Pamp;Q University Lesson 9 Washing amp; Classifying : Pit amp; Quarry
Sep 10, 2015#0183;#32;The larger, heavier sand particles drop out first, followed by the progressively smaller sand particles, while the lighter silt particles are carried off in the flow of water. The water and silt are then pumped out of the classifying tank and through a clarifier where the silt settles to the bottom and is removed.