| 摘要 |
PROBLEM TO BE SOLVED: To provide an aggregation control method for controlling a coagulation speed in accordance with the individual situations of a crystal of a manufacturing target.SOLUTION: In a classification layer type crystallizer 100, in which a material to be crystallized and a mother liquid containing the material are fed to a crystallizer 3 so that a seed crystal of the material may grow in the crystallizer 3, a supersaturated mother liquid in an oversaturated state of the mother liquid is fed to the vicinity of the bottom 3a of the crystallizer 3, and the material is fed by setting the supply position in the height direction from the bottom of the crystallizer 3 so that the coagulation speed of the seed crystal is controlled. |
