The plant needed to dry a fine, (3-5 micron), high energy oxidizer containing 1.5-2% moisture down to propellant grade «0.1 % moisture). The objective was to achieve discrete particles with minimum dusting, using a continuous drying process. Most attempts using standard approaches resulted in troublesome agglomerates.Traditionally, oxidizer products have been tray dried in batches. The tray dryer is a gentle way of handling material. Aerojet tried many alternatives before deciding on the Wyssmont dryer. The Wyssmont vertical rotary tray dryer simulated a tray-drying operation while also being a continuous process. The drying equipment selected also had to be safe for handling a potentially explosive material.

Join for free to read