Mine tail mud treatment equipment

Abstract

The utility model discloses mine tail mud treatment equipment which comprises a rack, a horizontal screw centrifuge and a flushing tank, the horizontal screw centrifuge is arranged in the rack, fluid outlets are formed in the two sides of the horizontal screw centrifuge, the fluid outlets are connected with a water filtering device, the water filtering device is connected with a water tank, and the flushing tank is connected with a water pump. A washing tank is arranged at the top of the water tank, a feeding opening is formed in the top of the washing tank, a second water pump is arranged on one side of the feeding opening, a high-pressure spray head is connected to the bottom of the second water pump, a sieve plate is arranged in the center of the interior of the washing tank and is obliquely arranged, and a feeding pipe is connected to one side of the sieve plate; the mine tailing mud is pretreated by adopting the high-pressure spray head, the pollution to the environment is reduced through the pretreatment mode of spraying water by the high-pressure spray head, the safety efficiency is high, the water filtering devices are arranged at the centrifugal outlet of the water body and the outlet of the flushing box to recycle the water body, and the requirement of sustainable development is met.

Description

Technical Field

[0001] The utility model relates to the technical field of mine tailings processing equipment, in particular to mine tailings processing equipment. Background Art

[0002] Mine tailings, also known as tailings, are the remaining waste after the useful minerals are separated from the ore by physical or chemical treatment. The treatment of mine tailings is based on environmental protection, resource conservation and safe production. Since the tailings contain a lot of water during the selection stage, excessive water content can easily lead to safety problems, such as tailings dam collapse accidents. Therefore, tailings concentration and dehydration is one of the important treatment links.

[0003] According to the existing patent CN110586344B, a horizontal screw centrifuge includes: a flocculant tube, a feed tube, a material conveying tube, a screw pusher, a drum, a cover, and a differential; the flocculant tube includes: an inlet straight tube section, a spiral tube section, an outlet straight tube section, a front mixed flow blade, a conical outlet and a spiral tube transition section; the spiral tube section is connected to the inlet straight tube section through the spiral tube transition section, the spiral tube section is connected to one end of the outlet straight tube section through the spiral tube transition section, the other end of the outlet straight tube section is connected to the large end face of the conical outlet, and a double spiral blade is welded on the side of the outlet straight tube section; the feed tube includes: a connecting flange, a front mixing tube, a rear mixing tube and a fishtail blade, and the fishtail blade is fixed in the rear mixing tube; the material conveying tube includes: a connecting flange and a straight tube; this patent can improve the mixing effect of flocculant and material and prevent the feed tube from being blocked during the operation of the horizontal screw centrifuge.

[0004] However, the patent uses flocculants to pre-treat mine tailings, which will cause environmental pollution, increase the complexity of operation and labor costs. At the same time, the lack of resource recycling mechanism is not conducive to saving and environmental protection. Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a mine tailings treatment equipment is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a mine tailings treatment device to solve the problems of pollution, complexity and increased labor costs caused by the pre-treatment of mine tailings by flocculants in the above-mentioned treatment equipment proposed in the above-mentioned background technology during use, and at the same time lack of resource utilization means, which does not meet the requirements of sustainable development.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mine tailings processing equipment, comprising a frame, a horizontal screw centrifuge and a flushing box, characterized in that: a horizontal screw centrifuge is arranged inside the frame, a motor is arranged on one side of the horizontal screw centrifuge, a rotating shaft is arranged on the other side of the horizontal screw centrifuge, solid material outlets are arranged on both sides of the horizontal screw centrifuge close to the motor, fluid outlets are arranged on both sides of the horizontal screw centrifuge close to the rotating shaft, the fluid outlet is connected to a water filter device, a No. 1 water pump is connected to one side of the No. 1 water pump, a water tank is connected to one side of the No. 1 water pump, a flushing box is arranged on the top of the water tank, a feed port is arranged on the top of the flushing box, a No. 2 water pump is arranged on one side of the feed port, a high-pressure nozzle is connected to the bottom of the No. 2 water pump, a sieve plate is arranged at the inner center of the flushing box, and the sieve plate is arranged obliquely, and a feed pipe is connected to one side of the sieve plate.

