A bauxite slurry settling pond uniform mixing tank

Abstract

This utility model relates to the field of bauxite washing technology, specifically to a bauxite slurry settling tank with a homogenizing tank, comprising a tank body and a flow guiding and regulating mechanism. The tank body is inclined to a horizontal plane, with an inlet at one end and an outlet at the other. The upper end of the tank body is open. The flow guiding and regulating mechanism has guide plates on both sides of the tank body, staggered along the length of the tank body. The end of the guide plate closest to the tank body is rotatably connected to the tank body. The inclined tank body combined with the upper opening effectively improves the aeration efficiency of the slurry, accelerates the bubble dissipation process, and significantly reduces the risk of foam layer formation on the liquid surface after the slurry enters the settling tank. The staggered distribution of the guide plates forces the slurry to form a sinusoidal flow path, reducing the slurry flow velocity. The impact of the slurry on the guide plates enhances the homogenizing effect, making the slurry distribution more uniform and creating favorable conditions for subsequent settling.

Description

Technical Field

[0001] This utility model relates to the field of bauxite washing technology, and more specifically, to a bauxite slurry settling tank for uniform mixing. Background Technology

[0002] Bauxite washing is a pretreatment process primarily used to remove adhering mud, fine clay, and some soluble impurities from the ore, thereby improving the ore grade (mainly the aluminum-silicon ratio) and subsequent smelting efficiency. The core processes of bauxite washing include crushing, screening, homogenization, ball milling, flotation, settling, and pressure filtration. Currently, the settling process utilizes large-scale vertical flow settling tanks to separate fine clay from the slurry and recover circulating water. Particularly for lower-grade bauxite, the settling process can remove most impurities from the slurry, reducing the dewatering load on the subsequent pressure filtration process.

[0003] Existing vertical flow settling tanks typically deliver slurry directly to the center of the tank via a central inlet pipe. The slurry settles in the sedimentation zone, the clarified liquid is collected by overflow weirs and collection troughs around the top of the tank, and sludge is recovered through sludge hoppers at the bottom. However, this method of directly delivering slurry via a central inlet pipe has shortcomings. The slurry flow significantly disturbs the upper clarification zone of the settling tank, affecting the quality of the clarified liquid. Simultaneously, the high-speed injection of the slurry easily traps air, forming a foam layer on the surface, further reducing the quality of the clarified liquid. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a mixing tank for bauxite slurry settling, which can effectively control the slurry flow rate, reduce foam generation, and improve settling quality.

[0005] A bauxite slurry settling tank according to an embodiment of the present invention includes:

[0006] The tank body is inclined to a horizontal plane, with a feed inlet at one end and a discharge outlet at the other end; the upper end of the tank body is open.

[0007] A flow guiding and adjusting mechanism is provided with flow guiding plates on both sides of the tank body. The flow guiding plates on both sides are staggered along the length direction of the tank body. The end of the flow guiding plate near the tank body is rotatably connected to the tank body.

[0008] According to some embodiments of the present invention, the flow guiding and adjusting mechanism includes a flow guiding component and an adjusting component. The flow guiding component is provided with a mounting base, a connecting rod, and at least two flow guiding plates. One end of each flow guiding plate is provided with a rotating shaft, which is rotatably connected to the mounting base. The mounting base is fixedly connected to the tank. Both ends of the connecting rod are rotatably connected to the two flow guiding plates respectively. The adjusting component is provided with an adjusting rod, which is used to control the rotation of the flow guiding plates located on the same side of the tank.

[0009] According to some embodiments of this utility model, joint bearings are respectively provided at both ends of the connecting rod.

[0010] According to some embodiments of the present invention, the adjusting assembly includes the adjusting rod, the retaining ring, and the slider. The upper end of the slider is slidably connected to the guide plate, the lower end of the retaining ring is rotatably connected to the slider, the adjusting rod passes through the retaining ring and is provided with a stop block, and the stop block abuts against the retaining ring.

[0011] According to some embodiments of the present invention, the adjusting rod and the groove are threadedly connected, and a handwheel is provided at one end of the adjusting rod passing through the groove.

[0012] According to some embodiments of the present invention, a feed baffle is provided at the feed inlet of the tank, a feed pipe is provided on the feed baffle, and a connecting flange is provided on the feed pipe.

