An apparatus for refining an inorganic non-metallic melt and process for the production of a glass and / or a glass ceramic

A device for, in particular continuous refining of an inorganic non-metal melt, preferably a glass melt comprising - a refining crucible (3) having an upper surface (3c) and a bottom (3d) which is at least by side walls (10) on an inner side (10b) a metallic liner (50, 52) as the melt contact surface formed, the liner (50, 52) completely provides the melt contact surface of the Lautertiegels (3) and wherein the flow of the melt in the upper region of the Lautertiegels (3) is arranged, - at least one heating device (71, 72) for conductive heating of the liner (50, 52) by a current flow in the liner (50, 52), so that the melt by means of the heated liner (50, 52) can be heated, said heater (71, 72) and the lining (50, 52) are connected to one another via supply lines, wherein - the supply lines, the liner (50, 52) via at least one upper connector (60, 61) and at least one lower connector (62, 63) in such a contact that at least in the liner (50, 52) of the side wall (10) at least in sections, a current flow is generated, which from the top side (3c) to the bottom (3d) or from the bottom (3d) to the upper surface (3c) extends.