Tailing dehydration pretreatment device

Abstract

The utility model relates to a tailing dehydration pretreatment device which comprises a hydrocyclone body, the hydrocyclone body comprises a round straight pipe and a conical pipe body fixedly connected below the round straight pipe, the round straight pipe is connected with a feeding pipe, the feeding pipe is spirally arranged, one end of the feeding pipe is tangent to and communicated with the round straight pipe, and the other end of the feeding pipe is communicated with the conical pipe body. The feeding pipe is arranged to be in a spiral shape, ore pulp starts to form a spiral flowing trend in the feeding pipe, centrifugal force is generated, and preliminary layering is started, so that the problems that short-circuit flow is generated in the hydrocyclone body, and overflow and rough separation are caused are avoided, and the grading effect and efficiency are improved.

Description

Technical Field

[0001] The utility model provides a tailings dehydration pretreatment device, which relates to the technical field of tailings dehydration. Background Art

[0002] Tailings are the products of mineral processing that contain low levels of useful target components and cannot be used in production. Tailings slurry generally contains a large amount of water. Currently, incineration, landfill, and other methods are mostly used for slurry treatment. However, regardless of the method used, dewatering the tailings slurry is an extremely important step. Tailings dewatering is usually performed using a dewatering screen. Before the tailings are fed into the dewatering screen, the tailings slurry is pre-treated using a hydrocyclone to separate coarse and fine particles. The coarse particles are directly dewatered using the dewatering screen, while the fine particles are further treated in a deep cone thickener before being dewatered in the dewatering screen.

[0003] When using a hydrocyclone to pre-treat tailings, water is used as the separation medium. After the slurry enters the hydrocyclone, due to its proximity to the overflow port, when a short-circuit flow is formed, coarse particles are easily discharged directly from the overflow port and do not have time to settle downward, affecting the classification effect. In order to improve the classification efficiency, water replenishment is sometimes used. However, the existing cone water replenishment structure directly passes water into the cone through a circular pipe, which will disturb the already formed water flow and easily cause coarse particles to enter the water replenishment pipe, which does not significantly improve the classification efficiency. For this reason, we propose a tailings dewatering pretreatment device. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing tailings dewatering pretreatment device has low classification efficiency in separating coarse and fine particles in ore pulp.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a tailings dewatering pretreatment device, including a hydrocyclone body, the hydrocyclone body including a circular straight pipe and a conical pipe body fixedly connected to the bottom of the circular straight pipe, the circular straight pipe is connected to a feed pipe, the feed pipe is spirally arranged, one end of the feed pipe is tangent to and connected to the circular straight pipe, an overflow pipe is fixedly installed on the top of the circular straight pipe, a guide plate is fixed between the overflow pipe and the inner wall of the circular straight pipe, the guide plate is spirally arranged downward, a water supply ring pipe is fixed to the outer side of the conical pipe body, a water supply hole is opened on the side wall of the conical pipe body, and the water supply hole is opened on the inner side of the water supply ring pipe.

[0006] Preferably, three water supply holes are evenly arranged around the circumference of the tapered tube body, and a rubber plug is provided in the water supply hole, one side of the rubber plug is fixed to the edge of the water supply hole, and the other side can be resiliently overlapped on the edge of the water supply hole.

[0007] Preferably, the water supply hole passes through the side wall of the tapered tube body tangentially along the direction of water flow.

[0008] Preferably, the feed pipe and the guide plate are both provided with at least two spiral turns.

[0009] Preferably, the feed pipe and the guide plate are both made of steel plates.

[0010] Preferably, the top of the overflow pipe is connected to a drain pipe, the water supply ring pipe is connected to a water supply pipe, and the bottom end of the conical tube body is provided with a discharge port.

[0011] Beneficial effects of the utility model:

[0012] The feed pipe is set up to form a cyclone before the slurry enters the hydrocyclone body, and the slurry is initially stratified. The guide plate is set up to further enhance the cyclone effect, thereby avoiding short-circuit flow and overflow problems, thereby improving the classification effect and efficiency.

[0013] The water supply hole penetrates the side wall of the tapered tube tangentially along the direction of water flow. The added water can better merge into the existing water flow in the hydrocyclone body, disrupting the original water flow as little as possible, thereby not affecting the classification. Through the setting of the rubber plug, when the water supply is completed or the water pressure is reduced, one side of the rubber plug will rebound to block the water supply hole, thereby preventing particles from entering the water supply pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of a tailings dewatering pretreatment device.

[0015] Figure 2 This is a cross-sectional view of a tailings dewatering pretreatment device of the utility model.

[0016] Figure 3 This is a top view of the conical tube body of a tailings dewatering pretreatment device of the utility model.

[0017] Figure 4 The utility model is a schematic diagram of the rubber plugging structure of a tailings dewatering pretreatment device.

[0018] (1. Conical pipe body; 2. Water supply ring pipe; 3. Round straight pipe; 4. Feed pipe; 5. Drain pipe; 6. Water supply pipe; 7. Overflow pipe; 8. Guide plate; 9. Water supply hole; 10. Rubber plug) DETAILED DESCRIPTION

[0019] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0020] Reference Figures 1 to 4The utility model provides a tailings dewatering pretreatment device, including a hydrocyclone body, the hydrocyclone body including a circular straight pipe 3 and a conical pipe body 1 fixedly connected below the circular straight pipe 3, the circular straight pipe 3 is connected to a feed pipe 4, the feed pipe 4 is spirally arranged, and one end of the feed pipe 4 is tangent to and communicates with the circular straight pipe 3. Specifically, by setting the feed pipe 4 in a spiral shape, the slurry begins to form a spiral flow trend in the feed pipe 4, generates centrifugal force, and begins preliminary stratification, thereby avoiding short-circuit flow in the hydrocyclone body.

