A stirring tank for celestite beneficiation and a beneficiation method

Abstract

The application discloses a kind of celestite ore dressing with agitator tank, including tank body, agitator is equipped in tank body, feed inlet and discharge outlet are equipped on tank body, moving track is equipped on the upper side of tank body, discharge suction tube capable of sliding along moving track is equipped on moving track.The advantage of the present application is that the reliable suction of light particles in celestite ore can be realized through the discharge suction tube, the impurities in the celestite ore sand after stirring can be effectively separated through the present application, and a higher purity celestite concentrate can be obtained.Even for particles with poor fluidity, the material can be quickly separated after stirring and layering, the material requirement is low, and the effects of small floor area, energy saving and environmental protection, high work efficiency, low material requirement, etc.

Description

Technical Field

[0001] This application relates to the field of celestite beneficiation technology, and in particular to a mixing tank and beneficiation method for celestite beneficiation. Background Technology

[0002] Utilizing the specific gravity properties of materials is a common technical principle in mineral processing, and it is used in commonly used equipment such as shaking tables and jigs. In experiments on celestite beneficiation, it was found that after obtaining a concentrate of a certain purity through methods such as shaking, further separation and purification are quite difficult. Furthermore, in production, further shaking of these concentrates would require multiple sets of shaking tables, resulting in a large footprint. While existing technologies often mention simple mixing tanks and agitators, such as CN207271143U and CN203540410U, their purpose is mostly for uniform mixing, rarely involving mineral separation.

[0003] Existing mineral processing machines, such as the continuous centrifugal concentrator disclosed in authorization announcement number CN207576673U, include an outer shell, a feed pipe, a centrifugal drum, a frame, a base, and a motor. The feed pipe extends from the top of the outer shell into the outer shell and is equipped with a sludge inlet and a water inlet. A concentrate trough is located below the centrifugal drum. The outer shell is mounted on the frame, which is positioned above the base, and the motor is fixed to the base. This method requires fine mineral particles and targets sludge; it cannot process the target minerals and celestite ore required by this method. Summary of the Invention

[0004] Based on the above-mentioned shortcomings in the prior art, the present invention provides a mixing tank and beneficiation method for celestite ore beneficiation, which can effectively separate impurities in celestite ore sand after mixing and obtain celestite concentrate with higher purity. It can also achieve rapid separation of materials after mixing and stratification even for particles with poor flowability, and has low requirements for materials.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution.

[0006] A mixing tank for celestite beneficiation includes a tank body, an agitator inside the tank body, a feed inlet and a discharge outlet on the tank body, a moving track on the upper side of the tank body, and a discharge suction pipe that can slide along the moving track.

[0007] Experiments have shown that when celestite concentrate is stirred in water, it still exhibits significant aggregation after being left to settle, with lighter particles forming a conical pile due to the agitation of the water flow. The light particles accumulate at the top of this pile. This application utilizes a discharge suction pipe to reliably extract these light particles. The target celestite ore is strontium sulfate, a white particle often mixed with black impurities. Therefore, the extraction effect can be judged by its color. The remaining material in the tank is the target concentrate. The extracted material can be further ground, gravity separated, or floated. The discharge suction pipe can automatically extract material using a siphon principle or actively by using a pump. This application effectively separates impurities from stirred celestite ore, obtaining a higher purity celestite concentrate. Even for particles with poor flowability, it achieves rapid separation of materials after stirring and stratification. It has low material requirements and features small footprint, energy saving, environmental protection, high efficiency, and low material requirements.

[0008] Preferably, the moving track is vortex-shaped, and a connecting slider is slidably provided on the side of the moving track, which is connected to the discharge suction pipe. The vortex shape of the moving track allows the discharge suction pipe to slide along the moving track in conjunction with the connecting slider, which is beneficial for achieving uniform suction of the material above the material by the discharge suction pipe.

