Bulk material: Aluminium hydrate, known to be a very abrasive material
Equipment: Existing metering valve used to discharge alumina into a pneumatic conveying system at a rate of 1 to 20 t/h. The valve operates via a onical plug moving up or down, thus changing the annular opening size and controlling the material discharge.
Challenge: Feeding into the conveying system is unreliable, leading to process interruptions. This problem has existed for 20 years.