Preparation of an opaque quartz glass body

US11236002B2 · kind B2 · utility

Assignee

• HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

• Matthias Otter · Hamm, DE
• Michael Hünermann · Alzenau, DE
• Nils Christian Nielsen · Göllheim, DE
• Frank Wessely · Dieburg, DE
• Andreas Schreiber · Birstein, DE
• Björn Roos · Stockholm, SE
• Gerrit Scheich · Seligenstadt, DE

Key dates

• Filing date: Dec 16, 2016
• Grant date: Feb 1, 2022
• Expiry date: Jan 10, 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. The process includes providing a silicon dioxide granulate from a pyrogenically produced silicon dioxide powder, making a glass melt out of silicon dioxide granulate, and making a quartz glass body out of at least part of the glass melt. The size of the quartz glass body is reduced to obtain a quartz glass grain. The quartz glass body is processed to make a preform and an opaque quartz glass body is made from the preform. One aspect further relates to an opaque quartz glass body which is obtainable by this process. One aspect further relates to a reactor and an arrangement, which are each obtainable by further processing of the opaque quartz glass body.