Mill, especially for grinding quartz glass, comprises quartz glass tube with transparent or translucent surface layer on its inner side

摘要

The grinding vessel (1) for holding the material to be ground comprises a quartz glass tube (4) with a wall thickness of at least 10 mm. The inside of the tube is provided with a transparent or translucent surface layer (3) having a thickness of at least 1 mm and a density of at least 2 g/cm3>.