A chute type pre-concentration and screening device for concentrate

Abstract

The utility model belongs to the field of ore separation, relates to a chute formula mill front pre -separation concentrate ore screening device, including receiving hopper, discharge chute and discharge gate, the side of receiving hopper is set up feed inlet, the top of receiving hopper is open, the lower part of receiving hopper one side is set up discharge gate, the top of receiving hopper is covered with feed inlet cover plate, one end of discharge chute is communicated with discharge gate, and the other end is set up discharge gate at the bottom surface, the both sides and bottom surface of discharge chute are paved with ceramic sheet, discharge chute is set up obliquely, the top of discharge chute is covered with cover plate. The device is simple in structure, and the component is wear -resisting and easy to replace, and simultaneously has conveying function and ore separation function.

Description

Technical Field

[0001] This utility model belongs to the field of mineral processing and relates to a sluice-type pre-grinding concentrate screening device. Background Technology

[0002] Pre-grinding is a common type of mineral processing equipment that can remove some waste rock before it enters the mill, thereby improving the grade of the feed. The concentrate after waste removal in pre-grinding usually needs to be screened by a concentrate screen to control the concentration and particle size of the feed to the ball mill.

[0003] Typically, the feeding method for concentrate screens is as follows: the pre-selected concentrate from the mill first enters the buffer tank, then flows through a pipeline into the distribution tank, and finally feeds into the concentrate screen. However, this method has the following problems:

[0004] 1. Pipes need to be made of wear-resistant materials and require fittings such as elbows and flanges, which is relatively complex, makes maintenance relatively troublesome, and is more expensive; 2. When a pipe is damaged, the entire section needs to be replaced, and the maintenance cost is high; 3. Due to the large particle size of the slurry, the pipe is relatively easy to get clogged, and it is difficult to clear the blockage. Summary of the Invention

[0005] This application provides a chute-type pre-grinding concentrate screening device. The device has a simple structure, wear-resistant and easily replaceable components, and also has both conveying and sorting functions.

[0006] To achieve the above technical objectives, the technical solution adopted in this application is a chute-type pre-grinding concentrate screening device, including a receiving hopper, a discharge chute, and a discharge port.

[0007] The receiving hopper has a feed inlet on its side; the top of the receiving hopper is open; a discharge outlet is located at the bottom of one side of the receiving hopper; and the top of the receiving hopper is covered with a feed inlet cover.

[0008] One end of the discharge trough is connected to the discharge port, and the other end is provided with the discharge port on the bottom surface; ceramic sheets are laid on both sides and the bottom surface of the discharge trough; the discharge trough is inclined; and the top of the discharge trough is covered with a cover plate.

[0009] As an improved technical solution of this application, the bottom surface of the receiving hopper is an inclined surface.

[0010] As an improved technical solution of this application, a partition is provided in the receiving hopper near the discharge port, and the partition and the discharge port have a distance of not less than 10cm.

[0011] As an improved technical solution of this application, the height of the partition is 8-12cm.

[0012] As an improved technical solution of this application, the discharge trough has an angle of 8-10° with respect to the horizontal plane.

[0013] As an improved technical solution of this application, the receiving hopper and the discharge trough are an integral structure. Beneficial effects

[0014] 1. The device structure of this application is simple and integrated, with low cost, and the device has both conveying and ore-separating functions.

[0015] 2. The ceramic discs in the discharge chute can be partially repaired after wear, without replacing the whole disc, thus avoiding waste of resources. When repairing or causing blockage, the cover of the discharge chute can be lifted, making repair convenient and cost-effective.

[0016] 3. The baffle plate in the receiving hopper can form ore accumulation at the bottom of the hopper for ore grinding, which greatly increases the service life of the device. Attached Figure Description

[0017] Figure 1 A front view of a chute-type pre-grinding concentrate screening device is shown.

[0018] Figure 2 A top view of a chute-type pre-grinding concentrate screening device is shown.

[0019] In the diagram: 1. Feed inlet cover; 2. Receiving hopper; 3. Feed inlet; 4. Baffle plate; 5. Discharge outlet; 6. Discharge trough; 7. Cover plate; 8. Discharge outlet. Detailed Implementation

[0020] like Figure 1-2 As shown, a chute-type pre-grinding concentrate screening device is provided with an inlet 3 to receive the pre-grinding concentrate slurry, which is then conveyed to the outlet 8 through a discharge chute 6. The slurry is then fed into the concentrate screen. A baffle 4 is provided to prevent the slurry from impacting the bottom plate and causing wear. A cover plate is provided to prevent ore splashing and facilitate maintenance.

[0021] A chute-type pre-grinding concentrate screening device includes a receiving hopper 2, a discharge chute 6, and a discharge port 8.

[0022] The receiving hopper 2 has a feed inlet 3 on its side; the top of the receiving hopper 2 is open; the lower part of one side of the receiving hopper 2 has a discharge outlet 5; the top (open) of the receiving hopper 2 is covered with a feed inlet cover plate 1.

