— The most effective extraction of copper (84 to >90%) was achieved by bioleaching the tailings at 45 °C, using a defined microbial consortium, where elemental …

 — DRD Gold extracted 33,600 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 350,000 tons of …

 — Historically, safe containment has been the main goal of tailings management. Disposal has taken place in sizable surface impoundments that are enclosed by dams or embankments, as well as in subterranean workings and unnatural depressions [10], [11].However, the environment and communities are seriously endangered by the …

 — Very small diamonds can be recovered from the residue of the original diamond-bearing ore, and the U.S. Geological Survey found that discarded mine tailings may yield significant amounts of rare earth …

 — The facility now reprocesses gold tailings from the Golden Sunlight mills. The focus is on removing and concentrating sulphur (iron pyrite) to be sold to, and used in …

 — The countries that currently have gold mining and mine tailings generation are: South Africa, United States, Mexico, Russia, Peru, China and ... allowing the exploration of old pillars of the underground mine, avoiding the storage of mine tailings abroad on the surface with large dams of containment, and considerably reducing the …

 — The growing demand for rare earth elements (REE) driven by their applications in modern technologies has caused the need to search for alternative sources of these elements as their extraction from traditional deposits is limited. A potential source of light rare earth elements (LREE) may be the monazite present in the mining waste …

 — Gold mining is a major source of metal and metalloid emissions into the environment. Studies were carried out in Krugersdorp, South Africa, to evaluate the ecological and human health risks associated with exposure to metals and metalloids in mine tailings contaminated soils. Concentrations of arsenic (As), cadmium (Cd), …

 — The Mazowe Gold Mine is managed by Metallon Gold (Zimbabwe) and is situated in the west-central part of the Harare greenstone belt. ... construction and commissioning of the 60,000 tonnes per month plant at Mazowe mine in 2014 for the processing of old tailings dump from previous operations at Mazowe mine. ... process …

 — The gold ore from sulfide minerals is, in general, ore dressed by means of nine stages among which stand out flotation and cyanidation. The residues of these steps, containing potentially toxic elements, such as As, Cd, Cr, Mn, Zn and Pb disposed of tailings dams, which might be a source of environmental contamination if not suitably …

 — With advent of novel technologies, mining companies are now figuring out ways to extract valuable metals from tailings. In gold, copper sulfide and iron ore tailings, the potential of extracting minerals is an opportunity. Reprocessing tailings to collect the valuable minerals can be a cost-effective approach compared to processing material.

 — Elikhulu exploits the 200 Mt of gold tailings accumulated over 70 years of mining at the Evander Gold Mining Operation. The retreatment plant can produce up to 65 000 oz of gold per year (oz/y), and it has mineral …

composition of mine tailings generated during the extraction of gold show close features with those frequently used raw materials in glassmaking processes [33,34]. The various environmental issues resulting from gold mine tailings had called for several scientific investigations to resolve the environmental burden that emanates from mine tailings.

By reprocessing waste rock and tailings to extract gold left behind during the initial mining process, we effectively reduce our environmental footprint while rehabilitating our tailings dams. Tailings are processed at Pan African's two state-of-the-art tailings treatment plants, at Elikhulu and BTRP, which processed 13,093,574 t and 958,106 ...

 — According to Blight, South Africa's gold mining industry produced 7.4 × 10 5 t of tailings from 1997 to 2006. In Brazil, it is estimated that 3.8 M oz. of gold can be found in old tailings dam(s) operated from 1834 to 1982.

MINE TAILINGS FACILITIES: OVERVIEW AND INDUSTRY TRENDS Elaine Baker*, ... than 8 billion tonnes of tailings were produced from the extraction of metals and minerals (Figure 3). The largest volume of tailings, 46 per cent, is produced ... Gold 21% Iron 9% Coal 8% Phosphate 4% Lead – zinc 3% Nickel 2% Platinum Group Elements 1%

 — A carbonaceous-argillaceous slate (CAS) sample (2.17 g/t gold), prepared from the Orenburg region, Russia, and a pyrite sample (1.15 g/t gold) obtained from the tailings of a sulfide copper-zinc ore flotation plant in the Sverdlovsk region of Russia were examined by Daibova et al. (2019) to extract gold using microbial leaching. Two different ...

 — Several efforts are underway to extract gold and copper from tailings. Reprocessing mine tailings may also have environmental benefits. A recent project described in Mining.com is a series of experiments carried out by an international group of scientists to produce approximately 30 years of passive carbonation of mine tailings …

 — There is a need to define mine tailings in a clear, precise, multidisciplinary, transdisciplinary, and holistic manner, considering not only geotechnical and hydraulic concepts but also integrating environmental …

 — In 2022, her company Nibeenabe piloted its device for remediation and attenuation of multiple pollutants (DRAM) technology to filter the tailings from a Madre de Dios mine extracting commodities that …

 — Akcil A (2002a) Cyanide control in tailings pond: Ovacik gold mine, Turkey. ... Edinger E (2012) Gold mining and submarine tailings disposal: Review and case study. Oceanography 25: 184–199. Crossref. Google Scholar. Egekeze JO, Oehme FW (1979) Direct potentiometric method for the determination of cyanide in biological materials.

What are tAILingS Put simply, tailings are ground up rock minus the gold. Rocks mined from underground which contain gold are called ore. Processing involves crushing the ore into sand to liberate and recover the gold. What's left over is called tailings. Approximately 95% of the tailings are generated from gravity separation methods, which are […]

 — The physico-chemical characteristics of the Gango gold mine tailings and the economic feasibility of reprocessing it was investigated. Characterization was made in two categories of tailings: the ...

 — Extraction of valuable metals from tailings dumps (or residues or low grade stockpiles) traditionally regarded as waste, has long been researched by metallurgists. A number of developments in mineral processing technology have combined to make the retreatment of numerous tailings dumps a profitable

 — It is essential to the extraction of metals, and can be very expensive to source, treat and recycle or replace. Water is also difficult to keep in a closed loop, and the loss of water and, potentially, minerals contained within it as solids (tailings) or in solution (acid mine drainage) can be very dangerous indeed.

 — The reprocessing of wastes and old tailings with moderate to low content of gold offers not only a business opportunity, but also enhances the quality of the …

 — This paper describes the mineralogical properties of gold tailings, including chemical composition, phase composition, particle size distribution, and microstructure; …

 — Recently, Ubaldini investigated the use of thiosulphate for Au extraction using mine tailings from Ribita and Criscior . A gold extraction of 75% after leaching and a recovery of 90% Au after purification (adsorption–desorption–electrodeposition cycle) …

 — The gold mining industries are among the largest consumers of cyanide due to its high affinity with gold. After the precious metal has been extracted from ore, cyanides are discharged as effluents and as solid mine tailings. Cyanides are highly toxic and their toxicity is related to their physicochemical speciation.

 — The registry is expected to be updated as new mine tailings facilities are opened and old abandoned tailing deposits are discovered. ... Solvent extraction to recover REEs from mine tailings of gold and tellurium mining (Tunsu et al., 2019).-Use of solvent impregnated resins ...