Calcium silicate and process for producing same

摘要: Abstract of the disclosure Globular secondary particles wollastonite group calcium silicate crystals represented by formula ?CaO?mSiO2?nH2O wherein 1 ? 6, m 6 and 0 n 1, characterized in that comprise hollow globular crystals, having an average spontaneous sedimentation height at least 800 ml, outside diameter 5 to 110 µm, apparent density 0.04 0.09 g/cm3 shell defined equation Y = 0.0033X + B is density, X particles, a constant, 15 µm 40 0.115.