Mullite bricks are refractory bricks with mullite as the main crystal phase, with high load softening temperature, low high temperature creep rate, good thermal shock resistance, and strong resistance to acidic slag erosion.
1. Application industries of mullite bricks
Ironmaking industry
Mullite bricks are used for the hot air pipe suspension and orifice of the hot air furnace, pipe vertical pipes and straight pipes with higher temperatures, surrounding and temperature stable parts. Different grades of mullite bricks are used in different areas; the parts of the torpedo tank car that are impacted by molten iron and the slag line area.
Glass and ceramics industry
Mullite bricks are used for the main material channel, heat storage chamber, and clarifier wall of glass kilns; mullite bricks are used to make saggers and kiln tools in ceramic industrial kilns.
Building materials industry
Mullite bricks can be used for cement and lime rotary kiln linings.
2. Classification and application of mullite bricks
Mullite bricks are divided into light mullite bricks and heavy mullite bricks according to different volume densities. The main applications of light mullite bricks are: thermal insulation layers of industrial kilns in metallurgy, petrochemical, building materials, ceramics and other industries, such as heating furnaces, soaking furnaces, heat treatment furnaces, tunnel kilns, roller kilns, shuttle kilns, etc.
Mullite bricks have a wide range of applications, but the selection of refractory bricks for industrial kilns should still meet the needs of the kilns, and secondly consider economic benefits. The comprehensive consideration of kilns selects mullite bricks.