An automatic deslagging filter device for ore slurry

Abstract

The utility model discloses an automatic deslagging ore pulp filtering device, through letting raw material leaching after from import nipple enters the inner cylinder through first filter hole and enters the outer cylinder, after that, discharges from export nipple, in the process, the sundries are filtered in the inner cylinder, and the follow -up is driven by the driving device and is driven deslagging helical blade rotation after the openable closing device is opened, the sundries that filter down are discharged from the deslagging port, and in the openable closing device closing state when running, the sundries that filter down are sent to the place close to the deslagging port through the driving device and drive deslagging helical blade rotation, so as to be discharged subsequently, and the setting of second filter hole is to guarantee the permeability of leaching solution.

Description

Technical Field

[0001] This utility model belongs to the field of leaching process in hydrometallurgy, and particularly relates to an automatic slag discharge slurry filtration device. Background Technology

[0002] Nickel sulfate crystals are mainly used in ternary lithium-ion battery cathode materials, electroplating, and other industrial fields. Currently, the industrial production of nickel sulfate crystals mainly follows three routes: 1) sulfide ore to high-grade nickel matte process; 2) nickel powder dissolution process; and 3) wet process intermediate product route. The wet process intermediate product route has become the mainstream process for industrial nickel sulfate production due to its wide availability of raw materials and lower processing costs. The wet process intermediate product route involves leaching, purification and separation, and crystallization. In the leaching process, due to the mining, packaging, transportation, and unpacking of nickel-cobalt hydroxide mineral raw materials, insoluble or poorly soluble substances such as stones and packaging plastics are easily mixed in. This causes these insoluble or poorly soluble impurities to enter the conveying pumps and pipelines, resulting in pump wear, material blockage, impeller seizure, and pipeline blockage. This leads to frequent interruptions and shutdowns in the leaching process, high equipment failure rate, and low production efficiency. Therefore, solving the problems of pump and pipeline blockage and failure in the leaching process is crucial to ensuring production continuity and reducing spare parts costs. Utility Model Content

[0003] (1) Technical problem to be solved: In view of the problems of frequent failures and blockages of the leaching process pumps and pipelines, low conveying efficiency, and high spare parts costs in the existing technology, this utility model provides a slurry filtration device that can realize automatic slag discharge. It can significantly reduce the failure frequency of the pumps and pipelines, effectively ensure the continuity of production, and reduce the cost of spare parts for the pumps.

[0004] (2) The technical solution adopted by this utility model is as follows: An automatic slag discharge slurry filtration device includes an inner cylinder and an outer cylinder fitted onto the inner cylinder. An inlet section is provided on the side wall of the inner cylinder. The outer cylinder encloses a fan-shaped area in the circumferential direction of the inner cylinder. First filter holes are evenly distributed on the side wall of the inner cylinder within the area enclosed by the outer cylinder. One end of the inner cylinder is a slag discharge port, and the other end is closed. A drive shaft is installed inside the inner cylinder, with one end penetrating through and rotatably connected to the closed end of the inner cylinder. Slag discharge spiral blades are installed on the drive shaft inside the inner cylinder, with the middle of the spiral blades connected to the drive shaft. The drive shaft is connected to a drive device. An outlet section is provided on the side wall of the outer cylinder, and the slag discharge port is connected to an openable / closed device.

[0005] A further technical solution is that the slag discharge spiral blades have a screen-like structure with evenly distributed second filter holes.

[0006] A further technical solution is that a slag discharge flange is provided at the slag discharge port, and the openable and closing device is a butterfly valve, with the slag discharge flange connected to the butterfly valve.

[0007] A further technical solution is that the inner cylinder and outer cylinder are made of 304 stainless steel lined with PP (polypropylene), and the spiral blades of the slag discharge screen are made of Monel alloy.

[0008] A further technical solution is that the driving device includes a motor, a frame is provided at the closed end of the outer cylinder, the motor is fixed on the frame, and the output shaft of the motor is fixed to the transmission shaft by a coupling.

[0009] A further technical solution is that the width of the first filter pore is ≥8mm.

[0010] A further technical solution is that the width of the second filter pore is ≥8mm.

[0011] (3) Due to the adoption of the above technical solution, the beneficial effects of this utility model are: This invention allows the raw material, after leaching, to enter the inner cylinder through the inlet section, pass through the first filter hole, and then enter the outer cylinder, before exiting through the outlet section. During this process, impurities are filtered inside the inner cylinder. Subsequently, after the openable sealing device is opened, the drive device rotates the slag discharge spiral blades to discharge the filtered impurities from the slag discharge port. Moreover, when the openable sealing device is closed, the drive device can rotate the slag discharge spiral blades to send the impurities filtered near the inlet section to the slag discharge port for subsequent discharge. The second filter hole is designed to ensure the permeability of the leachate.

