FIELD: mining, chemical, metallurgical and some other branches of industry for beneficiation of stock and its cleaning from surface impurities. SUBSTANCE: gear has hydrocyclone, intake facility, cleaning chamber in the form of mixing chamber, jet-type pump built-in intake facility for tangential injection of stock into cylindrical part of hydrocyclone, tertiary treatment chamber. The latter comes in the form of ring chamber linked by branch pipe of tangential inlet to mixing chamber positioned in cylindrical part of hydrocyclone and is formed by circular partition separating cylindrical part of hydrocyclone from its conical part and by branch pipe placed concentric on drain branch pipe of hydrocyclone. EFFECT: raised efficiency of cleaning and separation of mineral stock, simplified design of gear. 1 dwg
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