Abstract: Described is a process for conveying a powdered material from a storage bin to a delivery destination. The process utilizes an air permeation system within a hopper to facilitate the flow of material. Intermittent blasts of high pressure air are used to clean the air permeation nozzles. After the material flows from the hopper, a screw feeder with a variable speed motor is utilized for processing the material. The powdered material is then guided to a flow measurement instrument which measures the flow of the material through the process. The variable speed motor is responsive to the measurements made by the flow measurement instrument. The material is then transferred into a powdered material feeder where it is pulled through the feeder with gravity and negative pressure. The powdered material feeder then moves the material into a rotary airlock where it is deposited into a pneumatic convey airline.