A castable for the grid wall of the slag injection basin and its preparation method and use method

Abstract

The invention discloses a castable for a grid wall of a casting residue basin, and a preparation method and an application method of the castable. The castable is composed of 65-85wt% of steel slag, 3-10wt% of silica fume and 10-30wt% of adhesive. The preparation method comprises the following steps: mixing all the raw materials, adding water to the mixture, stirring and pouring into a grid wall formwork, vibrating and maintaining, thus obtaining the grid wall which can be used. The castable provided by the invention is low in cost and high temperature resistant, cannot burst, and can be widely used in various grid walls of casting residue basins.

Description

technical field [0001] The invention belongs to the field of refractory materials used in slag injection basins for steelmaking, and in particular relates to a castable for grid walls of slag injection basins and its preparation and use methods. Background technique [0002] After the steel ladle is filled with molten steel, there is a certain amount of mixture of molten steel and steel slag in the steel ladle, and the mixture is poured into the slag injection pot. After the slag injection pot is filled and cooled to solid, the pot is turned over. Finally, artificial oxygen cutting is performed on the cooled solid, and a large amount of yellow toxic fumes are produced during the cutting process. On the one hand, the high-temperature liquid generated during the cutting process is very easy to cause burns and scalds to the human body. On the other hand, oxygen cutting wastes a lot of oxygen and causes energy waste. Therefore, a grid wall will be used, and the grid wall will be...

AI Technical Summary

Problems solved by technology

[0002] After the steel ladle is filled with molten steel, there is a certain amount of mixture of molten steel and steel slag in the steel ladle, and the mixture is poured into the slag injection pot. After the slag injection pot is filled and cooled to solid, the pot is turned over. Finally, artificial oxygen cutting is performed on the cooled solid, and a large amount of yellow toxic fumes are produced during the cutting process. On the one hand, the high-temperature liquid generated during the cutting process is very easy to cause burns and scalds to the human body. On the other hand, oxygen cutting wastes a lot of oxygen and causes energy waste. Therefore, a grid wall will be used, and the grid wall will be placed in the slag injection basin, and the characteristics of the grid wall itself will be used to block the formation of large-volume scrap steel blocks

At present, there are very few types of refractory materials that are specifically applied to the slag injection basin at home and abroad. Generally, a kind of anti-sticking coating is used in the slag injection basin. However, refractory castables for making grid walls have not been used.