C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 7/44 (2006.01) B01J 2/02 (2006.01) C04B 5/00 (2006.01) C04B 7/36 (2006.01) C04B 7/47 (2006.01) C04B 7/48 (2006.01) C21B 3/06 (2006.01)
Patent
CA 2073170
ABSTRACT The spherical hydraulic material of the invention is a hydraulic powder composed mainly of CaO, SiO2, Al2O3 and Fe2O3 wherein the powder melted and smoothed at least on surfaces thereof and then cooled, and the powder has a size of not larger than 500 µm and an average circularity of not smaller than 0.7. The hydraulic material may be produced by melting a starting material composed mainly of CaO, SiO, Al2O3 and Fe2O3, and scattering solidifying the melt or may be produced by melting-cooling and solidifying at least surfaces thereof. Alternatively, the powder may be produced by mixing a dried, calcined or sintered product or a melt of a starting material composed mainly of at least one of CaO, SiO2, A12O3 and Fe2O3 with a hot material such as an iron slag which is in the form of a melt or has a temperature of not lower than 500°C, scattering the melt, and cooling and solidifying the scattered melt. The spherical constituent material of the invention is in the form of spherical fine particles which are smooth and close to a spherical form, so that the fluidity and the strength developability of a mixture with water are very excellent. -27-
Asakura Etsuro
Fujisawa Hiroyuki
Fukata Yasuhiro
Hattori Ken-Ichi
Hattori Ken-Ichi
Mitsubishi Materials Corporation
Robic
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