METHOD AND DEVICE TO FABRICATE PELLETS Russian patent published in 2012 - IPC B01J2/16 B01J8/18 

FIELD: process engineering.

SUBSTANCE: invention relates to method and devices for making pellets of crystalline salts. At least, one injection zone is created in fluid bed and, at least, one pelletising zone. Pellets are extracted from one pelletising zone to separated them into three fractions. Fraction of preset size pellets is directed to processing to target product pellets. Fraction with pellets with size exceeding preset one is removed from pelletising process. Fraction with size under preset one is directed into feeder flow of germ particles to cause heat exchange from fluidisation zone in classifier. Proposed method is implemented in pelletiser comprising reactor 10 with fluid bed formed above air distribution grating 11 when fluidising air 17 is forced through grating 11. Pelletiser reactor represents vertical rectangular cross-section column converging to funnel at its top section, said funnel making fluidised air outlet. Separation web 18 divides pelletiser reactor into injection section 12 and pelletising section 13. Pelletising section houses classifier 21 including seat of heat exchanger tubes 20.

EFFECT: pelletising by spraying, higher efficiency and quality.

10 cl, 6 dwg, 4 tbl