Titanium dioxide acidolysis tailings magnetic separation recovery device

Abstract

This utility model relates to a magnetic separation and recovery device for titanium dioxide acid hydrolysis tailings, belonging to the technical field of magnetic separation equipment. It includes a frame, mounting frame, angle adjustment mechanism, drive roller, conveyor belt, magnetic plate, iron slag receiving hopper, tailings receiving hopper, and baffle skirt. An inner feeding trough is located above the conveyor belt, with a support fixed to the upper outer side of the inner feeding trough, which is fixed to the mounting frame. An outer feeding trough is fitted below the inner feeding trough. Distributing holes are evenly distributed at the bottom of both the inner and outer feeding troughs. The outer feeding trough is connected to an adjustment mechanism for adjusting its height. This utility model can magnetically separate ilmenite particles from titanium dioxide acid hydrolysis tailings, reducing resource waste. The inner and outer feeding troughs, with evenly distributed distributing holes at their bottoms, combined with the height-adjustable adjustment mechanism, ensure uniform distribution of the tailings slurry, preventing material accumulation, effectively improving magnetic separation efficiency, and adapting to different tailings feeding requirements.

Description

Technical Field

[0001] This utility model relates to a magnetic separation and recovery device for titanium dioxide acid hydrolysis tailings, belonging to the technical field of magnetic separation equipment. Background Technology

[0002] Titanium dioxide is an important white pigment and inorganic additive, widely used in coatings, plastics, rubber, papermaking, chemical fibers, inks, cosmetics, food, pharmaceuticals, electronics, ceramics, glass, catalysts, and other industries. Its production mainly employs the sulfuric acid decomposition method, using titanium-containing minerals such as ilmenite or rutile as raw materials. However, the acidolysis process generates a large amount of acidic waste liquid and residue; approximately 0.5-0.8 tons of acidolysis tailings are produced per ton of titanium dioxide.

[0003] Acid hydrolysis tailings contain ilmenite particles, which are currently not effectively recovered, resulting in a significant waste of resources. Therefore, exploring new and efficient technologies for recovering waste acid tailings is of great significance for promoting the sustainable development of the titanium dioxide industry. Utility Model Content

[0004] This invention provides a magnetic separation and recovery device for titanium dioxide acid hydrolysis tailings, which solves the problems mentioned in the background technology.

[0005] This utility model relates to a magnetic separation and recovery device for titanium dioxide acid hydrolysis tailings, including a frame, a mounting frame hinged to one end of the frame, an angle adjustment mechanism at the other end of the mounting frame, drive rollers rotatably mounted at both ends of the mounting frame, and a conveyor belt connected to the two drive rollers. A magnetic plate is provided between the upper conveyor belt and the mounting frame. Iron slag receiving hoppers and tailings receiving hoppers are respectively provided on the frame below both ends of the conveyor belt to catch falling materials. A baffle skirt is fixed at the outer edge of the conveyor belt. An inner feed trough is provided above the conveyor belt. A bracket is fixed to the upper outer side of the inner feed trough and is fixed to the mounting frame. An outer feed trough is fitted at the lower part of the inner feed trough. Material distribution holes are evenly distributed at the bottom of the inner feed trough and the outer feed trough. An adjustment mechanism for adjusting the height of the outer feed trough is connected to it.

[0006] As a preferred embodiment, the adjustment mechanism includes multiple inverted U-shaped clamps fixed to the top of the feed trough. An adjusting screw is fixed to the top of each clamp, with its upper end passing through a support frame. Adjusting nuts are provided on both the upper and lower adjusting screws of the support frame. The inverted U-shaped clamps facilitate the connection between the feed trough and the adjusting screws. The adjusting screws, in conjunction with the adjusting nuts on the support frame, allow for adjustment of the feed trough's vertical position by turning the nuts. This simple and convenient operation, coupled with the high precision of the threaded adjustment method, enables accurate control of the feed trough's height, further improving material distribution uniformity, adapting to different feeding requirements, and ensuring stable subsequent magnetic separation results.

