... are two same vibration motor to be fixed on vertical screw slot. And they corotate by a contrary direction ... reciprocating motion by the throwing direction. Then the the vertical screw slot will begin to continuous vibrating. Then the ... Machine, Magnetic Separator, Shaking Table, Spiral Classifier, Thickener, Filter, Drier, Rotary Kiln, Sand Washer, Sand Production Line, Metal Processing Equipment ...