Kaolin magnetic tailing wastewater recovery device

Abstract

The utility model provides a kaolin magnetic tailing wastewater recovery device, which relates to the technical field of mineral processing equipment of non-metallic ores, and comprises a precipitation system, which comprises a feeding pipeline and a plurality of precipitation tanks, the upper end of each precipitation tank is provided with an overflow weir, the lower end of each precipitation tank is provided with a discharge port, and each precipitation tank is internally provided with a feeding cylinder and a honeycomb inclined pipe; the honeycomb inclined pipe is arranged in the middle of the discharge port, the lower end of the feeding cylinder penetrates through the honeycomb inclined pipe, and the feeding pipeline is connected with the upper end of the feeding cylinder of each sedimentation tank; a water return system; and a filter pressing system. The magnetic tailing wastewater treatment device has the beneficial effects that magnetic tailing wastewater is input into the lower part of the sedimentation tank through the feeding cylinder, the magnetic tailing wastewater moves upwards through the honeycomb inclined tube from bottom to top to be separated into supernate and sedimentation tailings, the supernate is separated into clear water through the overflow weir, and the sedimentation tailings are input into the filter press to be treated to obtain tailing products; the honeycomb inclined tube is good in laminar flow state, particle sedimentation is not interfered by turbulent flow, the settleability is good, and filter pressing dehydration of rear-section sedimentation tailings is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of non-metallic mineral beneficiation and processing equipment, and in particular to a kaolin magnetic tailings wastewater recovery device. Background Technology

[0002] In the kaolin magnetic separation process, the separation chamber moves back and forth inside and outside a high-gradient magnetic field to perform magnetic separation, cleaning the separation chamber, rinsing the separation chamber, and finishing with steel wool. After the separation chamber completes magnetic separation within the magnetic field, the slurry in the separation chamber is pushed to the magnetic concentrate pool with clean water. This leaves only water and magnetic impurities adsorbed on the steel wool in the chamber, forming tailings, which are then washed in-situ and enter the magnetic tailings pool. After in-situ cleaning, the separation chamber exits to a non-magnetic field area. To ensure the separation chamber is as clean as possible, it is rinsed again with a large amount of clean water, once in both forward and reverse directions. All the rinsing wastewater also enters the magnetic tailings pool. After the separation chamber enters the magnetic field, the slurry begins to enter, pushing the water in the separation chamber forward into the magnetic tailings pool. Therefore, a large amount of magnetic tailings wastewater is generated during each cycle of the magnetic separator in the kaolin magnetic separation process.

[0003] Magnetic tailings wastewater mainly consists of kaolin, magnetic impurities, dispersants, and other solid substances. Current methods for treating magnetic tailings wastewater involve installing horizontal flow sedimentation tanks in the wastewater treatment workshop. The unique flow structure of these tanks allows for the rapid sedimentation of suspended solids and other solid matter. The supernatant overflows into a recycling tank for reuse, while the sludge settled at the bottom is scraped to a centralized sludge discharge trough by a scraper. Further sludge is then conveyed using grate, serpentine, or spiral conveyors for centralized discharge.

[0004] Currently, the wastewater from magnetic tailings mines is excessively large, and the kaolin particles it contains are very fine, making sedimentation extremely difficult with existing technology. This results in turbidity in the supernatant. Simultaneously, the precipitates containing dispersants cake at the bottom of the tank, breaking the scraper conveyor chain. The caked precipitates are also very difficult to clean manually. This prevents the supernatant from being recycled and makes tailings mineral recovery challenging. Utility Model Content

[0005] In view of this, in order to solve the problem of the difficulty in settling kaolin particles in magnetic tailings wastewater, the present invention provides a kaolin magnetic tailings wastewater recovery device.

[0006] An embodiment of this utility model provides a kaolin magnetic tailings wastewater recovery device, comprising:

[0007] A sedimentation system includes a feed pipe and multiple sedimentation tanks. Each sedimentation tank is provided with an overflow weir at the upper end and a discharge port at the lower end. Each sedimentation tank is provided with a feed cylinder and a honeycomb inclined tube. The honeycomb inclined tube is located in the middle of the discharge port. The lower end of the feed cylinder passes through the honeycomb inclined tube. The feed pipe is connected to the upper end of the feed cylinder of each sedimentation tank.