[0007] As a preferred embodiment, the feed trough near the iron slag receiving hopper is equipped with a height-adjustable flushing mechanism. Below the conveyor belt is an inclined U-shaped liquid receiving trough, with its higher end fixed to the top of the tail slag receiving hopper, and its lower end guiding the liquid into the iron slag receiving hopper. The flushing mechanism washes away the magnetically separated particles, removing adhering non-ferrous impurities, resulting in cleaner magnetic separation. The liquid receiving trough catches iron-containing impurities and dripping liquid that falls from the conveyor belt during its return journey.

[0008] As a preferred embodiment, the rinsing mechanism includes fixed plates at the front and rear ends of the mounting frame, with a rinsing trough between the two fixed plates. The bottom of the rinsing trough has evenly distributed rinsing water holes, and the upper center of the rinsing trough has a water inlet pipe with multiple axially distributed water holes at the bottom. Adjusting screws are fixed at the front and rear ends of the rinsing trough. The fixed plates have vertically oriented slots, and the outer end of the adjusting screws passes through these slots and is connected to a locking nut. The fixed plates provide a stable mounting foundation for the rinsing mechanism, ensuring the structure does not shake during rinsing. The evenly distributed rinsing water holes at the bottom of the rinsing trough allow for uniform spraying of rinsing water onto the conveyor belt, ensuring thorough rinsing. The adjusting screws, in conjunction with the vertical slots on the fixed plates and the locking nut, allow for flexible adjustment of the rinsing trough height, improving the adaptability and practicality of the rinsing mechanism.

[0009] As a preferred embodiment, a baffle plate 1 is fixed to the frame at the left end of the conveyor belt, and a baffle plate 2 is fixed to the frame at the right end of the conveyor belt. A flushing pipe is fixed to the upper part of the baffle plate 1, and multiple flushing nozzles are fixed to the lower right of the flushing pipe, pointing towards the separation point between the drive roller and the conveyor belt. Baffle plate 1 and baffle plate 2 respectively block and guide the material falling from both ends of the conveyor belt, ensuring that iron slag falls accurately into the iron slag receiving hopper and tail slag falls accurately into the tail slag receiving hopper, preventing material from scattering and causing waste and pollution. The flushing nozzles on the flushing pipe are specifically aimed at the separation point between the drive roller and the conveyor belt, effectively flushing away the iron components adhering to the conveyor belt.

[0010] As a preferred embodiment, the angle adjustment mechanism includes an adjustment plate fixed to the front and rear sides of the left end of the mounting frame. An adjustment screw three is hinged to the bottom of the adjustment plate, and a support frame is connected to the lower end of the adjustment screw three. The support frame is fixed to the machine frame, and locking nuts are provided on the adjustment screw three above and below the support frame. The adjustment screw three, in conjunction with the locking nuts above and below the support frame, enables precise angle adjustment.

[0011] As a preferred embodiment, a tensioning frame is hinged to the bottom left end of the mounting frame. Tensioning rollers are rotatably mounted on the front and rear tensioning frames. The lower left end of the conveyor belt passes over the tensioning rollers. An adjusting screw four is hinged to the tensioning frame, and a limit sleeve is fitted onto the adjusting screw four. The limit sleeve is fixedly mounted on the mounting frame, and both ends of the limit sleeve have threaded nuts that are installed on the adjusting screw four. The adjusting screw four, in conjunction with the limit sleeve and the fixed nuts, allows adjustment of the pressure of the tensioning rollers on the conveyor belt by turning the fixed nuts, thus achieving flexible adjustment of the conveyor belt tension to adapt to the tension requirements of conveyor belts under different loads.

