At the same time Ajax also delivered designs for a hopper and flow insert to prevent ‘ratholing’ and to help achieve mass flow in a hopper containing the phosphate powder. Undertaking powder testing allowed the company to determine the hopper wall inclination needed for phosphate powder mass flow, to increase the mean residence time of the hopper contents, and enhance de-aeration. Ajax recommended replacement of the bottom section of the hopper, and designed the above-mentioned hopper insert to promote flow. Meanwhile the twin screw feeder’s extraction geometry ensures material is drawn from the full width and length of the new hopper outlet. www.ajax.co.uk 

 

 

The feeder awaiting despatch at the Ajax factory and (below) parallel arrangement of the twin screws