[0008] The water return system includes a water return tank and an overflow diversion channel, wherein one end of the overflow diversion channel is connected to the upper end of each of the sedimentation tanks and the other end is connected to the water return tank;

[0009] The system includes a filter press, a slurry inlet pipe, and a filtrate pipe. The slurry inlet pipe is equipped with a slurry pump, and one end of the pump is connected to the outlet of each sedimentation tank, while the other end is connected to the filter press. One end of the filtrate pipe is connected to the filter press, and the other end is connected to the return water tank.

[0010] Furthermore, the sedimentation tank has a cylindrical upper part and a conical bottom.

[0011] Furthermore, the honeycomb inclined tube is disc-shaped, with its outer wall fixedly connected to the inner wall of the sedimentation tank, and the feed cylinder is coaxially arranged with the honeycomb inclined tube.

[0012] Furthermore, the portion of the feed cylinder located below the honeycomb inclined tube is provided with multiple ball holes.

[0013] Furthermore, the honeycomb inclined tube is a PVC filler filled with inclined holes running vertically through it.

[0014] Furthermore, the overflow weir is annular and is located inside the upper port of the sedimentation tank. The upper end of the sedimentation tank is provided with an overflow port that communicates with the overflow weir, and one end of the overflow guide channel is connected to the overflow port.

[0015] Furthermore, the upper end of the overflow weir is serrated.

[0016] Furthermore, the water return system also includes a water return pump and an inlet pipe, the inlet pipe being connected to the lower end of the water return pool, and the water return pump being mounted on the inlet pipe.

[0017] Furthermore, the water return system also includes a radar level gauge, which is installed at the top of the water return tank and connected to the water return pump. The water return pump is used to control the start and stop of the pump based on the water level detected by the radar level gauge.

[0018] Furthermore, valves are provided at the bottom of both the sedimentation tank and the return water tank.

[0019] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows:

[0020] 1. This utility model discloses a kaolin magnetic tailings wastewater recovery device. The magnetic tailings wastewater to be treated is fed into the lower part of the sedimentation tank through the feed cylinder. The magnetic tailings wastewater moves upward from bottom to top through the honeycomb inclined tube. The honeycomb inclined tube separates the magnetic tailings wastewater into supernatant and precipitated tailings. The supernatant is then separated into clear water through the overflow weir at the upper end of the sedimentation tank. The precipitated tailings are fed into a filter press for processing to obtain tailings products. The honeycomb inclined tube has a good laminar flow state, and the particle settling is not disturbed by turbulence, resulting in good settling properties, which is beneficial to the filter press dewatering of the precipitated tailings in the later stage.

[0021] 2. The kaolin magnetic tailings wastewater recovery device of this utility model adopts a conical bottom structure for the sedimentation tank. The conical bottom design of the sedimentation tank allows the particles in the magnetic tailings wastewater to naturally sink to the bottom under the action of gravity, instead of being suspended in the liquid, reducing the probability of resuspension of the sediment and reducing the phenomenon of bottom clumping, thereby improving the sedimentation effect.

[0022] 3. The kaolin magnetic tailings wastewater recovery device of this utility model utilizes the uniform ball holes designed at the bottom of the feed cylinder to feed the material at a constant speed, combined with the structural features of the honeycomb inclined tube, to achieve a highly efficient sedimentation effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a kaolin magnetic tailings wastewater recovery device according to the present invention;

[0024] Figure 2 This is the front view of the sedimentation tank;

[0025] Figure 3 This is a cross-sectional view of the sedimentation tank;

[0026] Figure 4 This is a top view of the sedimentation tank.

[0027] In the diagram: 1. Filter press; 2. Feed pump; 3. Sedimentation tank; 4. Return water tank; 5. Overflow weir; 6. Honeycomb inclined tube; 7. Feed cylinder; 8. Valve; 9. Water inlet pipe; 10. Overflow guide channel; 11. Filtrate pipe; 12. Feed pipe; 13. Slurry inlet pipe; 14. Return water pump; 15. Radar level gauge; 16. Orifice; 17. Tailings product; 18. Overflow port; 19. Discharge port. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0029] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0032] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0033] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Please refer to Figure 1 The present invention provides a kaolin magnetic tailings wastewater recovery device, including a sedimentation system, a water return system and a filter press system.

