A dense machine overflow water recycling system in an alpine water-deficient area
By designing a thickener overflow water recycling system in a cold and water-scarce region, the problem of thickener overflow water resource utilization has been solved, realizing water resource recycling and stable system operation, avoiding groundwater waste and the risk of freezing expansion of water supply pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA NONFERROUS METAL INDS FOREIGN ENG & CONSTR
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-19
AI Technical Summary
In high-altitude, cold, and water-scarce regions, the resource utilization of concentrated machine overflow water is difficult to achieve, leading to the waste of groundwater resources and the freezing and bursting of water supply pipelines, which affects production stability.
A thickener overflow water recycling system is designed. Through components such as a self-cleaning filter, an overflow storage tank, a flocculant addition device, and a pressure storage tank, the overflow water is filtered and pressurized for use as shaft seal water and flocculant addition, reducing dependence on groundwater, avoiding long-distance water supply pipelines, and realizing the recycling of water resources.
It effectively conserves groundwater resources, avoids freezing and bursting of water supply pipelines, and improves the stability of system operation and the continuity of production.
Smart Images
Figure CN224377779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mineral processing equipment technology, specifically to a thickener overflow water recycling system for high-altitude, cold, and water-scarce regions. Background Technology
[0002] During the tailings backfilling process, the tailings are thickened by the thickener, which generates a large amount of overflow water. If the small amount of tailings contained in the thickener overflow water is returned to the beneficiation plant for recycling, it will interfere with the beneficiation plant's production indicators. How to make reasonable use of the thickener overflow water is a technical problem that urgently needs to be solved.
[0003] During the operation of the thickener, a flocculant solution is prepared by dissolving dry powder in water using a flocculant addition device. The water used here is groundwater, and the shaft seal water of the underflow slurry pump also uses groundwater, which is pumped from an external pumping station outside the production workshop. In winter, long-distance outdoor water supply pipelines require rock wool electric heating for insulation. If a section fails, the risk of the entire pipeline freezing and bursting increases dramatically, making repairs difficult and disrupting production. Furthermore, to prevent pipeline freezing, the valves in the new water supply system must remain open to maintain water flow, further contributing to water resource depletion. Therefore, how to achieve resource utilization of thickener overflow water, conserve groundwater resources, and avoid disruptions to normal operation due to freezing and bursting of outdoor water supply pipelines has become a pressing technological challenge. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a denser overflow water recycling system for high-altitude and water-scarce areas, so as to save groundwater resources, eliminate the need for long-distance outdoor water supply pipelines, and avoid the impact on normal operation caused by freezing and bursting of outdoor water supply pipelines.
[0005] The purpose of this utility model is achieved through the following technical solution: a thickener overflow water recycling system for high-altitude, cold, and water-scarce regions, comprising a thickener, with the concentrator connected to the thickener via a tailings conveying pipeline, and further including a self-cleaning filter located below the overflow port of the thickener, and an overflow storage tank, flocculant addition device, pressure storage tank, and pit located below the self-cleaning filter. The overflow port of the thickener is connected to the inlet of the self-cleaning filter via an overflow water pipeline, and the filtered water outlet of the self-cleaning filter is connected to the concentrator via a first filtered water pipeline, a second filtered water pipeline, and a third filtered water pipeline, respectively. The overflow storage tank, the flocculant addition device, and the pressure storage tank are connected. The return water inlet of the overflow storage tank is connected to the high-level water tank via a return water pump and a return water pipeline. The outlet of the high-level water tank is connected to the beneficiation plant's return water pipeline. The water inlet of the overflow storage tank is connected to the thickener via a water inlet pump and a thickener water inlet pipeline. The outlet of the flocculant addition device is connected to the thickener via a flocculant addition pipeline. The pressure storage tank is connected to the shaft seal water inlet of the underflow slurry pump via a shaft seal water supply pipeline. The shaft seal water outlet of the underflow slurry pump is connected to the pit via a shaft seal water drainage pipeline.
[0006] The drain outlet of the self-cleaning filter is connected to the pit via a drain pipe, and the pit is connected to the thickener via a slurry pump and a tailings recycling pipeline.
