Ceramic fiber is a kind of fibrous lightweight refractory, which has light weight, high temperature resistance, good thermal stability, low thermal conductivity, low heat and mechanical shock resistance and other advantages; therefore it is widely applied in machinery, metallurgy, chemical, oil, ceramics, glass, electronics and other industries. Ceramic fiber products use ceramic fiber as raw material with a special textile technology and equipment, which has high tensile strength under high temperature, stability of shape dimension, resistance to shock and impact and other characteristics; after being dried, its physical and chemical properties and insulation properties can recover. It is safe and reliable with remarkable energy saving effect, and it also can reduce the maintenance time and frequency, which are the ideal thermal insulation products in the industry. Ceramic fiber products have light weight, good heat insulation performance and thermal stability, good chemical stability, easy processing, and convenient construction. Its defect is that it is not abrasion and impact resistance, which cannot resist high speed air flow scouring and the erosion of slag.