Carbon of alumina - the high purity, ultra-fine, continuous production process of aluminum nitride by nitriding

摘要

A process for the manufacture of high purity, ultra-fine aluminium nitride powder by the carbo-nitridisation of alumina. Agglomerates uniform in both size, chemical composition and porosity are formed containing a stoichiometric mixture of alumina and carbon with the addition of a small amount of catalyst. The agglomerates are furnaced in a controlled manner in a well-mixed reaction vessel to achieve a uniform and consistent level of conversion. Milling of the as-reacted agglomerates under a controlled at mosphere will produce high purity, micron sized aluminium nitride powder.