Feedrate deviations caused by hopper refill of loss-in-weight feeders

Continuous powder processing requires accurate and consistent feed streams of the raw materials which makes loss-in-weight feeders invaluable. Periodic hopper refill of the feeders, which is needed for continuous operation, can lead to inconsistent and poor feeding performance. This paper presents both a method for measuring the feeding performance during hopper refill as well as several methods for quantifying the resultant deviations from...