Water-based converter bedding face repairing material and using method thereof

Abstract

The invention discloses a water-based converter bedding face repairing material and a using method thereof. The repairing material is composed of a component A and a component B. The component A comprises, by weight, 40-65 percent of magnesia particle, 10-20 percent of magnesium forsterite particle, 15-25 percent of magnesia fine powder, 5-15 percent of magnesium oxide micro-powder, 2-5 percent of silicon carbide micro-powder, 1-3 percent of fused quartz fine powder, 0.5-2 percent of quartz fine powder, 0.5-2 percent of silicon micro-powder, 0.2-1.5 percent of pure calcium aluminate cement and 0.5-2.5 percent of alpha-Al2O3 micro-powder, and further comprises 0.05-0.15 percent of organic fiber, 0.05-0.15 percent of nitrate and 0.05-0.15 percent of polycarboxylate superplasticizer, and mixing is carried out. The component B is formed by mixing hydrophilic modification organic silicon and water according to the mass ratio of 1: (8-10). When the water-based converter bedding face repairing material is used, the component A and the component B are mixed according to the mass ratio of 1: (0.06-0.12), stirred into a plastic flowing state, loaded into a hopper and put into a converter, and the converter is shaken quickly. The water-based converter bedding face repairing material has the advantages of being good in self-flowing property, short in sintering time, slag corrosion resistant, long in service life and friendly to the environment.

Description

technical field [0001] The invention belongs to the technical field of repair materials. In particular, it relates to a water-based converter large-surface repair material and a method for using the same. Background technique [0002] The furnace age of the converter is an important technical and economic index in the converter steelmaking, and it is an important factor for the benefit of the steelmaking plant. Increasing the furnace life of the converter can improve the production efficiency of the converter and reduce the consumption of refractories. With the popularization and popularization of converter slag splash protection technology, the furnace life of converter has been increased, reaching about 40,000 furnace times. However, after the slag splashing technology was applied to protect the furnace, the erosion of the converter lining also changed accordingly. The main factor restricting the increase of the furnace life was from the rapid erosion of the furnace cap ...

AI Technical Summary

Problems solved by technology

Judging from the use effect, the large-surface repair material has good high-temperature fluidity, corrosion resistance and long service life, but the sintering time is long, and heavy smoke and a large amount of toxic and harmful gases are released during construction, which seriously pollutes the environment; 2) Wet water system Combined with magnesium repair material: this kind of large surface repair material has a relatively short sintering time, no pollution to the environment, and can repair the furnace in time and quickly, but the large surface repair material has poor adhesion to the furnace lining material, and is not resistant to erosion and erosion , relatively short service life