METHOD FOR PRODUCING IRON POWDER FROM LUBRICATION OIL Russian patent published in 2017 - IPC C10M175/02 B03C1/00 B22F9/00 C23G5/00 

FIELD: metallurgy.

SUBSTANCE: method involves heating the lubricating oil, which contains dispersion iron powder particles up to a temperature of 65-90°C and subsequent magnetic separation by feeding the heated lubricating oil to the magnetic separator in the opposite direction to the magnet rotation, followed by separation and collection of dispersion iron powder particles coated with an oil film. The dispersion particles are washed with a 3-8% aqueous solution of industrial detergent heated up to 80-90°C for 15-20 minutes at constant stirring, left to stand for 30-40 minutes, washed with hot water at a temperature of 80-90°C and dried at a temperature of 90-110°C to obtain an iron powder in the form of dispersion particles.

EFFECT: method provides a reduction in the energy intensity of the process, reducing the labour intensity of the process of obtaining iron powder.

2 ex