The most widely used medium, and most compatible with the fluidized bed process, is fused aluminum oxide grains. The fluidized bed process consists of utilizing a high temperature chamber that directs gas through a distributor plate creating a desired atmosphere that serves as a means of bed levitation. When the force of the gas is equal to the weight of the media, a fluidized state is reached. The process extends work life in precision tools, aircraft, automotive and other transportation components.

Today, fluidized beds are being use in applications such as wire annealing and biomass gasification and solid waste pyrolysis. In biomass and waste pyrolysis applications, brown aluminum oxide provides excellent attrition resistance and aluminum content has the potential to provide catalytic benefit from its alumina content.

Additionally, Washington Mills produces, DURALUM HC, specifically for fluidized bed process. In post-grain manufacturing, the material is calcined to remove adhering dust.