[0013] According to some embodiments of the present invention, a baffle plate is provided at the outlet of the trough, and the baffle plate can be moved and adjusted in the vertical direction to control the opening size of the outlet.

[0014] According to some embodiments of this utility model, the baffle plate is provided with adjustment slots on both sides, and the slot is provided with positioning holes. The baffle plate can be fixed at the discharge port by fastening bolts.

[0015] According to some embodiments of the present invention, a plurality of second bolts are provided at the lower part of the baffle plate along the width direction of the trough. The second bolts are threadedly connected to the baffle plate, and one end of the second bolt passes through the baffle plate and extends toward the length direction of the trough.

[0016] According to some embodiments of the present invention, a protective railing is provided on the upper part of the trough, and several metal pedals are provided on both sides of the trough.

[0017] A bauxite slurry settling tank according to an embodiment of the present invention has at least the following beneficial effects:

[0018] According to the present invention, the inclined tank combined with the upper opening structure effectively improves the aeration efficiency of the slurry, accelerates the bubble dissipation process, and helps reduce the risk of foam layer forming on the liquid surface after the slurry enters the settling tank, thereby improving the quality of the clarified liquid.

[0019] According to the present invention, staggered guide plates alter the flow path of the slurry, creating a sinusoidal flow path. The slurry, upon impacting the guide plates, achieves a homogenization effect, resulting in more uniform slurry concentration and particle distribution. The adjustable angle of the guide plates allows for control of the slurry's flow velocity and state within the tank by rotating them to change the effective cross-sectional area. This design is suitable for slurries of different flow rates, concentrations, or qualities, optimizing the homogenization effect and ensuring the slurry enters the settling tank with minimal disturbance. This significantly improves the processing efficiency, stability, and clarified liquid quality of subsequent settling processes.

[0020] According to the present invention, the design of the discharge port abutting the liquid surface allows the slurry to enter the central area of ​​the settling tank smoothly and slowly, further avoiding disturbance to the water in the upper clarification zone of the settling tank. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a top view schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a partial structural schematic diagram of the present invention;

[0024] Figure 4 This is an exploded structural diagram of the flow guiding and regulating mechanism of this utility model;

[0025] Figure 5 This is a partial structural diagram of the discharge port of this utility model;

[0026] Figure 6 This is a partial structural diagram of the feed inlet of this utility model.

[0027] In the picture:

[0028] 100-Tank body, 101-Inlet, 102-Outlet, 110-Inlet baffle, 111-Inlet pipe, 112-Connecting flange, 120-Baffle plate, 121-Adjusting slot, 122-Fastening bolt, 123-Second bolt, 130-Guard railing, 140-Metal pedal;

[0029] 200-Flow guiding and adjusting mechanism, 210-Flow guiding assembly, 211-Flow guiding plate, 212-Mounting base, 213-Connecting rod, 214-Rotating shaft, 215-Spherical bearing, 220-Adjusting assembly, 221-Adjusting rod, 222-Steel ring, 223-Slider, 224-Stop block, 225-Handwheel. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figure 1As shown in the figure, this utility model discloses a bauxite slurry settling tank for homogenization. The bauxite slurry settling tank for homogenization includes a tank body 100 and a flow guiding and adjusting mechanism 200. The tank body 100 is inclined to a horizontal plane. One end of the tank body 100 is provided with an inlet 101, and the other end of the tank body 100 is provided with an outlet 102. The upper end of the tank body 100 is open. The flow guiding and adjusting mechanism 200 is provided with guide plates 211 on both sides inside the tank body 100. The guide plates 211 on both sides are staggered along the length direction of the tank body 100. The end of the guide plate 211 near the tank body 100 is rotatably connected to the tank body 100. Specifically, in this embodiment, the slurry enters the inclined tank body 100 through the inlet 101 and flows naturally to the outlet 102 of the tank body 100 under the action of gravity. The opening at the top of the tank 100 increases the aeration rate during slurry flow, accelerating the dissipation of entrained air bubbles. The flow guiding and regulating mechanism 200 has guide plates 211 on both sides of the tank 100, staggered along the length of the tank 100. As the slurry flows through the tank 100, the staggered guide plates 211 force the slurry flow to continuously and alternately deflect to both sides of the tank 100, forming a sinusoidal flow path. This specific path significantly increases the slurry flow length and flow resistance, effectively reducing the linear velocity of the slurry while enhancing the turbulence within the slurry, promoting homogeneous mixing of solid particles and the liquid phase. The end of the guide plate 211 closest to the tank 100 is rotatably connected to the tank 100, allowing the operator to adjust its angle by rotating it. Changing the angle of the guide plate 211 directly adjusts the effective flow cross-sectional area of ​​the slurry flowing through the guide plate 211 region. By increasing or decreasing the effective cross-sectional area, the flow guiding and regulating mechanism 200 can precisely control the local and overall flow velocity of the slurry within the tank 100 and optimize the flow state of the slurry. The position design of the discharge port 102 allows the slurry to be smoothly and slowly discharged to the central area of ​​the settling tank by contacting the liquid surface of the settling tank.

