Patent US4816074 - Kaolinite aggregation using sodium silicate .Mar 28, 1989 . The product is useful as a pigment in the coating or filling of paper. . Inventors, Rasik H. Raythatha, E. Wayne Andrews . about 12.5 weight % of a 40% active aqueous sodium silicate is used based on the weight of dry clay.drying of sodium sili e coated kaolin,Patent US5035951 - Fire resistant coatings - Google PatentsJul 30, 1991 . c) kaolin, said kaolin serving to improve the thermal resistance of said coating; . The water-soluble alkali metal silicate, i.e., sodium silicate, .. which is stable at the coating and drying temperatures of the intumescent coating. .. The coating passed test ASTM E-84 (24 foot tunnel test) with a flame spread.
drying of sodium sili e coated kaolin