Patent ID: 8673226
Filing Date: 2014-03-18
Classification: B01D,B01F,B01J,C04B

Abstract:
1. In a lime hydrating apparatus having: an elongated, horizontally disposed, enclosed mixing vessel having a cover, an inlet at one end for feeding quicklime and water thereto to form mixture, and a discharge at another end for removal of hydrated lime formed therein; the improvement comprising: a pair of spaced, adjacent, parallel rotatable shafts disposed within the mixing vessel along a longitudinal axis of the mixing vessel, the shafts rotatable in opposite directions, wherein each shaft has a plurality of outwardly extending sets of blades thereon, with a first set of spaced blades extending coaxially with the longitudinal axis of each shaft, with adjacent blades of the first set of blades circumferentially offset from each other by about 90 degrees, and an adjacent second set of blades extending at an angle to the longitudinal axis of each shaft, with adjacent blades of the second set of blades inclined in an opposite direction relative to an adjacent blade, the blades arranged so as to toss the mixture upwardly into a space between the shafts and towards the cover, while forming hydrated lime that is moved toward and removed from the discharge.