CN2887892Y

CN2887892Y - Anti-corrosion cathode plate and anode plate for electrolysis of zinc by wet method

Info

Publication number: CN2887892Y
Application number: CNU2006200060728U
Authority: CN
Inventors: 刘明华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-09
Filing date: 2006-03-09
Publication date: 2007-04-11
Anticipated expiration: 2016-03-09

Abstract

The utility model relates to an electrolysis device for zinc making with wet method, in particular to a cathode board and an anode board for zinc making with wet method. The cathode board is composed of a board surface, a board girder, a board neck, and a handle; and the anode board is composed of a board surface, a board girder, and a board neck. The utility model is characterized in that: the surfaces of the board necks on the cathode board and the anode board are provided with an antisepsis layer. The antisepsis layers is made from temperature-resistant and antisepsis material or epoxide resin. The antisepsis layers can avoid the corruption on the board necks caused in the bad environment with heavy acid in the production workshops. Through production test, the use life of the cathode board and the anode board is more than 60 days. The production cost of the zinc electrolysis is reduced; the energy is saved; and the economic profits of the zinc plant are increased.

Description

Corrosion-resistant cathode plate and anode plate for wet-method zinc electrolysis

The technical field the utility model relates to an electrolytic device used in zinc hydrometallurgy, in particular to a negative plate and an anode plate for zinc wet electrolysis.

Background art the cathode plate for wet zinc electrolysis is made of pure aluminum plate, and the anode plate is made of lead-silver alloy or lead-silver multi-element alloy. In the production process, the vast majority of the face submergence of negative plate and anode plate is in the zinc sulfate solution in the electrolysis trough, because of taking place the replacement reaction, on the face of zinc replacement out and attached to the negative plate in the zinc sulfate, its brief electrochemistry trans is:

however, in the production process, the parts above the necks where the plate surfaces of the cathode plate and the anode plate are connected with the plate beam are exposed outside the zinc sulfate solution in the electrolytic tank, and are seriously corroded in an environment with severe acidity in a production workshop due to long-term work, particularly the corrosion of the plate surface necks, namely the parts between the plate surface and the plate beam and the plate surfaces exposed outside the zinc sulfate solution in the electrolytic tank is particularly serious, while the plate surface parts immersed in the zinc sulfate solution in the electrolytic tank are basically intact, but cannot be used continuously due to serious corrosion of the plate surface necks, so that the service lives of the cathode plate and the anode plate are short, and the production cost is increased.

The invention aims to provide a corrosion-resistant cathode plate and anode plate for wet-process electrolytic zinc, which have long service life and reduce the production cost of electrolytic zinc.

The utility model adopts the technical proposal that: a corrosion-resistant cathode plate and anode plate for wet-method zinc electrolysis are disclosed, wherein the cathode plate comprises a plate surface, a plate beam, a plate neck and a handle, and the anode plate comprises a plate surface, a plate beam and a plate neck; the method is characterized in that: the surfaces of the plate necks of the cathode plate and the anode plate are coated with an anticorrosive layer.

The anticorrosive coating is a temperature-resistant anticorrosive material or an epoxy resin material.

The anticorrosive coating can prevent severe environment with serious air acidity in a production workshop from corroding the plate neck, and production tests prove that the service life of the cathode plate and the anode plate is prolonged by more than 60 days on average. Thereby reducing the production cost of electrolytic zinc, saving energy and improving the economic benefit of zinc plants.

Description of the drawings figure 1 is a front view of a cathode plate according to the invention,

figure 2 is a view a-a of figure 1,

figure 3 is a front view of the anode plate of the present invention,

fig. 4 is a view B-B of fig. 3.

The specific implementation is shown in fig. 1 and fig. 2: the utility model provides a wet process electrolysis zinc is with corrosion-resistant negative plate, this negative plate includes face 1, plate girder 2, plate neck 3 and handle 4, and negative plate neck 3 surface scribbles anticorrosive coating 5.

As shown in fig. 3 and 4: the corrosion-resistant anode plate for zinc wet electrolysis comprises a plate surface 1, a plate beam 2 and a plate neck 3, wherein the surface of the plate neck 3 of the anode plate is coated with a corrosion-resistant layer 5.

The anticorrosive coating on the surface of the plate neck of the cathode plate and the surface of the plate neck of the anode plate is as follows: a temperature-resistant and anti-corrosion material or an epoxy resin material.

Although the plate girder 2 is thicker than the plate neck 3, the corrosion resistance is better than that of the plate neck, and the surface of the plate girder 2 is coated with the corrosion-resistant layer 5 to further enhance the corrosion resistance.

Claims

1. The utility model provides a wet process electrolysis zinc is with corrosion-resistant negative plate, this negative plate includes face, plate beam, board neck and handle, its characterized in that: the surface of the plate neck (3) of the cathode plate is coated with an anticorrosive layer (5).

2. The corrosion-resistant cathode plate for zinc wet electrolysis according to claim 1, wherein: and the surface of the plate beam (2) is coated with an anticorrosive coating (5).

3. A corrosion-resistant cathode plate for zinc wet electrolysis according to claim 1 or 2, wherein: the anticorrosive layer (5) is a temperature-resistant anticorrosive material or an epoxy resin material.

4. The utility model provides a wet process electrolytic zinc is with corrosion-resistant anode plate, this anode plate includes face, plate girder, plate neck, its characterized in that: the surface of the plate neck (3) of the anode plate is coated with an anticorrosive layer (5).

5. The corrosion-resistant anode plate for zinc wet electrolysis according to claim 4, wherein: and the surface of the plate beam (2) is coated with an anticorrosive coating (5).

6. The corrosion-resistant anode plate for zinc wet electrolysis according to claim 4 or 5, wherein: the anticorrosive layer (5) is a temperature-resistant anticorrosive material or an epoxy resin material.