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Abstract

A glass powder production process for producing glass powder with a grain size <40 μm includes feeding a fine mill with glass cullet and dry grinding the glass cullet in the fine mill, feeding the crushed glass cullet into an air classifier and air classifying the crushed glass cullet into a fine material fraction and a coarse material fraction, wherein the separation limit of the air classifier is set to a grain size <40 μm, discharging the coarse material fraction from the air separator, preparing the coarse material fraction for refeeding into the fine mill, refeeding the coarse material fraction into the fine mill, outputting the fine material fraction as the end product, the glass powder. The disclosure also relates to a glass powder production device suitable for carrying out the process.

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