FIELD: optical and glass making industries; manufacture of building materials; mining industry. SUBSTANCE: proposed device has at least two chambers mounted in one axis; these chambers have axial holes; device is provided with two collectors between which chambers are located; each chamber is connected with each collector by means of branch pipes tangentially entering the chamber; chambers are located on above other at spaced relation; outer ends of chamber are provided with axial holes for intake of gases fraction; ends of chamber directed to clearance between them are provided with axial holes for discharge of material after treatment. EFFECT: enhanced efficiency of treatment due to break of complex minerals and increase of quartz component. 3 dwg
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