Advanced Ceramic Materials - Aluminium oxide preparation
Monday, April 20th, 2009Alkaline Furnace Process
Bauxite is finely ground and mixed with alkali or alkaline earth carbonates and sintered to produce aluminate. By calcining ammonium alum at about 1200oC high purity alumina powder is prepared. While heating, the alum melts and forms a viscous liquid. On further heating water is expelled, ammonia and sulphur trioxide are removed […]
