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Articles on Mine tailings The Conversation

Aug 17, 2020 Articles on Mine tailings. Displaying all articles. Brazilians mourning after a mine disaster. Lucas Landau/AAP August 17, 2020 World-first mining standard must protect people and hold

Mine Tailings groundtruthtrekking

Mine tailings are the ore waste of mines, and are typically a mud-like material. Worldwide, the storage and handling of tailings is a major environmental issue. Many tailings are toxic and must be kept perpetualy isolated from the environment. Scale of tailings production is immense, since metal extraction is usually only ounces or pounds, for

Mine tailings: How to effectively manage the risk

Aug 19, 2020 An open pit mine in sub-Saharan Africa is operating in a jurisdiction where relations are tense, there is artisanal mining and water is always an issue. The tailings dam seems sound for the moment but may become an issue in the years to come. Communities live downstream from both the pit and tailings dam, and allegations of pollution are routine.

Disposal of mine tailings via geopolymerization

Oct 21, 2020 Geopolymer production by using mine tailings as a precursor is a promising solution for their comprehensive utilization; numerous articles have focused on this topic in the last few decades. Thus, in-depth analysis and a summary of these previous works are needed and the key points to investigate in the future should be outlined.

Leaching of heavy metals from abandoned mine tailings

Dec 10, 2019 The dynamic leaching of heavy metals from mine tailings and their subsequent transport in soils were investigated in two coupled up-flow columns (), according to Method 1314 of the USEPA (USEPA, 2013).Specifically, column I was used to investigate the release behaviors of heavy metals from the mine tailing by infiltrating rainwater, while column II was used to study the migration of heavy

Alkali activation as new option for gold mine tailings

Jun 20, 2018 Table 2 presents the main elements of the raw materials and the physical properties of the mine tailings used. Mine tailings are fine-grained materials with a mean particle size of around 49 μm and consist mainly of SiO 2, Al 2 O 3, and CaO.In addition, a significant amount of iron, around 10%, and a high level of sulphur content were detected (), confirming the presence of the crystalline

VV Reduction by Polaromonas spp. in Vanadium Mine Tailings

Vanadium (V) is an important metal with critical industrial and medical applications. Elevated V contamination, however, can be a threat to the environment and human health. Microorganisms can reduce the more toxic and mobile VV to the less toxic and immobile VIV, which could be a detoxification and energy metabolism strategy adopted by V-reducing bacteria (VRB). The limited understanding of

From Tailings to Treasure? Miners Make Money Reprocessing

An article appearing on ABC News, Old Mine Tailings: New Mother Lode for Rare Elements, reported findings from the U.S. Geological Survey indicating that discarded mine tailings may yield significant amounts of rare earth elements; modern extraction techniques would now permit their recovery.

Articles on Mine tailings The Conversation

Aug 17, 2020 Articles on Mine tailings. Displaying all articles. Brazilians mourning after a mine disaster. Lucas Landau/AAP August 17, 2020 World-first mining standard must protect people and hold

JV Article: New standard strives to improve safety and

Nov 30, 2020 “The most recent and dramatic illustration of a tailings dam failing was in January last year at Vale’s (NYSE: VALE) Corrego do Feijao iron ore mine in Brazil, which, to date, has killed over

Mine tailings: How to effectively manage the risk

Aug 19, 2020 An open pit mine in sub-Saharan Africa is operating in a jurisdiction where relations are tense, there is artisanal mining and water is always an issue. The tailings dam seems sound for the moment but may become an issue in the years to come. Communities live downstream from both the pit and tailings dam, and allegations of pollution are routine.

Tailings dam failures: an interesting perspective article

May 13, 2019 Tailings dam failures: an interesting perspective article in Science. Late last week the journal Science published a very interesting Perspective article (Santamarina et al. 2019) on tailings dam failures.. The gist of the article is summarised in this part of the conclusion:

Minerals Free Full-Text Gold Mine Tailings: A

Mining of minerals such as gold, copper, and platinum has been one of several activities sustaining the economy of South Africa. However, the mining sector has contributed significantly to environmental contamination through the improper disposal of mine tailings which covers vast areas of land. Therefore, this study utilised a vitrification process to manufacture glass from gold mine tailings.

Mine tailings and their environmental legacy Sudbury Star

Oct 14, 2020 Mine tailings pose a number of risks including dam failure, leaching and wildlife exposure. These risks can impose serious consequences to aquatic environments and have detrimental effects on many wildlife species. In 2008, approximately 1600 ducks died after landing on bitumen polluted tailings

Process effluents and mine tailings: sources, effects and

Dec 19, 2016 Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are

Environmental Risks From Mine Tailings

Aug 10, 2018 Learn what mine tailings piles and tailing ponds are, and the environmental risks they are associated with. Menu. Home. Sustainability for All. 20,000 Articles on Everything Green. Search.

Treasure from trash: how mining waste can be mined a

Jun 28, 2016 Overseas, mine tailings reprocessing projects are planned as far afield as South Africa and Bolivia. With technology improving just as the mining sector’s economic fortunes dip,

From Tailings to Treasure? Miners Make Money Reprocessing

An article appearing on ABC News, Old Mine Tailings: New Mother Lode for Rare Elements, reported findings from the U.S. Geological Survey indicating that discarded mine tailings may yield significant amounts of rare earth elements; modern extraction techniques would now permit their recovery.

