This all reduces capital cost. Delkor Technik, through project manager Hatch, is to supply an ISEP continuous ion exchange plant to Chambishi Metals in Zambia. The system, which is marketed in Africa under license from the Calgon Carbon Corp. of the US, will be used to remove nickel from the cobalt electrolyte stream. According to Delkor's managing director Craig Naude, ISEP was selected owing to the significant savings in resin investory and the substantial reductions in wash volumes that it offers. Mr Naude says that the system is unique because a patented distributor valve allows nickel to be simultaneously extracted during the adsorbtion, rinsing and regenerating stages.
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