Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass
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United States of America Patent
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May 24, 2022
Grant Date -
Dec 27, 2018
app pub date -
Dec 16, 2016
filing date -
Dec 18, 2015
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Abstract
One aspect relates to a process for the preparation of a quartz glass body. The process includes providing a silicon dioxide granulate I prepared from a pyrogenically produced silicon dioxide powder, treating the silicon dioxide granulate I with a reactant at a temperature in a range from 1000 to 1300° C., and making a glass melt out of the silicon dioxide granulate. A quartz glass body is made out of at least a part of the glass melt. Furthermore, one aspect relates to a quartz glass body obtainable by this process. Furthermore, one aspect relates to a light guide, an illuminant, and a formed body, each of which is obtainable by further processing of the quartz glass body. One aspect additionally relates to a process for the preparation of a silicon dioxide granulate II.
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