| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for preventing sticking to a wall surface and improving a particle size distribution or the like by a simple method without using complicated equipment in a crystallization apparatus. SOLUTION: A crystal reflux apparatus for separating or condensing and refluxing crystals in generated slurry of the crystallization apparatus is installed, a part or all of the generated slurry extracted from a crystallization tank is introduced to the crystal reflux apparatus, and the crystal in the slurry or condensed slurry is crystallized while being refluxed to the crystallization tank. COPYRIGHT: (C)2011,JPO&INPIT
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