[0007] Furthermore, a water guide groove is provided on the lower inner side of the flushing box, one side of the water guide groove is connected to a water down pipe, and one side of the water down pipe is connected to the water filtering device.

[0008] Furthermore, the horizontal screw centrifuge includes a machine cover, a drum, a spiral and a feed pipe, the interior of the machine cover is connected to the drum, the interior of the drum is provided with a spiral, a feed pipe is provided at the inner center of the spiral, and fixed blocks are provided on both sides of the feed pipe.

[0009] Furthermore, the water filtration device is internally connected with activated carbon, and a microporous filter membrane is connected below the activated carbon.

[0010] Furthermore, the water inlet of the second water pump is connected to a water pipe, and one side of the water pipe is connected to the water tank.

[0011] Furthermore, the high-pressure nozzles are provided in a plurality of groups, and the high-pressure nozzles are evenly arranged in a horizontal direction along the top of the flushing box.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the mine tailings treatment equipment adopts a high-pressure nozzle to pre-treat the mine tailings, and the pre-treatment method of spraying water by the high-pressure nozzle reduces the pollution to the environment, has high safety and efficiency, and is provided with a water filter device at the centrifugal outlet and the flushing box outlet of the water body to allow the water body to be recycled, which meets the requirements of sustainable development. The specific contents are as follows:

[0013] A feed port is provided on the top of the flushing box. The mine tailings first enter the flushing box through the feed port and fall on the sieve plate. The sieve plate is an obliquely placed water screen plate that can remove moisture from the tailings under the action of gravity. The mine tailings are flushed through a high-pressure nozzle arranged on the top of the flushing box. The solid particles in the tailings are dispersed by a strong water flow, thereby achieving the purpose of cleaning and separation. No chemical agents need to be added, reducing the risk of chemical pollution to the environment. The water used for flushing carries impurities through the sieve plate and falls into the water guide trough on the lower side of the flushing box. A downpipe is provided at the center of the water guide trough, and the other side of the downpipe is connected to a water filter device. The water filter device is provided with two layers of combined filtration. The first layer is activated carbon, which can effectively improve the taste and smell of water. Taste, remove some soluble pollutants in the water, the second time is the microporous filter membrane intercepting tiny suspended matter, bacteria and macromolecular substances in the water, which can effectively remove tiny suspended matter and microorganisms, the filtered water is transported into the water tank through a water pump, and the water tank is connected to a water pump used by a high-pressure nozzle through a water pipe, so that the water can be recycled, which helps to save water resources and reduce wastewater discharge, and at the same time, high-pressure flushing helps to better recover the useful components in the tailings. The pre-treated mine tailings are treated by a horizontal screw centrifuge to reduce the moisture content of the tailings, thereby reducing the safety hazards of the tailings pond and reducing the risk of leakage of harmful substances. The water separated by the horizontal screw centrifuge also flows into the water filtration device, which helps to recycle water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a mine tailings treatment device of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a horizontal screw centrifuge for mine tailings processing equipment of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a water filtration device for mine tailings treatment equipment of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the side structure of a mine tailings processing device.

