a study on fine grinding process in jet mill - ePrints@USM

LIST OF FIGURES
Figure 1.1 Loss of regularity in the crystalline network
Figure 2.1 Schematic diagram of opposed fluidized bed jet mill
Figure 2.2 Grinding and classifying chamber of opposed fluidized
jet mill
Figure 2.3 Schematic representation of breakage mechanism of
hydrargillite particles in jet mill
Figure 2.4 Fragmentation scheme for gibbsite ground in jet mill
Figure 2.5 Variation of the circularity average values and the
standard deviation
Figure 2.6 Effect of separation distance on the rate of grinding for
target plate jet grinding
Figure 2.7 Effect of separation distance on the rate of grinding for
two opposing nozzles jet grinding
Figure 2.8 Types of nozzles: (a) abrupt nozzles (b) Laval shaped
nozzles
Figure 2.9 Median size of talc production as a function of feed rate
for 7000 rpm (■), 9000 rpm (●), 11000 rpm (▲) and
13000 rpm (▼)
Figure 2.10 Influence of feed rate on product fineness in jet mill
grinding
Figure 2.11 Difference specific surface area created as the function
of the factor P/N 2 for the fluidized bed jet mill
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Figure 2.12 Principle of an impeller air classifier 34
Figure 2.13 Mass held in the mill at different classifier speed: 7000
rpm stable (■), 7000 rpm unsteady (□), 9000 rpm stable
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