METHOD OF DRY CONCENTRATION OF KAOLIN Russian patent published in 2002 - IPC

FIELD: concentration of kaolin and other non-metal-ore materials. SUBSTANCE: proposed methods includes drying, grinding, three-stage separation, deposition and dust accumulation operations. Kaolin of low grade after last third stage of separation, kaolins of medium grade after deposition of fine products obtained at first and third stages of separation and high-grade kaolin are obtained after dust accumulation at the same stages of separation and additionally after dust accumulation is aspiration air purification line. EFFECT: facilitated technology of dry concentration of kaolin. 1 dwg