Method and device for producing glass products from a glass melt

A method for the melting of glasses, continuously or in batches, comprising:

• inputting a first melting charge for a first glass composition into a crucible;
• melting the first melting charge in a first glass melt already present in the crucible by heating the first melting charge and the first glass melt with an electromagnetic field generated by an induction coil;
• conducting a cooling fluid through cooling channels to, simultaneously with the melting, cool a side wall of the crucible so that a skull layer of the first glass melt is maintained on the side wall;
• drawing the first glass melt continuously out of the crucible, wherein the side wall has an interior having at least a part to which the skull layer adheres formed by an aluminum nitride-containing ceramic;
• cooling the first glass melt until the first glass melt detaches from the interior of the side wall;
• removing the cooled first glass melt;
• pouring in a second melting charge for a second glass composition into the crucible;
• melting a region of the second melting charge;
• coupling-in electromagnetic energy into the region of the second melting charge by an induction coil to further melt remaining regions of the second melting charge thereby forming a second glass melt;
• conducting the cooling fluid through cooling channels to, simultaneously with the melting, cool the side wall of the crucible so that a skull layer of the second glass melt is maintained on the side wall;
• and
• inputting additional second melting charge continuously or in batches while discharging the second glass melts continuously.