Fine sand recovery

The bulk material is evenly fed through a feeding box onto the coil. Following the force of gravity it runs downwards on the bottom of the coil. By the main flow and the cross flow the particles are separated according to their specific density. This wet-mechanical gravity preparation is also known as gravimetric density sorting. Lighter particles accumulate in the outer region of the flow. Heavier ones are transported to the separator axis of the coil. At its end the material is divided into heavy, middle and fine material by an adjustable separator.