[0021] Further, if Figure 2 As shown, an overflow pipe 7 is fixedly mounted on the top of the circular straight tube 3. A guide plate 8 is fixedly connected between the overflow pipe 7 and the inner wall of the circular straight tube 3. The guide plate 8 is arranged in a spiral shape and extends downward. The feed pipe 4 and the guide plate 8 are each provided with at least two spiral turns. The feed pipe 4 and the guide plate 8 are both made of steel plates. Specifically, the installation of the spiral guide plate 8 enhances the slurry's swirling effect after entering the hydrocyclone body.

[0022] Further, if Figure 3 As shown, a water supply ring pipe 2 is fixed to the outside of the conical tube body 1, and the water supply ring pipe 2 is connected to the water supply pipe 6. A water supply hole 9 is opened on the side wall of the conical tube body 1. The water supply hole 9 is opened on the inner side of the water supply ring pipe 2. There are three water supply holes 9 evenly arranged around the circumference of the conical tube body 1. The water supply holes 9 pass through the side wall of the conical tube body 1 tangentially along the direction of water flow. Specifically, the water supply pipe 6 is connected to an external water source, and the water inlet direction is the same as that of the feed pipe 4. The water source passes through the water supply pipe 6 to supply the water supply ring pipe 2, flows in the water supply ring pipe 2, and then is replenished into the hydrocyclone body through the water supply hole 9. Since the water supply hole 9 passes through the side wall of the conical tube body 1 tangentially along the direction of water flow, the replenished water can better merge into the existing water flow in the hydrocyclone body, disrupting the original water flow as little as possible, thereby not affecting the classification.

[0023] Further, if Figure 3 、 Figure 4 As shown, a rubber plug 10 is provided in the water supply hole 9. One side of the rubber plug 10 is fixedly connected to the edge of the water supply hole 9, and the other side is resiliently overlapped with the edge of the water supply hole 9. Specifically, water in the water supply ring pipe 2 can dislodge one side of the rubber plug 10, allowing water to be smoothly replenished into the hydrocyclone body. When the water supply is completed or the water pressure decreases, one side of the rubber plug 10 will rebound to block the water supply hole 9, thereby preventing particulate matter from entering the water supply pipe 6.

[0024] Further, if Figure 1 As shown, the top of the overflow pipe 7 is connected to the drain pipe 5, and the bottom end of the conical tube body 1 is provided with a discharge port.

[0025] Working principle: The slurry enters the feed pipe 4 and begins to form a vortex. Under the action of centrifugal force, it is initially stratified. After entering the hydrocyclone body, the vortex effect is further enhanced under the action of the guide plate 8, causing large particles to move downward and be discharged through the bottom discharge port, while fine particles are discharged through the overflow pipe 7, completing the classification.

[0026] During the classification process, the water supply pipe 6 is connected to an external water source to supply water to the water supply ring pipe 2. The water in the water supply ring pipe 2 can flush open one side of the rubber plugging piece 10, allowing water to be smoothly replenished into the hydrocyclone body, thereby improving the classification efficiency. When the water supply is completed or the water pressure is reduced, one side of the rubber plugging piece 10 will rebound to block the water supply hole 9, thereby preventing particulate matter from entering the water supply pipe 6.

[0027] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A tailings dewatering pretreatment device, comprising a hydrocyclone body, wherein the hydrocyclone body comprises a circular straight tube and a tapered tube body fixedly connected below the circular straight tube, characterized in that: The circular straight tube is connected to a feed pipe, which is spirally arranged. One end of the feed pipe is tangent to and communicates with the circular straight tube. An overflow pipe is fixedly installed on the top of the circular straight tube. A guide plate is fixed between the overflow pipe and the inner wall of the circular straight tube. The guide plate is spirally arranged downward. A water supply ring tube is fixed to the outer side of the conical tube body. A water supply hole is opened on the side wall of the conical tube body. The water supply hole is opened on the inner side of the water supply ring tube.

2. A tailings dewatering pretreatment device according to claim 1, characterized in that: There are three water supply holes evenly arranged around the circumference of the tapered tube body, and a rubber plug is provided in the water supply hole. One side of the rubber plug is fixed to the edge of the water supply hole, and the other side can be resiliently overlapped on the edge of the water supply hole.

3. The tailings dewatering pretreatment device according to claim 1, characterized in that: The water supply hole passes through the side wall of the tapered tube body tangentially along the water flow direction.

4. The tailings dewatering pretreatment device according to claim 1, characterized in that: The feed pipe and the guide plate are both provided with at least two spiral turns.

5. The tailings dewatering pretreatment device according to claim 1, characterized in that: The feed pipe and the guide plate are both made of steel plates.

6. The tailings dewatering pretreatment device according to claim 1, characterized in that: The top of the overflow pipe is connected to a drain pipe, the water supply ring pipe is connected to a water supply pipe, and the bottom end of the conical pipe body is provided with a discharge port.

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