[0009] Preferably, a support frame is provided on the upper side of the tank, and the support frame is adjustable in height. A rotating ring is rotatably installed inside the support frame, and the inner wall of the rotating ring is fixedly connected to the moving track. A drive assembly for driving the rotating ring is provided on the support frame. The adjustable height of the support frame allows the discharge suction pipe to absorb impurities from the stratified materials at different heights, ensuring reliable separation. The rotating ring allows the moving track to rotate as a whole, thus enabling the discharge suction pipe to also rotate, further improving the uniformity of impurity absorption by the discharge suction pipe.

[0010] Preferably, the connecting slider is equipped with a traveling component, and the moving track is equipped with a traveling rack. The traveling component includes a traveling gear that meshes with the traveling rack and a traveling motor that drives the traveling gear. The traveling motor drives the traveling gear to rotate, and under the action of the traveling rack, it drives the connecting slider to move along the moving track in the opposite direction, realizing reliable sliding of the discharge suction pipe and improving the reliability of discharge.

[0011] Preferably, the connecting slider has an "I"-shaped cross-section. The connecting slider is equipped with a first lubricating roller with its axis vertically aligned and a second lubricating roller with its axis horizontally aligned. Both the first and second lubricating rollers are embedded inside the connecting slider. The circumference of the first lubricating roller extends to the outer side of the vertical side of the connecting slider, and the circumference of the second lubricating roller extends to the outer side of the horizontal side of the connecting slider. The first and second lubricating rollers reduce the coefficient of friction between the connecting slider and the moving track, improving the reliability of the connecting slider's sliding motion. The "I"-shaped structure of the connecting slider ensures the stability of the connection with the moving track, achieving reliable support for the discharge suction pipe.

[0012] Preferably, the connecting slider has positioning grooves corresponding to the first lubrication rollers, and the bottom of the positioning grooves has a return spring that can push the first lubrication rollers outward. The return spring pushes the first lubrication rollers outward. When the connecting slider is in conjunction with the vortex-shaped moving track, the thickness of the portion of the connecting slider inside the moving track can be less than the internal width of the moving track. The first lubrication rollers provide support, preventing the connecting slider from bending or tipping. The reliable engagement of the traveling gear and rack is achieved through the engagement of the first lubrication rollers with the inside of the moving track. Because the return spring pushes out the first lubrication rollers, and the first lubrication rollers engage with the inside of the moving track, the moving slider, under the reaction force of the return spring, will push the moving slider outward from the moving track. This allows for control of the connection position of the traveling gear and rack. Even if the traveling rack and gear skip teeth or misalign teeth, the return spring can adapt, ensuring the overall reliability of the moving assembly's movement.

[0013] Preferably, the outer ring wall of the rotating ring is cylindrical, and the support frame has an annular track that matches the rotating ring. The rotating ring has a gear ring, and the support frame has a transmission gear that rotates to match the gear ring. The transmission gear is equipped with a rotary motor. By driving the transmission gear with the rotary motor, the rotating ring can be reliably rotated, thereby realizing the rotation of the discharge pipe. When the moving track is linear, the rotation of the rotating ring can realize the vortex movement of the discharge suction pipe; when the moving track is vortex-shaped, the rotation of the rotating ring can amplify or reduce the vortex trajectory, thus enabling the suction of sand-like lightweight particles to be completed while both the walking motor and the rotary motor maintain a constant speed.

[0014] Preferably, the lower end of the discharge suction pipe is provided with a suction port with a cone-shaped, downward-facing angle, which can increase suction power and easily improve accuracy.

[0015] A mineral processing method based on the above-mentioned stirred tank for celestite beneficiation, characterized by comprising the following steps:

[0016] A. Ore pretreatment, including hand sorting, washing, and crushing;

[0017] B. Screening and mud washing: particle size control is achieved through mud washing, and muddy materials are washed away.

[0018] C. First, add water to the mixing tank until it submerges the agitator. Turn on the agitator and add the material and water into the tank until it is 4 / 5 to 5 / 6 full. After filling, the volume ratio of material to water should be between 1:5 and 1:10.

[0019] D. Stir for 5-10 minutes, let stand for 3-5 minutes, control the movement of the discharge pipe to start sucking up the material, and adjust the suction force according to the particle size of the material.

[0020] E. After the water is absorbed, open the flushing port and discharge port to obtain the remaining material in the tank.

