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METHOD FOR THE PRODUCTION OF OPAQUE QUARTZ GLASS, SIO2 GRANULATE SUITABLE FOR USE IN PERFORMING THE METHOD AND A COMPONENT MADE OF OPAQUE QUARTZ GLASS
METHOD FOR THE PRODUCTION OF OPAQUE QUARTZ GLASS, SIO2 GRANULATE SUITABLE FOR USE IN PERFORMING THE METHOD AND A COMPONENT MADE OF OPAQUE QUARTZ GLASS
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机译:不透明石英玻璃的生产方法,适合用于执行该方法的SiO 2颗粒和不透明石英玻璃的成分
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摘要
In a known process for the production of opaque quartz glass a blank is formed from synthetic SiO2 granulate and is heated at a vitrification temperature to form a body of opaque quartz glass. In order to provide on this basis a process for the production of pure opaque quartz glass with a homogenous pore distribution, high density, high viscosity and a low tendency to devitrify, it is proposed according to the invention that the SiO2 granulate to be used is a SiO2 granulate (21; 31) composed of at least partially porous agglomerates of SiO2 primary particles, with a specific BET surface ranging from 1.5 m2/g to 40 m2/g and an apparent density of at least 0.8 g/cm3. A SiO2 granulate (21; 31) suitable for the implementation of the process is distinguished in that it is formed from at least partially porous agglomerates of SiO2 primary particles and in that it has a specific BET surface ranging from 1.5 m2/g to 40 m2/g and an apparent density of at least 0.6 g/cm3.
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