recovering gold from zinc

extract gold from scrap by zinc - advisorpublications. Recovery of high purity precious metals from printed circuit boards. ... toluene was used to extract gold ... the zinc, nickel, gold and silver wires were ... Lead and Zinc Smelting - IFC Lead and Zinc Smelting ... gold and silver are removed by adding zinc. extract gold from scrap by zinc - advisorpublications. Recovery of high purity precious metals from printed circuit boards. ... toluene was used to extract gold ... the zinc, nickel, gold and silver wires were ... Lead and Zinc Smelting - IFC Lead and Zinc Smelting ... gold and silver are removed by adding zinc. US4385038A - Flotation recovery of lead, silver and gold ... A process is disclosed for the recovery of lead, silver and gold from the iron-bearing residue of an electrolytic zinc process by froth-flotating a slurry of the iron-bearing residue in the presence of a sulfidic collector agent in order to froth-flotate the sulfides and to separate them from the iron-bearing residue. Zinc: Later-Cycle Demand Drivers Should Be Supportive ... Demand growth momentum for zinc has peaked and mine supply is beginning to recover, albeit from depressed levels. Zinc spot prices of greater than $2,700 per ton are returning to peak levels ...    Read More