[0035] The sedimentation system includes a feed pipe 12 and multiple sedimentation tanks 3. Each sedimentation tank 3 is provided with an overflow weir 5 at the upper end and a discharge port 19 at the lower end. Each sedimentation tank 3 is provided with a feed cylinder 7 and a honeycomb inclined tube 6. The honeycomb inclined tube 6 is located in the middle of the discharge port 19. The lower end of the feed cylinder 7 passes through the honeycomb inclined tube 6. The feed pipe 12 is connected to the upper end of the feed cylinder 7 of each sedimentation tank 3.

[0036] The water return system includes a water return tank 4 and an overflow guide channel 10. One end of the overflow guide channel 10 is connected to the upper end of each sedimentation tank 3, and the other end is connected to the water return tank 4.

[0037] The filter press system includes a filter press 1, a slurry inlet pipe 13 and a filtrate pipe 11. The slurry inlet pipe 13 is equipped with a slurry inlet pump 2, and one end is connected to the outlet 19 of each of the sedimentation tanks 3 and the other end is connected to the filter press 1. One end of the filtrate pipe 11 is connected to the filter press 1 and the other end is connected to the return water tank 4.

[0038] The magnetic tailings wastewater generated after kaolin magnetic separation is transported to each of the sedimentation tanks 3 through the feed pipe 12. The magnetic tailings wastewater is fed into the sedimentation tank 3 from the bottom of the feed cylinder 7, and then moves upward through the honeycomb inclined tube 6. The honeycomb inclined tube 6 separates the magnetic tailings wastewater into supernatant and precipitated tailings. The supernatant moves upward and passes through the overflow weir 5 to separate clear water. The clear water overflowing from each of the overflow weirs 5 flows into the overflow guide channel 10 and finally flows into the return water tank 4. The precipitated tailings are transported to the filter press 1 through the slurry pump 2 for processing into tailings product 17 for recycling. The clear water generated by the filter press 1 flows into the return water tank 4 through the filtrate pipe 11, thus realizing the recycling of magnetic tailings wastewater.

[0039] It should be noted that the number of sedimentation tanks 3 can be flexibly set according to the actual amount of tailings wastewater to be treated. For example, in this embodiment, the number of sedimentation tanks 3 is set to three. Both the sedimentation tanks 3 and the return water tank 4 can be made of steel and placed side by side on the ground. In order to allow the clear water overflowing from the top of the sedimentation tank 3 to automatically flow into the return water tank 4 through the overflow guide channel 10, the height of the sedimentation tank 3 is set higher than that of the return water tank 4.

[0040] The shape of the sedimentation tank 3 can be flexibly set according to the actual application environment. Please refer to... Figure 2 and 3 As in this embodiment, the sedimentation tank 3 has a cylindrical upper part and a conical bottom. The conical bottom design of the sedimentation tank 3 allows particles in the magnetic tailings wastewater to naturally sink to the bottom under the action of gravity, rather than being suspended in the liquid, reducing the probability of resuspension of the sediment and reducing bottom clumping, thereby improving the sedimentation effect.

[0041] In some embodiments, both the sedimentation tank 3 and the return water tank 4 are equipped with valves 8 at the bottom for maintenance.

[0042] The honeycomb inclined tube 6 is generally disc-shaped, and its outer wall is fixedly connected to the inner wall of the sedimentation tank 3. The feed cylinder 7 is coaxially arranged with the honeycomb inclined tube 6. Magnetic tailings wastewater is transported to the area below the honeycomb inclined tube 6 through the feed cylinder 7, and then diffuses evenly outwards, achieving bottom-up feeding. The honeycomb inclined tube 6 is generally made of PVC filler with inclined holes running vertically through it, which has good chemical corrosion resistance and a certain mechanical strength.

[0043] In some embodiments, the portion of the feed cylinder 7 located below the honeycomb inclined tube 6 is provided with a plurality of ball holes 16, which are evenly distributed at the lower end of the feed cylinder 7, thereby achieving more uniform feeding.

