Electrolytic cell liquid supply device for electrowinning nickel production

Abstract

The utility model discloses a kind of for electrowinning nickel production in electrolytic cell liquid supply device, relate to the pipeline and assembly of nickel electrowinning field to the electrolytic cell inside supply nickel sulfate solution.In electrolytic cell liquid supply pipe (2) additional external thread tower joint (3) and transparent liquid inlet hose (4), transparent liquid inlet hose one end is connected on liquid supply pipe through external thread tower joint, another end is immersed into electrolytic cell cathode diaphragm bag liquid level below.The utility model effectively solves the problem of solution splashing, steam volatilization, acid mist, cathode and anode conductive rod crystallization, etc. caused by traditional method through the small hole on liquid supply pipe directly spraying solution into electrolytic cell cathode diaphragm bag, greatly reduces tank surface cleaning operation, reduces the probability of conductive rod being corroded, prolongs service life, stabilizes the quality of electro-nickel product.

Description

Technical Field

[0001] This utility model relates to the field of hydrometallurgical nickel electrowinning, and in particular to an electrolyte supply device for nickel electrowinning production. Background Technology

[0002] Electrowinning is a common method for producing pure metals such as nickel, cobalt, copper, and zinc. It typically involves supplying an electrolyte solution to an electrolytic cell equipped with anode and cathode plates. Under the influence of an electric current, metal ions in the solution are deposited on the cathode to form pure metal. In nickel electrowinning, the electrolyte is supplied to the electrolytic cell via a pipeline system, either by gravity flow or by pumping from a high-level tank. The method of electrolyte supply has a significant impact on the quality of the finished metal and the operation and maintenance of the electrolytic cell.

[0003] In existing technologies, traditional nickel electrowinning involves creating small holes in the electrolyte supply pipe on the tank surface, allowing the electrolyte to be injected into the area where the cathode plate is located under pressure. When the solution enters, it splashes on the liquid surface, causing vapor, acid mist, or solution droplets to escape into the upper space and adhere to the conductive copper rods on the seed plate or the starting electrode and the conductive beams of the anode plate, forming crystals on their surfaces. This causes corrosion of the copper rods and beams, which in turn contaminates the solution, ultimately leading to excessive impurities in the finished nickel plate.

[0004] Nickel sulfate crystallizing on the conductive copper rod and the conductive beam of the anode plate falls into the cathode diaphragm bag, causing localized excessively high solution concentrations or adhesion between the nickel plate and the diaphragm bag. This leads to problems such as plate burning and bag sticking, affecting product quality and increasing production costs. Utility Model Content

[0005] To address the shortcomings of the aforementioned technologies, this invention provides a positioning and correction device for pre-coating a type of fastener with chemical adhesive.

[0006] The technical solution of this utility model is as follows: an electrolytic cell liquid supply device for electrolytic nickel production, comprising an electrolytic cell liquid supply pipe, an externally threaded pagoda connector, and a transparent liquid inlet hose; the two ends of the electrolytic cell liquid supply pipe are connected to the main liquid supply pipe of the electrolytic system through hoses, and the electrolytic cell liquid supply pipe is provided with a threaded hole for outputting electrolyte in the electrolytic cell; the externally threaded pagoda connector is connected to the threaded hole on the electrolytic cell liquid supply pipe through threads; one end of the transparent liquid inlet hose is fitted onto the externally threaded pagoda connector, and the other end naturally hangs below the liquid surface in the electrolytic cell due to the weight of the hose itself and the weight of the solution inside the hose.

[0007] A further feature of this invention is that the central axis of the threaded hole is inclined, and the liquid outlet side of the threaded hole is closer to the bottom surface of the electrolytic cell cavity than the other side.

[0008] A further feature of this invention is that the angle between the threaded hole and the bottom surface of the electrolytic cell cavity is 15° to 45°.

[0009] A further feature of this invention is that the number of threaded holes on the electrolytic cell supply pipe is determined according to the number of cathode plates in the electrolytic cell, and is consistent with the number of cathode plates.

[0010] Further features of this invention: The device also includes a short-connecting transparent hose, a Y-type pagoda connector, and a pair of liquid outlet transparent hoses, each with a corresponding number of threaded holes. One end of the short-connecting transparent hose is connected to the external threaded pagoda connector, and the other end is tightly connected to one of the three ports of the Y-type pagoda connector. The pair of liquid outlet transparent hoses are respectively tightly connected to the two ports of the Y-type pagoda connector and hang down below the liquid surface in the electrolytic cell.

