Method of and device for the continuous manufacture of elongate bodies starting from unmolten solid starting material.

摘要

A method of and a device for the continuous melting in particular of glass (11) by means of a high-frequency electromagnetic field in a melting tube (1) in which the field is coupled in the melt (11) by means of a coil (5) which is present within the cooling jacket (5) surrounding the melting tube (1). An earthed screen (6) and a tube (13) of insulating material are present between the wall of the melting tube (1) and the coil (5). The melt traverses (11) a heating zone and a refining zone and a solid elongate body is withdrawn from the bottom of the tube (1).