... in the driving gullet revolves periodically, so that the sand, gravel and slag particles are mixed, overturned, washed in the ... following advantages when it is applied to washing sand in the sand and gravel plants: a. Little of washed-away medium ... , Spiral Chute, Spiral Classifier, Thickener, Filter, Drier, Rotary Kiln, Sand Washer, Screw ore washer, Sand-making Production Line, Stone production line, ...