“…The jars were placed on a 248 mm diameter disc. The mass of the balls is approximately 4 g. For a disc rotation speed of 450 rpm and a jar rotation speed of 900 rpm the injected shock power is about 29 W/g and the cumulative shock energy is about 318 J [39]. The shocks between the wall of the jar, the balls and the powder increase the temperature resulting in the formation of aggregates.…”