figure 4 This is a schematic diagram of the structure of a distributed circulation impeller;

[0068] Figure 5 This is a schematic diagram of the sieve plate structure;

[0069] Figure 6 A schematic diagram showing the installation of spiral blades inside the first slurry distribution pipe.

[0070] The meanings of the symbols marked in the figure are as follows:

[0071] 10-Slurry preparation cylinder body; 11-Slurry preparation inlet pipe; 111-Inner lining jet pipe

[0072] 20-Separation chamber; 21-Infeed pipe; 211-Through hole; 22-Tails discharge pipe; 221-Inclined plate

[0073] 23-Swirl Cone 231-Swirl Tube

[0074] 24-Sieve plate 241-Through hole 24a-First sieve plate 24b-Second sieve plate 24c-Third sieve plate

[0075] 25-Zhongkuang Inverted Cone 251-Block

[0076] 30-Mineralization cylinder; 31-Mineralization inlet pipeline

[0077] 32-Agitator; 321-Mineralizing Impeller; 322-Dispersion Circulation Impeller

[0078] 33-Annular plate; 331-Central hole; 33a-First annular plate; 33b-Second annular plate; 33c-Central annular plate

[0079] 341-Baffle plate; 342-Liner plate; 35-Sealing cover plate; 36-Mineral discharge pipe; 37-Drive motor

[0080] 38-Air duct; 381-Gas distribution pipe

[0081] 40a - First slurry distribution tank; 41a - First slurry distribution pipe

[0082] 40b - Second slurry distribution tank; 41b - Second slurry distribution pipe

[0083] 50 - Mid-grade ore circulating feed trough; 51 - Mid-grade ore distribution pipe

[0084] 60-Concentrate collection device; 61-Collection tank; 62-Bottom plate; 621-Concentrate discharge port

[0085] 70-Flushing system; 71-Flushing water ring; 72-Inlet pipe

[0086] 80-pump

[0087] X1 - Inlet of grouting pipeline X2 - Outlet of grouting pipeline

[0088] A1 - Inlet of the raw ore processing pipeline; A2 - Outlet of the raw ore processing pipeline

[0089] B1 - Inlet of the eddy current mineralization pipeline; B2 - Outlet of the eddy current mineralization pipeline

[0090] Inlet of C1-Mid-Mineral Processing Pipeline Detailed Implementation

[0091] The technical solution of the present invention will be described in more detail below with reference to the embodiments and accompanying drawings:

[0092] Example 1

[0093] like Figures 1-4 As shown, a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system is characterized by comprising a forced slurry conditioner, a static separator, and an eddy current mineralizer connected in sequence. The forced slurry conditioner includes a slurry conditioning cylinder 10, in which a slurry conditioning pipeline runs from bottom to top. The static separator has a separation chamber 20, in which a raw ore processing pipeline runs from top to bottom and a middlings processing pipeline runs from bottom to top, both of which are intertwined. The eddy current mineralizer includes a mineralization cylinder 30, in which an eddy current mineralization pipeline runs from bottom to top.

[0094] The slurry preparation cylinder 10, the separation chamber 20, and the mineralization cylinder 30 are all cylindrical spaces. Depending on the flow direction of each pipeline, the structure of the slurry preparation cylinder 10 and the mineralization cylinder 30 can adopt the same structure.

[0095] The forced slurry conditioner 10 is closed at both ends. The inlet X1 of the slurry conditioning pipeline is located on the bottom side wall of the slurry conditioning cylinder 10, and the outlet X2 of the slurry conditioning pipeline is located on the top side wall of the slurry conditioning cylinder 10. The inlet X1 of the slurry conditioning pipeline includes at least two opposing slurry conditioning inlet pipes 11, allowing minerals and flotation reagents to enter the slurry conditioning cylinder 10 in the form of a collision flow. The eddy current mineralizer is closed at both ends. The inlet B1 of the eddy current mineralization pipeline is located on the bottom side wall of the mineralization cylinder 30, and the outlet B2 of the eddy current mineralization pipeline is located on the top side wall of the mineralization cylinder 30. The inlet B1 of the eddy current mineralization pipeline includes at least two opposing mineralization inlet pipes 31, allowing middlings slurry to enter the mineralization cylinder 10 in the form of a collision flow. Both the slurry conditioning cylinder 10 and the mineralization cylinder 30 are also equipped with discharge pipes 36 at the bottom for discharging residual slurry from the cylinder after slurry conditioning / mineralization.

[0096] The aforementioned slurry inlet pipe 11 and mineralization inlet pipe 31 are both positioned opposite each other and oriented towards the central axis of the slurry / mineralization cylinder, allowing the slurry to enter the cylinder in the form of a collisional flow. This collisional flow enhances turbulent dissipation, induces small-scale eddies, and strengthens the collision and adhesion between minerals and flotation reagents, and between minerals and bubbles. Furthermore, it prevents minerals from accumulating at the bottom of the cylinder, which would negatively impact the working efficiency.

[0097] The outlet X2 of the slurry preparation pipeline is connected to the inlet A1 of the raw ore processing pipeline via the slurry pump 80. The outlet A2 of the raw ore processing pipeline is connected to the inlet B1 of the eddy mineralization pipeline via the circulation pump 80. The outlet B2 of the eddy mineralization pipeline is connected to the inlet C1 of the middlings processing pipeline, so that the middlings slurry discharged from the raw ore processing pipeline can circulate in the static separator and the eddy mineralizer.