Depth-related variability in viral communities in highly

Jun 09, 2020 Physicochemical stratification of mine tailings. Both tailings cores showed steep vertical gradients of physicochemical properties (Fig. 1). pH values shifted from extremely acidic at the surface layers to near neutral at the deeper layers, while electronic conductivity (EC) declined with depth along the vertical profiles.Both total organic carbon (TOC) and total phosphorus (TP) exhibited an

JV Article: New standard strives to improve safety and

Nov 09, 2020 The Global Tailings Review (GTR) released the first-ever Global Standard on Tailings Management in August. The standard aims to strengthen current best practices around the management of tailings dams in the mining industry, with the goal of zero harm to people and the environment.

Phosphate Mine Tailings Case Study Environmental XPRT

Article Phosphate Mine Tailings Case Study. THE CHALLENGE A typical phosphate mining operation can produce between 180,000 and 225,000 gallons per minute of fine phosphatic clay tailings. This material has a solids concentration of between 2% and

Chronic trace metals effects of mine tailings on estuarine

Aug 28, 2019 Mine tailing disasters have occurred worldwide and contemporary release of tailings of large proportions raise concerns of the chronic impacts that trace metals may have on the aquatic biodiversity. Environmental metabarcoding (eDNA) offers an as yet poorly explored opportunity for biological monitoring of impacted aquatic ecosystems from mine tailings and contaminated

PhotoSat mine tailings dam volume and history studies FMDRCZ

The thickness and volume of tailings in the Mufulira tailings dam, Zambia, as measured by March 23, 2020 WorldView satellite stereo photos and September 22, 1967 declassified US Keyhole spy satellite stereo photos All aspects of mine tailings facilities are now under intense scrutiny The global reaction to the Brumadinho tailings dam disaster in January

JV Article: New standard strives to improve safety and

Nov 09, 2020 The Global Tailings Review (GTR) released the first-ever Global Standard on Tailings Management in August. The standard aims to strengthen current best practices around the management of tailings dams in the mining industry, with the goal of zero harm to people and the environment.

Mine tailings and their environmental legacy Sudbury Star

Oct 14, 2020 Mine tailings pose a number of risks including dam failure, leaching and wildlife exposure. These risks can impose serious consequences to aquatic environments and have detrimental effects on many wildlife species. In 2008, approximately 1600 ducks died after landing on bitumen polluted tailings

New Carolin plans to capitalize on gold tailings near

Dec 07, 2020 New Carolin Gold (TSXV:LAD) (OTC:LADFF) today reported that recent metallurgical testing of samples from tailings at its Ladner project, located not far from Vancouver, B.C., confirmed that a significant gold concentrate could be produced by regrinding the tailings to a finer size and utilizing conventional flotation. The tests were performed by Met-Solve Laboratories of Langley, B.C., a full

Chronic trace metals effects of mine tailings on estuarine

Aug 28, 2019 Mine tailing disasters have occurred worldwide and contemporary release of tailings of large proportions raise concerns of the chronic impacts that trace metals may have on the aquatic biodiversity. Environmental metabarcoding (eDNA) offers an as yet poorly explored opportunity for biological monitoring of impacted aquatic ecosystems from mine tailings and contaminated

Tailings dam failures: an interesting perspective article

May 13, 2019 Tailings dam failures: an interesting perspective article in Science. Late last week the journal Science published a very interesting Perspective article (Santamarina et al. 2019) on tailings dam failures.. The gist of the article is summarised in this part of the conclusion:

Tailings dewatering Weir Group

Nov 18, 2019 When tailings are not properly managed, the results can be lethal. It is vital that mine operators have a clear understanding of key risks and considerations related to this process, in particular, tailings dewatering. Every mine site is different and subject to varying environmental, regulatory, capital and operating cost constraints.

Environmental Risks From Mine Tailings

Aug 10, 2018 Learn what mine tailings piles and tailing ponds are, and the environmental risks they are associated with. Menu. Home. Sustainability for All. 20,000 Articles on Everything Green. Search.

Process effluents and mine tailings: sources, effects and

Dec 19, 2016 Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are

Phosphate Mine Tailings Case Study Environmental XPRT

Article Phosphate Mine Tailings Case Study. THE CHALLENGE A typical phosphate mining operation can produce between 180,000 and 225,000 gallons per minute of fine phosphatic clay tailings. This material has a solids concentration of between 2% and

Comparison of Environmental Impacts of Deep-sea Tailings

Dec 02, 2019 With increasing metal prices and declining ore grades, new mines are getting larger and mine waste disposal and management have become more difficult, particularly from an environmental perspective. While technologies keep on improving, the available space for terrestrial mine waste disposal is limited. Thus, several coastal countries still consider deep-sea tailings placement (DSTP)

Mine tailings Article about Mine tailings by The Free

tailings[′tāl·iŋz] (engineering) The lighter particles which pass over a sieve in milling, crushing, or purifying operations. (mining engineering) The parts, or a part, of any incoherent or fluid material separated as refuse, or separately treated as inferior in quality or value. The decomposed outcrop of a vein or bed. The refuse material

New Minerals Capture CO2 in Mine Waste US

When mine tailings are removed from the ground in the mining process and exposed to the atmosphere and to rain water, they can react to form new minerals that trap CO2 from the atmosphere. The research highlights the potential for improving carbon capture one to two meters beneath the surface of mining wastes, where most sequestration usually

Ruffer Investment Management Tailings dams

Oct 05, 2020 Several recent and catastrophic tailings dam collapses have brought into focus the complex interaction between a mine site and the local community and environment in which it operates. The failure of the tailings dam at the Córrego do Feijão iron ore mine in Brumadinho, Brazil, in January 2019 is one of the most devastating.