METHOD FOR PROCESSING BAUXITE RESIDUE AND PRODUCTION OF GLASS ROCK MATERIAL

摘要

A method is provided for processing bauxite residue. The method includes heating a bauxite residue charge mixture having a mass ratio of silicon dioxide to calcium oxide of about 0.5 to about 0.9 in a reducing atmosphere and melting the charge mixture at a temperature and at a pressure effective to form a metallic melt fraction and a slag melt fraction. The formed metallic melt fraction and the formed slag melt fraction may be separated and the slag melt fraction may be cooled and converted into a glass rock material.