[0021] This method utilizes the specific gravity difference between different mineral sands to effectively separate impurities in celestite ore sand after stirring, obtaining higher purity celestite concentrate. Even for particles with poor flowability, it can achieve rapid separation of materials after stirring and stratification, with low requirements for material flowability.

[0022] Preferably, in step D, the discharge suction pipe has three motion modes: Mode 1, the walking component is intermittently activated, and the rotating ring rotates under the action of the driving component; Mode 2, both the walking component and the driving component are running, with the walking component's direction of travel being the same as the driving component's rotation direction; Mode 3, both the walking component and the driving component are running, with the walking component's direction of travel being opposite to the driving component's rotation direction. Mode 1 is suitable for processing celestite ore sand with a thick and unevenly distributed upper layer, mainly relying on the rotation of the rotating ring to achieve continuous cleaning on the same circle; Mode 2 is suitable for processing celestite ore sand with a thin upper layer, forming a vortex trajectory that gradually becomes less dense towards the outside, improving processing efficiency; Mode 3 is suitable for processing celestite ore sand with a thick and relatively evenly distributed upper layer, where the differential motion of rotation and movement effectively reduces the spacing of the vortex trajectory, thus achieving a reliable sand discharge effect.

[0023] The present invention has the following beneficial effects: it can effectively separate impurities in celestite ore sand after stirring, and obtain celestite concentrate with higher purity. It can also achieve rapid separation of materials after stirring and stratification, even for particles with poor flowability, and has low requirements for materials. Through the unique setting of the moving track, it can achieve a uniform and reliable material suction effect, especially to achieve reliable suction of the upper layer of light particles in the form of sand piles. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the principle of the first embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the principle of the second embodiment of the present invention.

[0026] Figure 3This is a schematic diagram of the cooperative structure of the walking component and the connecting slider used in this invention.

[0027] Figure 4 This is a schematic diagram of the structure of the first discharge component of the present invention.

[0028] Figure 5 yes Figure 4 A schematic diagram of the movable slider used.

[0029] Figure 6 This is a schematic diagram of the structure of the second type of discharge component of the present invention.

[0030] In the diagram: Tank 1, Agitator 101, Rotating Shaft 102, Inlet 103, Outlet 104, Flushing Inlet 105, Discharge Suction Pipe 106, Suction Inlet 107, Support Frame 2, Lifting Hydraulic Cylinder 201, Guide Rod 202, Rotating Ring 203, Gear Ring 204, Transmission Gear 205, Discharge Assembly 3, Moving Track 301, Connecting Slider 302, Rotating Motor 303, Traveling Rack 304, Traveling Gear 305, Traveling Motor 306, Worm Gear Reducer 307, First Lubricating Roller 308, Second Lubricating Roller 309, Positioning Slide 311, Return Spring 312, Guide Plate 4. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1,

[0033] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, a mixing tank for celestite beneficiation includes a tank body 1, inside which a stirrer 101 is installed, positioned at the center of the bottom of the tank body 1. The stirrer 101 can be disc-shaped, paddle-shaped, or spiral-shaped, employing existing stirrer 101 structures. The tank body 1 has an inlet 103 and an outlet 104. The inlet 103 is located at the top of the tank body 1, and the outlet 104 is located on the lower side wall of the tank body 1. The lower side wall of the tank body 1 has a flushing port 105 in the direction opposite to the outlet 104. Below the stirrer 101, a rotating shaft 102 is provided, connected to an external rotary power mechanism. The rotary power mechanism can be a motor coupled with a transmission mechanism to rotate the shaft 102. The shaft 102 is rotaryly sealed to the lower wall of the tank body 1. A moving track 301 is provided on the upper side of the tank body 1, and a discharge suction pipe 106 that can slide along the moving track 301 is provided. The lower end of the discharge suction pipe 106 is provided with a suction port 107 with a cone-shaped, downward-facing angle and a frustum-like surface. The discharge suction pipe 106 is a rigid structure. Although a flexible pipe could also be used, as it rotates and oscillates during suction to improve suction efficiency, it would disturb the material and worsen the separation effect. Therefore, this application preferably uses a rigid pipe. The moving track 301 is vortex-shaped, and a connecting slider 302 is slidably provided on the side of the moving track 301, which is connected to the discharge suction pipe 106.

