From Tailings to Treasure? Miners Make Money Reprocessing
DRD Gold, one of the first South African companies to abandon traditional mining to focus on extracting gold from tailings. New technology allows it to recover up to 40% of the gold left in particle form in tailings.
New approaches for extracting and recovering metals from mine
May 15, 2017 · Mine tailings may contain base transition metals, such as iron, copper, nickel and zinc, in relatively high concentrations, and also occasionally precious metals such as gold and silver, in minerals (and native metals) that have been not been separated by froth flotation (e.g. Bryan et al., 2006, Ahmadi et al., 2015).
Carmen Falagán, Barry M. Grail, D. Barrie Johnson 71 2017Inquire Now
Tailings - Wikipedia
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
After extracting the gold, wet tailings resembling silt will be a byproduct of the milling process. A containment dam, engineered to withstand environmental events and changes typical of Alaska, will be built to house the tailings.
Extracting Gold from Copper Tailings - Gold Refining Forum.com
We have some copper tailings in large quantity and as per the analysis there is roughly 29 grams per ton of Gold and some other metals such as Iridium, Platinum and Palladium. Can anyone suggest what would be the best method of extracting the gold, iridium, platinum and palladium separately from the entire lot?
Gold Extraction from Tailings Star Trace has been providing a standard technique for extracting the mineral contents from the mining tailings. Star Trace will start the process by sample testing through the mineral content of the tailings.