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Published on Aug 23, 2011
Fine Material Screw Washers serve three primary functions:
WASH - Removes slimes, silts and clays by allowing the material to roll and tumble upon itself, which causes material on material attrition. The waste particles are absorbed into the water and discharged over the weirs.
DEWATER - By moving material up an inclined box via a spiral screw shaft, free water is allowed to drain away from the material into a drainage trough.
CLASSIFY - Controlling the weir heights provides maximum retention of desirable product while allowing undesirable "fines"to float over the weirs.