[0034] A support frame 2 is provided on the upper side of the tank body 1, and the support frame 2 is raised and lowered. Two sets of lifting hydraulic cylinders 201 are symmetrically arranged around the axis of the support frame 2 on the lower side of the support frame 2. Two guide rods 202 are provided between the two sets of lifting hydraulic cylinders 201, penetrating and slidingly connecting the support frame 2. The two sets of lifting hydraulic cylinders 201 are driven synchronously to achieve stable raising and lowering of the support frame 2. The support frame 2 is circular in shape. A rotating ring 203 is rotatably provided inside the support frame 2. The inner ring wall of the rotating ring 203 is fixedly connected to the moving track 301. In this embodiment, the interior of the rotating ring 203 is fitted and fixed to the vortex-shaped moving track 301, and the connecting slider 302 is located inside the vortex-shaped moving track 301. A drive assembly for driving the rotating ring 203 is provided on the support frame 2. The outer ring wall of the rotating ring 203 is cylindrical, and an annular track that matches the outer ring of the rotating ring 203 is provided inside the support frame 2. The rotating ring 203 is rotatably connected to the annular track through ball bearing lubrication. A gear ring 204 is fixedly mounted on the rotating ring 203, and a transmission gear 205 that rotatably engages with the gear ring 204 is mounted on the support frame 2. Both the gear ring 204 and the transmission gear 205 adopt a bevel gear structure. The transmission gear 205 has four sets arranged in a circumferential array around the axis of the gear ring 204. Two sets of transmission gears 205 facing each other are equipped with a rotating motor 303, and the other two sets of transmission gears 205 are rotatably fixed on the support frame 2.

[0035] The connecting slider 302 is equipped with a traveling component, and the moving track 301 is equipped with a traveling rack 304. The traveling component includes a traveling gear 305 that cooperates with the traveling rack 304 and a traveling motor 306 that drives the traveling gear 305. The discharge suction pipe 106, the connecting slider 302, the traveling component, the moving track 301, the rotating ring 203, and the support frame 2 form the discharge component 3. The cross-sectional shape of the connecting slider 302 is "I"-shaped, and the cross-sectional shape of the moving track 301 is "C"-shaped. The moving track 301 reliably limits the movement of the connecting slider 302. The connecting slider 302 is equipped with a first lubricating roller 308 with its axis vertically arranged and a second lubricating roller 309 with its axis horizontally arranged. Both the first lubricating roller 308 and the second lubricating roller 309 are embedded inside the connecting slider 302. The circumference of the first lubricating roller 308 extends to the outside of the vertical side of the connecting slider 302, and the circumference of the second lubricating roller 309 extends to the outside of the horizontal side of the connecting slider 302. The connecting slider 302 has positioning grooves 311 corresponding to the first lubrication rollers 308. A return spring 312 is provided at the bottom of the positioning groove 311 to push the first lubrication rollers 308 outwards. A positioning post is provided on the positioning groove 311 to radially limit the return spring 312. The portion of the connecting slider 302 outside the moving track 301 is a semi-cylinder. A pair of angular contact bearings are provided along the axis of the semi-cylinder to provide rotational support for the discharge suction pipe 106. The discharge suction pipe 106 is rotatably connected to the connecting slider 302, so that the discharge suction pipe 106 will not rotate together with the connecting slider 302 during vortex or rotary motion, reducing the torque between the discharge suction pipe 106 and its upper connecting pipe, and improving the reliability of the discharge suction pipe 106. Travel racks 304 are provided on the upper and lower sides of the moving track 301. Two sets of travel motors 306 are fixedly installed at intervals on the upper and lower sides of the connecting slider 302. The travel motors 306 are connected to the travel gears 305 through worm gear reducers. The worm gear reducers 307 are also fixed on the connecting slider 302, and the travel gears 305 are set with their axes vertical. The travel rack 304 corresponds to the outer periphery of the vortex-shaped moving track 301, and the travel rack 304 is also vortex-shaped. The rotation of the travel motors 306 drives the travel rack 304 to rotate, thereby realizing the movement of the connecting slider 302 on the moving track 301.