[0012] This utility model has the following beneficial effects: It can magnetically separate ilmenite particles from the acid hydrolysis tailings of titanium dioxide, reducing resource waste. It is equipped with an inner feed tank and an outer feed tank, with evenly distributed material distribution holes at the bottom of both. At the same time, with an adjustable height adjustment mechanism, it can achieve uniform distribution of tailings slurry, avoid material accumulation, effectively improve the magnetic separation effect, and adapt to different tailings feeding needs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Partial structural diagram Figure 1 ; Figure 3 for Figure 1 Partial structural diagram Figure 2 ; Figure 4 for Figure 1 Partial structural diagram Figure 3 ; In the diagram: 1. Frame; 2. Iron slag receiving hopper; 3. Liquid receiving tank; 4. Baffle plate one; 5. Tensioning roller; 6. Tensioning frame; 7. Flushing pipe; 8. Drive roller; 9. Limiting sleeve; 10. Adjusting screw two; 11. Water inlet pipe; 12. Flushing tank; 13. Support; 14. Inner feed trough; 15. Adjusting screw one; 16. Clamping plate; 17. Outer feed trough; 18. Baffle skirt; 19. Adjusting screw three; 20. Magnetic plate; 21. Mounting frame; 22. Baffle plate two; 23. Tail slag receiving hopper; 24. Fixing plate; 25. Adjusting screw four. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] Example 1, such as Figures 1 to 4As shown, this utility model is a magnetic separation and recovery device for titanium dioxide acid hydrolysis tailings, including a frame 1. One end of the frame 1 is hinged to a mounting frame 21, and the other end of the mounting frame 21 is provided with an angle adjustment mechanism. Both ends of the mounting frame 21 are rotatably mounted with drive rollers 8. One end of the drive roller 8 is connected to a drive motor, and both ends of the drive rollers 8 are connected to a conveyor belt. A magnetic plate 20 is provided between the upper conveyor belt and the mounting frame 21. The frame 1 below both ends of the conveyor belt is provided with an iron slag receiving hopper 2 and a tailings receiving hopper 23 to catch the falling materials, respectively. A baffle skirt 18 is fixed at the outer edge of the conveyor belt. An inner feed trough 14 is provided above the conveyor belt. A bracket 13 is fixed to the upper outer side of the inner feed trough 14 and is fixed to the mounting frame 21. An outer feed trough 17 is fitted under the inner feed trough 14. The bottom of the inner feed trough 14 and the outer feed trough 17 are evenly distributed with material distribution holes. The outer feed trough 17 is connected to an adjustment mechanism to adjust its height.

[0016] Before operation, the height of the outer feed trough 17 can be adjusted as needed using the adjustment mechanism. During operation, the titanium dioxide acid hydrolysis tailings slurry enters from the top center of the inner feed trough 14. The drive motor rotates the drive roller 8, causing the conveyor belt to rotate counter-clockwise. The tailings slurry is evenly distributed onto the conveyor belt through the distribution holes at the bottom of the inner feed trough 14 and the outer feed trough 17. Under the drive of the conveyor belt and the magnetic force of the magnetic plate 20, the iron components in the tailings are adsorbed onto the conveyor belt and move upwards under the magnetic field of the magnetic plate 20. The non-magnetic tailings flow downwards under gravity and the slurry, falling into the tailings receiving hopper 23 for collection. The conveyor belt with adsorbed iron components continues to move. When it reaches a designated position, the iron components leave the magnetic field range and fall into the iron slag receiving hopper 2 for collection under gravity. Throughout the entire operation, the baffle skirt 18 prevents the tailings from falling off the edge of the conveyor belt.

[0017] In Example 2, based on Example 1, the adjustment mechanism includes multiple inverted U-shaped clamping plates 16 fixed to the top of the outer feed trough 17. An adjusting screw 15 is fixed to the top of each clamping plate 16, with its upper end passing through a bracket 13. Adjusting nuts are provided on both the upper and lower adjusting screws 15 of the bracket 13. The height of the outer feed trough 17 is adjusted by rotating the adjusting nuts. The diameter of the material distribution hole on the outer feed trough 17 is larger than the diameter of the material distribution hole on the inner feed trough 14.