[0018] In the figure: 1. frame; 2. horizontal screw centrifuge; 3. motor; 4. rotating shaft; 5. solid material outlet; 6. fluid outlet; 7. water filtration device; 8. No. 1 water pump; 9. water tank; 10. flushing tank; 11. feed inlet; 12. No. 2 water pump; 13. high-pressure nozzle; 14. sieve plate; 15. water guide trough; 16. downpipe; 17. machine cover; 18. drum; 19. spiral; 20. feed pipe; 21. fixing block; 22. activated carbon; 23. microporous filter membrane; 24. water pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 - Figure 4 The utility model provides a technical solution: a mine tailings processing equipment, including a frame 1, a horizontal screw centrifuge 2 and a flushing box 10. The horizontal screw centrifuge 2 is arranged at the center of the frame 1. The horizontal screw centrifuge 2 is composed of a hood 17, a drum 18, a screw 19 and a motor 4. The hood 17 is a metal structure shell, which plays a role in protecting internal parts and accommodating materials. The drum 18 is made of high-strength alloy material and is designed to ensure stability and corrosion resistance during high-speed rotation. The screw 19 is a coaxial screw conveyor installed inside the drum, which is responsible for continuously pushing the solid phase material deposited on the drum wall to the slag discharge port. A feed pipe 20 is provided at the inner center of the drum 18. The feed pipe 20 can allow the mine tailings to enter the drum 18 for centrifugal separation of solids and fluids. Fixed blocks 21 are provided on both sides of the feed pipe 20. The fixed blocks 21 are made of rubber and play the role of fixing the feed pipe 20 and sealing the pores. A solid material outlet 5 is provided on one side of the horizontal screw centrifuge 2. The solid material outlet 5 is a pipe-mounted channel that wraps the front end of the drum 18. The dehydrated solid matter can be discharged through the reserved holes. A fluid outlet 6 is provided on the other side of the horizontal screw centrifuge 2. The fluid outlet 6 can discharge the water separated by the horizontal screw centrifuge 2.

[0021] The fluid outlet 6 is connected to a water filter device 7, which is a rectangular parallelepiped made of metal material with a smooth inner wall. Activated carbon 22 and a microporous filter membrane 23 are arranged inside the water filter device 7. The activated carbon 22 can effectively improve the taste and smell of water and remove some soluble pollutants in the water. The microporous filter membrane 23 can intercept tiny suspended matter, bacteria and macromolecular substances in the water and can effectively remove tiny suspended matter and microorganisms. The water filter device 7 plays a role in filtering water for recycling. One side of the water filter device 7 is connected to a No. 1 water pump 8, which sucks the filtered water in the water filter device 7 into a water tank 9 arranged on the other side. The water tank 9 can store the filtered water and supply it to the flushing tank 10 for use, so as to achieve the recycling of water resources.

[0022] A flushing box 10 is arranged on the top of the water tank 9. The flushing box 10 is a box body made of metal material. A feed port 11 is opened on the top of the flushing box 10. The feed port 11 is made of stainless steel and has a smooth inner wall to prevent the residue of mine tailings. A No. 2 water pump 12 is connected to one side of the feed port 11. The water inlet of the No. 2 water pump 12 is connected to the water tank 9 through a water pipe 24. The water pipe 24 is made of soft material. The filtered water is then transported back through the No. 2 water pump 12 for reuse. Several groups of high-pressure nozzles 13 are arranged at the bottom of the No. 2 water pump 12. Several groups of high-pressure nozzles 13 are arranged, and the high-pressure nozzles 13 are evenly arranged along the top of the flushing box 10. The filtered water is used to perform high-pressure flushing on the mine tailings below. The overly strong water flow disperses the solid particles in the tailings. In order to achieve the purpose of cleaning and separation, a sieve plate 14 is arranged at the inner center of the flushing box 10. The sieve plate 14 is a sieve plate with a mesh that can pass water, and the sieve plate 14 is placed obliquely in the flushing box 10, so as to make the mine tailings to be initially separated from the water contained in it under the action of gravity. At the same time, one side is connected to the feed pipe 20, so that the mine tailings enter the horizontal screw centrifuge 2 under the action of gravity, so that the process is automated and labor costs are saved. A water guide trough 15 is arranged below the sieve plate 14, and the water guide trough 15 serves to accommodate the water discharged by the sieve plate 14 and the high-pressure nozzle 13. A downpipe 16 is arranged at the center of the water guide trough 15. The downpipe 16 is a tubular structure, and one side is connected to the water filter device 7, which serves to transport the accommodated water into the water filter device 7 for filtration.

