when customers purchase refractory bricks, there are some physical and chemical indexes for reference, there are also many kinds of physical and chemical indexes of refractory bricks, and volume density is one of the indexes, but it is a very important index information, today we will introduce the volume density of refractory bricks.
Definition of Volume Density
The volume density of the refractory brick is the ratio of the dry mass of the refractory brick to the volume of the total volume (the volume of the solid, the open hole and the closed hole), that is, the mass of the unit volume of the firebrick, and the representation method is g/cm3 or kg/m3. The volume density of refractory bricks represents the densification degree of refractory bricks, and is one of the basic indexes of all refractory bricks quality standards.
The volume density of the refractory brick has a significant influence on many other properties, such as apparent porosity, strength, corrosion resistance, load softening temperature, wear resistance and thermal shock resistance. For light refractory bricks, the volume density is closely related to thermal conductivity and thermal capacity. Generally speaking, the higher the volume density of refractory bricks, the better the strength, corrosion resistance and wear resistance of firebricks.
Factors Affecting the Volume Density of Refractory Bricks and Matters Need Attention
The volume density of the refractory brick is influenced by the factors such as the raw material and production technology. Therefore, the volume density of the raw material used in the production of refractory bricks, the pressure of the brick in the process of making, the formulation and control of the reasonable firing system can effectively control the volume density of the fired bricks.