[0011] Further features of this invention: the diameter of the electrolytic cell supply pipe is 25-50mm, the material is CPVC, PP or PPH, and the temperature resistance should be greater than 70℃; the solution in the electrolytic cell supply pipe is supplied by the main supply pipe of the electrolysis system through the front-end high-level tank or the transfer pump.

[0012] Further features of this invention: the electrolytic cell supply pipe is installed on the side wall of one side of the electrolytic cell, the spacing of the threaded holes is 130-160mm, the hole diameter is 4-6mm, and the number of threaded holes on the electrolytic cell supply pipe is 20-50.

[0013] Further features of this invention: the inner diameter of the external threaded pagoda connector is 2-3mm, the thread length is 5-8mm, and the outer diameter of the thread forms a tight fit with the threaded hole on the electrolytic cell supply pipe; the external threaded pagoda connector is made of PP, which is transparent or semi-transparent, and a bolt for fastening is provided between the thread and the pagoda connector.

[0014] Further features of this invention: the inner diameter of the transparent liquid inlet hose is 3-5mm, the wall thickness is 1-1.5mm, the length is 20-50mm, and the material is PP hose or silicone rubber.

[0015] The beneficial effects of this invention are as follows: The electrolytic cell supply pipe and the transparent inlet hose are connected via a suitable-diameter external threaded pagoda connector, with the other end of the transparent inlet hose submerged below the solution surface. The inner diameter of the external threaded pagoda connector determines the supply flow rate. The use of a transparent hose allows for real-time observation of the solution flow within the pipe. If crystallization blockage occurs, the operator on the tank surface can detect and address it immediately. The submersion of one end of the transparent inlet hose in the solution prevents problems such as solution splashing, acid mist and vapor evaporation, and droplet escape. This protects the copper conductive rod and the conductive beam of the anode plate from corrosion and prevents crystals from adhering to their surfaces, eliminating solution contamination and fundamentally solving problems such as plate burning and bag sticking caused by nickel sulfate crystals falling into the solution. Attached Figure Description

[0016] Figure 1 The structure of this utility model embodiment Figure 1 ;

[0017] Figure 2 The structure of this utility model embodiment Figure 2 ;

[0018] Figure 3 The structure of this utility model embodiment Figure 3 .

[0019] Among them, 1-electrolytic cell, 2-electrolytic cell supply pipe, 21-threaded hole, 3-external threaded pagoda connector, 4-transparent inlet hose, 5-Y-type pagoda connector, 6-short connector hose, 7-outlet transparent hose.

[0020] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0021] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0022] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-3 As shown, Example 1:

[0023] Step 1: The diameter of the liquid supply pipe of electrolytic cell 1 is 25-50mm, the material is CPVC, PP or PPH, and the temperature resistance should be greater than 70℃; the solution in the liquid supply pipe 2 of electrolytic cell is supplied by the main liquid supply pipe of the electrolysis system through the front high-level tank.

[0024] Step 2: The electrolytic cell supply pipe 2 is installed next to the side wall of one side of the electrolytic cell 1. Threaded holes 21 are opened on the pipe, with a spacing of 130-160 mm and a diameter of 4-6 mm. The central axis of the threaded holes 21 is inclined downwards at an angle of 15° to 45° with the plane of the electrolytic cell.

[0025] Step 3: The inner diameter of the external threaded pagoda connector 3 is 2-3mm, and the thread length is 5-8mm. The outer diameter of the thread forms a tight fit with the threaded hole 21 on the electrolytic cell supply pipe. The external threaded pagoda connector 3 is made of PP, which is transparent or semi-transparent. There is a bolt between the thread and the pagoda connector for fastening, which tightly connects the external threaded pagoda connector 3 to the electrolytic cell supply pipe 2.

[0026] Step 4: The inner diameter of the transparent inlet hose 4 is 3-5mm, the wall thickness is 1-1.5mm, and the length is 20-50mm. The material is PP hose or silicone rubber. One transparent inlet hose 4 is fitted onto the external threaded pagoda connector 3, ensuring a tight, leak-free connection.

[0027] Step 5: After the external threaded pagoda connector 3 is connected to the electrolytic cell supply pipe 2 and the transparent inlet hose 4, immerse one end of the transparent inlet hose 4 into the solution in the electrolytic cell.

