[Optimatization of pellet preparation is CF-granulator with factorial design].

Lithium carbonate-containing pellets were made in a laboratory-scale centrifugal granulator in order to investigate the effects of the process parameters (rotor rotation speed, slit airflow rate and spray air rate) on the pellet shape and size distribution. The size distribution and the shape parameters (roundness, roughness, rectangularity and sphericity) of the pellets were measured, and an optimization parameter was then calculated from these shape parameters. The experiment was carried out and evaluated according to a 2(3) full factorial design.