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Comment Separation Processes

These ‘imprinted’ resin beads selectively recover gold from leaching processes

By Gerald Ondrey |

In early April, 6th Wave Innovations Corp. (Salt Lake City, Utah; www.6wic.com) and CyPlus GmbH (Hanau-Wolfgang, Germany; www.cyplus.com) signed a sales and marketing representative agreement for IXOS nanotech gold extraction resin for the mining industry. CyPlus will represent 6th Wave in Europe, Mexico, Turkey and Egypt. 6th Wave estimates that its molecularly imprinted polymer IXOS resin can increase gold mining profits by approximately $100 per ounce in process savings and extra gold recovered in direct comparison and as a replacement for activated carbon, the most widely used extraction medium today. The patented IXOS resins are “imprinted” at the molecular level to selectively attract gold and ignore the other elements from cyanide leach solutions in mining operations. Unlike conventional ion-exchange resins, the IXOS resin has a long life (more than 50 loading/unloading cycles), and high capacity (~30 g/kg) and selectivity for gold (over 95%). The unloading (elution) process is simple, straightforward and inexpensive when compared to activated carbon. The beads require no activation step for re-use. The resin is supplied ready-to-use, with a range of particle sizes available to accommodate heap leach and resin-in-leach/pulp…
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