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.Itismainlyusedforgrindingcircuitpre-gradingandinspectiongradingandwashingwork.Itsmainadvantageissimplestructure,reliable,easytooperateandmainlyusedforthegrindingmachinewiththediameterlessthan3.6mintheclosedmechanismconstituted.
Accordingtodifferentaxis,thespiralclassifierisdividedintothesingleanddoublespiralclassifier,andaccordingtoweirheightcanbedividedintothehighweirtypeandlowweirandsinking.Thehighweirclassifierisgenerallyusedforcoarsegrading,gradingoverflowitssizelimitisgreaterthan0.15mm.Sinkingclassifierisgenerallyusedfinegrading,gradingoverflowsizelimitislessthan0.15mm.Thelowweirclassifierusuallydoesnotuseforclassifyworkbutmainlyfororesandmudwashingoff.