An Experimental Study of Fragmentation by High Velocity Impacts on a Target And by Air Jet Milling

This final report covers research funded by IFPRI arising out of a French national research effort on fine grinding. Three relatively independent teams were involved in separate projects which were to be combined to give an overall view of fine grinding in air jet mills. The teams are : Pierre Guigon (Compiegne) Individual High Velocity Particle Impacts. Alain Thomas, succeeded by Marie-Noelle Pons (Nancy), Morphological Description of Debris. John Dodds (Nancy then Albi) Modelling Fine Grinding Processes.. Whilst much progress has been made in each of the separate investigations the ambitious objective of combining the three projects has not been fully achieved.