Negative plate with insulating sealed edge

Abstract

The invention discloses a negative plate with an insulating sealed edge, which comprises a negative plate body and a conductive beam, wherein the conductive beam is connected with one end of the negative plate body; a hanger is arranged on the conductive beam; the negative plate further comprises an insulating sealed edge band; the insulating sealed edge band is integrally cast with one side edge of the negative plate body. According to the invention, an insulating material is directly formed and tightly bonded to the edge of the negative plate via plastifying, extruding and cooling through an injection molding machine, so as to become the insulating sealed edge band of the negative plate, so that mechanical striking installation is not needed, the mounting procedure is eliminated, and the mounting cost is reduced; the insulating material is tightly bonded with the negative plate without a gap, so that an acid liquor can not enter the edge of the negative plate to prevent the acid liquor from corroding the negative plate; the negative plate with the insulating sealed edge is acid-resisting, corrosion-resisting, simple in structure and excellent in sealing effect.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and in particular relates to a cathode plate with insulating edges used in metal electrolysis and electrowinning processes in the hydrometallurgy process. Background technique [0002] The production of high-purity non-ferrous metals by hydrometallurgy mainly adopts the method of electrolysis or electrowinning. As an important part in the process, the cathode plate introduces negative charge through the electrode, metal ions are reduced and deposited on the cathode plate, and then the metal deposited on the cathode plate is stripped by stripping equipment to obtain high-purity metal. The cathode plate is mainly made of stainless steel or titanium. In order to achieve the purpose of insulation and regular product shape, an additional layer of insulating edge banding is required on both sides of the cathode plate. [0003] At present, there are roughly the following types of cathode plate ...

AI Technical Summary

Problems solved by technology

Polyethylene material has creep characteristics, especially when the electrolyte temperature is high, it is more prone to creep phenomenon, which makes the insulating edge strip of the above structure not clamp tightly. It is also necessary to produce the tension rod separately, which increases the process and increases the cost. The sealing strip only clamps the cathode plate by mechanical force, and the stability is not strong

[0006] In actual production, especially in the zinc smelting industry, the service life of the insulating edge strips of aluminum cathode plates is not ideal in domestic zinc factories. Zinc is deposited in the gap, and the side edge of the strip is easy to be cracked when the zinc sheet is peeled off

2) The clamping force of the insulating edge strips gradually deteriorates during use, and the air hammer vibrates when the zinc sheet is pre-stripped, making the gap between the edge strips and the aluminum plate larger and larger, and eventually the edge strips are damaged and fall off

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