The Simple cycloning circuit consists of pumping mud just once through cyclon. In MODEL&CO simple cycloning Desanders, separation is made in 2 phases. In the first phase, mud is pumped to a primary screen where solids larger than 2 mm are directly removed by vibration. In the secondary phase, the mud from primary phase is pumped through cyclon where the separation of sand of grain size smaller than 2 mm is done. Sand out of cyclon is poured in a dewatering screen, where the excess of humidity is removed ending up in a dry sand product.