Preparation of cement using stabilized fibers of metastable calcium silicate
OwnerJorge Millerinventor
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Abstract
A molten reaction product of calcium oxide, silica and aluminum is quickly quenched from a temperature clearly in excess of the .alpha.'-.alpha. inversion in a manner which simultaneously forms stabilized B-phase dicalcium silicate fibers having diameters which do not exceed 15 microns. These fibers are milled into smaller particles which are particularly useful for producing high-strength cement which does not require activation with lime.
Claims12
A method of producing dicalcium silicate virtually entirely in .beta.-phase crystalline form, which comprises:
- (a) quenching a liquid-phase reaction product of calcium oxide, silica and alumina from a temperature in excess of 1,500.degree. C. to a temperature of less than 400.degree. C., whereby the reaction product is solidified, and simultaneously
- (b) forming the reaction product under dry conditions into fibers having diameters which do not exceed 15 microns.
A method of forming high-strength cement which comprises hydrating stabilized .beta.-phase dicalcium silicate fiber having a diameter which does not exceed 15 microns.
Dependencies are inferred from the claim text.