[0012] This invention features an ingeniously designed device that adapts well to the leaching of mineral raw materials containing a large amount of impurities such as stones and plastics. It requires no additional auxiliary control systems, making it easy to operate. By filtering out stones and plastics, it prevents equipment wear and clogging, ensures continuous conveying, reduces equipment failure rates, and significantly saves on spare parts costs. The design of the slag discharge spiral blades enables automatic slag discharge, reducing the workload of personnel. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an automatic slag discharge and slurry filtration device. Figure 2 This is a side view of an automatic slag discharge and slurry filtration device. Figure 3 This is a three-dimensional schematic diagram of an automatic slag discharge and slurry filtration device. Figure 4 This is a cross-sectional view of an automatic slag discharge and slurry filtration device. Figure 5 This is a schematic diagram of the slag discharge spiral blade. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0015] like Figures 1-5 As shown. An automatic slag discharge slurry filtration device includes an inner cylinder 2 and an outer cylinder 6 fitted onto the inner cylinder 2. An inlet section 1 is provided on the side wall of the inner cylinder 2. The outer cylinder 6 encloses a fan-shaped area in the circumferential direction of the inner cylinder 2. First filter holes 3 are evenly distributed on the side wall of the inner cylinder 2 within the area enclosed by the outer cylinder 6. One end of the inner cylinder 2 is a slag discharge port, and the other end is closed. A drive shaft is installed inside the inner cylinder 2, with one end passing through and rotatably connected to the closed end of the inner cylinder 2. Slag discharge spiral blades 4 are installed on the drive shaft inside the inner cylinder 2, with the middle of the spiral blades 4 connected to the drive shaft. The drive shaft is connected to a drive device. An outlet section 7 is provided on the side wall of the outer cylinder 6, and the slag discharge port is connected to an openable sealing device. The spiral blades 4 have a screen-like structure with evenly distributed second filter holes 10. A slag discharge flange 5 is provided at the slag discharge port, and the openable sealing device is a butterfly valve, which is connected to the butterfly valve 11. The driving device includes a motor 9. A frame is installed at the closed end of the outer cylinder 6, and the motor 9 is fixed on the frame. The output shaft of the motor 9 is fixed to the transmission shaft via a coupling 8. The width of the first filter hole 3 is ≥8mm.

[0016] The width of the second filter hole 10 is ≥8mm. One end of the drive shaft passes through the closed end of the inner cylinder 2 and is rotatably connected to it. The rotatable connection method adopts a traditional bearing and skeleton seal with sealing function.

[0017] Working process: After leaching, the nickel-cobalt hydroxide mineral raw material enters the inner cylinder 2 through the inlet section 1. The leachate is filtered through filter holes and slag discharge spiral blades 4 before entering the outer cylinder 6. Insoluble materials such as stones and plastics are filtered into the inner cylinder 2. The leachate then enters the transfer pump through the outlet section 7 and is pumped to the next process. Blocky insoluble materials intercepted inside the inner cylinder 2 are conveyed and discharged through the slag discharge screen spiral towards the slag discharge port, achieving automatic slag discharge. Since the slag discharge spiral blades 4 are located inside the inner cylinder 2, a second filter hole 10 is provided on the slag discharge spiral blades 4 to ensure the passage of leachate. The slag discharge flange 5 needs to be connected to a butterfly valve 11, which is closed when conveying liquid and opened when discharging slag. At the same time, the filter body (inlet section 1, inner cylinder 2, slag discharge flange 5, outer cylinder 6, outlet section 7) is made of 304 stainless steel lined with PP (polypropylene). The above materials have excellent corrosion resistance and high temperature resistance. The slag discharge spiral blade 4 is made of Monel alloy. This material has high corrosion resistance and high wear resistance, which can effectively prevent chloride ion, sulfate ion, and fluoride ion corrosion and blade wear during the leaching process.

[0018] The above are merely preferred embodiments of this utility model.

Claims

1. An automatic slag discharge slurry filtration device, characterized in that, The inner cylinder (2) includes an inner cylinder (2) and an outer cylinder (6) fitted onto the inner cylinder (2). An inlet short section (1) is provided on the side wall of the inner cylinder (2). The outer cylinder (6) encloses a fan-shaped area in the circumferential direction of the inner cylinder (2). First filter holes (3) are evenly distributed on the side wall of the inner cylinder (2) in the area enclosed by the outer cylinder (6). One end of the inner cylinder (2) is a slag discharge port, and the other end is closed. A drive shaft is provided inside the inner cylinder (2). One end of the drive shaft passes through the closed end of the inner cylinder (2) and is rotatably connected to it. Slag discharge spiral blades (4) are provided on the drive shaft inside the inner cylinder (2). The middle part of the slag discharge spiral blades (4) is connected to the drive shaft. The drive shaft is connected to a drive device. An outlet short section (7) is provided on the side wall of the outer cylinder (6). The slag discharge port is connected to an openable and closed device.

2. The automatic slag discharge slurry filtering device according to claim 1, characterized in that, The slag discharge spiral blade (4) has a screen-like structure with second filter holes (10) evenly distributed on it.

3. The automatic slag discharge slurry filtering device according to claim 1, characterized in that, A slag discharge flange (5) is provided at the slag discharge port, and the opening and closing device is a butterfly valve. The slag discharge flange (5) is connected to the butterfly valve.

4. The automatic slag discharge slurry filtering device according to claim 1, characterized in that, The inner cylinder (2) and outer cylinder (6) are made of (304) stainless steel with PP lining, and the spiral blades of the slag discharge screen are made of Monel alloy.

5. An automatic slag discharge slurry filtration device according to claim 1, characterized in that, The drive device includes a motor (9), and a frame is provided at the closed end of the outer cylinder (6). The motor (9) is fixed on the frame, and the output shaft of the motor (9) is fixed to the transmission shaft by a coupling (8).

6. The automatic slag discharge slurry filtering device according to claim 1, characterized in that, The width of the first filter hole (3) is ≥ (8) mm.

7. An automatic slag discharge slurry filtration device according to claim 2, characterized in that, The width of the second filter hole (10) is ≥ (8) mm.

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