Melting bath used for melting optical glass comprises a modular structure having a basin as base module and further thermally active modules

摘要

Melting bath comprises a modular structure having a basin (1) with a low melt volume in the region of 0.25 m3 as base module and further thermally active modules. Preferred Features: The basin consists of a monolith made from ceramic refractory material in contact with a base (3). Plates (2) made from ceramic refractory material are mounted on the side walls and on the base of the basin to provide thermal insulation. One of the basin or plates consists of an insulating housing module (4, 5). The basin is electrically heated or heated by fossil fuel. The housing module is a metal housing filled with ceramic refractory granules.