?As a new type of product, lightweight thermal insulation bricks are now not only used in industry but also suitable for bathrooms, kitchens, TV background walls, bedrooms, exterior walls, etc. due to the different characteristics and physical and chemical indicators of thermal insulation bricks.
1. Chemical composition
The main materials of
thermal insulation brick are magnesia and floating beads. Because the price of floating beads is relatively cheap, floating beads are generally used to make lightweight thermal insulation bricks. After 2003, fly ash and other lightweight refractory materials were basically replaced, but some high-grade lightweight bricks still use floating beads, of which silicon dioxide is about 50-65%, and aluminum oxide is about 25-35%. Because the melting point of silica is as high as 1725 degrees Celsius, the melting point of aluminum oxide is 2050 degrees Celsius, both of which are highly refractory materials. Therefore, floating beads have extremely high refractoriness, generally reaching 1600-1700 degrees Celsius, making them an excellent high-performance refractory material.
2. Use
Lightweight thermal insulation brick, high-temperature resistance, high bulk density, high strength, wear resistance, acid, and alkali corrosion resistance. Widely used in high-temperature furnaces such as metallurgy, chemical industry, electronics, glass, etc. Lightweight thermal insulation brick has a small specific gravity, high strength, and thermal conductivity It has the characteristics of low coefficient, good thermal insulation performance, and high operating temperature. It is widely used in the construction of industrial kilns in national defense, chemical industry, metallurgy, machinery, building materials, electronics, coking, shipbuilding, medicine, rubber, and other industries, and has better thermal insulation performance for extra-large kilns. It has the advantages of reducing the weight of the kiln, thinning the kiln wall, changing the kiln structure, increasing the heating rate, reducing energy consumption, improving working conditions, and improving work efficiency. Lightweight insulation brick, high-temperature resistance, high bulk density, high strength, wear resistance, acid and alkali corrosion resistance. Widely used in metallurgy, chemical industry, electronics, glass, and other high-temperature furnaces.
