Patent ID: 6494612
Filing Date: 2002-12-17
Classification: B01F

Abstract:
A blending apparatus comprising:blending vessel having an axis of symmetry and at all points along the axis of symmetry having a racetrack-shaped cross section in a plane perpendicular to the axis of symmetry, said racetrack-shaped cross section consisting of two opposed semicircles, spaced, and with their concave sides facing each other, the ends of the semicircles joined by parallel straight line segments, said blending vessel extending downward from an upper end to a lower end; and means for rotating said blending vessel about an approximately horizontal axis, the rotating means operably attached to said blending vessel, wherein the major axis of the racetrack-shaped cross sections of said blending vessel is oriented in a different direction from the direction of said approximately horizontal axis about which said blending vessel is rotated.