Method for connecting edge and insulating edge of permanent cathode
By setting grooves or V-shaped grooves on the edge of the permanent cathode plate and combining with higher strength insulating materials or shaping rods, the insulating edge and the cathode plate are achieved, which solves the problem of particles at the edge of the permanent cathode, significantly improving the Product quality.
Patent Information
- Application Number
- CN202411742240.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In metal electrolysis production, a large number of particles are prone to precipitation at the connection between the permanent cathode and the insulating edge, affecting the quality of the product.
By providing grooves or V-shaped grooves on the edges of the permanent cathode plate and designing a structure stuck in the grooves on the insulated edges, ensure that the insulated edges are close to the edges of the cathode plates, avoiding steps or protrusions that hinder the flow of the solution. If the insulating edge material is insufficient, use a stronger insulating material or wrapped metal material as the shaping rod to apply a pressing force to achieve a tight fit.
The formation of particles at the edge of the permanent cathode is effectively avoided, the product quality is improved, and the physical appearance quality pass rate reaches 95%, which is 7% higher than the traditional method.
Smart Images
Figure CN119433629A_ABST
Abstract
Description
Technical Field
[0001] The invention discloses a method for connecting a permanent cathode edge with an insulating edge, and relates to a method for connecting a permanent cathode edge with an insulating edge. Technical Background
[0002] At present, in the electrolytic production of various metals, if a permanent cathode is used, a large number of nodules will always precipitate at the connection between the permanent cathode and the insulating edge. This is mainly because the insulating edge is attached to the surface of the permanent cathode and is higher than the plane of the permanent cathode to form a step. The solution flows slowly at the step, and the dissolved impurities are easy to form crystal nuclei under the electrochemical reaction conditions here. At the same time, the cathode wrapped by the insulating edge strengthens the electric field strength at this point. The crystal nuclei grow rapidly here to form nodules, affecting product quality. Therefore, it is necessary to develop an insulating edge connection method that can prevent the formation of large nodules at the edge of the permanent cathode. Summary of the invention
[0003] Aiming at the problem that a large amount of granules are easily precipitated at the connection between the permanent cathode and the insulating edge, the present invention provides a method for connecting the edge of the permanent cathode with the insulating edge.
[0004] The present invention is achieved through the following technical solutions.
[0005] (1) The edge of the permanent cathode plate that needs to be insulated is provided with a groove or a V-shaped groove, and there is a structure on the insulating edge that is stuck in the permanent cathode groove or V-shaped groove, or the groove on the insulating edge and the structure of the cathode edge that can be stuck in the groove, the two structures are stuck together, the insulating edge is close to the edge of the permanent cathode plate that needs to be insulated, ensuring that the insulating edge and the edge of the cathode plate are closely fitted and not misaligned, and there is no step or protrusion that hinders the flow of the solution at the connection between the insulating edge and the cathode plate plane, and the connection is smooth.
[0006] (2) The insulating edge is in close contact with the edge of the permanent cathode plate that needs to be insulated. When the strength of the insulating edge material is insufficient, a stronger insulating material or a metal material wrapped by the insulating material is used as a shaping rod. The shaping rod is embedded in the insulating edge or clamped on the insulating edge. A force is applied to the shaping rod to press the insulating edge, so that the insulating edge is in close contact with the edge of the permanent cathode plate to achieve a tight fit.
[0007] (3) In order to fix the insulating edges and shaping rods on both sides and the bottom edge of the permanent cathode plate, buckles of fixing and clamping devices are set up with insulating materials at both ends of the bottom edge of the permanent cathode plate and the upper ends of the insulating edges on both sides. The buckles on the bottom edge can clamp the insulating edges and shaping rods on both sides and the bottom edge of the cathode plate at the same time, and at the same time support the permanent cathode placed on the ground. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 , is a schematic diagram of the method of connecting the permanent cathode edge and the insulating edge. The numbers in the figure represent the following meanings.
[0009] 1: Permanent cathode plate surface; 2: The edge of the permanent cathode that needs to be insulated; 3: V-shaped groove set on the edge of the permanent cathode; 4: Insulation edge; 5: The raised structure on the insulating edge is stuck in the V-shaped groove; 6: The connection between the insulating edge and the cathode plate plane is smooth and has no protrusions on the same plane; 7: The shaping rod embedded in the insulating edge; 8: The round hole for fixing the buckle on the permanent cathode; 9: Buckle; 10: Buckle to fix the insulating edge. DETAILED DESCRIPTION
[0010] Permanent cathode for nickel electrolysis: 1260*900*4mm TA2 titanium plate, connected with conductive rod and surface treated, is used as permanent cathode for nickel electrolysis. The edge and insulation edge of this permanent cathode are as follows: Grooves set on the edge of the permanent cathode: grooves with a depth of 2.5 mm and a width of 2 mm are machined on the center line of both sides and the lower edge of the permanent cathode plate; Insulation edge: Use pure PTFE material to make an insulation edge with a thickness of 4mm and a width of 16mm. A 2.5mm high and 2mm thick protrusion is made along the center line on one side of the 4mm thick insulation edge, which can be embedded in the groove of the permanent cathode edge. A 2mm thick and 10mm wide space is made in the insulation edge to place the shaping rod; The shaping rod embedded in the insulating edge is a 304 stainless steel flat bar with a thickness of 2 mm and a width of 10 mm. In order to make the bonding force between the entire insulating edge and the edge of the cathode plate uniform, the shaping rod has a certain curvature. When the two ends are fixed by buckles, they fit the cathode edge. Buckle: Use PTFE material to make a buckle that matches the size of the insulating edge, and fix it through the circular hole reserved on the cathode plate to achieve the clamping of the insulating edge.
[0011] When using this permanent cathode for nickel electrolysis production, the precipitated metallic nickel has no grains larger than 3 mm at the edge of the permanent cathode. Without appearance treatment, the physical appearance quality pass rate of the product reaches 95%, which is 7% higher than the quality pass rate of nickel plates produced by traditional slot-type insulated edge permanent cathodes.
Claims
1. The edge of the permanent cathode plate that needs to be insulated is provided with a groove or a V-shaped groove, and there is a structure on the insulating edge that is stuck in the permanent cathode groove or V-shaped groove, or the groove on the insulating edge and the structure of the cathode edge that can be stuck in the groove, the two structures are stuck together, and the insulating edge is close to the edge of the permanent cathode plate that needs to be insulated, ensuring that the insulating edge and the edge of the cathode plate are in close contact and not misaligned, and there is no step or protrusion that hinders the flow of the solution at the connection between the insulating edge and the cathode plate plane, and the connection is smooth.
2. The insulating edge is close to the edge of the permanent cathode plate that needs to be insulated. When the strength of the insulating edge material is insufficient, a stronger insulating material or a metal material wrapped by the insulating material is used as a shaping rod. The shaping rod is embedded in the insulating edge or clamps the insulating edge. A force is applied to the shaping rod to press the insulating edge, so that the insulating edge is close to the edge of the permanent cathode plate to achieve a tight fit.
3. In order to fix the insulating edges and shaping rods on both sides and the bottom edge of the permanent cathode plate, buckles of fixing and clamping devices are set with insulating materials at both ends of the bottom edge of the permanent cathode plate and the upper ends of the insulating edges on both sides. The buckles on the bottom edge can clamp the insulating edges and shaping rods on both sides and the bottom edge of the cathode plate at the same time, and at the same time support the permanent cathode placed on the ground.