Spherical secondary particle of calcium silicate and preparation thereof
专利汇可以提供Spherical secondary particle of calcium silicate and preparation thereof专利检索，专利查询，专利分析的服务。并且PURPOSE: To prepare spherical secondary particles of calcium silicate consisting essentially of tobermorite, by slurrying a milk of lime, and crystalline silicic acid raw material and water, and subjecting the resultant mixture to the hydrothermal synthetic reaction by stirring under pressure and heating.
CONSTITUTION: A milk of lime having ≥5ml sedimentation velocity and silicic acid consisting essentially of a crystal material as a main component are mixed with water in an amount of 15 times or more based on the solid substance to form a raw material slurry, which is then subjected to the hydrothermal synthetic reaction in a reaction vessel equipped with a stirrer at ≥5kg/cm
2 saturated steam pressure under pressure at 180W190°C with stirring. Thus, secondary particles of calcium silicate consisting essentially of hollow spherical tobermorite crystals having 10W120μm outside diameter, ≤100mg breaking load, ≤30% of hollowness and ≤0.12g/cm
3 density of molded articles prepared from naturally settled particles are obtained.
COPYRIGHT: (C)1983,JPO&Japio，下面是Spherical secondary particle of calcium silicate and preparation thereof专利的具体信息内容。
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