[0018] The feed trough 17 is equipped with a flushing mechanism with adjustable height on the side near the iron slag receiving hopper 2. An inclined U-shaped liquid receiving trough 3 is provided below the conveyor belt. The higher end of the liquid receiving trough 3 is fixed to the top of the tail slag receiving hopper 23, and the lower end of the liquid receiving trough 3 guides the liquid into the iron slag receiving hopper 2.

[0019] The rinsing mechanism includes fixed plates 24 at the front and rear ends of the mounting frame 21. A rinsing trough 12 is provided between the two fixed plates 24. Rinsing water holes are evenly distributed at the bottom of the rinsing trough 12. A water inlet pipe 11 is provided in the middle of the upper part of the rinsing trough 12. Multiple distribution water holes are provided along the axial direction at the bottom of the water inlet pipe 11. Adjusting screws 10 are fixed at the front and rear ends of the rinsing trough 12. A strip-shaped hole is provided on the fixed plate 24 along the vertical direction. The outer end of the adjusting screw 10 passes through the strip-shaped hole and is connected to a locking nut. The water inlet pipe 11 is connected to the cleaning water supply pipe and the water pump. The cleaning water entering through the water inlet pipe 11 is evenly distributed in the rinsing trough 12, and then sprayed onto the conveyor belt through the distribution water holes at the bottom of the rinsing trough 12 to rinse away the iron impurities separated by magnetic separation and remove the sticky non-iron impurities.

[0020] A baffle plate 4 is fixed on the left end of the frame 1 of the conveyor belt, and a baffle plate 22 is fixed on the right end of the frame 1 of the conveyor belt. A flushing pipe 7 is fixed on the upper part of the baffle plate 4, and multiple flushing nozzles are fixed on the lower right side of the flushing pipe 7, facing the separation point between the drive roller 8 and the conveyor belt. The flushing pipe 7 is connected to a cleaning water supply pipe and a water pump. The flushing water entering the flushing pipe 7 will be sprayed out from the flushing nozzles and then sprayed towards the separation point between the drive roller 8 and the conveyor belt to wash away iron debris on the conveyor belt.

[0021] The angle adjustment mechanism includes an adjustment plate fixed to the front and rear sides of the left end of the mounting bracket 21. An adjustment screw 3 19 is hinged to the bottom of the adjustment plate, and a support frame is connected to the lower end of the adjustment screw 3 19. The support frame is fixed to the frame 1, and locking nuts are provided on the adjustment screw 3 19 on the upper and lower parts of the support frame. Before use, the locking nuts can be rotated to adjust the tilt angle of the mounting bracket 21.

[0022] A tensioning frame 6 is hinged to the bottom left end of the mounting frame 21. Tensioning rollers 5 are rotatably mounted on the front and rear tensioning frames 6. The lower left end of the conveyor belt passes over the tensioning rollers 5. An adjusting screw 4 25 is hinged to the tensioning frame 6. A limiting sleeve 9 is fitted onto the adjusting screw 4 25 and is fixedly mounted on the mounting frame 21. Both ends of the limiting sleeve 9 are threaded and fitted with fixing nuts on the adjusting screw 4 25. Before use, the fixing nuts can be rotated to adjust the position of the tensioning rollers 5, thereby tensioning the conveyor belt.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0024] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A titanium dioxide acidolysis tailings magnetic separation recovery device, comprising a rack (1), one end of the rack (1) is hingedly connected with a mounting frame (21), the other end of the mounting frame (21) is provided with an angle adjusting mechanism, both ends of the mounting frame (21) are rotatably provided with drive rollers (8), both ends of the drive rollers (8) are connected with conveying belts, and a magnetic plate (20) is arranged between the upper conveying belt and the mounting frame (21), characterized in that: The frame (1) below both ends of the conveyor belt is equipped with iron slag receiving hopper (2) and tail slag receiving hopper (23) to catch the falling materials respectively. A baffle skirt (18) is fixed at the outer edge of the conveyor belt. An inner feed trough (14) is provided above the conveyor belt. A bracket (13) is fixed on the upper outer side of the inner feed trough (14). The bracket (13) is fixed on the mounting frame (21). An outer feed trough (17) is fitted at the lower part of the inner feed trough (14). The bottom of the inner feed trough (14) and the outer feed trough (17) are evenly distributed with material distribution holes. The outer feed trough (17) is connected to an adjustment mechanism to adjust its height.

