Common ceramic fiber is also known as aluminum silicate fiber. Because one of its main components is aluminum oxide, which is also the main component of porcelain, it is called ceramic fiber. The use temperature of ceramic fiber can be further increased by adding zirconia or chromium oxide.

Ceramic fiber is a kind of fibrous lightweight refractory material with the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, low specific heat and mechanical vibration resistance. Therefore, it has been widely used in machinery, metallurgy, chemical, petroleum, ceramics, glass, electronics and other industries. In recent years, due to the rising global energy prices, energy conservation has become China's national strategy. In this context, ceramic fiber, which can save up to 10-30% energy than traditional refractory materials such as insulating bricks and castables, has been applied more and more widely, with a very promising development prospect.