Anti-oxidation spraying device and method for anode carbon block for aluminum electrolysis

Abstract

The invention belongs to the technical field of anti-oxidation spraying equipment, and discloses an anti-oxidation spraying device and method for an anode carbon block for the aluminum electrolysis. The anti-oxidation spraying device for the anode carbon block for the aluminum electrolysis comprises a supporting framework and a carbon block work platform arranged at the lower side of the supporting framework, spraying units are arranged on the four side faces of the supporting framework, each spraying unit comprises a spraying device body and a moving mechanism which connects a spraying gun of the spraying device body and the supporting framework, a transverse sliding table and a longitudinal sliding table of each moving mechanism are provided with patches, a driving lug is provided with a proximity switch matched with the patches, a PLC system is used for controlling forward and backward rotation of lifting motors and transversely-moving motors and controlling the limit motions of the proximity switch and the patches, and accordingly the longitudinal sliding tables and spraying supports are adjusted to carry out spraying in an S shape. The anti-oxidation spraying device and method for the anode carbon block for the aluminum electrolysis achieve the technical purpose of automatic electric arc spraying of aluminum coatings for the anode carbon block, improve work efficiency, save expenses, and avoid damage to the human body by smoke dust, harmful gas, noise and the like caused by electric arc spraying.

Description

technical field [0001] The invention belongs to the technical field of anti-oxidation spraying equipment, and in particular relates to an anti-oxidation spraying device and method for an anode carbon block used in aluminum electrolysis. Background technique [0002] In the production process of electrolytic aluminum, before the anode carbon block is immersed in the electrolyte, the upper part is covered with a covering material, but the rest of the surrounding area is exposed to high temperature environment, causing oxidation. When oxidation occurs, slag, cracks, and block loss will occur. Seriously affect the economic benefits of aluminum electrolysis plants. [0003] The problem of anodic oxidation in China has also begun to attract the attention of electrolytic aluminum enterprises in recent years. Individual enterprises and design units have begun to test anodic anti-oxidation technologies and methods. Method, a company uses borax, industrial phosphoric acid, kaolin...

AI Technical Summary

Problems solved by technology

[0002] In the production process of electrolytic aluminum, before the anode carbon block is immersed in the electrolyte, the upper part is covered with a covering material, but the rest of the surrounding area is exposed to high temperature environment, causing oxidation. When oxidation occurs, slag, cracks, and block loss will occur. Seriously affect the economic benefits of aluminum electrolysis plants

[0003] The problem of anodic oxidation in China has also begun to attract the attention of electrolytic aluminum enterprises in recent years. Individual enterprises and design units have begun to test anodic anti-oxidation technologies and methods. Method, a company uses borax, industrial phosphoric acid, kaolin, water, etc. to make a coating and coat it on the surface of the oxidized carbon block. etc., can make the anode carbon block play the purpose of anti-oxidation, but the process is complicated and the effect is not obvious. At the same time, because these methods are all manually operated, the efficiency is low, and it cannot be widely used.

Images