Gold recovery from synthetic mine tailings leachate
Recovery of gold from mining tailings is important economically and environmentally in the mining industry. With a limited amount of mineable gold remaining, the process of recovering gold from mine tailings needs development.
Material composition and diagnostic leaching tests of gold mine
Tajikistan possesses large reserves of dump tailings characterized by a high gold content. The formation of these dump tailings is associated with the low cost of gold in the past, since rich ores with a gold content above 6–8 g/t were more often involved in processing. At recovery of ≈ 70–75%, tailings with a gold content below 1.8 g/t were …
Heavy Metal Speciation by Tessier Sequential Extraction
The Bétaré Oya gold district is situated in the Lom Basin, one of Cameroon's Neoproterozoic volcano-sedimentary basins. The aim of this study was to evaluate the speciation, bioavailability and potential risk of metals in mine tailing of Bétaré Oya gold district. The metal content of the mine tailing samples collected is evaluated using an …
(PDF) Phytoextraction of gold and copper from mine tailings …
Phytoextraction of gold and copper from mine tailings with Helianthus annuus L. and Kalanchoe serrata L ... with a gold price of over US$ 1500 an ounce in 2011, gold phytomining is being seriously considered as an economically viable and environmentally sustainable technology to recover gold from areas of waste land, especially in arid and …
A practice of ultra-fine tailings disposal as filling material in …
A practice of cemented backfill technology with ultra-fine tailings in a gold mine was comprehensively presented, and a series of tests were conducted in accordance with the peculiar properties of ultra-fine tailings and the mining technology conditions.
An Assessment of Radiological Hazards from Gold Mine Tailings …
Radiological hazards associated with exposure to Naturally Occurring Radionuclides Materials from gold mine tailings in the province of Gauteng in South Africa were evaluated. A comparison was made with soil samples from a …
Tailings of two cities: Juneau and Treadwell
The Alaska-Juneau Mine opened in 1897. By its close in 1944 due to manpower shortages, it had produced over $80 million in gold – 11 times the purchase price paid to Russia for Alaska in 1867. At current gold prices, the mines would be multi-billion dollar companies today.
(PDF) Gold Mine Tailings: A Potential Source of Silica
Gold Mine Tailings: A Potential Source of Silica Sand for Glass Making. May 2020; Minerals 2020(Reutilization and Valorization of Mine Waste and is available online):448 ... All content in this ...
Mogale Gold tailings storage facilities, South Africa – update
The effective price at which the group sold the 3 617 kg of gold, representing about 30% of annual group 200 000 oz production, over the 24 months, is R1 135 …
Microstructure and mechanical behavior of cemented gold/tungsten mine
The most important point that distinguishes the present study from the above-given studies is that it has the characteristics of the backfills obtained from gold/tungsten mine tailings as mining waste, and it reveals the microstructure and mechanical behavior of these mine backfills in different rock contents and gradation. 4. Conclusions
EnviroGold to reprocess Hellyer Gold Mine tailings
EnviroGold Global Ltd has agreed to commercial terms with Hellyer Gold Mines Pty Ltd to reprocess the tailings owned by HGM at the Hellyer Gold Mine, Tasmania, Australia.
Tailings Management – OceanaGold
Downstream TSFs are constructed with a single embankment (wall) formed with waste rock to create engineered embankments that are progressively raised to provide additional space for tailings storage. We utilise the downstream method at the Waihi Gold Mine, Macraes Operations, Haile Gold Mine, the Didipio Mine and Junctions Reef.
(PDF) Reprocessing of Gango Gold Mine Tailings …
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: …
Mine tailings: reprocess, recover & recycle
Metal prices were also much lower. Metals that weren't recovered were sent to storage along with tailings. This means that the grade of metals residing in legacy tailings is, in some cases, very high… High enough to make their potential recovery economically attractive when metal prices are right. Reprocess tailings. Really? Yes, …
Process effluents and mine tailings: sources, effects and
Soil and water quality degradation by current and abandoned mine tailings is a common environmental issue. There are various processes in management of mine tailings such as minimizing tailings production and increasing tailings reuse, adoption of a risk-based approach and considering relevant economic, environmental and social aspects.
Tailings potential: recovering metals from mine waste streams
Experts believe mine tailings could provide a new source of metals and minerals critical to the energy transition, while also cleaning up the environment.
Tailings potential: recovering metals from mine waste streams
Experts believe mine tailings could provide a new source of metals and minerals that are critical to the energy transition, while also cleaning up the environment.
