PREPARATION OF SILICATE OR GLASS IN A FURNACE WITH BURNERS IMMERSED IN A REDUCING MEDIUM

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The invention relates to a method for the preparation of silicates of an element, selected from amongst the alkaline, alkaline earth or rare earth elements, comprising a reaction between silica and the sulphate of said element in a reactor provided with at least one burner immersed in a fused mass, said immersed burner being supplied with a gas comprising oxygen, whereby an excess of reducing fuel is introduced into the reactor with relation to the oxygen effectively consumed. The method permits the satisfactory execution of the method at a relatively low temperature. © KIPO & WIPO 2007