The silicate refractory fiber, which uses silica sol as the main raw material, is widely used in industrial furnaces and other equipment as thermal insulation materials due to its excellent energy saving and high temperature resistance. Other unshaped refractory materials using silica sol as a binder, because they will not bring various low melting point oxides, improve the performance, and have the advantages of high mold release strength, high temperature stability, and good seismic performance.
In addition, acid-resistant cement or ceramics treated with silica sol can produce acid-resistant chemical equipment, which can prevent acid penetration and withstand higher pressure.
Unshaped refractories use silica sol as the bonding agent, and the bonding agent will not cause deterioration of its performance at high temperatures due to the low melting point oxide. The matrix of the unshaped refractory material is composed of special-grade or first-grade high-alumina clinker and silica powder, which generates a needle columnar secondary mullite network structure at high temperature, so that it has a high-temperature volume under the condition of high high-temperature strength. Stability, good resistance to sudden temperature changes, etc.