Preparation of quartz glass bodies from silicon dioxide granulate

US11492285B2 · kind B2 · utility

Assignee

• HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

• Matthias Otter · Hamm, DE
• Walter Lehmann · Leipzig, DE
• Michael Hünermann · Alzenau, DE
• Nils Christian Nielsen · Göllheim, DE
• Mirko Wittrin · Serbitz, DE
• Markus Wilde · Vöhringen, DE

Key dates

• Filing date: Dec 16, 2016
• Grant date: Nov 8, 2022
• Expiry date: Jan 21, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/57
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

One aspect relates to a process for the preparation of a quartz glass body including, providing a silicon dioxide granulate obtainable from a silicon dioxide powder, wherein the silicon dioxide granulate has a larger particle size than the silicon dioxide powder, making a 5 glass melt out of silicon dioxide granulate and making a quartz glass body out of at least part of the glass melt. The melting crucible has at least one inlet and at least one outlet. A least part of the glass melt is removed via the melting crucible outlet. One aspect further relates to a quartz glass body which is obtainable by this process. One aspect further relates to a light guide, an illuminant and a formed body, which are each obtainable by further processing 10 of the quartz glass body.