Technological concentration of mineral admixtures in the fine fraction of quartz powder upon grinding

With the use of a natural impurity - albite - a qualitative picture of the enrichment of the fine fraction of quartz sand in the grinding process has been experimentally established. It is shown that in terms of optical and structural characteristics, glass melted from a fine fraction of sand is inferior to glass obtained from a coarse fraction. Il. 3, bibliography: 5 titles.