Study on the Recovery of Gold from the Cyanide Solutions with Weakly Basic Anion Exchange Fiber as Sorbent

Abstract

The recovery of gold from the cyanide solution with weakly basic anion exchange fiber as sorbent was studied. The effects of different recovery parameters on gold recovery efficiency were studied in detail. The anion exchange fiber was packed into a PTFE cartridge and the gold can be absorbed on this cartridge when the cyanide solution passed through the cartridge. The absorbed gold was eluted from the cartridge with 2.0 mol L^-1 nitric acid solution as eluant. By this procedure, an enrichment factor above 500 was achieved and the routine ion do not interfered with the gold recovery. The absorption capacity was calculated to be 52 mg g^-1 for the gold standard solution and 46 mg g^-1 for the industrial gold cyanide leaching solution. This method can be applied to the recovery of gold from cyanide solution with good results.