Old Mine Tailings: New Mother Lode For Rare Elements
Some mine tailings in the U.S. have already been re-worked--for gold: Starting in the 1980s, technological advances, coupled with the rising price of gold, made it both possible and profitable for mining companies to extract microscopic gold from …
Desulfurization of aged gold-bearing mine tailings
For this study, a sample of tailings from an abandoned gold mine was collected. Initial characterizations confirmed that the material was non-acid generating due to its high dolomite content. It also showed surface oxidation on the particles and a gold content of 3.82 g/t.
Experimental analysis on cyanide removal of gold tailings
The cyanide content of gold tailings exceeds the standard seriously due to the cyanide extraction process. In order to improve the resource utilization efficiency of gold tailings, a medium ...
An underexploited invisible gold resource in the Archean
The tailings dumps originating from gold mining in South Africa's Witwatersrand still contain notable gold endowments. Most tailings reprocessing operations target a native gold fraction using ...
Phytomining for Artisanal Gold Mine Tailings Management
Mine tailings are generally disposed of by artisanal and small scale gold miners in poorly constructed containment areas and this leads to environmental risk. Gold phytomining could be a possible option for tailings management at artisanal and small-scale gold mining (ASGM) locations where plants accumulate residual gold in their above ground …
Biocrusts significantly affect the bioavailability and
Aims Biocrusts are important living covers in ecologically fragile regions that intercept metals entering the soil and indicate heavy metal contamination. This study explored the potential of biocrusts as a novel approach for remediating heavy metal pollution in mining areas. We also investigated the capacity of biocrusts to enrich or …
(PDF) The composition and state of gold tailings
All content in this area was uploaded by Nico Vermeulen on Aug 25, 2017 ... Theron, 2004 into the behaviour of gold mine tailings have showed that the behaviour of some gold tailings is similar to ...
Barrick launches tailings reprocessing project at closed US gold mine
Mining firm Barrick has commissioned the tailings reprocessing project at the shuttered Golden Sunlight Mine in Montana, US.
MANAGEMENT OF TAILINGS: PAST, PRESENT AND …
hence change in tailings management for the mining industry as a whole will be generational. For context, this chapter first describes conventional tailings management, arguing that applying NPV ... but at the price of increasing operational and capital costs, and unintended cumulative detrimental impacts over time, and ever-increasing closure ...
Mogale Gold tailings storage facilities, South Africa – update
This content is only available to subscribers. ... Name of the Project Mogale Gold tailings storage facilities ... The true price of poor maintenance in mining operations.
CHAPTER II MINE TAILINGS 4 FACILITIES: OVERVIEW 3 2 …
Mine tailings are currently an unavoidable waste product of mining. There has been an increase in the volume of tailings produced for many mineral commodities, due to …
From Tailings to Treasure? A New Mother Lode
It expects to recover 58 kg of gold per month, and has enough slimes to last until 2025. Goldfields has also developed new technology for a tailings retreatment …
Old Mine Tailings: New Mother Lode For Rare Elements
Some mine tailings in the U.S. have already been re-worked--for gold: Starting in the 1980s, technological advances, coupled with the rising price of gold, made it both possible and profitable for ...
Chemical Leaching of Inactive Gold Mine Tailings as a
Tailings from inactive gold mines, that are not yet successfully restored (generation of As- and Co-contaminated neutral mine drainage), represent a promising secondary source of strategic metals including Co and Ni. Three different mine tailings (sites A, B and C)...
Kainantu Mine: High-Grade Gold Production | K92 Mining Inc.
Explore Kainantu Mine's high-grade gold and copper production, pivotal in K92 Mining's growth strategy and investor appeal.
Treasure from trash: how mining waste can be mined a …
Elsewhere in Tasmania, a similar project is under way to recover gold, and another is proposed to recover tin from mine tailings. Overseas, mine tailings reprocessing projects are planned as far ...
Effect of microbial-induced calcite precipitation on shear
Mine tailings are often considered problematic materials because of their loose depositional fabric and susceptibility to static and cyclic liquefaction failures. Yet, they are often stored behind tailings' dams in a highly saturated state, posing significant environmental, social, and economical hazards. This study examines the application of a …
Current situation and prospects for the clean utilization of gold tailings
Lin et al. (2023) analyzed gold tailings obtained from the Wa State Gold Mine Group (Myanmar) using atomic absorption spectrometry (AAS) and XRF. Their results showed that the gold content in the sample gold tailings was 10 g/t, and iron, silica, and alumina account for 33 %, 11 %, and 4 %, respectively.
Current situation and prospects for the clean utilization of …
This paper describes the mineralogical properties of gold tailings, including chemical composition, phase composition, particle size distribution, and microstructure; …