Silicate composite thermal insulation material is a new type of thermal insulation material. The product is made of high quality natural mineral magnesium silicate, chemical additives and high temperature adhesives, through pulping, moulding, setting, drying, finished products, packaging and other processes. This product is a high quality and efficient thermal insulation material with closed microporous structure and reticulated fiber structure. In the use temperature range, it can be used for a long time, not easy to aging, no deterioration, non-toxic, tasteless, long-term insulation performance. It has the characteristics of light weight, small thermal conductivity, cold insulation, heat insulation, shock proof and sound absorption. It can be widely used in metallurgy, chemical industry, petroleum, ship, textile, medicine, transportation, thermoelectricity, construction and other industries. Compared with other thermal insulation materials, it has the characteristics of light weight, convenient construction, arbitrary cutting, relying on type package, no pollution to the environment, no irritation to the skin, no loss in construction and so on.