It was shown in one of our recent works  that, the apparently disconnected items like solid-gas flow phenomenon, duct wear and particle degradation are in fact beautifully connected involving all the three components of transfer processes- heat transfer, mass transfer and momentum transfer. This paper which basically is an extension of our work on Fluid Energy Mill  aims at predicting duct wear while transporting solids-gas mixture in pneumatic conveyor even in most difficult situations like flow through bends under interference situation. The paper elaborates the methodology used for wear prediction and highlights the effect of several parameters like material flow rate etc. on the nature and extent of the duct wear. Copyright © 2005 by ASME.