Particle coating device

A particle coating device comprising:

• a container having a powder supply port that supplies a powder;
• a first rotation introducer that is provided below the powder supply port and passes through an inner side and an outer side of the container;
• a second rotation introducer that is provided below the first rotation introducer and passes through the inner side and the outer side of the container;
• a first magnet roller that is provided inside the container, is coupled with the first rotation introducer, and generates a magnetic field;
• a second magnet roller that is provided inside the container, is coupled with the second rotation introducer, and generates a magnetic field;
• a first drive unit that drives the first rotation introducer and rotates the first magnet roller;
• a second drive unit that drives the second rotation introducer and rotates the second magnet roller;
• a control unit that controls an operation of the first drive unit and an operation of the second drive unit;
• and
• a film forming unit that supplies a coating material for coating particles in the powder into the container, wherein a product r1ω12 of a rotation radius r1 and a square of a rotation speed ω1 per unit time of the first magnet roller is larger than a product r2ω22 of a rotation radius r2 and a square of a rotation speed ω2 per unit time of the second magnet roller.