Skull pot for melting or refining inorganic substances, especially glasses and glass ceramics

US6889527B1 · kind B1 · utility

Assignee

• Schott Glas · DE

Inventors

• Hildegard Römer · Karben, DE
• Uwe Kolberg · Mainz, DE
• Guido Räke · Bingen, DE

Key dates

• Filing date: Aug 16, 2000
• Grant date: May 10, 2005
• Expiry date: Aug 19, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03B2211/71
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a skull pot (1) for melting, crystallizing or refining inorganic substances. Said pot comprises a pot wall (1.1), a pot bottom (1.2), an induction coil (2) which surrounds the pot wall (1.1) and by means of which high-frequency energy can be coupled into the content of the pot. The pot wall (1.1) is formed by a ring of metal pipes which can be connected to a cooling medium. Slits are embodied between adjacent metal pipes. The bottom (1.2) is provided with a discharge for the melt (3). A sleeve (4) is allocated to the discharge. The admission end (4.1) of the sleeve (4) protrudes far into the inner chamber of the skull pot (1) in such a way that, during use, the melt (3) can be withdrawn through the crystallized bottom layer (3.3) in a controlled manner without the danger of impairing quality.