[0098] Minerals and flotation reagents enter the slurry conditioning pipeline through inlet X1. After conditioning, the raw ore slurry enters the separation chamber 20 through inlet A1 of the raw ore processing pipeline. It moves downward along the raw ore processing pipeline to obtain some tailings and middlings. The middlings enter the vortex mineralization pipeline of the mineralization cylinder 30 for enhanced mineralization. The middlings slurry after enhanced mineralization returns to the separation chamber 20 and enters the middlings processing pipeline for flotation separation. In the above process, the raw ore slurry in the separation chamber 20 is continuously processed by the raw ore processing pipeline. The obtained middlings enter the mineralization cylinder 30 through outlet A2 of the raw ore processing pipeline. The resulting middlings slurry circulates multiple times in the separation chamber 20 and the mineralization cylinder 30. The flotation concentrate foam continuously and stably appears at the top of the separation chamber 20. The concentrate foam is collected, and the flotation tailings are discharged through the tailings discharge pipe 22.

[0099] Minerals and flotation reagents are mixed and sized in a slurry conditioning cylinder 10. An agitator 32 is installed inside the slurry conditioning cylinder 10. The agitator 32 includes a mineralizing impeller 321 for agitation. The mineralizing impeller 321 is a semi-open impeller and is located above the collision flow path between the slurry inlet pipes 11. The mineralizing impeller 321 agitates the minerals and flotation reagents to collide and mix them, resulting in a raw ore slurry that can be used for flotation.

[0100] The inlet B1 of the eddy mineralization pipeline is connected to the air duct 38, which injects air into the slurry to help the raw ore / mid-ore slurry undergo eddy-enhanced mineralization in the mineralization cylinder 30.

[0101] The mineralization cylinder 30 is also equipped with a stirring device 32. The stirring device 32 includes a mineralization impeller 321 for stirring. The mineralization impeller 321 is a semi-open impeller, which is set above the collision flow path between the mineralization inlet pipes 11. The mineralization impeller 321 stirs the air entering the raw ore / medium ore slurry to further disperse and form micro bubbles, so that the raw ore / medium ore slurry is mineralized to form gas-containing middlings ore slurry.

[0102] The gas-bearing middlings slurry enters the separation chamber 20. At the inlet C1 of the middlings processing pipeline, a vortex cone 23 is installed inside the separation chamber 20. The vortex cone 23 has a slope that is opposite to the inlet C1 of the middlings processing pipeline. The middlings slurry enters the separation chamber 20 from the inlet C1 of the middlings processing pipeline and impacts the slope of the vortex cone 23 to form a vortex.

[0103] To enhance the swirling flow, a swirling pipe 231 is also installed at the inlet C1 of the middlings processing pipeline. The swirling pipe 231 is positioned at a certain angle towards the swirling cone 23. At least two swirling pipes 231 are positioned opposite each other on the side wall of the separation chamber 20 at the inlet C1 of the middlings processing pipeline. Due to the similar angle of the multiple swirling pipes 231, the impact on the swirling cone 23 can greatly enhance the swirling flow. During this process, the middlings slurry forms a swirling centrifugal force field in the area where the swirling cone 23 is located, which can enhance the collision and adhesion between mineral particles and bubbles. At the same time, under the action of the swirling centrifugal force field, low-density mineralized bubbles move towards the central area of ​​the static separator, which is conducive to the separation of mineralized bubbles from unmineralized particles and enhances the separation process.

[0104] To ensure the flow of slurry, the swirl cone 23 is designed as a cone-shaped cylinder that runs vertically through the swirl cone. The size of the bottom of the swirl cone 23 is matched with the inner diameter of the separation chamber 20, so that the tailings after flotation enter the tailings discharge pipe 22 through the cone-shaped cylinder, and the middlings enter the outlet A2 of the raw ore processing pipeline through the cone-shaped cylinder.

[0105] Furthermore, a middlings inverted cone 25 is installed below the swirl cone 23. The middlings inverted cone 25 is cone-shaped with its opening facing the bottom of the cone. The feed end of the raw ore processing pipeline outlet A2 is located on the side wall of the middlings inverted cone 25. Under the action of the swirling centrifugal force field, the relatively low-density middlings particles move towards the central area of ​​the static separator and sink into the middlings inverted cone 25. They are then transported to the vortex mineralizer for forced recovery through the raw ore processing pipeline outlet A2. Meanwhile, the relatively high-density tailings particles move towards the wall of the static separator and are collected by the tailings discharge pipe 22 to form tailings, thus achieving a reasonable separation of middlings and tailings.

[0106] A baffle 251 can also be provided on the opening of the inverted cone 25 for medium ore. The baffle 251 is connected to the upper edge of the inverted cone 25 for medium ore, so that the medium ore particles can enter the interior of the inverted cone 25 for medium ore.

[0107] To facilitate tailings discharge, the bottom of the separation chamber 20 is inclined toward the tailings discharge pipe 22. In a specific embodiment, the inclined part can be formed by an inclined plate 221 set at the bottom of the separation chamber 20, and the base of the middlings inverted cone 25 passes through the inclined plate 221 or forms a stable connection with the inclined plate 221.

[0108] In the separation chamber 20, the inlet A1 of the raw ore processing pipeline is connected to the feed pipe 21. The discharge end of the feed pipe 21 extends into the separation chamber 20 and bends along the axis towards the bottom of the separation chamber 20 at the axis of the separation chamber 20. The discharge end of the feed pipe 21 is closed, and a through hole 211 is opened on the pipe wall to allow the slurry to flow out.

[0109] The tops of both the slurry conditioning cylinder 10 and the mineralization cylinder 30 are sealed by sealing cover plates 35. Both the vortex slurry conditioner and the vortex mineralizer are connected to a power unit, which is electrically connected to the stirring device 32. Furthermore, the power unit is a drive motor 37, which is mounted on the sealing cover plate 35 at the top of the slurry conditioning cylinder 10 and / or the mineralization cylinder 30.

