South West Metallurgical Services based near Penzance Cornwall(UK) design, manufacture and supply Spiral Concentrators to the coal, mineral and environmental industries.

They were looking for a hand-mixable cast polyurethane, Shore A 86, for the high wear components of their Spiral Concentrator.
Spiral wear components are required to withstand a continuous flow of highly aggressive slurries 24 hours a day, seven days a week, over many years of service.

SWMS are using high-performance NOTEDOME Neuthane 801NG – A quasi PTMEG polyether-based MDI system for their Spiral Concentrators.

Rob Davies of SWMS says “we are using the Neuthane 801 NG system with the CAT044 catalyst and find that at 35 – 40°C material temperature and 75 – 80°C mould temperature we can pour any of our moulds (from 0.5kg up to 4kg), and get the required physical properties”.

Pot life is 8 – 12 min and demould time about 50 minutes – increasing the material temperature from 30°C has helped with mixing, de-gassing and pouring”.

Rob added – “We are very pleased with how the Neuthane 801NG system has worked and its resistance to the aggressive slurries.”