Nickel electrolysis catholyte impurity removal device

Abstract

The utility model belongs to the technical field of wet non-ferrous metallurgical equipment, and particularly discloses a nickel electrolysis catholyte impurity removal device which comprises a cylinder body, a seal head is arranged at the top of the cylinder body, a resin inlet is formed in the middle of the seal head, a liquid accumulation disc is arranged on the upper portion of the cylinder body, a plurality of evenly-distributed outlet bent pipes are arranged on the seal head, and the outlet bent pipes are connected with the resin inlet. One end of the outlet bent pipe is arranged inside the end socket, the other end of the outlet bent pipe is arranged inside the liquid accumulation disc, a cone bottom is arranged on the lower portion of the barrel, a resin outlet is formed in the bottom of the cone bottom, a water cap sieve plate distributor is arranged on the top of the cone bottom, a liquid inlet pipe is arranged above the cone bottom, one end of the liquid inlet pipe is arranged outside the barrel, and the other end of the liquid inlet pipe is arranged outside the barrel. The other end of the liquid inlet pipe is arranged in the cone bottom; according to the utility model, impurity elements such as lead exceeding the standard in the solution are removed by ion exchange, so that the lead content of the solution meets the requirement of producing high-quality electric nickel, and the resin can be continuously and stably filled and reused.

Description

Technical Field

[0001] This utility model belongs to the technical field of wet non-ferrous metallurgical equipment, specifically relating to a nickel electrolytic cathode liquid impurity removal device. Background Technology

[0002] In the nickel-cobalt hydrometallurgical industry, the adsorption of anions and cations is an effective measure to remove impurity elements from the solution, improve the purity of the solution, and produce high-quality electrolytic nickel. Its application is very widespread. In the process of ion exchange for impurity removal, fixed exchange columns are more commonly used. However, filling fixed exchange columns with resin is difficult, requires manual operation, is cumbersome, and has lower performance.

[0003] Therefore, it is necessary to design a nickel electrolytic cathode liquid impurity removal device that uses ion exchange to remove excessive lead and other impurity elements from the solution, enabling continuous and stable resin filling and reuse. Utility Model Content

[0004] In view of the problems of the prior art, the purpose of this utility model is to provide a nickel electrolysis cathode liquid impurity removal device to solve the problems of difficult filling of fixed exchange columns, cumbersome operation and low performance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A nickel electrolytic cathode liquid impurity removal device includes a cylindrical body, a head at the top of the cylindrical body, a resin inlet in the middle of the head, a liquid collection tray at the top of the cylindrical body, and a plurality of evenly distributed outlet bends on the head, one end of each outlet bend being inside the head and the other end being inside the liquid collection tray. A conical bottom is provided at the bottom of the cylindrical body, a resin outlet at the bottom of the conical bottom, a water cap screen plate distributor at the top of the conical bottom, and an inlet pipe above the conical bottom, one end of which is outside the cylindrical body and the other end inside the conical bottom.

[0007] More preferably, the liquid accumulation plate is an annular flow channel.

[0008] More preferably, a filter screen is installed at the outlet elbow flange.

[0009] More preferably, an observation mirror is provided above the cylinder at the same height as the liquid collection tray, and the observation mirror is made of plexiglass.

[0010] More preferably, a spare opening is provided on the side of the cone bottom.

[0011] More preferably, an inspection hole is provided at the bottom of the cylinder.

[0012] More preferably, the end cap and the cylinder are both made of wear-resistant and corrosion-resistant F4 material.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This invention utilizes ion exchange to remove excessive lead and other impurities from the solution, ensuring that the lead content meets the requirements for producing high-quality electrolytic nickel. The device operates in a continuous countercurrent manner. The solution to be purified enters the cone bottom through the feed pipe at the bottom of the device, is dispersed by the water cap sieve plate distributor, and then enters the cylinder filled with anions and cations for ion exchange to remove impurities and purify the solution. The exchanged solution flows through the upper end cap into the liquid collection pan and into the cathode liquid storage tank, becoming the solution for producing high-quality electrolytic nickel. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] The meanings of the symbols in the attached diagram are as follows: 1. Cylinder; 2. End cap; 3. Resin inlet; 4. Outlet bend; 5. Filter screen; 6. Observation mirror; 7. Liquid collection tray; 8. Liquid inlet pipe; 9. Conical bottom; 10. Inspection hole; 11. Resin outlet; 12. Spare port; 13. Water cap screen plate distributor. Detailed Implementation

