Crystallizer and method of crystallization

A crystallizer comprising:

• a turning gear comprising,
• first shafts,
• a first rotator coupled to the first shafts,
• a drive unit rotating the first rotator about an axial center of the first shafts,
• second shafts provided on the first rotator, the second shafts having an axial center oriented to a direction perpendicular to the direction of the axial center of the first shafts,
• a second rotator coupled to the second shafts, and
• a driving force transmission system comprising,
• a first disc rotating about the axial center of the first shafts relative to the first rotator, the first disc having its disc face oriented to a direction perpendicular to the first shafts, and
• a second disc coupled to one of the second shafts, the second disc having its disc face oriented to a direction perpendicular to the second shafts, wherein a contact between the first disc and the second disc transmits a turning force of the first rotator which is rotated by the drive unit to cause the second rotator to rotate about the axial center of the second shafts;
• a spherical container;
• and
• a container supporting unit supporting the spherical container within the second rotator in a manner that a rotation center of the turning gear which is composed of the axial center of the first shafts and the axial center of the second shafts corresponds to a center of the spherical container.