[0023] One end of the discharge trough 6 is connected to the discharge port 5, and the other end is provided with the discharge port 8 on the bottom surface; ceramic sheets are laid on both sides and the bottom surface of the discharge trough 6; the discharge trough 6 is inclined; the top of the discharge trough 6 is covered with a cover plate 7 (discharge trough cover plate).

[0024] To allow the slurry to flow by gravity to the discharge port 8, the bottom surface of the receiving hopper 2 is inclined.

[0025] To extend the service life of the receiving hopper 2, a baffle 4 is provided in the receiving hopper 2 near the discharge port 8. The baffle 4 has a distance of not less than 10cm from the discharge port 8, so that ore can accumulate in the receiving hopper 2, avoiding erosion and wear of the bottom surface of the receiving hopper 2 by the ore slurry during the feeding process. Preferably, the height of the baffle 4 is 8-12cm.

[0026] To facilitate material discharge, the discharge trough 6 has an angle of 8-10° relative to the horizontal plane. The periphery of the discharge port 8 has an angle of 8-12° relative to the side of the discharge trough 6, that is, the periphery of the discharge port is inclined downward, and at different angles to the side of the discharge trough 6 and the periphery of the discharge port 8. Example

[0027] A chute-type pre-grinding concentrate screening device includes a receiving hopper 2, a discharge chute 6, and a discharge port 8.

[0028] The receiving hopper 2 is composed of side plates, a bottom plate, partition plates 4, and an inlet cover plate 1; that is, multiple side plates form a frame structure, the bottom plate serves as the base of the frame structure, and an inlet 3 is opened on the side of the frame structure. The top surface of the frame structure is open to facilitate observation of the feeding situation of the receiving hopper 2. The inlet 3 is connected to an external feeding pipe, and the opening at the top is covered by the inlet cover plate 1. To facilitate discharge, the bottom plate is inclined. At the same time, a discharge port 5 is opened at the bottom of one side plate of the receiving hopper 2, and this side plate is located on the lowest side of the bottom plate to ensure smooth discharge from the discharge port 5. A 10cm high partition plate 4 is welded above the bottom plate of the receiving hopper 2 to allow ore to accumulate locally below the inlet 3 for ore grinding and to prevent the ore slurry from falling from the inlet 3 and impacting the bottom plate.

[0029] The discharge chute 6 is composed of side plates and a bottom plate. The discharge chute 6 has a 9° angle relative to the horizontal line, which is greater than the angle between the bottom plate of the receiving hopper 2 and the horizontal line to ensure smooth material discharge. To facilitate replacement and maintenance of the discharge chute 6, wear-resistant ceramic sheets are laid inside the side plates and on the surface of the bottom plate to protect them from wear caused by slurry erosion. A cover plate 7 (discharge chute cover) is installed above the discharge chute 6 to prevent ore splashing and allows for easy replacement of the ceramic sheets during maintenance.

[0030] The bottom plate of the discharge trough 6 has a discharge port 8 at its lowest position. The bottom plate around the discharge port 8 is inclined downward relative to the side plate of the discharge trough 6, that is, the periphery of the discharge port 8 has an angle of 8-12° relative to the side of the discharge trough 6.

[0031] Work process:

[0032] Feed is fed into the inlet 3 of the receiving hopper 2. Some of the slurry is blocked at the bottom of the receiving hopper 2 by the baffle 4 to settle and form ore. After that, the slurry overflows the baffle 4 and flows from the discharge port 5 of the receiving hopper 2 to the discharge trough 6, and then flows from the discharge port 8 at the end of the discharge trough 6 to the next stage.

[0033] Among them, after the discharge trough 6 is worn and damaged, the ceramic plates in the discharge trough 6 can be replaced.

[0034] Meanwhile, during operation, the receiving hopper 2 and the discharge chute 6 are covered by the inlet cover plate 1 and the upper cover plate 7 of the discharge chute 6, respectively, which effectively prevents the slurry from splashing.

Claims

1. A chute-type pre-grinding concentrate screening device, characterized in that, Includes receiving hopper, discharge chute and discharge port; The receiving hopper has a feed inlet on its side; the top of the receiving hopper is open; a discharge outlet is provided at the bottom of one side of the receiving hopper; and the top of the receiving hopper is covered with a feed inlet cover plate. One end of the discharge trough is connected to the discharge port, and the other end is provided with the discharge port on the bottom surface; ceramic sheets are laid on both sides and the bottom surface of the discharge trough; the discharge trough is inclined; and the top of the discharge trough is covered with a cover plate.

2. The chute-type pre-grinding concentrate screening device according to claim 1, characterized in that, The bottom surface of the receiving hopper is an inclined plane.

3. The chute-type pre-grinding concentrate screening device according to claim 1, characterized in that, A partition is provided in the receiving hopper near the discharge port, and the partition is at a distance of not less than 10cm from the discharge port.

4. A chute-type pre-grinding concentrate screening device according to claim 3, characterized in that, The height of the partition is 8-12cm.

5. A chute-type pre-grinding concentrate screening device according to claim 1, characterized in that, The discharge trough has an angle of 8-10° with respect to the horizontal plane.

6. A chute-type pre-grinding concentrate screening device according to claim 1, characterized in that, The receiving hopper and the discharge trough are an integral structure.

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