[0007] It also includes a mixer located below the thickener. The tailings outlet of the thickener is connected to the inlet of the mixer via a tailings discharge pipeline and an underflow slurry pump. The middle section of the thickener's water supply pipeline is connected to the inlet of the mixer via a thickening water pipeline and a valve. The inlet of the mixer is also connected to a cement addition pipeline.
[0008] The beneficial effects of this utility model are as follows: In this utility model, the overflow water of the thickener is filtered through a self-cleaning filter, and the filtered water enters the pressure storage tank, flocculant addition device, and overflow storage tank through pipelines. The pressure storage tank pressurizes the filtered water to 1.2-1.3 MPa and then provides shaft seal water to the underflow slurry pump. The shaft seal water of the underflow slurry pump and the flocculant addition device both use filtered water generated in the production workshop, eliminating the need for groundwater, reducing water waste, and eliminating the need for long-distance water supply pipelines, making the system operation more stable. After the self-cleaning filter has been working for a period of time, it can automatically backwash. The tailings discharged from the backwash are discharged from the drain outlet into the pit, and the shaft seal water is also discharged into the pit. The tailings and shaft seal water are sent back to the thickener by the slurry pump and tailings reuse pipeline, avoiding waste of tailings and water resources. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model.
[0010] In the diagram: 1-Thickener; 2-Overflow water pipeline; 3-Self-cleaning filter; 4-First filter water pipeline; 5-Second filter water pipeline; 6-Third filter water pipeline; 7-Pressure storage tank; 8-Flocculant addition device; 9-Overflow storage tank; 10-Thickener makeup water pipeline; 11-Return water pump; 12-High-level water tank; 13-Concentrator return water pipeline; 14-Concentrator; 15-Tailings conveying pipeline; 16-Sewage pipeline; 17-Pit; 18-Slurry pump; 19-Shaft seal water supply pipeline; 20-Bottom flow slurry pump; 21-Shaft seal water drainage pipeline; 22-Thickening water pipeline; 23-Tailings reuse pipeline; 24-Tailings discharge pipeline; 25-Mixer; 26-Cement addition pipeline; 27-Make-up water pump; 28-Return water pipeline; 29-Flocculant addition pipeline. Detailed Implementation
[0011] The present invention will now be described in detail with reference to the accompanying drawings.
[0012] like Figure 1 As shown, a thickener overflow water recycling system for high-altitude, water-scarce regions includes a thickener 1. A treatment plant 14 is connected to the thickener 1 via a tailings conveying pipeline 15. The system also includes a self-cleaning filter 3 located below the overflow port of the thickener 1, and an overflow storage tank 9, a flocculant addition device 8, a pressure storage tank 7, and a pit 17 located below the self-cleaning filter 3. The overflow port of the thickener 1 is connected to the inlet of the self-cleaning filter 3 via an overflow water pipeline 2. The filtered water outlet of the self-cleaning filter 3 is connected to the overflow storage tank 9 and the flocculant addition device 8 via a first filtered water pipeline 4, a second filtered water pipeline 5, and a third filtered water pipeline 6, respectively. The flocculant addition device 8 and the pressure storage tank 7 are connected. The return water inlet of the overflow storage tank 9 is connected to the high-level water tank 12 through the return water pump 11 and the return water pipeline 28. The outlet of the high-level water tank 12 is connected to the beneficiation plant return water pipeline 13. The water inlet of the overflow storage tank 9 is connected to the thickener 1 through the water inlet pump 27 and the thickener water inlet pipeline 10. The outlet of the flocculant addition device 8 is connected to the thickener 1 through the flocculant addition pipeline 29. The pressure storage tank 7 is connected to the shaft seal water inlet of the underflow slurry pump 20 through the shaft seal water supply pipeline 19. The shaft seal water outlet of the underflow slurry pump 20 is connected to the pit 17 through the shaft seal water drainage pipeline 21.
[0013] During operation, the concentrator 14 supplies tailings to the thickener 1 via the tailings conveying pipeline 15. The overflow water from the thickener 1 is filtered by the self-cleaning filter 3, and the filtered water enters the pressure storage tank 7, the flocculant addition device 8, and the overflow storage tank 9 through pipelines. The pressure storage tank 7 pressurizes the filtered water to 1.2-1.3 MPa and then provides shaft seal water to the underflow slurry pump 20. The shaft seal water of the underflow slurry pump 20 and the flocculant addition device 8 both use filtered water generated in the production workshop, eliminating the need for groundwater, reducing water waste, and eliminating the need for long-distance water supply pipelines, making the system operation more stable.