2. The titanium dioxide acid hydrolysis tailings magnetic separation recovery device according to claim 1, characterized in that: The adjustment mechanism includes multiple inverted U-shaped clamps (16) fixed to the top of the feed trough (17). An adjustment screw (15) is fixed to the top of the clamps (16). The upper end of the adjustment screw (15) passes through the bracket (13). Adjustment nuts are provided on the adjustment screws (15) above and below the bracket (13).

3. The titanium dioxide acid hydrolysis tailings magnetic separation recovery device according to claim 1, characterized in that: The feed trough (17) is equipped with a flushing mechanism that can adjust the height position on the side near the iron slag receiving hopper (2). The conveyor belt is equipped with an inclined U-shaped liquid receiving trough (3). The higher end of the liquid receiving trough (3) is fixed to the top of the tail slag receiving hopper (23), and the lower end of the liquid receiving trough (3) guides the liquid into the iron slag receiving hopper (2).

4. The titanium dioxide acid hydrolysis tailings magnetic separation recovery device according to claim 3, characterized in that: The rinsing mechanism includes a fixing plate (24) fixed to the front and rear ends of the mounting bracket (21). A rinsing groove (12) is provided between the two fixing plates (24). Rinsing water holes are evenly provided at the bottom of the rinsing groove (12). A water inlet pipe (11) is provided in the middle of the upper part of the rinsing groove (12). Multiple distribution water holes are provided at the bottom of the water inlet pipe (11) along the axial direction. Adjusting screws (20) are fixed at the front and rear ends of the rinsing groove (12). A strip hole along the vertical direction is provided on the fixing plate (24). The outer end of the adjusting screw (20) passes through the strip hole and is connected to a locking nut.

5. The titanium dioxide acid hydrolysis tailings magnetic separation recovery device according to claim 1, characterized in that: A baffle plate 1 (4) is fixed on the frame (1) at the left end of the conveyor belt, and a baffle plate 2 (22) is fixed on the frame (1) at the right end of the conveyor belt. A flushing pipe (7) is fixed on the upper part of the baffle plate 1 (4), and multiple flushing nozzles facing the separation point between the drive roller (8) and the conveyor belt are fixed on the lower right side of the flushing pipe (7).

6. The titanium dioxide acid hydrolysis tailings magnetic separation recovery device according to claim 1, characterized in that: The angle adjustment mechanism includes an adjustment plate fixed to the front and rear sides of the left end of the mounting frame (21). The bottom of the adjustment plate is hinged with an adjustment screw three (19). The lower end of the adjustment screw three (19) is connected to a support frame. The support frame is fixed on the frame (1). Locking nuts are provided on the adjustment screw three (19) above and below the support frame.

7. The titanium dioxide acid hydrolysis tailings magnetic separation recovery device according to claim 1, characterized in that: A tensioning frame (6) is hinged to the bottom left end of the mounting frame (21). Tensioning rollers (5) are rotatably mounted on the front and rear tensioning frames (6). The lower left end of the conveyor belt passes over the tensioning rollers (5). An adjusting screw four (25) is hinged to the tensioning frame (6). A limit sleeve (9) is fitted on the adjusting screw four (25). The limit sleeve (9) is fixedly mounted on the mounting frame (21). Both ends of the limit sleeve (9) are provided with a fixed nut that is threaded and installed on the adjusting screw four (25).

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