METHOD FOR PRODUCING ANTIFRICTION AND ANTI-WEAR ADDITIVES TO LUBRICANTS Russian patent published in 1994 - IPC

FIELD: production of lubricants. SUBSTANCE: proposed additives are prepared by separate grinding each of powder fillers followed by affection with electromagnetic field within 8-12 s. Mentioned above grinding takes place in ejector mills at rate 200-300 m/s at pressure 8-12 atm and 170-230 C. The process takes place in the medium of superheated steam. Then separate mixing with dispersant at mass ratio 1:2 is carried out. Thus prepared products are separately proposed in vibration mills within 2 h at frequency 40-60 Hz and temperature 58-62 C, combined and mixed with lubricant oil. The latter process takes place in mixer at 80-120 Hz and 58-62 C. Thus prepared mixture is then filtered. EFFECT: improves efficiency of the method. 4 dwg, 1 tbl