[0035] In this embodiment, the inclined structure of the tank 100 combined with the upper opening effectively improves the aeration efficiency of the slurry, accelerates the bubble dispersion process, and significantly reduces the risk of foam layer formation on the liquid surface after the slurry enters the settling tank, thereby improving the quality of the clarified liquid. The staggered distribution of the guide plates 211 forces the slurry to form a sinusoidal flow path, which not only significantly reduces the slurry flow velocity, but also enhances the homogenization effect through the impact of the slurry on the guide plates 211, making the slurry concentration and particle distribution more uniform, creating favorable conditions for subsequent settling. The design of the discharge port 102 to abut the liquid surface minimizes the kinetic energy of the slurry when it is injected into the central area of ​​the settling tank, ensuring that the slurry enters in a smooth and slow manner, avoiding disturbance to the water in the upper clarification zone of the settling tank, and ensuring the stability of the clarification zone. The adjustable angle of the guide plate 211 gives the mixing tank high adaptability; by rotating the guide plate 211 to change the effective cross-sectional area, the mechanism can precisely control the flow rate and flow state of slurries of different flow rates, concentrations or qualities in the tank 100, continuously optimize the mixing effect and ensure that the slurry enters the settling tank in a low-disturbance manner, ultimately significantly improving the processing efficiency, operational stability and clarification quality of subsequent settling processes.

[0036] In some embodiments of this utility model, the flow guiding and adjusting mechanism 200 includes a flow guiding component 220 and an adjusting component 220. The flow guiding component 220 is provided with a mounting base 212, a connecting rod 213, and at least two flow guiding plates 211. One end of each flow guiding plate 211 is provided with a rotating shaft 214, which is rotatably connected to the mounting base 212. The mounting base 212 is fixedly connected to the tank 100. Both ends of the connecting rod 213 are rotatably connected to the two flow guiding plates 211 respectively. The adjusting component 220 is provided with an adjusting rod 221, which is used to control the rotation of the flow guiding plates 211 located on the same side of the tank 100. Specifically, in this embodiment, the flow guiding component 220 is fixed to both sides of the tank 100 by the mounting base 212. The rotating shaft 214 at one end of the flow guiding plate 211 and the mounting base 212 form a rotating pair, allowing the flow guiding plate 211 to rotate around the axis. The connecting rod 213 is hinged at both ends to two guide plates 211 on the same side, forming a parallel four-bar structure. This means that each set of guide components 220 has two guide plates 211, effectively increasing the width of the guide plates 211. The parallel four-bar structure ensures that the two guide plates 211 in the same set of guide components 220 always remain parallel and rotate synchronously. The adjusting rod 221 of the adjusting component 220 acts on any one of the guide plates 211 on the same side. When the adjusting rod 221 is operated, the driving force is transmitted through the parallel four-bar structure, achieving synchronous adjustment of the angles of all guide plates 211 on the same side. When the slurry flows through the tank 100, the staggered distribution of the guide components 220 forces the slurry to form a sinusoidal flow path, increasing the flow length and turbulence effect. Rotating the guide components 220 directly changes the effective cross-sectional area of ​​the slurry channel: increasing the inclination angle reduces the flow cross-section to increase flow velocity and mixing intensity, while decreasing the inclination angle expands the cross-section to reduce flow velocity and impact energy. The design of the discharge port 102 to contact the liquid surface of the settling tank further ensures that the slurry is injected smoothly into the central area.