[0036] Example 2,

[0037] A mixing tank for celestite beneficiation, such as Figure 2 As shown, the height of the flushing port 105 is higher than the height of the discharge port 104. The only difference between Embodiment 2 and Embodiment 1 is that the tank body 1 is provided with a guide plate 4 inclined from the flushing port 105 to the discharge port 104, and the guide plate 4 is located below the flushing port 105 and the discharge port 104. This allows for better discharge of remaining minerals, and the bottom minerals are discharged by flushing with water through the flushing port 105.

[0038] Example 3,

[0039] A mixing tank for celestite beneficiation, such as Figure 6 As shown, the only difference between Embodiment 3 and Embodiment 1 is that the moving track 301 is straight, and both ends of the moving track 301 are fixedly connected to the rotating ring 203. The traveling rack 304 is also straight. To match the moving track 301, the part of the connecting slider 302 that matches the moving track 301 is also set to be straight. The advantage is that it can reduce the difficulty of forming the spiral trajectory and facilitate production and manufacturing. However, it is not convenient to form a vortex trajectory that gradually thins out from the axis of the tank 1. It can only be achieved by adjusting the traveling speed of the traveling motor 306 online, which makes it difficult to adapt to different forms of celestite ore beneficiation and sand production.

[0040] Example 4,

[0041] A mineral processing method based on the above-mentioned stirred tank for celestite beneficiation includes the following steps:

[0042] A. Ore pretreatment, including hand sorting, washing, and crushing;

[0043] B. Screening and washing: Particle size control is achieved through washing, and muddy materials are removed. Since this scheme mainly utilizes the specific gravity difference between different ore sands, muddy materials are not suitable for this scheme and need to be washed away. Particle size control is crucial; the narrower the particle size distribution, the better the effect. It can be 20-50, 50-80, 80-100, 100-120, 120-150, 150-180 or 180-200. Below 200 mesh, muddy material is easily formed, and coarse particles may not be completely dissociated. It is preferred to be 80-180 mesh.

[0044] C. First, add water to the mixing tank until it submerges the agitator 101. Turn on the agitator 101 and add the material and water into the tank 1 until it is 4 / 5 to 5 / 6 full. After filling, the volume ratio of material to water is between 1:5 and 1:10. Adding water first is to protect the agitator 101 and prevent the material from caking. Adding more water is to ensure uniform mixing and to ensure sufficient water for the later material suction process.

[0045] D. Stir for 5-10 minutes, let stand for 3-5 minutes, control the discharge pipe to move 106 to start suction, the suction force is adjusted according to the particle size of the material; the power for suction can be provided by a pump or by siphon, the suction force is adjusted according to the particle size of the material, the clear water on the top layer after the material has settled can be recycled.

[0046] E. After the water is absorbed, open the flushing port 105 and the discharge port to obtain the remaining material in the tank.

[0047] In step D, when the moving track 301 is vortex-shaped, the discharge suction pipe 106 can adopt the following three motion forms: Form 1, the walking component is intermittently activated, and the rotating ring 203 rotates under the action of the driving component; Form 2, both the walking component and the driving component are running, and the traveling direction of the walking component is in the same direction as the rotation direction of the driving component; Form 3, both the walking component and the driving component are running, and the traveling direction of the walking component is opposite to the rotation direction of the driving component. When the device disclosed in this application is applied, the initial position of the discharge suction pipe 106 is always located at the axis of the mixing tank, and then it moves outward from the axis of the mixing tank. Form 1 is suitable for processing celestite ore sand with a thick and unevenly distributed upper layer. It mainly relies on the rotation of the rotating ring 203 to achieve continuous cleaning on the same circle, and moves outward by intermittently opening the walking component. Form 2 is suitable for processing celestite ore sand with a thin upper layer. It can form a vortex trajectory that is dense in the middle and gradually becomes sparser outward, thus improving processing efficiency. Form 3 is suitable for processing celestite ore sand with a thick and relatively evenly distributed upper layer. Through the differential of the rotation of the rotating ring 203 and the movement of the walking motor 306, the spacing of the vortex trajectory is reduced, thus achieving a reliable sand discharge effect.

