To provide a crystallization apparatus capable of easily obtaining crystals mutually aligned in crystallographic axis direction.
Introducing pipe 3 from an evaporation part 1 is introduced into the lower part at the center part of the container 2a of a crystallization part 2 to communicate with the container 2a and connected to the evaporation part 1 from the side wall of the container 2a by a return pipe 4. A supply pipe 5 of a raw material solution is connected to the intermediate part of the return pipe so as to communication with the return pipe 4 and a magnetic force generation means 6 comprising an electromagnet is provided to the outer side wall of the container 2a. The raw material solution is allowed to flow in the evaporation part 1 through the supply pipe 5 and the return pipe 4 to flow in the crystallization part 2 through the introducing pipe 3 while it is evaporated. The raw material solution becomes a supersaturation state in the crystallization part 2 to obtain crystals grown and formed by the magnetic field action of the magnetic force generation means 6 so as to be mutually aligned in crystallographic axis direction.
SHIMIZU KENJI
OGAWA KAORU
SATAKE CHEM EQUIP MFG
| JP2000516527A | 2000-12-12 |
| WO1998037938A1 | 1998-09-03 |