Insoluble anode manufacturing method

Abstract

According to the manufacturing method of the insoluble anode, the insoluble anode is composed of a structural frame for installing a conductive rod and insoluble anode strips, the lower portion of the insoluble anode structural frame can be connected with the multiple insoluble anode strips to form the insoluble anode, the structural frame is provided with a structure used for fixing the insoluble anode strips, and the structure is a device with high operability such as a screw and a buckle. The insoluble anode strip can be an integral inert metal strip and can also be formed by wrapping inert metal or alloy on other materials with higher structural strength, and the insoluble anode strip can be in the shape of a cylinder, a flat strip and the like.

Description

Technical Field

[0001] The invention discloses an insoluble anode manufacturing method, and relates to an insoluble anode manufacturing method. Background Art

[0002] Insoluble anode refers to an electrode in which inert materials are used on the anode or anode surface during the electrolytic production process, the solution undergoes an electrochemical reaction on the surface, and the anode itself does not dissolve in the solution. At present, such anodes are all integral anode plate structures, which are fixed conductive rods or detachable conductive rod structures on the upper edge of a whole metal plate or metal mesh, but the anode plate surface itself is a whole. Anodes of this structure have many disadvantages during use: damage to a small area on the surface of the anode plate will cause the entire anode to be scrapped, resulting in large losses and high costs; the overall anode plate is large in size, has a large amount of deformation during use, is prone to short circuit and damage; the overall anode has a large flow resistance to the solution and a small solution flow space, which is not conducive to the improvement of electrolysis technical indicators. The existence of these unfavorable factors has limited the improvement of the technical level of insoluble anodes in the field of industrial applications, and also hindered the further improvement of production technical indicators in the field of insoluble anode applications. The rapid development of new technologies and new materials has put forward new requirements for the advancement of insoluble anode manufacturing methods. Summary of the invention

[0003] The purpose of the present invention is to provide a method for manufacturing an insoluble anode in view of the shortcomings of the above-mentioned anode during use, which is achieved through the following technical solutions.

[0004] A method for manufacturing an insoluble anode, characterized by:

[0005] (1) The insoluble anode is composed of a structural frame for mounting a conductive rod and an insoluble anode strip. A plurality of insoluble anode strips can be connected under the insoluble anode structural frame to form an insoluble anode.

[0006] (2) The structural frame for installing the conductive rod has a structure for fixing the insoluble anode strips. This structure is a highly operable device such as screws and clips.

[0007] (3) The insoluble anode strip can be a whole inert metal strip, or it can be composed of an inert metal or alloy wrapped around other materials with greater structural strength. The insoluble anode strip can be in the shape of a cylinder, a flat strip, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Attached Figure 1 It is a schematic diagram of an insoluble anode structure, which uses a schematic diagram to illustrate the anode structure that can be manufactured by an insoluble anode manufacturing method. The specific structures represented by the numbers are:

[0009] 1: Structural frame for installing conductive rods; 2: Conductive rods; 3: Structural frame; 4: Screw connection structure;

[0010] 5: snap connection structure; 6: cylindrical insoluble anode strip; 7: flat insoluble anode strip. DETAILED DESCRIPTION

[0011] Make a structural frame for installing the conductive rod:

[0012] The conductive rod is 1350*30*30mm copper, fixed to the structural frame by screws. The structural frame is 1050mm wide and 180mm high, made of 3mm thick TA2 titanium material, and 16 15mm long and Φ5mm titanium screw rods are evenly arranged and fixed at the bottom edge;

[0013] Making cylindrical insoluble anode strips:

[0014] The size of the titanium metal rod is Φ10mm, length 1100mm, one end of which is processed with an inner thread structure of Φ5mm and 16mm deep (for fixing on the titanium screw rod on the structural frame); the outside of the titanium metal rod is wrapped with metal lead with a thickness of 6mm.

[0015] Sixteen cylindrical insoluble anode strips are fixed on the structural frame to form an insoluble anode.

[0016] Purification and arsenic removal process of copper electrolyte in sulfuric acid system: the inner diameter of the electrolytic arsenic removal tank is 3500*1200*1500mm. 20 insoluble anodes are placed in the electrolytic arsenic removal tank, and 19 cathodes (cathodes made of copper sheets or cathodes composed of new multi-sheet cathode strips) are placed alternately with the anodes. The anodes are placed in anode bags, and the cathodes are fully in contact with the flowing solution in the solution. The volume of the solution in the tank is 5.4 cubic meters, and the solution contains 30.2g / L arsenic, 18.5g / L copper, and 320g / L sulfuric acid. The electrolysis process adopts the solution circulation method. The propeller driven by the solution at the bottom of the tank drives the solution to flow in the tank. The speed of the solution flowing along the cathode surface is ≥0.1m / s. The direct current intensity of 8800A is passed to start electrolytic copper removal and arsenic removal. According to theoretical calculations and production experience, in the first 20 hours, only the anode releases oxygen, and no bubbles are generated at the cathode. After 33.5 hours, the cathode begins to release a small amount of bubbles. After 35.5 hours, the amount of bubbles released by the cathode increases, and the reaction is stopped. Samples are taken for analysis. At this time, the solution contains 0.01g / L copper and 0.75g / L arsenic, meeting the technical indicator requirement of arsenic removal concentration below 1g / L. The DC power consumption for arsenic removal is calculated as follows: 1g of arsenic can be removed by running a current of 1.16A for 1 hour.

Claims

1. The insoluble anode is composed of a structural frame for mounting the conductive rod and an insoluble anode strip. Multiple insoluble anode strips can be connected under one structural frame to form an insoluble anode.

2. The structural frame for installing the conductive rod has a structure for fixing the insoluble anode strips. This structure is a highly operable device such as screws and buckles.

3. The insoluble anode strip can be a whole inert metal strip, or it can be composed of an inert metal or alloy wrapped around other materials with greater structural strength. The insoluble anode strip can be in the shape of a cylinder, a flat strip, etc.

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