Dryer while mechanical dewatering of feed slurry is significantly less expensive than thermal drying, this process results in a paste of filer cake that cannot be spray dried and can be difficult to handle in other types of dryers. The Spin Flash dryer, as one option available for continuous powder production from pastes and filter cakes with out the need of grinding. The Spin Flash dryer was developed and introduced in 1970 and is widely used to produce a uniform powder on a continuous basis from highly viscous fluids, filter press wet cake, thick/cohesive paste, sludge, and semi hard lumps-lumpy materials etc. This equipment is ideally suited for such type of applications.