The bulk density of refractory refers to the ratio of the mass after drying to its total volume, in g / cm3. The bulk density directly reflects the compactness of the product. It is an important index of the quality level of refractory raw materials and dense refractory products. However, in the production of light thermal insulation products, various means are often used to reduce the bulk density of products in order to reduce the heat capacity and thermal conductivity.
Bulk density has obvious influence on other properties of refractories, such as porosity, strength, corrosion resistance, load softening temperature, wear resistance and thermal shock resistance. Generally, the higher the bulk density, the better the strength, erosion resistance, wear resistance and load softening temperature of the material.