[0037] In some embodiments of this utility model, spherical bearings 215 are respectively provided at both ends of the connecting rod 213. Specifically, in this embodiment, by providing spherical bearings 215, the risk of the guide plate 211 getting stuck can be reduced.

[0038] In some embodiments of this utility model, the adjusting assembly 220 includes an adjusting rod 221, a retaining ring 222, and a slider 223. The slider 223 is slidably connected to the upper end of the guide plate 211, and the lower end of the retaining ring 222 is rotatably connected to the slider 223. The adjusting rod 221 passes through the retaining ring 222 and is provided with a stop block 224, which abuts against the retaining ring 222. Specifically, in this embodiment, the adjusting rod 221 passes through the retaining ring 222, and the stop block 224, which is axially positioned on the adjusting rod 221, abuts against one end face of the retaining ring 222. The lower end of the retaining ring 222 is rotatably connected to the slider 223, while the slider 223 is connected to the upper end of the guide plate 211 via a sliding pair. When the operator moves the adjusting rod 221 axially, the stop block 224 pushes the retaining ring 222 to produce axial displacement, causing the slider 223 to slide along the upper end of the guide plate 211. Since the slider 223 and the guide plate 211 are slidably connected, the displacement of the slider 223 forces the guide plate 211 to rotate around its bottom pivot 214, thereby changing the tilt angle of the guide plate 211. This action is synchronously transmitted to all guide plates 211 on the same side through a parallel four-bar linkage structure, ensuring the consistency of angle adjustment.

[0039] In some embodiments of this utility model, the adjusting rod 221 is threadedly connected to the trough 100, and a handwheel 225 is provided at one end of the adjusting rod 221 passing through the trough 100. Specifically, in this embodiment, the structure of the adjusting rod 221 threadedly connected to the trough 100 allows for precise control of the rotation angle of the guide plate 211. By rotating the adjusting rod 221, the adjusting rod 221 can move along the axis. The handwheel 225 at one end of the adjusting rod 221 facilitates the operator's control of the rotation of the adjusting rod 221.

[0040] In some embodiments of this utility model, a feed baffle 110 is provided at the feed inlet 101 of the tank 100, a feed pipe 111 is provided on the feed baffle 110, and a connecting flange 112 is provided on the feed pipe 111. Specifically, in this embodiment, the slurry is transported to the feed inlet 101 through a grouting pipe, and the feed baffle 110 provided at the feed inlet 101 is sealed and connected to the grouting pipe through the connecting flange 112 on its feed pipe 111, thereby reducing the risk of slurry leakage.

[0041] In some embodiments of this utility model, a baffle plate 120 is provided at the discharge port 102 of the tank 100. The baffle plate 120 can be adjusted and moved vertically to control the opening size of the discharge port 102. Specifically, in this embodiment, by providing the baffle plate 120, the opening size of the discharge port 102 can be controlled. In actual use, the lower end face of the baffle plate 120 is immersed 2cm to 5cm into the slurry surface in the tank 100, thereby removing some floating impurities and foam.

[0042] In some embodiments of this utility model, the baffle plate 120 is provided with adjustment slots 121 on both sides, and the trough body 100 is provided with positioning holes. The baffle plate 120 can be fixed at the discharge port 102 by fastening bolts 122. Specifically, in this embodiment, the baffle plate 120 is vertically installed at the front end of the discharge port 102, and the vertical adjustment slots 121 on both sides are aligned with the positioning holes on the trough body 100. By loosening the fastening bolts 122, the operator can move the baffle plate 120 vertically. When adjusted to the target position, the fastening bolts 122 pass through the adjustment slots 121 and screw into the positioning holes, rigidly fixing the baffle plate 120 to the trough body 100, forming a closed mechanical lock.

