Bleaching of kaolins and clays by chlorination of iron and
8/1/2006· Fig. 1 shows a calculation of the equilibrium composition as a function of temperature and in excess of chlorine. Using the method of system energy minimization, calculations were performed from 1 mol of Al 2 O 3 ⁎2SiO 2 (product of kaolinite dehydroxylation), 1 mol of TiO 2 and 1 mol of Fe 2 O composition differs from the experimental one, but is more useful for visualizing the