Method for making glass raw materials

摘要

Process for obtaining alkali (e.g. sodium or potassium) and/or alkaline earth (e.g. magnesium or calcium) and/or rare earth (e.g. cerium) silicates by conversion of halides to sulfates (1), then reaction with silica (2), the thermal energy being provided by a combustion reaction using one or more immersed burners. An independent claim is also included for the use of the process to obtain vitrifiable materials.