Patent ID: 7223013
Filing Date: 2007-05-29
Classification: B01F

Abstract:
1. First in first out hydration tank with a stationary outside tank wall, a stationary central inlet tube provided centrally within said outside tank wall, a vessel wall provided between said central inlet tube and said outside tank wall so that liquid flows in a downward direction within said inlet tube and then in an upward direction between said inlet tube and said vessel wall and then again in a downward direction between the vessel wall and the outside tank wall before exiting through an exit provided at the bottom of the outside tank wall wherein the improvement comprises: means for mixing a liquid in a direction that is normal to a direction of flow of the liquid as the liquid passes between an inlet and an exit of a first in first out hydration tank, wherein the means for mixing a liquid in a direction that is normal to a direction of flow of the liquid as the liquid passes between an inlet and an exit of a first in first out hydration tank further comprises: horizontally extending vanes provided on an outside tank wall and a central inlet tube that interleaf in spaced apart relationship with vanes provided on a rotating vessel wall located between the central inlet tube and the outside tank wall.