... .Easy to maintain Sand Washer 1. Features of Screw Sand Washing Machine. Long life of bearing.. Little loss for medium-sized or fine sand and stone ... , mine, building material, transportation, chemical industry, water and electricity, concrete mixer and so on. 3. Technical parameters of Screw sand washing machine ModelXSD2212XSD2612XSD2812XSD3015XSD3215XSD3615Impeller ...