METHOD FOR PRODUCING CLEAR GLASS OR CLEAR DRAWN GLASS BY UTILIZING A SPECIAL REFINING PROCESS

摘要

A method to produce a clear glass or a clear drawn glass includes the steps of melting starting materials to obtain a glass batch melt, refining the obtained glass batch melt, homogenizing the obtained glass batch melt, and producing a glass product in the drawing process. A sulfate refining agent, selected from an alkali-, alkaline earth- or zinc sulfate or mixtures thereof is utilized in a predetermined amount and a predefined refining temperature during refining of the glass batch melt which is 0° C. to 100° C. higher than that in a refining process using a refining system which contains antimony oxide on its own or in combination with one or several other refining agents.