What are the requirements for refractory brick blanks?

1. The chemical composition of refractory brick ingredients must meet the requirements of refractory bricks, and should be higher than the index requirements of refractory bricks. In the chemical composition, the content of the main components of refractory bricks, the total amount of fusible impurities and the allowable amount of harmful impurities are stipulated.

2. At present, the production of refractory bricks generally adopts the semi-dry pressing method, which requires that the refractory brick blanks have sufficient cohesiveness, so the ingredients should contain cohesive components.

3. When the refractory brick raw materials contain components or reducing components, there is a conversion relationship between the raw materials, ingredients and the chemical composition of the refractory bricks.