[0048] The target material in celestite ore is strontium sulfate, which is white granules often mixed with black impurities. Therefore, the adsorption effect can be judged by its color. Furthermore, the celestite granules used by our team are heavier than the black impurities. The target concentrate is located at the bottom of the mixing tank, i.e., the residue inside the tank. The adsorbed material needs further grinding, gravity separation, or flotation. Before step C, a gravity separation can be performed first, and the resulting concentrate or tailings can be stirred and separated again.

Claims

1. A mixing tank for celestite beneficiation, comprising a tank body, a stirrer arranged in the tank body, a feeding inlet and a discharging outlet arranged on the tank body, characterized in that, The upper side of the tank is provided with a moving track, and a discharge suction pipe that can slide along the moving track is provided on the moving track; a connecting slider is slidably provided on the side of the moving track, and a support frame is provided on the upper side of the tank, which is raised and lowered; a rotating ring is rotatably provided inside the support frame, and the inner ring wall of the rotating ring is fixedly connected to the moving track; a drive component for driving the rotating ring is provided on the support frame; a traveling component is provided on the connecting slider; a traveling rack is provided inside the moving track; the traveling component includes a traveling gear that cooperates with the traveling rack and a traveling motor that drives the traveling gear.

2. A stirred tank for celestite beneficiation according to claim 1, characterized in that, The connecting slider is connected to the discharge suction pipe, and the moving track is vortex-shaped.

3. A stirred tank for celestite beneficiation according to claim 2, characterised in that, The cross-sectional shape of the connecting slider is "I". The connecting slider is provided with a first lubricating roller with its axis set vertically and a second lubricating roller with its axis set horizontally. Both the first lubricating roller and the second lubricating roller are embedded inside the connecting slider. The circumference of the first lubricating roller extends to the outside of the vertical side of the connecting slider, and the circumference of the second lubricating roller extends to the outside of the horizontal side of the connecting slider.

4. A stirred tank for celestite beneficiation according to claim 3, characterised in that, The connecting slider is provided with positioning grooves corresponding to the first lubrication rollers, and the bottom of the positioning grooves is provided with a return spring that can push the first lubrication rollers outward.

5. A stirred tank for celestite beneficiation according to claim 1, characterized in that, The outer ring wall of the rotating ring is cylindrical, and the support frame is provided with an annular track that matches the rotating ring. The rotating ring is provided with a gear ring, and the support frame is provided with a transmission gear that matches the gear ring. The transmission gear is equipped with a rotating motor.

6. A stirred tank for celestite beneficiation according to claim 1, characterized in that, The lower end of the discharge suction pipe is provided with a suction port with a cone angle pointing downwards, which is shaped like a frustum.

7. A beneficiation method using the agitator tank for celestite beneficiation according to any one of claims 1 to 6, characterized in that, Includes the following steps: A. Ore pretreatment, including hand sorting, washing, and crushing; B. Screening and mud washing: particle size control is achieved through mud washing, and muddy materials are washed away. C. First, add water to the mixing tank until it submerges the agitator. Turn on the agitator and add the material and water into the tank until it is 4 / 5 to 5 / 6 full. After filling, the volume ratio of material to water should be between 1:5 and 1:

10. D. Stir for 5-10 minutes, let stand for 3-5 minutes, control the movement of the discharge pipe to start sucking up the material, and adjust the suction force according to the particle size of the material. E. After the water is absorbed, open the flushing port and discharge port to obtain the remaining material in the tank.

8. A beneficiation method using a stirred tank based on celestite according to claim 7, characterized in that, In step D, the discharge suction pipe has three motion modes: mode 1, the walking component is intermittently activated, and the rotating ring rotates under the action of the driving component; mode 2, both the walking component and the driving component are running, and the traveling direction of the walking component is in the same direction as the rotation direction of the driving component; mode 3, both the walking component and the driving component are running, and the traveling direction of the walking component is opposite to the rotation direction of the driving component.

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