2019 Volume 56 Issue 1 Pages 15-20
When we measure the size of granulated particles in rolling fluid granulation equipment, we usually measure average size-distribution of them using laser or other optic devices. But now, it is needed measuring the thickness of the liquid-coating on particles more accurately to decide conditions of the granulation more precisely. Here we developed a method to observe directly the particles and its coating in rolling fluid granulation equipment. First, we developed the technique obtaining liquid-coated particles directly from rolling fluid granulation equipment and removing atmosphere-derived moisture. After that all of the liquid on the particles is sublimated. Comparing the size of the particles before and after the sublimation, we obtained the thickness of the liquid-coating on the particles.
