The results of studies of impurities in the quartz-feldspar sand, their impact on the quality of the glass. It was found that the impurity minerals do not form a «stone» as a part of container glass and other gaseous inclusions, but causes intense color, which can be reduced by enriching the sand magnetic separation method. This sand can be used in a batch painted glass and glass ceramics.
silica sand, minerals-impurities, the glass composition, concentration, magnetic separation
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