[0110] In this embodiment, the air duct 38 can be any device capable of filling with gas, and the present invention does not impose any specific limitations. The stirring device 32 is a rod with a stirring shaft, which is arranged along the axis of the mineralization cylinder 30. The mineralization impeller 321 is arranged at one end of the stirring shaft, and the other end of the stirring shaft is connected to the drive motor 37. The rotation of the stirring shaft drives the mineralization impeller 321 to work. In the mineralization cylinder 30, at the position between the outlet B2 of the eddy current mineralization pipeline and the mineralization impeller 321, a dispersion circulation impeller 322 is also arranged on the stirring shaft of the stirring device 32. The dispersion circulation impeller 322 is an open axial downward pressure impeller, that is, its blades are inclined, and it can provide axial kinetic energy to the fluid after stirring; the stirring device 32 in the slurry preparation cylinder 10 can be arranged in the same way.

[0111] The concentrate overflowing from the top overflow port of the separation chamber 20 is collected by the concentrate collection device 60. The concentrate collection device 60 includes a collection tank 61 with an inner diameter larger than the outer diameter of the overflow port. The bottom plate 62 of the collection tank 61 has a hole that matches the size of the overflow port, so that the concentrate collection device 60 is fitted and fixed to the outside of the overflow port. The bottom plate 62 also has a discharge port 621 for the concentrate to be discharged. The bottom plate 62 is inclined toward the discharge port 621. The overflowing foam concentrate flows into the collection tank 61 and flows along the inclined bottom plate 62 toward the discharge port 621.

[0112] The concentrate collection device 60 is also equipped with a flushing system 70, which includes a flushing water ring 71, an inlet pipe 72 connected to the flushing water ring 71, and a water valve installed on the flushing water ring 71. The flushing water ring 71 is arranged in a ring along the inner side wall of the column, and flushing water outlets are opened on the flushing water ring 71. Several flushing water outlets are directly opposite the bottom plate 62, and the water is used to flush the foam concentrate on the bottom plate 621 to promote drainage.

[0113] Example 2

[0114] Based on Example 1, the separation chamber 20 is further provided with a horizontally arranged sieve plate 24, such as... Figure 5 As shown, the size of the sieve plate 24 is adapted to the inner diameter of the separation chamber 20, and through circular holes 241 for slurry flow are evenly opened on the sieve plate 24.

[0115] In this embodiment, three sieve plates 24 are used to divide the separation chamber 20 into interconnected zones. The first sieve plate 24a is positioned above the inlet A1 of the raw ore processing pipeline, the second sieve plate 24b is positioned below the inlet A1 of the raw ore processing pipeline, and the third sieve plate 24c is positioned above the inlet C1 of the middlings processing pipeline. The area between the second sieve plate 24b and the third sieve plate 24c forms the main static separation zone of the separation chamber 20 due to the counter-current mineralization of raw ore particles from the raw ore pipeline and microbubbles from the gas-bearing middlings slurry.

[0116] By isolating the slurry swirling motion in the area where the swirl cone 23 is located in the separation chamber 20 by setting a sieve plate, the influence of the slurry swirling motion on the flow field of the countercurrent mineralization zone is created, thus creating a relatively static countercurrent mineralization zone for the raw ore pipeline. On the one hand, this provides a suitable flow field environment for the countercurrent mineralization of coarse particles and bubbles, and on the other hand, it is conducive to the smooth upward floating and separation of mineralized bubbles.

[0117] The mineralizing cylinder 30 is equipped with three horizontal annular plates 33. The edges of the annular plates 33 are tightly connected to the inner wall of the mineralizing cylinder 30, and the central hole 331 of the annular plates 33 is used for slurry flow.

[0118] The first annular plate 33a is located between the inlet B1 of the vortex mineralization pipeline and the mineralization impeller 321, forming a collision flow mineralization chamber for middlings with the bottom of the mineralization cylinder 30; the second annular plate 33b is located below the outlet B2 of the vortex mineralization pipeline, forming a discharge chamber for middlings slurry with the top of the mineralization cylinder 30; a central annular plate 33c is also provided between the first annular plate 33a and the second annular plate 33b, forming a dispersed circulation mineralization chamber between the central annular plate 33c and the second annular plate 33b, and forming a vortex forced mineralization chamber between the central annular plate 33c and the first annular plate 33a.

[0119] Mineralization occurs sequentially along the slurry flow direction in the entire system, including countercurrent mineralization, swirling mineralization, and eddy current mineralization. The corresponding turbulent dissipation gradient is enhanced, and the turbulent eddy size gradient is reduced, thereby adapting to the mineralization flotation of mineral particles of different sizes. Through the gradient adaptation of turbulent energy, efficient flotation recovery of mineral particles of various particle sizes is achieved.

[0120] More specifically, in the collision flow mineralization chamber, the inlet B1 of the vortex mineralization pipeline is equipped with an inlet pipe so that the middlings slurry enters the mineralization cylinder 30 in the form of a collision flow. The collision flow enhances turbulent dissipation, induces small-scale vortices, and strengthens the collision and adhesion of fine mineral particles with bubbles. On the other hand, it avoids the middlings slurry from accumulating at the bottom of the vortex mineralizer, which would affect the working effect.

[0121] Because the top of the mineralization cylinder 30 is a closed, confined space, a high-pressure solution environment easily forms inside the vortex mineralizer during operation, enhancing energy concentration and turbulent motion. Simultaneously, in this high-pressure solution environment, air solubility is increased, which is conducive to the generation of micro- and nano-bubbles, strengthening air dispersion and interfacial nano-bubble bridging, providing suitable bubble carriers and interfacial mineralization conditions for the flotation of fine minerals.