[0044] Please refer to Figure 3 and 4 In some embodiments, the overflow weir 5 is annular and located inside the upper port of the sedimentation tank 3. The upper end of the sedimentation tank 3 has an overflow port 18 communicating with the overflow weir 5. One end of the overflow guide channel 10 is connected to the overflow port 18. The clear water at the upper end of the sedimentation tank 3 overflows into the overflow weir 5 and flows into the overflow guide channel 10 through the overflow port 18. Preferably, the upper end of the overflow weir 5 is serrated, ensuring a stable overflow of the supernatant from the upper end of the sedimentation tank 3 into the overflow weir 5.

[0045] To facilitate the reuse of clean water from the return water tank 4 in the upstream mineral processing stage, the return water system also includes a return water pump 14 and an inlet pipe 9. The inlet pipe 9 is connected to the lower end of the return water tank 4, and the return water pump 14 is mounted on the inlet pipe 9. The return water pump 14 pumps the clean water from the return water tank 4 through the inlet pipe 9 to the upstream mineral processing stage.

[0046] The water return system also includes a radar level gauge 15, which is installed at the top of the water return tank 4. The radar level gauge 15 is connected to the water return pump 14, which is used to control the start and stop of the pump based on the water level detected by the radar level gauge 15. The water return pump 14 is activated and deactivated according to the water level in the water return tank 4 to deliver clean water from the tank to the upstream mineral processing stage for reuse.

[0047] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0048] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A kaolin magnetic tailings wastewater recovery apparatus, characterized by, The application relates to a sedimentation system, which comprises a feeding pipe and a plurality of sedimentation tanks, each of the sedimentation tanks is provided with an overflow weir at the upper end and a discharging port at the lower end, a feeding cylinder and a honeycomb inclined pipe are arranged in each of the sedimentation tanks, the honeycomb inclined pipe is arranged in the middle of the discharging port, the feeding cylinder penetrates the honeycomb inclined pipe at the lower end, and the feeding pipe is connected with the upper end of the feeding cylinder of each of the sedimentation tanks. The application also relates to a backwater system, which comprises a backwater tank and an overflow guide groove, one end of the overflow guide groove is connected with the upper end of each of the sedimentation tanks, and the other end is connected with the backwater tank. The application further relates to a filter-pressing system, which comprises a filter press, a slurry feeding pipe and a filtrate pipe, the slurry feeding pipe is provided with a slurry feeding pump at the upper end, one end of the slurry feeding pipe is connected with the discharging port of each of the sedimentation tanks, and the other end is connected with the filter press, one end of the filtrate pipe is connected with the filter press, and the other end is connected with the backwater tank. The upper part of the sedimentation tank is in a cylindrical shape, and the bottom is in a conical shape.

2. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 1, characterised in that: The honeycomb inclined pipe is in a disc shape, the outer wall of the honeycomb inclined pipe is fixedly connected with the inner wall of the sedimentation tank, and the feeding cylinder is coaxially arranged with the honeycomb inclined pipe.

3. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 2, characterised in that: The part of the feeding cylinder below the honeycomb inclined pipe is provided with a plurality of ball holes.

4. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 3, characterised in that: The honeycomb inclined pipe is filled with inclined holes penetrating up and down.

5. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 1, characterized by: The overflow weir is in an annular shape, the overflow weir is arranged at the inner side of the upper end port of the sedimentation tank, the upper end of the sedimentation tank is provided with an overflow port communicated with the overflow weir, and one end of the overflow guide groove is connected with the overflow port.

6. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 1, characterized by: The upper end of the overflow weir is in a zigzag shape.

7. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 6, characterised in that: The backwater system further comprises a backwater pump and a water feeding pipe, the water feeding pipe is connected with the lower end of the backwater tank, and the backwater pump is arranged on the water feeding pipe.

8. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 1, characterized by: The backwater system further comprises a radar liquid level meter, the radar liquid level meter is arranged on the top of the backwater tank, the radar liquid level meter is connected with the backwater pump, and the backwater pump is used for controlling start and stop according to the liquid level detected by the radar liquid level meter.

9. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 8, characterised in that: The bottom of each of the sedimentation tank and the backwater tank is provided with a valve.

10. A kaolin magnetic tailings wastewater recovery apparatus as claimed in claim 1, characterized by: ​

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