Multotec recently won a tender from Tronox’s Namakwa Sands to replace a trommel at the mine’s Primary Concentration Plant East (PCPE) at its Brand se Baai site on the West Coast.
Greta Mantell, technical sales representative at Multotec Manufacturing, says the scope of supply included the trommel screen, screen panels and ancillary equipment which formed part of the installation at the PCPE.
“What was essential on this particular project was that the new trommel would replicate the exact process functionality of the old unit and provide the same level of operational performance and reliability as the old screen had for the past 12 years,” Greta says.
In this application, the Multotec trommel screen is used to classify East Mine Run-of-Mine (ROM) by size and discharge the oversize to the tailings conveyor. The undersize is processed as normal. Significantly, this screen is the only piece of equipment operating in the ROM processing circuit for which there is no standby or bypass alternative.
Tronox’s PCPE uses sea water for its processes and this, together with operating in the harsh West Coast environment, meant that corrosion protection was a priority on the trommel. It has been supplied with replaceable polyurethane shell protectors as well as a high performance corrosion protection paint on all the non-rubberised surfaces. The trommel screen is fitted with Spalto polyurethane panels selected to ensure optimum throughput and wear life.
With a focus on improving total cost of ownership, Multotec implemented its innovative one-side fitting of screen panels on the trommel, which Greta says will facilitate quicker panel change outs saving on costs.
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