Method for fabricating fine reduced iron powders

A method for fabricating fine reduced iron powders, comprising:

• heating fine iron oxide powders containing over 98 wt percent iron oxides and having a mean particle size of smaller than 20 μm to a reduction temperature of over 700° C. to reduce the fine iron oxide powder in a reducing atmosphere into iron powders that are partially sintered into iron powder agglomerates;
• and
• performing a first crushing-spheroidizing process on the iron powder agglomerates to crush the iron powder agglomerates into first individual iron particles having a rounded shape and a mean particle size of smaller than 20 μm;
• and
• heating the first particles to an annealing temperature of 500-800° C.;
• and
• after the first particles cool to room temperature, performing a second crushing-spheroidizing process on the first particles to crush the first particles and spheroidize the first particles into second particles having a mean particle size of smaller than 20 μm and having a tap density higher than that of the first particles.