Quartz Processing technology of CFlo strips off physical impurities and gives a relatively uniform and small particle size material for optimum use . Quartz occurs in many varieties and has specific physical, chemical and electric properties which make it highly usable in a wide range of industries and sectors. Quartz sand is a useful raw material for the building and construction industry. Silica sand is extensively used in the manufacture of glass and ceramics and for foundry moulds in metal casting.