[0014] The drain outlet of the self-cleaning filter 3 is connected to the pit 17 via the drain pipe 16. The pit 17 is connected to the thickener 1 via the slurry pump 18 and the tailings reuse pipe 23. After the self-cleaning filter 3 has been working for a period of time, it can automatically backwash. The tailings discharged from the backwash outlet enter the pit 17, and the shaft seal water is also discharged into the pit 17. The tailings and shaft seal water are sent back to the thickener 1 by the slurry pump 18 and the tailings reuse pipe 23, thus avoiding the waste of tailings and water resources.
[0015] It also includes a mixer 25, which is located below the overflow storage tank 9. The tailings outlet of the thickener 1 is connected to the inlet of the mixer 25 through the tailings discharge pipeline 24 and the underflow slurry pump 20. The middle section of the thickener water supply pipeline 10 is connected to the inlet of the mixer 25 through the thickening water pipeline 22 and the valve. The inlet of the mixer 25 is also connected to the cement addition pipeline 26. Tailings with a mass concentration of 72-78% are discharged from the tailings outlet at the lower end of thickener 1. This tailings is discharged into mixer 25 via tailings discharge pipe 24 and underflow slurry pump 20. Cement is added to mixer 25 via cement addition pipe 26. Filtered water supplied to the inlet of mixer 25 via thickening water pipe 22 serves as thickening water. A stable supply of thickening water is achieved through the height difference between the overflow level of thickener 1 and the inlet of mixer 25 (the middle section of thickener water supply pipe 10 connects to thickening water pipe 22, serving both as water supply to thickener 1 and as thickening water delivery; during operation, after thickener 1 reaches the overflow level, water supply pump 27 is shut off, and the water in thickening water pipe 22 fills the pipe, creating a siphon force that supplies thickening water to mixer via thickener overflow, eliminating the need for additional pumping power). The flow rate of thickening water is adjusted via valves. The material output from mixer 25 is used for downhole filling.
[0016] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A thickener overflow water recycling system in an alpine water-deficient area, comprising a thickener, and a concentrator connected with the thickener through a tailings conveying pipeline, characterized in that: It also includes a self-cleaning filter located below the overflow port of the thickener, and an overflow storage tank, a flocculant adding device, a pressure storage tank, and a pit located below the self-cleaning filter. The overflow port of the thickener is connected to the inlet of the self-cleaning filter via an overflow water pipeline. The filtered water outlet of the self-cleaning filter is connected to the overflow storage tank, the flocculant adding device, and the pressure storage tank via a first filtered water pipeline, a second filtered water pipeline, and a third filtered water pipeline, respectively. The overflow storage tank... The return water inlet is connected to the high-level water tank via a return water pump and a return water pipeline. The outlet of the high-level water tank is connected to the return water pipeline of the beneficiation plant. The water inlet of the overflow storage tank is connected to the thickener via a water inlet pump and a thickener water inlet pipeline. The outlet of the flocculant addition device is connected to the thickener via a flocculant addition pipeline. The pressure storage tank is connected to the shaft seal water inlet of the underflow slurry pump via a shaft seal water supply pipeline. The shaft seal water outlet of the underflow slurry pump is connected to the pit via a shaft seal water drainage pipeline.
2. The thickener overflow water recycling system for high-altitude, cold, and water-scarce regions according to claim 1, characterized in that: The drain outlet of the self-cleaning filter is connected to the pit via a drain pipe, and the pit is connected to the thickener via a slurry pump and a tailings recycling pipeline.
3. A thickener overflow water recycling system for high-altitude, cold, and water-scarce regions according to claim 2, characterized in that: It also includes a mixer located below the thickener. The tailings outlet of the thickener is connected to the inlet of the mixer via a tailings discharge pipeline and an underflow slurry pump. The middle section of the thickener's water supply pipeline is connected to the inlet of the mixer via a thickening water pipeline and a valve. The inlet of the mixer is also connected to a cement addition pipeline.