An Innovated Tower-fluidized Bed Prilling Process

Cooling-solidification of sprayed droplets is one of major methods for prilling of melt. Traditionally, this is carried out in an empty tower, and the equipment requirement for producing larger particles is very high, resulting in not only significant cost increasing but also difficulties in transporting melt etc. Based on analysis and simulation, a new prilling process is developed for the melt prilling, which combines a tower with a fluidized bed so that the height of equipment is greatly decreased, and it exhibits satisfactory performance in industrial application. Mathematical model for tower prilling, its simulated results, the structure of the equipment for the innovated prilling process and its application are addressed.