METHOD OF MILLING THE POWDER FROM PLASTIC MATERIAL Russian patent published in 2017 - IPC B22F9/04 B02C17/00 B02C19/16 

FIELD: metallurgy.

SUBSTANCE: to grind the powder, the original iron-containing material is treated in the mill. The mill is loaded with ground raw iron-containing material and working bodies. The working bodies are made in the form of steel balls. Preliminarily, the initial powder and steel balls with a diameter of 6-22 mm in a ratio of 10:1, respectively. Fill with liquid nitrogen with the addition of ethyl alcohol. Place the vibrating mill in the chamber. Seal and create a vacuum of 1 kgf/cm². Fill the chamber with argon gas and grind for 1-4 hours, followed by analysis of the particle size.

EFFECT: invention simplifies the process and increases the grinding effect.

2 cl, 8 dwg