PROCESS FOR PRODUCING OF CALCIUM SILICATE SHAPES

摘要

(A) mixing lime and siliceous material like diatomaceous earth in a CaO/SiO2 mole ratio of 0.8-1.80 ; (B) mixing above mixture with water to produce raw material slurry ; (C) heating the slurry at 80-100 deg.C and 1 atm into C-S-H gel slurry ; (D) adding diluted water glass to the slurry to produce a mixed slurry containing amorphous calcium silicate ; (E) adding to the mixed slurry reinforcing fibers in 0.25-20wt%, followed by dewatering under pressure and molding ; and (F) curing, aging and drying sucessively the molded product in a stack-type autoclave under the saturated steam pressure at 170-250 deg.C. The diluted water glass contains less than 10% of solid portion.