Patent ID: 6689207
Filing Date: 2004-02-10
Classification: C04B

Abstract:
An alumina cement mixture comprising:a mixture of alumina oxide Al2O3, â€”Aâ€”, and lime CaO, â€”Câ€”, wherein, the concentration d3 in alumina Al2O3, â€”Aâ€” and the concentration d4 in lime CaO, â€”Câ€” in the mixture are such that d3/d4 ranges between 1.15 and 1.40, and a size distribution of the mixture, represented in a Rosin Rammier diagram, has a gradient ranging between 0.75 and 0.90, wherein the concentration d3 represents the percentage by weight of Al2O3 in the intial mixture, and the concentration d4 represents the percentage by weight of CaO in the initial mixture.