Clarification conversion manner and clarification conversion device null of slaked lime

摘要

PROBLEM TO BE SOLVED: To provide a method for obtaining an aqueous clarified slaked lime solution from an aqueous slaked lime solution with rough quality by a simple means and to provide an apparatus for the method. ;SOLUTION: This method for clarifying an aqueous slaked lime solution is carried out by introducing an aqueous slaked lime solution with rough quality, which is produced by dissolving slaked lime in a concentration not higher than the saturated concentration and contains non-slaked lime substances contained in the dissolved slaked lime as undissolved substances, into a first region formed by partitioning, keeping the aqueous slaked lime solution with rough quality in the first region for a prescribed duration while generating convection of the liquid flow of the aqueous slaked lime solution with rough quality by bringing the solution into collision with a static object to be hit, and flocculating the undissolved substances in the aqueous slaked lime solution with rough quality and after that, introducing the resultant aqueous slaked lime solution with rough quality into a second region partitioned separately from the first region, and precipitating and separating the flocculated undissolved substances from the aqueous slaked lime solution with rough quality to give a clarified aqueous slaked lime solution.;COPYRIGHT: (C)1999,JPO