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Graphite electrode green body swabbing coating formula

A graphite electrode and green body technology, which is applied in the field of graphite electrode green body brush slurry coating formulation, can solve the problems of difficult adhesion, the surface of the electrode green body is not easily wetted, and the use effect is not ideal.

Active Publication Date: 2021-09-10
JILIN CARBON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 72kg of tap water at a temperature of 65-75°C, add 2.25kg of polyvinyl alcohol, keep it warm for 2 hours, add 0.75kg of sucrose, and prepare an aqueous solution with a concentration of 3% polyvinyl alcohol and 1% sucrose by weight, and the weight of the aqueous solution is 72+2.25+ 0.75=75kg, stir the aqueous solution evenly, then add 8kg of high-alumina bauxite clinker powder, 12kg of petroleum coke powder, 5kg of graphite powder, the total weight of paint fillers is 8+12+5=25kg, stir evenly, and prepare green paint , The total weight of paint is 75+25=100kg. The paint formulation ratio is high alumina bauxite clinker powder: petroleum coke powder: graphite powder: tap water: polyvinyl alcohol: sucrose = 8:12:5:72:2.25:0.75.

Embodiment 2

[0033] Take 70.5kg of tap water at a temperature of 65-75°C, add 3kg of polyvinyl alcohol, keep it warm for 2 hours, add 1.5kg of sucrose, and prepare an aqueous solution with a concentration of 4% polyvinyl alcohol and 2% sucrose by weight, and the weight of the aqueous solution is 70.5+3+ 1.5=75kg, stir the aqueous solution evenly, then add 6kg of high-alumina bauxite clinker powder, 14kg of petroleum coke powder, 5kg of graphite powder, and the total weight of paint fillers is 6+14+5=25kg, stir evenly to obtain green paint , The total weight of paint is 75+25=100kg. The paint formula ratio is high alumina bauxite clinker powder: petroleum coke powder: graphite powder: tap water: polyvinyl alcohol: sucrose = 6:14:5:70.5:3:1.5.

Embodiment 3

[0035] Take 72kg of tap water at a temperature of 65-75°C, add 2.25kg of polyvinyl alcohol, keep it warm for 2 hours, add 0.75kg of sucrose, and prepare an aqueous solution with a concentration of 3% polyvinyl alcohol and 1% sucrose by weight, and the weight of the aqueous solution is 72+2.25+ 0.75=75kg, stir the aqueous solution evenly, then add 12kg of high-alumina bauxite clinker powder, 12kg of petroleum coke powder, 6kg of graphite powder, the total weight of paint fillers is 12+12+6=30kg, stir evenly, and prepare green paint , The total weight of paint is 75+30=105kg. The coating formulation ratio is high alumina bauxite clinker powder: petroleum coke powder: graphite powder: tap water: polyvinyl alcohol: sucrose = 12:12:6:72:2.25:0.75.

[0036] According to the coating formula prepared in the above-mentioned Examples 1 to 3, during application, tools such as mops, brushes, and rolling brushes can be used for brushing and coating operations, and then the electrode green ...

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Abstract

The invention relates to a graphite electrode green body swabbing coating formula, which is characterized in that petroleum coke powder and graphite powder are introduced into the electrode green body swabbing coating formula, high bauxite chamotte powder is used for replacing quicklime powder, and the film-forming property of polyvinyl alcohol and the cohesiveness of cane sugar are utilized to form the green body coating formula. The formula has the advantages of being convenient to prepare, low in cost, easy to purchase, capable of being stored for a long time, high in adhesive force between the coating and the surface of an electrode green body at normal temperature, convenient to brush and operate and capable of being brushed by using tools such as a mop, a brush and a rolling brush, reducing the adhesive strength of roasted metallurgical coke particles on the surface of the electrode, reducing the embedding depth, reducing the labor intensity of manual cleaning, reducing the cutting output of electrode machining, reserving the maximum electrode machining diameter, and improving the mechanical machining yield of graphitized products.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/87
CPCC04B41/5031C04B41/87C04B41/009C04B35/522C04B41/4535C04B41/5001C04B41/4869C04B41/46C04B41/0072Y02P20/10
Inventor 王成华贾文涛姚禄广张国亮崔国伟姜彦明光海涛
Owner JILIN CARBON
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