High-temperature anti-oxidation coating of high-temperature graphite electrode

Abstract

The invention relates to a graphite electrode coating, and particularly relates to a high-temperature anti-oxidation coating of a high-temperature graphite electrode coated with a high-temperature anti-oxidation ceramic coating, belonging to the technical field of electrode production. The high-temperature anti-oxidation coating is prepared from the following raw materials in parts by weight: 15-50 parts of aluminum oxide, 5-30 parts of diboron trioxide, 1-5 parts of magnesium oxide, 0-5 parts of dispersing agent and 20-70 parts of soluble phosphate solution. By adopting the coating disclosed by the invention, the graphite electrode can be effectively prevented from being oxidized, so that the consumption and production cost of the graphite electrode are reduced.

Description

technical field [0001] The invention relates to a graphite electrode coating, in particular to a high-temperature graphite electrode anti-oxidation high-temperature coating coated with a high-temperature anti-oxidation ceramic coating, which belongs to the technical field of electrode production. Background technique [0002] The large consumption of electrolytic anodes is one of the main reasons for the high cost of electrolytic production, accounting for about 15% of the total cost, and is an important indicator that every electrolytic production enterprise must assess. In 2011, the output of electrolytic aluminum in my country was 19 million tons. However, there is a large gap between the carbon consumption of electrolytic aluminum anodes in my country and the international advanced level. According to literature reports, the net consumption of anodes in foreign countries is 406kg / t-Al, while the average net consumption of electrolytic aluminum in my country is 460~500 k...

AI Technical Summary

Problems solved by technology

However, there is a large gap between the carbon consumption of electrolytic aluminum anodes in my country and the international advanced level. According to literature reports, the net consumption of anodes in foreign countries is 406kg / t-Al, while the average net consumption of electrolytic aluminum in my country is 460~500 kg / t-Al. About t-Al, my country's electrolytic aluminum consumes about 950,000 tons of carbon anodes every year, which not only leads to an increase in production costs, but also causes a large amount of waste of non-renewable high-quality carbon resources, which seriously restricts the further development of my country's electrolytic aluminum industry.