re-processing gold tailings in south africa
historic gold tailings dams in the witwatersrand area of south africa is being investigated. the objective is to recover uranium and residual gold from the tailings as well as to oxidize the sulphides to eliminate long term environmental liabilities associated with acid mine drainage. the tailings from the re-processing plant will be re-
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.
las lagunas gold tailings project - mining technology
las lagunas gold tailings is a retreatment project involving the reprocessing of previously unrecovered gold and silver refractory tailings from the pueblo viejo mine. the project is situated 100km north-west of santo domingo the capital city of dominican republic in the caribbean. the project is
reprocessing gold tailings by gravity methods
tailings originating from the gravity concentration of a gold ore containing about 14 g/t au have been treated by various beneficiation methods. these tailings have been screened on the 147 and 74 micron sieves and the two coarsest fractions have been separated on shaking tables with unsatisfactory results but the concentrates have been examined in polished sections for mineragraphic analysis.
gold tailings: hazards and opportunities inn
tailings from gold mining operations can pose a threat to the environment and health of nearby communities. not only can this waste be harmful if it leaches into groundwater but it can also mean
how to handle mine tailings safely and sustainably
mining involves the processing of mined ore to separate valuable minerals leaving behind huge volumes of waste tailings. driven by mining volumes globally generated tailings are estimated to
from tailings to treasure miners make - advancing mining
drd gold extracted 33600 ounces of gold worth nearly us$40 million in the last quarter of 2013. mintails a mine tailings processor has developed new technology to process 350000 tons of slimes from its extensive tailings resources. it expects to recover 58 kg of gold per month and has enough slimes to last until 2025.
mine tailings - ground truth trekking
mine tailings' size and composition depends on the mining method. for hardrock metal mines tailings are usually a very fine mud or powder which is left over after ore is crushed and valuable minerals are extracted from it. tailings may also contain chemicals used for mineral extraction.
treasure from trash: how mining waste can be mined a
treasure from trash: how mining waste can be mined a second time tailings dumps can be gold mines – literally in some cases. mine tailings reprocessing projects are planned as far