Shaped refractories refer to refractory materials with fixed shapes and sizes, which are usually used in various equipment and containers in high temperature environments. According to different classification standards, shaped refractories can be divided into the following categories:
Classification by chemical composition:
Acidic refractories: with silicon dioxide as the main component, such as silica bricks.
Alkaline refractories: with magnesium oxide, calcium oxide or a mixture of the two as the main component, such as magnesium bricks.
Neutral refractories: such as corundum and silicon carbide products.
Classification by supply form:
Compact shaped products: with a total porosity of less than 45%, such as high alumina bricks.
Insulation shaped products: with a total porosity of more than 45%, such as lightweight clay bricks.
Classification by chemical composition:
Siliceous refractories: mainly composed of silicon dioxide, with high thermal shock resistance.
Aluminum refractory materials: such as corundum, have excellent high temperature resistance and corrosion resistance.
Magnesium refractory materials: such as magnesium bricks, are widely favored for their high melting point and high thermal conductivity.
Classification by application field:
Refractory materials for metallurgical industry: need to withstand high temperature and erosion of molten metal.
Refractory materials for glass kilns: need to have good thermal shock resistance and corrosion resistance.
These classification methods help to select suitable shaped refractory materials according to specific needs to ensure their stable operation in high temperature environments.
