Patent ID: 8365555
Filing Date: 2013-02-05
Classification: C03B,C03C

Abstract:
1. A process of producing glass in a metallic skull crucible comprising a melt crucible ( 13 ), a fining vessel ( 14 ) connected to the melt crucible ( 13 ) to receive the glass melt from the melt crucible ( 13 ), a means for heating the glass melt in the fining vessel inductively with a high-frequency electromagnetic alternating field, a means for conducting at least one oxidizing agent into the fining vessel, wherein the fining vessel each comprise walls, which are cooled by a cooling agent and which are provided with high-frequency permeable slits, said process comprising the steps of: a) melting a glass batch in the melt crucible to form a glass melt, b) conveying the glass melt to the fining vessel, c) fining the glass melt in the fining vessel at a fining temperature higher than a temperature of the glass melt in the melt vessel, wherein during the fining said at least one oxidizing agent is conducted into the glass melt in the fining vessel so that reduction of reduction-sensitive components in the glass melt is avoided or reduced, and wherein the glass melt in the fining vessel are heated inductively by the means for heating the melt crucible and the fining vessel inductively with a high-frequency electromagnetic alternating field.