Patent ID: 8163175

Claim:
Apparatus for treating lime slurry in a slurry treatment system, comprising: (a) a slurry tank ( 14 , 114 ) for a watery lime slurry having lime particles and grit particles therein; (b) delivering line means ( 16 , 18 , 20 ; 216 , 218 , 220 ) for delivering slurry from the slurry tank to an extraction line ( 24 , 124 ; 19 , 119 ; 29 , 229 ), for extracting a portion of the slurry delivered from the slurry tank; (c) gravity separation means ( 23 , 123 , 32 ; 123 , 132 ) for removing some grit from the lime slurry while allowing other grit to remain; wherein said means for removing is free of any means for adding dilution water to the gravity separation means ( 23 , 32 ; 123 , 132 ); (d) conduit means ( 21 , 122 ) substantially continuously delivering slurry taken from the slurry tank to the gravity separation means; and (e) recirculation means ( 40 , 140 ) for continuously recirculating the rest of the slurry to the slurry tank after separation of some of the grit from the slurry.