Method of producing atomized powder and method of manufacturing magnetic core

A method of producing an atomized powder, the method comprising:

• an atomizing step of forming magnetic alloy particles from a molten metal by an atomizing method, to obtain a slurry in which the magnetic alloy particles are dispersed in an aqueous dispersion medium;
• a slurry concentration step of causing magnetic separation means to separate the magnetic alloy particles from the slurry to form a concentrated slurry having the magnetic alloy particles of more than 80% by mass, the magnetic separation means using a rotary drum including a magnetic circuit part fixedly disposed at a position where at least a part of the magnetic circuit part is immersed in the slurry and an outer sleeve capable of rotating outside the magnetic circuit part;
• a drying step of causing drying means using an air flow dryer to dry the concentrated slurry to form a magnetic alloy powder;
• and
• a concentrated slurry storage step is provided between the slurry concentration step and the drying step, and the concentrated slurry is stirred.