A kind of brush paste coating formula of graphite electrode green body

Abstract

The invention relates to a brushing paint formula for graphite electrode green body. By introducing petroleum coke powder and graphite powder into the composition of the electrode green body brushing paint formula and using high alumina bauxite clinker powder instead of quicklime powder, using polyvinyl alcohol Film-forming properties and sucrose cohesiveness form the green paint formula, which has the advantages of convenient preparation, low cost, easy procurement, long-term storage, strong adhesion between the paint and the electrode green surface at room temperature, and convenient brushing operation, which can Use mops, brushes, roller brushes and other tools for brushing operations to reduce the adhesion strength of metallurgical coke particles on the electrode surface after roasting and reduce the embedding depth, reduce the labor intensity of manual cleaning, reduce the cutting amount of electrode processing, and retain the maximum electrode processing Diameter, improve the yield rate of graphitized products mechanical processing.

Description

technical field [0001] The invention relates to the field of graphite material preparation, in particular to a graphite electrode green body brushing paint formula. Background technique [0002] During the primary roasting process of graphite electrode extrusion molding green body in carbon roasting furnace, metallurgical coke filler particles as heat transfer heating element are often embedded in the electrode surface, and the embedded depth is generally 3 to 5mm, resulting in the surface of the electrode roasted product being cleaned with a flat shovel The operation is very laborious, which increases the labor intensity of the cleaning personnel, especially when the electrode temperature drops to room temperature, due to the thermal shrinkage effect of the electrode, the adhesion strength of the metallurgical coke filler embedded in the electrode baked product is further increased, making it more difficult to clean. Another reason why it must be cleaned up at the end is th...

AI Technical Summary

Problems solved by technology

[0004] Since the surface of the green electrode does not absorb water and there are no micropores inside, and the green electrode is a hydrophobic material, it is difficult for general water-soluble brushing paint to adhere to the surface of the electrode or penetrate into the surface of the green electrode In the micropores, it is difficult to brush the electrode green body. Therefore, it is very necessary to find a water-soluble brushing coating suitable for the electrode green body

The original brushing paint formula is composed of tap water, salt, and quicklime. Due to its low adhesion, the surface of the green electrode body is not easy to be wetted, and the brushing paint cannot be evenly spread on the electrode surface, and the use effect is not ideal. Therefore, a new brushing paint formula is needed to improve the adhesion effect of the electrode green surface paint, and then improve the cleaning effect of the electrode baked product