An apparatus and Method for mixing a Liquid containing particles includes a vessel for containing a liquid and an axial impeller that rotates around a vertical axis substantially

摘要

An apparatus and Method for mixing a Liquid containing particles includes a container for containing liquid and an axial impeller that rotates around a vertical axis substantially. The impeller is adapted to dive Beneath the surface of the liquid by a distance approximately one quarter to half the depth of the liquid.The impeller is geared up to produce (a) an internal region of Upward Flow, located along the vertical axis of the container, (b) a Transitional region above the impeller flow in which the Fluid Moves radially outwards, Towards the walls of the recipient And (c), and an outer region of downward Flow located along the walls.The impeller rotates at a Variable Speed, so that the flow is capable of dragging Solid Particles that have a Speed of Settlement about 1 Foot (30.5 cm) per minute in the liquid, and the speed of the impeller is chosen to allow particles with a Speed D Settlement desired to settle at the bottom of the container.