[0018] 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. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, in the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0020] like Figure 1 , 2As shown, a nickel electrolytic cathode liquid impurity removal device includes a cylindrical body 1, with a head 2 at the top of the cylindrical body 1. Both the head 2 and the cylindrical body 1 are lined with wear-resistant and corrosion-resistant material F4. A resin inlet 3 is located in the middle of the head 2. A liquid collection tray 7 is located on the upper part of the cylindrical body 1. The liquid collection tray 7 is an annular flow channel for liquid collection. An observation mirror 6, made of plexiglass, is located at the same height as the liquid collection tray 7 above the cylindrical body 1, allowing observation of the resin quantity and ion exchange operation. Several evenly distributed outlet bends 4 are provided on the head 2. A filter screen 5 is installed at the flange of the outlet bend 4 to prevent resin from flowing out. One end of the outlet bend 4 is located at the head 2. Inside, the other end of the outlet bend 4 is inside the liquid collection pan 7. The lower part of the cylinder 1 is provided with a conical bottom 9. The bottom of the conical bottom 9 is provided with a resin outlet 11. The side of the conical bottom 9 is provided with a spare port 12. The top of the conical bottom 9 is provided with a water cap screen plate distributor 13. The water cap screen plate distributor 13 can divert the upward liquid and screen the downward resin through the liquid and broken resin. The top of the conical bottom 9 is provided with an inlet pipe 8. The inlet pipe 8 can be used to pass in the liquid to be removed, regenerator, and washing liquid. One end of the inlet pipe 8 is outside the cylinder 1, and the other end of the inlet pipe 8 is inside the conical bottom 9. The bottom of the cylinder 1 is provided with an inspection hole 10 for easy maintenance by workers.

[0021] In practical use, the pre-treated resin is blown into the cylinder 1 through the resin inlet 3 using compressed air, ensuring a compacted state. Before ion exchange, the solution contains 2 mg / L of lead. It is pumped to the inlet pipe 8 and slowly and evenly enters the cone bottom 9 via the water cap sieve plate distributor 13. The solution overcomes the resistance of the resin from bottom to top, gradually reducing the flow rate, thus ensuring sufficient contact and adsorption / exchange between the resin and ions in the solution. This results in a lead content of less than 0.02 mg / L, meeting the requirements for producing high-quality electrolytic nickel. The adsorbed solution is then sent through the outlet bend 4 to the collection pan 7 for merging and exiting from the outlet of the collection pan 7. Resin regeneration and washing are both controlled by a PLC. The inlet pipe 8 is equipped with a flow meter and an automatic regulating valve to stably control the inlet flow rate. Both the regenerator and washing liquid enter through the inlet pipe 8, flowing counter-currently and exiting from the outlet bend 4. Aged and broken resin is discharged from the resin outlet 11 or the spare port 12.

[0022] This device can achieve continuous and stable liquid feeding, and the water cap sieve plate distributor has a significant diversion effect. Due to the deep filling of the resin bed, the solution flow rate is slow and the flow rate is uniform, resulting in good ion adsorption filtration and high purity of the catholyte. It adopts countercurrent regeneration, which has high regeneration degree and low regenerant consumption.

[0023] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for removing impurities from nickel electrolytic cathode liquid, comprising a cylindrical body, characterized in that: The top of the cylinder (1) is provided with a head (2), the middle of the head (2) is provided with a resin inlet (3), the upper part of the cylinder (1) is provided with a liquid collection plate (7), the head (2) is provided with several evenly distributed outlet bends (4), one end of the outlet bend (4) is inside the head (2), the other end of the outlet bend (4) is inside the liquid collection plate (7), the lower part of the cylinder (1) is provided with a cone bottom (9), the bottom of the cone bottom (9) is provided with a resin outlet (11), the top of the cone bottom (9) is provided with a water cap screen plate distributor (13), the top of the cone bottom (9) is provided with an inlet pipe (8), one end of the inlet pipe (8) is outside the cylinder (1), and the other end of the inlet pipe (8) is inside the cone bottom (9).

2. The nickel electrolytic cathode liquid impurity removal device according to claim 1, characterized in that: The liquid accumulation plate (7) is an annular flow channel.

3. The nickel electrolytic cathode liquid impurity removal device according to claim 1, characterized in that: A filter screen (5) is installed at the flange of the outlet bend (4).

4. The nickel electrolytic cathode liquid impurity removal device according to claim 1, characterized in that: An observation mirror (6) is provided above the cylinder (1) at the same height as the liquid collection tray (7), and the observation mirror (6) is made of plexiglass.

5. The nickel electrolytic cathode liquid impurity removal device according to claim 1, characterized in that: A spare port (12) is provided on the side of the cone bottom (9).

6. The nickel electrolytic cathode liquid impurity removal device according to claim 1, characterized in that: The cylinder (1) is provided with an inspection hole (10) at the bottom.

7. The nickel electrolytic cathode liquid impurity removal device according to claim 1, characterized in that: The end cap (2) and the cylinder (1) are both made of wear-resistant and corrosion-resistant material F4.

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