GLASS FURNACE, IN PARTICULAR FOR CLEAR OR ULTRA-CLEAR GLASS, WITH A REDUCTION IN THE PRIMARY RECIRCULATION

摘要

The invention relates to a glass furnace for heating and melting materials to be vitrified, in which two loops (B1, B2) for recirculating molten glass are formed in the bath between a hotter central area (I) of the furnace and the entrance and exit at a lower temperature, respectively. The furnace comprises a means (X) for slowing the flow of molten glass in the primary recirculation loop (B1).