Steel ladle magnesia carbon brick crack repairing material and using method thereof

Abstract

The invention discloses a steel ladle magnesia carbon brick crack repairing material. The steel ladle magnesia carbon brick crack repairing material is prepared from, by weight, 25%-40% of sintered magnesite particles with the particle size ranging from 1 mm to 3 mm, 5%-10% of sintered magnesite particles with the particle size ranging from 0 mm to 1 mm, 10%-15% of sintered magnesite fine powder, 10%-15% of waste magnesia carbon brick particles with the particle size ranging from 1 mm to 3 mm, 10%-15% of waste magnesia carbon brick particles with the particle size ranging from 0 mm to 1 mm, 5%-10% of waste magnesia carbon brick fine powder, 5%-8% of Guangxi mud, 1% of yellow dextrin and 8%-12% of water glass powder, and the sum of the weight percentage of the raw materials is 100%. According to the steel ladle magnesia carbon brick crack repairing material, the waste materials are utilized, and energy sources are saved; meanwhile, plastic substances are added, therefore, the construction strength and the bonding strength of the steel ladle magnesia carbon brick crack repairing material are improved, and the purpose of prolonging the service life is achieved.

Description

technical field [0001] The invention relates to a ladle magnesia-carbon brick crack repair material and its application method. Background technique [0002] As the requirements for steel quality are getting higher and higher, and the requirements for ladle smelting are becoming more and more stringent, more and more refining ladles use magnesia-carbon bricks. During use, due to thermal expansion and contraction of magnesia-carbon bricks, line change control Trouble, cracks and grooves may appear during use. Due to the limitation of the bonding performance of conventional castables, it is difficult to bond well and easy to fall off. Contents of the invention [0003] In view of the above problems, the present invention provides a ladle magnesia-carbon brick crack repair material, which can repair the cracks formed by magnesia-carbon bricks, increase the safety of the ladle, and improve the service life of the ladle furnace. [0004] The technical scheme adopted in the pre...

AI Technical Summary

Problems solved by technology

[0002] As the requirements for steel quality are getting higher and higher, and the requirements for ladle smelting are becoming more and more stringent, more and more refining ladles use magnesia-carbon bricks. During use, due to thermal expansion and contraction of magnesia-carbon bricks, line change control Trouble, cracks and grooves may appear during use. Due to the limitation of the bonding performance of conventional castables, it is difficult to bond well and easy to fall off