[0023] Working principle: When using a mine tailings treatment equipment, the mine tailings are added into the flushing box 10 from the feed port 11, and the mine tailings will fall onto the sieve plate 14 obliquely arranged inside the flushing box 10. The sieve plate 14 will filter part of the water carried in the mine tailings and fall into the water guide trough 15 below through the sieve plate 14. The mine tailings slide forward under the action of gravity, and a number of groups of high-pressure nozzles 13 arranged on the top of the flushing box will flush it, and the solid particles in the tailings will be dispersed by a strong water flow, so as to achieve the purpose of cleaning and separation. After the flushing, the mine tailings enter the interior of the horizontal screw centrifuge 2 through the feed pipe 20 to start solid-liquid separation. The pre-treated mine tailings are treated by the horizontal screw centrifuge to reduce the moisture content of the tailings, thereby reducing the safety hazards of the tailings pond and reducing the risk of leakage of harmful substances. Through the separation of the horizontal screw centrifuge 2, the mine tailings The solid components in the mountain tailings will be discharged through the solid material outlet 5 for collection and reuse, and the liquid components in the mine tailings will enter the water filter device 7 through the fluid outlet 6 for filtration. Through the filtration of activated carbon 22 and microporous filter membrane 23, the tiny particulate impurities and color, odor, microorganisms, etc. in the water body can be removed, and then transported into the water tank 9 through the No. 1 water pump 8. The downpipe 16 arranged at the center of the water guide trough 15 on the lower side of the flushing box 10 above the water tank 9 is also connected to the water filter device 7, and the high-pressure flushing water and the preliminarily filtered water are sent to the water filter device 7 for filtration, and then sent to the water tank 9. The water tank 9 is connected to the No. 2 water pump 12 on the top of the flushing box 10 through a water pipe 24. The No. 2 water pump 12 pumps the filtered water inside the water tank 9 to the high-pressure nozzle 13 for use, thereby achieving the recycling of water resources, saving labor costs, and improving the treatment efficiency of mine tailings.

Claims

1. A mine tailings treatment device, comprising a frame (1), a horizontal screw centrifuge (2) and a flushing box (10), characterized in that: A horizontal screw centrifuge (2) is arranged inside the frame (1), a motor (3) is arranged on one side of the horizontal screw centrifuge (2), a rotating shaft (4) is arranged on the other side of the horizontal screw centrifuge (2), solid material outlets (5) are arranged on both sides of the horizontal screw centrifuge (2) close to the motor (3), fluid outlets (6) are arranged on both sides of the horizontal screw centrifuge (2) close to the rotating shaft (4), the fluid outlet (6) is connected to a water filter (7), and one side of the water filter (7) is connected to a first water pump. (8), one side of the first water pump (8) is connected to a water tank (9), a flushing box (10) is arranged on the top of the water tank (9), a feed port (11) is arranged on the top of the flushing box (10), a second water pump (12) is arranged on one side of the feed port (11), a high-pressure nozzle (13) is connected to the bottom of the second water pump (12), a sieve plate (14) is arranged at the inner center of the flushing box (10), and the sieve plate (14) is arranged obliquely, and one side of the sieve plate (14) is connected to a feed pipe (20).

2. The mine tailings treatment equipment according to claim 1, characterized in that: A water guide groove (15) is provided on the lower inner side of the flushing box (10), one side of the water guide groove (15) is connected to a water down pipe (16), and one side of the water down pipe (16) is connected to the water filtering device (7).

3. The mine tailings treatment equipment according to claim 1, characterized in that: The horizontal screw centrifuge (2) comprises a machine cover (17), a drum (18), a spiral (19) and a feed pipe (20); the interior of the machine cover (17) is connected to the drum (18); the interior of the drum (18) is provided with a spiral (19); the feed pipe (20) is provided at the center of the spiral (19); and fixing blocks (21) are provided on both sides of the feed pipe (20).

4. The mine tailings treatment equipment according to claim 1, characterized in that: The water filtering device (7) is internally connected to activated carbon (22), and a microporous filter membrane (23) is connected below the activated carbon (22).

5. The mine tailings treatment equipment according to claim 1, characterized in that: The water inlet of the second water pump (12) is connected to a water pipe (24), and one side of the water pipe (24) is connected to the water tank (9).

6. The mine tailings treatment equipment according to claim 1, characterized in that: The high-pressure spray heads (13) are provided in a plurality of groups, and the high-pressure spray heads (13) are evenly arranged in a horizontal direction along the top of the flushing box (10).

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