In January 23tons mullite refractory bricks are packed for delivering to customer in Russia. High quality and best price refractory material products in Topower Refractory.
Mullite refractory bricks are made of artificially synthesized mullite. According to the required proportion of the product, organic composite fillers are added, and they are vacuum extruded and sintered at high temperature to form lightweight mullite products. With its light weight and excellent thermal insulation properties, mullite lightweight refractory bricks are widely used in the hot surface refractory lining or insulation layer of a variety of thermal equipment, creating conditions for improving the energy utilization of the equipment.
Mullite lightweight refractory bricks are high-aluminum refractory materials with mullite as the main crystal phase. Generally, the alumina content is between 65% and 75%. The refractory temperature of mullite lightweight refractory bricks can reach over 1790℃. The starting temperature of softening under load is 1600-1700℃. Good thermal shock resistance.
High alumina mullite refractory bricks are divided into light and heavy ones. Heavy high-alumina mullite bricks are high-alumina refractory bricks with mullite as the main crystal phase. The alumina content is between 65% and 75%. The mineral composition is mullite. Under normal circumstances, the body density is above 2.5.
Mullite bricks include sintered mullite bricks and fused mullite bricks. Sintered mullite bricks are made of high-aluminum clinker as raw material, clay as a binding agent, and shaped and fired. Fused mullite bricks are made of alumina and refractory clay and are cast using the reduction electrofusion method. The crystals of fused mullite are larger than those of sintered mullite, and their thermal shock resistance is better than that of sintered products.
High alumina mullite lightweight brick is one of the thermal insulation refractory materials with uniform structure and low thermal conductivity. The body density is between 1.0-1.5, which has broad market prospects. Lightweight high-alumina mullite bricks are also called mullite bricks. They are used at high temperatures and can be directly exposed to flames, so the energy-saving effect is particularly significant.
Mullite bricks are widely used in areas:
1. Ironmaking industry
Mullite refractory bricks are used in the overhangs and orifices of the hot air ducts of hot blast stoves, pipe vertical pipes and straight pipes with higher temperatures, surrounding areas and temperature stable parts. The grades of mullite bricks used in different areas are different; the parts of torpedo tank cars that are impacted by molten iron , slag line area.
2. Glass ceramic industry
Mullite bricks are used in the main forehearth, regenerator and clarifier walls of glass kilns; mullite bricks are used in ceramic industrial kilns to make saggers and kiln furniture.
3. Building materials industry
Mullite bricks can be used in cement and lime rotary kiln linings.
