METHOD FOR PRODUCING ASBESTOS FREE MACHINABLE CALCIUM SILICATE HIGH HEATRESISTANT MATERIAL

摘要

A composition for producing a calcium silicate heat-resistant material, comprises: (A) 100 parts by weight of a mixture of lime and siliceous material having a CaO/SiO2 mole ratio of 0.6-1.2; (B) 20-170 parts by weight of xonotlite obtained by hydrothermal synthesis; (C) 15-150 parts by weight of fibrous wollastonite; and (D) water in an amount of 2-8 times as much as that of the total solid contents. A method for producing a calcium silicate heat-resistant material, comprises the steps of: i) molding a slurry of the above composition; ii) curing said molded body in an atmosphere of steam under a pressure not less than 6 kg/cm2 to react the siliceous material with the lime; and iii) treating to remove water at a temperature not lower than 100 DEG C under atmospheric pressure. p