QUARTZ GLASS MADE FROM PYROGENIC SILICON DIOXIDE GRANULATE HAVING LOW OH, CL, AND AL CONTENT

One aspect relates to a process for the preparation of a quartz glass body, including providing a silicon dioxide granulate composed of a pyrogenic silicon dioxide powder, making a glass melt out of the silicon dioxide granulate and making a quartz glass body out of at least part of the glass melt....

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Bibliographic Details
Main Authors HEINZ FABIAN, Heinz, KAYSER, Thomas, HOFMANN, Achim, HÜNERMANN, Michael, OTTER, Matthias
Format Patent
LanguageEnglish
French
German
Published 24.10.2018
Subjects
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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Summary:One aspect relates to a process for the preparation of a quartz glass body, including providing a silicon dioxide granulate composed of a pyrogenic silicon dioxide powder, making a glass melt out of the silicon dioxide granulate and making a quartz glass body out of at least part of the glass melt. The quartz glass body has an OH content of less than 10 ppm, a chlorine content of less than 60 ppm and an aluminium content of less than 200 ppb. One aspect also relates to a quartz glass body which is obtainable by this process. Furthermore, one aspect relates to a formed body and a structure, each of which is obtainable by further processing of the quartz glass body.
Bibliography:Application Number: EP20160815836