[0122] Mineralizing impeller 321 is located in the vortex forced mineralization chamber. This semi-open radial impeller generates strong turbulence through its high-speed rotation, inducing small-scale turbulent micro-vortices. This further enhances bubble dispersion and generates microbubbles, and also helps to force fine mineral particles to overcome fluid streamline limitations, strengthening their mineralization with the bubbles. Dispersion circulation impeller 322 is located in the dispersion circulation mineralization chamber. This open axial downward pressure impeller generates axial downward pressure through its high-speed rotation, promoting a downward circulation of the slurry, increasing the residence time of mineral particles within the cylinder, and raising the frequency of their collisions with bubbles.

[0123] In this embodiment, the diameter of the central hole 331 of the first annular plate 33a is less than or equal to the inlet diameter of the mineralizing impeller 321, and the diameter of the central hole 331 of the central annular plate 33c and the second annular plate 33b is greater than the blade diameter of the mineralizing impeller 321 and the blade diameter of the dispersing circulation impeller 322.

[0124] Baffles 341 are provided on the top surface of the first annular plate 33a and the bottom surface of the second annular plate 33b. Several baffles 341 are arranged radially around the central hole 331 of the annular plate 33. One long side of the baffle 341 is attached to the inner wall of the mineralization cylinder 30. The width of the baffle 341 is shorter than the annular portion of the annular plate 33. Liners 342 are provided on the bottom and top surfaces of the central annular plate 33c. Several liner plates 342 are arranged radially around the central hole 331 of the central annular plate 33c. One long side of the liner plate 342 is attached to the inner wall of the mineralization cylinder 30. The width of the liner plate 342 is shorter than the annular portion of the central annular plate 33c.

[0125] The baffle 341 and the liner 342 can support the annular plate 33 and prevent the slurry from forming an inertial vortex that adheres to the inner wall of the mineralization cylinder 30, thereby improving the mineralization effect. In order to further avoid the formation of inertial vortex, the baffle 341 provided on the top surface of the first annular plate 33a extends upward beyond the top surface of the mineralization impeller 321, and the baffle 341 provided on the bottom surface of the second annular plate 33b extends downward beyond the bottom surface of the dispersing circulation impeller 322.

[0126] Three annular plates 33 are also set in the slurry preparation cylinder 10. The setting position and form can be the same as those in the mineralization cylinder 30, which will not be described again here.

[0127] In addition, in this invention, there are no specific requirements for the number and shape of the baffles 341 and the liner 342, as long as they meet the usage requirements.

[0128] Example 3

[0129] Based on Example 1 or Example 2, the inlet X1 of the slurry conditioning pipeline, the inlet B1 of the eddy mineralization pipeline, and the inlet C1 of the middlings treatment pipeline are also pressurized to improve the intensity of the collision flow and the vortex flow.

[0130] like Figure 1 As shown, the inlet X1 of the slurry conditioning pipeline includes a first slurry distribution trough 40a arranged around the top side wall of the slurry conditioning cylinder 10. The first slurry distribution trough 40a is connected to a vertically arranged first slurry distribution pipe 41a. The number of first slurry distribution pipes 41a matches the number of slurry conditioning inlet pipelines 11. Minerals and flotation reagents are transported to the inlet X1 of the slurry conditioning pipeline through the first slurry distribution pipes 41a to enhance collision.

[0131] To further improve the pulping effect, such as Figure 6As shown, in this invention, multiple sets of spiral blades 411 are also arranged at intervals on the inner wall of the first slurry distribution pipe 41a. The width of the spiral blades 411 is 1 / 4 to 1 / 2 of the diameter of the first slurry distribution pipe 41a, and the height of a single spiral blade 411 is 1 / 2 of the width of the spiral blade 411. When the slurry passes through the first slurry distribution pipe 41a, the disturbance generated by the spiral blades 411 can improve the mixing effect of minerals and reagents.

[0132] The inlet B1 of the eddy current mineralization pipeline includes a second slurry distribution trough 40b arranged around the mineralization cylinder 30. The second slurry distribution trough 40b is located above the mineralization cylinder 30 and is connected to a second slurry distribution pipe 41b. The number of second slurry distribution pipes 41b matches the number of mineralization inlet pipelines 31. The slurry is transported to the inlet B1 of the eddy current mineralization pipeline through the second slurry distribution pipes 41b to enhance the collision.

[0133] An inner-lined jet pipe 111 is installed at the connection between the slurry inlet pipe 11 and the slurry inlet cylinder 10, and at the connection between the mineralization inlet pipe 31 and the mineralization cylinder 10. The diameter of the inner-lined jet pipe 111 is 1 / 4 to 3 / 4 of the diameter of the slurry inlet pipe. It extends a set distance through the side wall of the slurry inlet cylinder 10 / mineralization cylinder 10 into the corresponding cylinder to enhance the collision.

[0134] The inlet C1 of the middlings processing pipeline is connected to the middlings circulation feed trough 50, which surrounds the separation chamber 20 and is located below the inlet A1 of the raw ore processing pipeline. The middlings circulation feed trough 50 is connected to middlings distribution pipes 51, the number of which is matched to the inlet C1 of the middlings processing pipeline. The middlings slurry is transported to the inlet C1 of the middlings processing pipeline through the distribution pipes 51, forming the starting point of the middlings processing pipeline. This, combined with the arrangement of the cyclone tube 231, enhances the collision effect.

[0135] Example 4

[0136] To further improve the mineralization effect, based on Example 3, a lining jet pipe 111 is also installed inside the second slurry distribution pipe 41b near one end of the second slurry distribution tank 40b. An air conduit 38 is installed on the side of the second slurry distribution pipe 41b near the lining jet pipe 111. The air conduit 38 injects air into the slurry in the second slurry distribution pipe 41b. The jet from the lining jet pipe 111 can disperse the air injected into the second slurry distribution pipe 41b into tiny bubbles, so that the slurry can undergo pre-mineralization in the second slurry distribution pipe 41b, which helps the mineralization of the raw ore / mid-ore slurry.

