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Methods for producing alumina from clay :an evaluation of five hydrochloric acid processes
Methods for producing alumina from clay :an evaluation of three sulfuric acid processes
Methods for producing alumina from clay :an evaluation of a potassium alum process
Methods for producing alumina from clay :an evaluation of a nitric acid process
Methods for producing alumina from clay :an evaluation of two ammonium alum processes
Methods for producing alumina from anorthosite :an evaluation of a lime-soda sinter process
Methods for producing alumina from clay :an evaluation of a sulfurous acid-sulfuric acid process