Pneumatic conveying of abrasive bulk solids at Anglesey Aluminium Metals Limited: four case studies

This paper explains and compares four different technologies used for piped pneumatic transportation of hulk materials within the aluminium smelter at Holyhead, North Wales, and gives guidance for the selection of future syst ems. The differences in system design and operation are surveyed, the relat ive advantages and disadvantages identified in practical operation are disc ussed, and the energy consumptions of the different systems are compared. I n addition, comparisons are made to the alternatives, i.e. mechanical conve ying systems. Finally, conclusions are drawn as to what lessons may be lear ned in regard to choosing, operating and maintaining a system for the conve ying of abrasive materials.