[0137] The air duct 38 also includes an air distribution pipe 381, which is connected to an external air pump to obtain air and distribute the air evenly to each air duct 38 connected to the slurry distribution pipe 381.

[0138] Furthermore, a one-way valve is installed on the air duct 38 along the direction of air movement to prevent slurry from entering the air duct 38 and the air distribution pipe 381.

[0139] Example 5

[0140] This invention provides a flotation method for a forced pulp conditioning-eddy current mineralization-static separation mineral flotation system, comprising the following steps:

[0141] S1. The minerals and flotation reagents are fed into the slurry preparation cylinder 10 through the inlet X1 of the slurry preparation pipeline. After the set liquid level is reached, the stirring device 32 is turned on. The minerals and flotation reagents form a mixed slurry under the stirring action. The mixed slurry is discharged from the outlet X2 of the slurry preparation pipeline.

[0142] S2. Close the tailings discharge pipe 22. The mixed slurry enters the separation chamber 20 through the inlet A1 of the raw ore processing pipeline, and is then discharged from the outlet A2 of the raw ore processing pipeline and fed into the mineralization cylinder 30. After the mineralization cylinder 30 is filled with mixed slurry, the mixed slurry continues to be discharged from the outlet B2 of the vortex mineralization pipeline and fed into the inlet C1 of the middlings processing pipeline to re-enter the separation chamber 20.

[0143] S3. After the raw ore slurry in the separation chamber 20 reaches the set liquid level, turn on the pump 80, air duct 38, stirring device 32 and tailings discharge pipe 22 to allow air to enter the slurry in the mineralization cylinder 30 and form micro bubbles that collide with mineral particles to mineralize. The middlings slurry is then air-introduced to form an air-containing middlings slurry.

[0144] S4. The gas-bearing middlings slurry enters the separation chamber 20 through the inlet C1 of the middlings treatment pipeline. The bubbles are released and collide with the mineral particles in the separation chamber 20 to mineralize. The low-density mineralized bubbles move toward the center of the separation chamber 20 and float upwards, while the high-density unmineralized particles move toward the inner wall of the separation chamber 20 and descend. The floating mineralized bubbles collide with the raw ore slurry entering the separation chamber 20 in a countercurrent manner to mineralize.

[0145] S5. The minerals that have not been mineralized by the bubbles descend. The low-density unmineralized minerals in the middle area of ​​the separation chamber 20 are discharged through the outlet A2 of the raw ore processing pipeline. The high-density unmineralized minerals in the surrounding area of ​​the separation chamber 20 form tailings and are discharged through the tailings discharge pipe 22. Repeat S2-S4. The mineralized bubbles continuously form a stable foam layer at the top of the separation chamber 20. The foam layer overflows and is collected.

[0146] S6. After the flotation process is completed, stop the feed into the inlet X1 of the slurry conditioning pipeline, close the tailings discharge pipe 22, turn off the drive motor 37, and open the discharge pipe 36 to discharge the residual slurry in the slurry conditioning cylinder 10, separation chamber 20, and mineralization cylinder 30. After the liquid level in the mineralization cylinder 30 is lower than the inlet of the air duct 38, close the air duct 38. After the residual slurry in the separation chamber 20 is discharged, turn off the slurry pump 80 connected to the static separator and eddy current mineralizer. After all the material is discharged, close the discharge pipe 36. When the inlet of the slurry conditioning pipeline is equipped with a first slurry distribution tank 40a, the inlet of the eddy current mineralization pipeline is equipped with a second slurry distribution tank 40b, and the inlet C1 of the middlings treatment pipeline is connected to the middlings circulation feed tank 50, the operation process remains unchanged. Only the slurry circulation process is expanded to include the distribution process by the first slurry distribution tank 40a, the second slurry distribution tank 40b, and the middlings circulation feed tank 50. This will not be elaborated here.

[0147] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A forced slurry conditioning-eddy current mineralization-static separation mineral flotation system, characterized in that, The device includes a forced slurry conditioner, a static separator, and an eddy current mineralizer connected in sequence. The forced slurry conditioner includes a slurry conditioning cylinder (10) with a slurry conditioning pipeline running from bottom to top inside the cylinder. The static separator has a separation chamber (20) with a raw ore processing pipeline running from top to bottom and a middlings processing pipeline running from bottom to top inside the separation chamber (20). The eddy current mineralizer includes a mineralization cylinder (30) with an eddy current mineralization pipeline running from bottom to top inside the cylinder (30). The outlet (X2) of the slurry conditioning pipeline is connected to the inlet (A1) of the raw ore processing pipeline, the outlet (A2) of the raw ore processing pipeline is connected to the inlet (B1) of the eddy mineralization pipeline, and the outlet (B2) of the eddy mineralization pipeline is connected to the inlet (C1) of the middlings processing pipeline. Minerals and flotation reagents enter the slurry conditioning cylinder (10) from the inlet (X1) of the slurry conditioning pipeline. After slurry conditioning, the raw ore slurry is obtained and then enters the separation chamber (20) through the inlet (A1) of the raw ore processing pipeline. It moves downward along the raw ore processing pipeline to obtain middlings ore slurry and enters the eddy mineralization pipeline of the mineralization cylinder (30) for enhanced mineralization treatment. After enhanced mineralization treatment, the middlings ore slurry returns to the separation chamber (20) and enters the middlings processing pipeline for flotation separation. Finally, the concentrate is collected at the top of the separation chamber (20), and the flotation tailings are discharged by the tailings discharge pipe (22) set at the bottom of the separation chamber (20). In the forced slurry conditioner, the inlet (X1) of the slurry conditioning pipeline is located on the bottom side wall of the slurry conditioning cylinder (10), and the outlet (X2) of the slurry conditioning pipeline is located on the top side wall of the slurry conditioning cylinder (10). The inlet (X1) of the slurry conditioning pipeline includes at least two oppositely arranged slurry conditioning inlet pipes (11), so that minerals and flotation reagents enter the slurry conditioning cylinder (10) in the form of collision flow. The inlet (X1) of the slurry preparation pipeline includes a first slurry distribution trough (40a) arranged around the top side wall of the slurry preparation cylinder (10). The first slurry distribution trough (40a) is connected to a vertically arranged first slurry distribution pipe (41a). The number of first slurry distribution pipes (41a) matches the number of slurry preparation inlet pipelines (11). Minerals and flotation reagents are transported to the inlet (X1) of the slurry preparation pipeline through the first slurry distribution pipes (41a) to enhance collision. A small-diameter inner-lined jet pipe (111) is provided at the connection between the slurry inlet pipe (11) and the slurry cylinder (10). The inner-lined jet pipe (111) extends a set distance into the slurry cylinder (10) through the side wall to enhance the collision. Specifically, the diameter of the inner-lined jet pipe (111) is 1 / 4 to 3 / 4 of the diameter of the slurry inlet pipe. Spiral blades (411) are also arranged at intervals on the inner wall of the first slurry distribution pipe (41a) to enhance the dispersion of the agent and improve the slurry conditioning effect. The width of the spiral blades (411) is 1 / 4 to 1 / 2 of the diameter of the first slurry distribution pipe (41a), and the height of a single spiral blade (411) is 1 / 2 of the width of the spiral blade (411).

2. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 1, characterized in that, In the eddy current mineralizer, the inlet (B1) of the eddy current mineralization pipeline is located on the bottom side wall of the mineralization cylinder (30), and the outlet (B2) of the eddy current mineralization pipeline is located on the top side wall of the mineralization cylinder (30). The inlet (B1) of the eddy current mineralization pipeline includes at least two mineralization inlet pipes (31) arranged opposite to each other, so that the middlings slurry enters the mineralization cylinder (30) in the form of a collision flow.

3. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 2, characterized in that, The inlet (B1) of the eddy current mineralization pipeline includes a second slurry distribution trough (40b) arranged around the top side wall of the mineralization cylinder (30). The second slurry distribution trough (40b) is connected to a vertically arranged second slurry distribution pipe (41b). The number of second slurry distribution pipes (41b) matches the number of mineralization inlet pipelines (31). The slurry is transported to the inlet (B1) of the eddy current mineralization pipeline through the second slurry distribution pipes (41b) to enhance the collision.

4. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 3, characterized in that, A small-diameter inner-lined jet pipe (111) is provided at the connection between the mineralization inlet pipe (31) and the mineralization cylinder (30). The inner-lined jet pipe (111) extends a certain distance into the mineralization cylinder (30) through the side wall of the mineralization cylinder (30) to enhance the collision. Specifically, the diameter of the inner-lined jet pipe (111) is 1 / 4 to 3 / 4 of the diameter of the mineralization inlet pipe (31).

5. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 1, characterized in that, The inlet (A1) of the raw ore processing pipeline is located on the top side wall of the separation chamber (20). The inlet (A1) of the raw ore processing pipeline is connected to the feed pipe (21). The discharge end of the feed pipe (21) extends into the separation chamber (20) and bends towards the bottom of the separation chamber (20). The discharge end of the feed pipe (21) is closed, and a through hole (211) is opened on the pipe wall for the slurry to flow out.

6. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 5, characterized in that, The inlet (C1) of the middlings processing pipeline is located on the bottom side wall of the separation chamber (20). A vortex cone (23) is installed inside the separation chamber (20). The vortex cone (23) has a slope that is opposite to the inlet (C1) of the middlings processing pipeline. The middlings slurry enters the separation chamber (20) through the inlet (C1) of the middlings processing pipeline and impacts the slope of the vortex cone (23) to form a vortex.

7. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 6, characterized in that, The inlet (C1) of the medium ore processing pipeline is provided with a cyclone tube (231), which extends a set distance into the separation chamber (20), and the cyclone tube (231) is set at a certain angle toward the cyclone cone (23) to enhance the cyclone.

8. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 6, characterized in that, The inlet (C1) of the middlings processing pipeline includes a middlings circulation feed trough (50) arranged around the top side wall of the separation chamber (20). The middlings circulation feed trough (50) is arranged below the inlet (A1) of the raw ore processing pipeline. The middlings circulation feed trough (50) is connected to a vertically arranged middlings distribution pipe (51). The middlings slurry is transported to the inlet (C1) of the middlings processing pipeline through the middlings distribution pipe (51), forming the starting point of the middlings processing pipeline.

9. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 8, characterized in that, The outlet of the ore distribution pipe (51) is provided with a vortex tube (231), which extends a set distance into the separation chamber (20) and is set at a certain angle toward the vortex cone (23).

10. A forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in any one of claims 7-9, characterized in that, The inlet (C1) of the middlings processing pipeline includes at least two inlets respectively connected to cyclone pipes (231), and at least two cyclone pipes (231) are set toward the cyclone cone (23) at the same deflection angle to enhance the cyclone.

11. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 8, characterized in that, The separation chamber (20) is provided with a horizontally arranged sieve plate (24), the size of which is adapted to the inner diameter of the separation chamber (20), and through holes (241) for slurry flow are evenly opened on the sieve plate (24).

12. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 11, characterized in that, At least three screen plates (24) divide the separation chamber (20) into interconnected partitions, wherein the first screen plate (24a) is located above the inlet (A1) of the raw ore processing pipeline, the second screen plate (24b) is located below the inlet (A1) of the raw ore processing pipeline, and the third screen plate (24c) is located above the inlet (C1) of the middlings processing pipeline; the main static separation area of ​​the separation chamber (20) is formed between the second screen plate (24b) and the third screen plate (24c).

13. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 7, characterized in that, The vortex cone (23) is a cone-shaped cylinder that runs vertically through the top and bottom. The size of the bottom of the vortex cone (23) is adapted to the inner diameter of the separation chamber (20). The tailings discharge pipe (22) and the outlet (A2) of the raw ore processing pipeline are both located below the bottom of the vortex cone (23). After flotation, the tailings enter the tailings discharge pipe (22) through the cone-shaped cylinder, and the middlings enter the outlet (A2) of the raw ore processing pipeline through the cone-shaped cylinder.

14. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 1, characterized in that, The bottom of the separation chamber (20) is sloped towards the tailings discharge pipe (22).

15. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 9, characterized in that, The outlet (A2) of the raw ore processing pipeline is located on the bottom side wall of the separation chamber (20). The bottom of the separation chamber (20) is provided with a middlings inverted cone (25). The middlings inverted cone (25) is a cone with its opening facing the bottom of the conical cylinder. The outlet (A2) of the raw ore processing pipeline is connected to the side wall of the middlings inverted cone (25). The middlings slurry obtained from the raw ore processing pipeline enters the middlings inverted cone (25) from the conical cylinder and is then output from the outlet (A2) of the raw ore processing pipeline to the inlet (B1) of the eddy mineralization pipeline.

16. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 15, characterized in that, The opening of the inverted cone (25) of the ore is provided with a cover (251), and the cover (251) is connected to the upper edge of the inverted cone (25) of the ore with a gap, so that the ore slurry can enter the interior of the inverted cone (25).

17. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 2, characterized in that, Both the slurry conditioning cylinder (10) and the mineralization cylinder (30) are equipped with a stirring device (32). The stirring device (32) includes a mineralization impeller (321) for stirring. The mineralization impeller (321) is respectively located above the collision flow path between the slurry conditioning inlet pipes (11) and above the collision flow path between the mineralization inlet pipes (31).

18. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 17, characterized in that, Both the slurry conditioning cylinder (10) and the mineralization cylinder (30) are equipped with annular plates (33). The edges of the annular plates (33) are tightly connected to the inner wall of the cylinder, and the central hole (331) of the annular plates (33) is used for slurry flow.

19. A forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 18, characterized in that, In the mineralization cylinder (30), three annular plates (33) are provided. The first annular plate (33a) is located between the inlet (B1) of the vortex mineralization pipeline and the mineralization impeller (321), forming a collision flow mineralization chamber for middlings with the bottom of the mineralization cylinder (30). The second annular plate (33b) is located below the outlet (B2) of the vortex mineralization pipeline, forming a discharge chamber for middlings slurry with the top of the mineralization cylinder (30). The central annular plate (33c) is located between the first annular plate (33a) and the second annular plate (33b). A dispersed circulation mineralization chamber is formed between the central annular plate (33c) and the second annular plate (33b), and a vortex forced mineralization chamber is formed between the central annular plate (33c) and the first annular plate (33a). The slurry preparation cylinder (10) has three annular plates (33), which are positioned in the same way as the mineralization cylinder (30).

20. A forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 19, characterized in that, The stirring device (32) also includes a dispersion circulation impeller (322), which is respectively installed in the dispersion circulation mineralization chamber of the slurry preparation cylinder (10) and the mineralization cylinder (30).

21. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 19, characterized in that, The diameter of the central hole (331) of the first annular plate (33a) is less than or equal to the inlet diameter of the mineralizing impeller (321), and the diameter of the central hole (331) of the central annular plate (33c) and the second annular plate (33b) is greater than the blade diameter of the mineralizing impeller (321) and the blade diameter of the dispersing circulation impeller (322).

22. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 20, characterized in that, Inside the slurry preparation cylinder (10) and the mineralization cylinder (30), baffles (341) are provided on the top surface of the first annular plate (33a) and the bottom surface of the second annular plate (33b). Several baffles (341) are arranged radially around the central hole (331) of the annular plate (33). The long side of one side of the baffle (341) is attached to the inner wall of the cylinder. The width of the baffle (341) is shorter than the ring width of the annular plate (33). Liners (342) are provided on the bottom and top surfaces of the central annular plate (33c). Several linings (342) are arranged radially around the central hole (331) of the annular plate (33). The long side of one side of the lining (342) is attached to the inner wall of the cylinder. The width of the lining (342) is shorter than the ring width of the annular plate (33).

23. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 22, characterized in that, The baffle (341) provided on the top surface of the first annular plate (33a) extends upward beyond the top surface of the mineralizing impeller (321), and the baffle (341) provided on the bottom surface of the second annular plate (33b) extends downward beyond the bottom surface of the dispersing circulation impeller (322).

24. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 3, characterized in that, The second slurry distribution pipe (41b) is located near one end of the second slurry distribution tank (40b). A lined jet pipe (111) is also provided inside the second slurry distribution pipe (41b). The second slurry distribution tank (40b) feeds slurry into the slurry distribution pipe (41b) through the lined jet pipe (111).

25. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 24, characterized in that, An air conduit (38) is also provided on the second slurry distribution pipe (41b). The air conduit (38) is used to inject air into the slurry in the second slurry distribution pipe (41b). Under the action of the inner lining jet pipe (111), the air forms tiny bubbles that collide with the mineral particles, causing the minerals to mineralize.

26. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 25, characterized in that, The top of both the slurry conditioning cylinder (10) and the mineralization cylinder (30) are sealed by a sealing cover plate (35), and the bottom of both the slurry conditioning cylinder (10) and the mineralization cylinder (30) are provided with a ore discharge pipe (36) for discharging residual slurry.