[0043] In some embodiments of this utility model, a plurality of second bolts 123 are provided at the lower part of the baffle 120 along the width direction of the tank 100. The second bolts 123 are threadedly connected to the baffle 120, and one end of the second bolt 123 extends through the baffle 120 toward the length direction of the tank 100. Specifically, in this embodiment, by providing the second bolts 123, the ability to remove some suspended impurities and foam can be improved, especially for fibrous impurities. The second bolts 123 have a very good adhesion effect.

[0044] In some embodiments of this utility model, a protective railing 130 is provided on the upper part of the tank 100, and several metal pedals 140 are provided on both sides of the tank 100. Specifically, in this embodiment, the upper end of the tank 100 is open. By providing metal pedals 140 on both sides of the tank 100, it is convenient for operators to carry out daily inspection and maintenance. By providing a protective railing 130 on the upper part of the tank 100, safety can be improved.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A mixing tank for bauxite slurry settling, characterized in that, include: Tank (100); the tank (100) is inclined to the horizontal plane, one end of the tank (100) is provided with a feed inlet (101), and the other end of the tank (100) is provided with a discharge outlet (102); the upper end of the tank (100) is open; A flow guiding and adjusting mechanism (200) is provided with flow guiding plates (211) on both sides of the tank (100). The flow guiding plates (211) on both sides are staggered along the length direction of the tank (100). The end of the flow guiding plate (211) close to the tank (100) is rotatably connected to the tank (100).

2. The bauxite slurry settling tank for uniform mixing according to claim 1, characterized in that, The flow guiding and adjusting mechanism (200) includes a flow guiding component (220) and an adjusting component (220). The flow guiding component (220) is provided with a mounting base (212), a connecting rod (213) and at least two flow guiding plates (211). One end of the flow guiding plate (211) is provided with a rotating shaft (214). The rotating shaft (214) is rotatably connected to the mounting base (212). The mounting base (212) is fixedly connected to the tank (100). Both ends of the connecting rod (213) are rotatably connected to the two flow guiding plates (211) respectively. The adjusting component (220) is provided with an adjusting rod (221). The adjusting rod (221) is used to control the rotation of the flow guiding plate (211) located on the same side of the tank (100).

3. The bauxite slurry settling tank for uniform mixing according to claim 2, characterized in that, The connecting rod (213) is provided with spherical bearings (215) at both ends.

4. The bauxite slurry settling tank for uniform mixing according to claim 3, characterized in that, The adjustment assembly (220) includes the adjustment rod (221), the retaining ring (222), and the slider (223). The slider (223) is slidably connected to the upper end of the guide plate (211), and the lower end of the retaining ring (222) is rotatably connected to the slider (223). The adjustment rod (221) passes through the retaining ring (222) and is provided with a stop block (224). The stop block (224) abuts against the retaining ring (222).

5. The bauxite slurry settling tank for uniform mixing according to claim 4, characterized in that, The adjusting rod (221) and the groove (100) are threaded together, and a handwheel (225) is provided at one end of the adjusting rod (221) through the groove (100).

6. The bauxite slurry settling tank for uniform mixing according to claim 1, characterized in that, A feed baffle (110) is provided at the feed inlet (101) of the tank (100), a feed pipe (111) is provided on the feed baffle (110), and a connecting flange (112) is provided on the feed pipe (111).

7. The bauxite slurry settling tank for uniform mixing according to claim 1, characterized in that, A baffle plate (120) is provided at the discharge port (102) of the tank (100). The baffle plate (120) can be moved and adjusted in the vertical direction to control the opening size of the discharge port (102).

8. The bauxite slurry settling tank for uniform mixing according to claim 7, characterized in that, The baffle plate (120) is provided with adjustment slots (121) on both sides, and the slot (100) is provided with positioning holes. The baffle plate (120) can be fixed at the discharge port (102) by fastening bolts (122).

9. The bauxite slurry settling tank for uniform mixing according to claim 8, characterized in that, The lower part of the baffle plate (120) is provided with a plurality of second bolts (123) along the width direction of the trough (100). The second bolts (123) are threadedly connected to the baffle plate (120), and one end of the second bolt (123) passes through the baffle plate (120) and extends toward the length direction of the trough (100).

10. The bauxite slurry settling tank for uniform mixing according to claim 1, characterized in that, The upper part of the trough (100) is provided with a guardrail (130), and several metal pedals (140) are provided on both sides of the trough (100).

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