New methods that improve quality of quartz concentrate are offered for cleaning quartz from mineral impurities and gas-liquid inclusions, considering physical, chemical and genetic properties of natural quartz of different deposits.

The processing chain for making high-purity quartz concentrate is featured by cold decrepitation of gas-liquid inclusions in the microwave field, agglomeration cleaning of quartz grains, with flotation excluded from the processing cycle. The cost of final product is reduced owing to the decrease in energy and labor expenditures.