[0028] Example 2:

[0029] The only difference between this embodiment and Embodiment 1 is that:

[0030] Step 4: Two transparent feed hoses 4 are used to introduce the solution. One transparent hose is used as a short connector, with one end connected to the external threaded pagoda connector 3 and the other end connected to one end of the Y-shaped pagoda connector 5 tee. The other two transparent feed hoses are connected to the other two ends of the Y-shaped tee. The transparent hoses and pagoda connectors must be tightly connected to ensure no leakage.

[0031] Step 5: Connect the two transparent liquid inlet hoses tightly to the other two ends of the "Y"-shaped pagoda connector, and immerse the other ends of the two transparent liquid inlet hoses in the solution in the electrolytic cell.

[0032] Other conditions are the same as in Example 1.

[0033] The advantage of using two transparent liquid inlet hoses is that after the seed plate or starting electrode is placed in the tank, the two liquid inlet hoses can supply liquid to both sides of the plate respectively, avoiding the uneven solution concentration that may be caused by single-sided liquid supply, ensuring that the solution concentration on both sides is consistent, and guaranteeing the quality and growth efficiency of the nickel plate.

[0034] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A liquid supply device for an electrolytic cell in electrolytic nickel production, characterized in that: The system includes an electrolytic cell supply pipe, an externally threaded pagoda connector, and a transparent inlet hose. The electrolytic cell supply pipe is connected to the main supply pipe of the electrolysis system at both ends via hoses. The electrolytic cell supply pipe has a threaded hole inside the electrolytic cell for outputting electrolyte. The externally threaded pagoda connector is connected to the threaded hole on the electrolytic cell supply pipe via threads. One end of the transparent inlet hose is fitted onto the externally threaded pagoda connector, and the other end naturally hangs below the liquid surface in the electrolytic cell due to the weight of the hose itself and the solution inside the hose.

2. The electrolytic cell supply device for electrolytic nickel production according to claim 1, characterized in that: The central axis of the threaded hole is inclined, and the liquid outlet side of the threaded hole is closer to the bottom surface of the electrolytic cell cavity than the other side.

3. The electrolytic cell supply device for electrolytic nickel production according to claim 2, characterized in that: The angle between the threaded hole and the bottom surface of the electrolytic cell cavity is 15° to 45°.

4. The electrolytic cell supply device for electrolytic nickel production according to claim 3, characterized in that: The number of threaded holes on the electrolytic cell supply pipe is determined according to the number of cathode plates in the electrolytic cell and is consistent with the number of cathode plates.

5. A electrolyte supply device for an electrolytic cell in electrolytic nickel production according to any one of claims 1-4, characterized in that: The device also includes a short-connecting transparent hose, a Y-type pagoda connector, and a pair of liquid outlet transparent hoses, each with a corresponding number of threaded holes. One end of the short-connecting transparent hose is connected to the external threaded pagoda connector, and the other end is tightly connected to one of the three ports of the Y-type pagoda connector. The pair of liquid outlet transparent hoses are respectively tightly connected to the two ports of the Y-type pagoda connector and hang down below the liquid surface in the electrolytic cell.

6. The electrolyte supply device for an electrolytic cell in nickel electrowinning production according to claim 5, characterized in that: The diameter of the electrolytic cell supply pipe is 25-50mm, and the material is CPVC, PP or PPH, with a temperature resistance greater than 70℃. The solution in the electrolytic cell supply pipe is supplied by the main supply pipe of the electrolysis system through the front-end high-level tank or the transfer pump.

7. The electrolytic cell supply device for electrolytic nickel production according to claim 5, characterized in that: The electrolytic cell supply pipe is installed next to the side wall on one side of the electrolytic cell. The spacing of the threaded holes is 130-160mm, the hole diameter is 4-6mm, and the number of threaded holes on the electrolytic cell supply pipe is 20-50.

8. The electrolytic cell supply device for electrolytic nickel production according to claim 5, characterized in that: The inner diameter of the external threaded pagoda connector is 2-3mm, the thread length is 5-8mm, and the outer diameter of the thread forms a tight fit with the threaded hole on the electrolytic cell supply pipe. The external threaded pagoda connector is made of PP, which is transparent or semi-transparent, and a bolt for fastening is provided between the thread and the pagoda connector.

9. The electrolyte supply device for an electrolytic cell in nickel electrowinning production according to claim 5, characterized in that: The transparent liquid inlet hose has an inner diameter of 3-5mm, a wall thickness of 1-1.5mm, and a length of 20-50mm. It is made of PP tubing or silicone rubber.

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