27. A forced pulp conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 26, characterized in that, Both the forced slurry conditioner and the eddy current mineralizer are connected to a power unit, which is electrically connected to the stirring device (32) in the forced slurry conditioner and the eddy current mineralizer.

28. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 27, characterized in that, The power unit is a drive motor (37), which is installed on the sealing cover plate (35) at the top of the slurry preparation cylinder (10) and / or the mineralization cylinder (30).

29. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 1, characterized in that, The top opening of the separation chamber (20) is set as an overflow port for foam concentrate, and the overflow concentrate is collected by the concentrate collection device (60). The concentrate collection device (60) includes a collection tank (61) with an inner diameter larger than the outer diameter of the overflow port. The bottom plate (62) of the collection tank (61) has a hole that matches the size of the overflow port, so that the concentrate collection device (60) is fitted and fixed on the outside of the overflow port. The bottom plate (62) also has a discharge port (621) for the concentrate to be discharged, and the bottom plate (62) is inclined toward the discharge port (621).

30. A forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 29, characterized in that, The concentrate collection device (60) also includes a flushing system (70), which includes a flushing water ring (71) and an inlet pipe (72) connected to the flushing water ring (71), and a water valve set on the flushing water ring (71). The flushing water ring (71) is arranged in a ring along the inner side wall of the column, and a flushing water outlet is opened on the flushing water ring (71). Several flushing water outlets are directly opposite the bottom plate (62), and the water is used to flush the flotation concentrate to promote discharge.

31. The forced slurry conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 1, characterized in that, Pumps (80) are installed between the outlet (X2) of the slurry conditioning pipeline and the inlet (A1) of the raw ore processing pipeline, and between the outlet (A2) of the raw ore processing pipeline and the inlet (B1) of the eddy mineralization pipeline.

32. The flotation method of a forced pulp conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 19, characterized in that, Includes the following steps: S1. The minerals and flotation reagents are fed into the slurry preparation cylinder (10) through the inlet (X1) of the slurry preparation pipeline. After the set liquid level is reached, the stirring device (32) is turned on. The minerals and flotation reagents form a mixed slurry under the stirring action. The mixed slurry is discharged from the outlet (X2) of the slurry preparation pipeline. S2. Close the tailings discharge pipe (22). The mixed slurry enters the separation chamber (20) through the inlet (A1) of the raw ore processing pipeline, and is then discharged from the outlet (A2) of the raw ore processing pipeline and fed into the mineralization cylinder (30). After the mineralization cylinder (30) is filled with mixed slurry, the mixed slurry continues to be discharged from the outlet (B2) of the vortex mineralization pipeline and fed into the inlet (C1) of the middlings processing pipeline and re-enters the separation chamber (20). S3. After the raw ore slurry in the separation chamber (20) reaches the set liquid level, the air duct (38), stirring device (32) and tailings discharge pipe (22) are turned on. Air enters the mineralization cylinder (30) and forms tiny bubbles that collide with mineral particles to mineralize. The slurry is then air-introduced to form an air-containing ore slurry. S4. The gas-bearing middlings slurry enters the separation chamber (20) through the inlet (C1) of the middlings treatment pipeline. The microbubbles are released and collide with the mineral particles in the separation chamber (20) to mineralize. The low-density mineralized bubbles move toward the center of the separation chamber (20) and float upwards, while the high-density unmineralized particles move toward the inner wall of the separation chamber (20) and descend. The floating mineralized bubbles collide with the raw ore slurry entering the separation chamber (20) in a countercurrent manner to mineralize. S5. The minerals that have not been mineralized by the microbubbles descend, and the low-density unmineralized minerals in the middle area of ​​the separation chamber (20) are discharged through the outlet (A2) of the raw ore processing pipeline. The high-density unmineralized minerals in the surrounding area of ​​the separation chamber (20) form tailings and are discharged through the tailings discharge pipe (22). S2-S4 are repeated, and the mineralized bubbles continuously form a stable foam layer at the top of the separation chamber (20). The foam layer overflows and is collected. S6. After the flotation process is completed, stop feeding into the inlet (X1) of the slurry conditioning pipeline, close the tailings discharge pipe (22), turn off the drive motor (37), open the ore discharge pipe (36) to discharge the residual slurry in the slurry conditioning cylinder (10), separation chamber (20) and mineralization cylinder (30), and close the air duct (38) after the liquid level in the mineralization cylinder (30) is lower than the inlet of the air duct (38). After the residual slurry in the separation chamber (20) is discharged, turn off the pump (80). After all the material is discharged, close the ore discharge pipe (36).

33. The flotation method of a forced pulp conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 32, characterized in that, The inlet (C1) of the middlings processing pipeline is located on the bottom side wall of the separation chamber (20). A vortex cone (23) is set inside the separation chamber (20). The vortex cone (23) has a slope that is opposite to the inlet (C1) of the middlings processing pipeline. The middlings slurry enters the separation chamber (20) through the inlet (C1) of the middlings processing pipeline and impacts the slope of the vortex cone (23) to form a vortex. The vortex strengthens the collision between the mineral particles and the bubbles and promotes the upward floating tendency of the low-density mineralized bubbles.

34. The flotation method of a forced pulp conditioning-eddy current mineralization-static separation mineral flotation system as described in claim 32, characterized in that, The foam layer is collected by a concentrate collection device (60) located at the overflow port at the top of the separation chamber (20); the concentrate collection device (60) includes a base plate (62) sleeved on the outside of the overflow port at the top of the separation chamber (20), the base plate (62) is inclined, and a discharge port (621) for discharging mineralized foam is opened at the lowest end of the base plate (62); a water outlet is arranged above the base plate (62), and water is discharged from the water outlet to rinse the mineralized foam to promote discharge.

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