CIRCULATION TYPE CRYSTALLIZER FOR LIQUID TO BE TREATED

摘要

PROBLEM TO BE SOLVED: To provide a circulation type crystallizer for forming crystals from a liquid to be treated capable of largely growing crystals while preventing the yield of fine crystal nuclei and the abrasion, crushing or the like of crystals and capable of reducing fine crystals.;SOLUTION: This circulation type crystallizer is equipped with a crystallizing tank 1 into which the liquid P to be treated is supplied, the draft tube 2 provided in the crystallizing tank 1 and rotary blades 3 and 4 provided to the inside and outside of the draft tube 2. A bottom material 20 is formed so as to be inclined downwardly from its peripheral end part 21 to a predetermined region 22 and inclined upwardly from the predetermined region 22 to its center part 23.;COPYRIGHT: (C)2004,JPO