The following problems should be noted in the refractory brick ingredients:
1. The chemical composition of the refractory bricks must meet the requirements of the refractory bricks, and should be higher than the requirements of the refractory bricks. The chemical composition includes the content of the main components of the refractory bricks, the total amount of fusible impurities and harmful impurities. Quantity regulations.
2. The semi-dry pressing method is generally used in the production of refractory bricks. It requires that the slabs of the refractory bricks should have sufficient bonding, so that the ingredients should be contained in the ingredients.
3. When the refractory brick raw material contains ingredients and discretionary components, a conversion relationship occurs between the chemical composition of the raw materials, the ingredients and the refractory bricks.
Refractory bricks are composed of minerals, and the properties of bricks are a combination of minerals and microstructures of their composition. Therefore, when analyzing the properties of refractory bricks, the chemical composition analysis alone is not comprehensive, and its chemical mineral composition should be further observed. Under the condition of fixed chemical composition, the refractory bricks have different quality of refractory bricks due to the uniformity of distribution and the different production processes of refractory bricks. For example, the most common high-aluminum bricks, because of the difference in alumina content and production process, even if the mineral composition is the same, but the grain size, shape and distribution of minerals are uniform, these are the most affecting the quality of refractory bricks. main reason.
