Device for filtering nickel hydroxide slurrying liquid

Abstract

The utility model discloses a device for filtering nickel hydroxide slurrying liquid. The device comprises a filtrate storage tank, a secondary filtering grating and a slurrying liquid filtering pipe, the slurrying liquid filtering pipe is arranged at the upper position of one side in the filtrate storage tank, the secondary filtering grating is obliquely arranged in the filtrate storage tank, the high side of the secondary filtering grating is arranged below the slurrying liquid filtering pipe, the low side of the secondary filtering grating extends to the bottom of the filtrate storage tank, and two filtrate outlets are formed in the side wall of the filtrate storage tank below the high side of the secondary filtering grating; the slurrying liquid filtering pipe extends towards the two sides to form slag discharging openings, four liquid inlets are formed in the top of the slurrying liquid filtering pipe, and two rows of filtering holes are formed in the side, facing the high position of the secondary filtering grating, of the bottom of the slurrying liquid filtering pipe. According to the nickel hydroxide slurry filtering device, a two-stage filtering structure is arranged, nickel hydroxide slurry containing dregs is fully filtered, it is guaranteed that follow-up pipelines and a conveying pump are not blocked, and the production efficiency is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of nickel hydroxide slurry conveying technology, specifically relating to a device for filtering nickel hydroxide slurry. Background Technology

[0002] Nickel hydroxide, as one of the raw materials for producing nickel sulfate, faces challenges during the leaching process due to uneven slurry formation, insufficient dissolution of nickel hydroxide particles, or impurities that can clog pumps and pipelines, making the transport of the nickel hydroxide slurry difficult. Therefore, designing a device to filter impurities from the nickel hydroxide slurry and thus reduce the difficulty of transporting it is essential. Utility Model Content

[0003] The technical problem to be solved by this application is to provide an apparatus for filtering nickel hydroxide slurry.

[0004] To address the aforementioned problems, this application provides an apparatus for filtering nickel hydroxide slurry, characterized in that it comprises: a filtrate storage tank, a secondary filtration grid, and a slurry filter pipe; the slurry filter pipe is located inside the filtrate storage tank on one side near the upper part; the secondary filtration grid is inclinedly arranged inside the filtrate storage tank, with its higher side located below the slurry filter pipe and its lower side extending towards the bottom of the filtrate storage tank; two filtrate outlets are provided on the side wall of the filtrate storage tank below the higher side of the secondary filtration grid; the slurry filter pipe extends to both sides with slag discharge ports; four liquid inlets are provided at the top of the slurry filter pipe; and two rows of filter holes are opened at the bottom of the slurry filter pipe facing the higher part of the secondary filtration grid.

[0005] Furthermore, the filtrate outlet, slag discharge port, and liquid outlet are all connected to mounting flanges.

[0006] Furthermore, the secondary filter grid is made of fiberglass, with 38×38mm square holes and a spacing of 10mm between adjacent square holes, for secondary filtration of nickel hydroxide slurry.

[0007] Furthermore, the slurry filter tube is a PPH tube, and the four inlets at the top are connected to four nickel hydroxide leaching kettles.

[0008] Furthermore, the filter hole diameter is 50mm, and the interval between two adjacent filter holes is 60mm.

[0009] This application has the following advantages compared with the prior art:

[0010] This device is equipped with a two-stage filtration structure. The first stage is a slurry filter pipe, whose filter holes can block most of the unslurried particulate matter or impurities. The second stage is a lower filter grid, which can further filter the residual particulate matter in the slurry and prevent blockage of the delivery pump and pipeline. The two-stage filtration structure is reasonable and tightly fitted, ensuring the conveying efficiency of nickel hydroxide material. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this application;

[0012] Figure 2 This is a cross-sectional structural diagram of this application.

[0013] In the diagram: 1-filtrate storage tank, 2-secondary filter grid, 3-slurry filter pipe, 4-filtrate outlet, 5-slag discharge port, 6-liquid inlet, 7-filter hole. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to help understand the content of the present invention.

[0015] refer to Figure 1-2 This application provides an apparatus for filtering nickel hydroxide slurry, comprising: a filtrate storage tank 1, a secondary filter grid 2, and a slurry filter pipe 3; the slurry filter pipe 3 is located inside the filtrate storage tank 1 at an upper position on one side, the secondary filter grid 2 is inclinedly arranged inside the filtrate storage tank 1, with its higher side located below the slurry filter pipe 3 and its lower side extending to the bottom of the filtrate storage tank 1, and two filtrate outlets 4 are provided on the side wall of the filtrate storage tank 1 below the higher side of the secondary filter grid 2, the slurry filter pipe 3 has slag discharge ports 5 extending to both sides, the top of the slurry filter pipe 3 has four liquid inlets 6, and the bottom of the slurry filter pipe 4 has two rows of filter holes 7 on the side facing the higher part of the secondary filter grid 2. The filter holes 7 are not located at the very bottom of the slurry filter pipe 3 to facilitate the discharge of slag after sedimentation.

[0016] In application, the leaching tank is directly connected to the inlet 6. The nickel hydroxide slurry enters the slurry filter tube 3. Large particles that are not fully slurried (raw materials that are not fully slurried) remain in the slurry filter tube 3. The filtered slurry flows down and is filtered again by the secondary filter grid 2. The slurry after two filtrations meets the requirements for safe transportation.

[0017] The two slag outlets 5 are connected to the original leaching tank. Part of the slurry, carrying the filter residue (raw material that has not been fully slurried) accumulated in the slurry filter tube 3, is returned to the leaching tank for further stirring and slurrying.

[0018] Field experiments have verified that the accumulation rate of particulate matter on the lower side of the secondary filter screen 2 is relatively slow, and after a period of production, it can be cleaned in one go.

[0019] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the structure and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A device for filtering a nickel hydroxide slurry solution, characterized by, Include: The filtrate tank (1), secondary filter grid (2) and pulp liquid filter tube (3); the pulp liquid filter tube (3) is arranged at the upper position of one side inside the filtrate tank (1), the secondary filter grid (2) is arranged in the filtrate tank (1) and is inclined, the high side is arranged below the pulp liquid filter tube (3), and the low side extends to the bottom of the filtrate tank (1), the sidewall of the filtrate tank (1) below the high side of the secondary filter grid (2) is provided with a filtrate outlet (4), the pulp liquid filter tube (3) extends to both sides and is provided with a residue discharge port (5), the pulp liquid filter tube (3) is provided with a liquid inlet (6) at the top, and the bottom of the pulp liquid filter tube (3) is provided with two rows of filter holes (7) towards the high side of the secondary filter grid.

2. The device for filtering the nickel hydroxide slurry solution according to claim 1, characterized in that, The filtrate outlet (4), residue discharge port (5) and liquid inlet (6) are all connected with mounting flanges.

3. The device for filtering the nickel hydroxide slurry solution according to claim 1, wherein, The secondary filter grid (2) is made of glass fiber reinforced plastic, and the square holes with a size of 38*38mm are arranged on the secondary filter grid (2), and the distance between adjacent square holes is 10mm, which is used for the secondary filtration of nickel hydroxide pulp liquid.

4. The device for filtering the nickel hydroxide slurry solution according to claim 1, wherein, The pulp liquid filter tube (3) is a PPH tube, and the liquid inlet (6) at the top is used to connect four nickel hydroxide leaching kettles.

5. The device for filtering nickel hydroxide slurry solution according to claim 1, characterized in that, The filter holes (7) have a diameter of 50mm, and the distance between adjacent two filter holes is 60mm.

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