secondary mining of tailings sand

Oil Sands Tailings: What Needs to be Done

 · This ruling requires operators to: (i) prepare tailings plans and report on tailings ponds annually, (ii) reduce the production of fluid tailings by capturing fines and placing them in a …

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What are Tailings

 · 4 Top Uses Of Tailings In Mining Industry For the use of tailings, many people know that they can be used to produce recycled sand and gravel aggregate, but they don''t know much about other uses. Here share 4 …

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CHAPTER VIII CLOSURE AND RECLAMATION

Sand dams, comprised of fine sand and silt tailings, are highly erodible. Even when capped and revegetated, gullies can penetrate the cover, leading to erosion of mine waste, fan deposition, and elevated suspended sediments in downstream watercourses, necessitating ongoing maintenance. Tailings and the tailings pore-water (the water that

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Tailings Ponds 101 | Oil Sands Magazine

 · TAILINGS PONDS 101. Tailings ponds (or tailings storage facilities) play a critical role in storing solids from mined oil sands and managing water flows. These ponds are massive earth structures, initially constructed from overburden hauled from the mine site. Tailings ponds are normally located in a part of the lease that has little or no bitumen.

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Oil Sands : Tailings Management

Oil sands tailings are a mixture of water, sand, fine silts, clay, residual bitumen and lighter hydrocarbons, inorganic salts and water-soluble organic compounds. Tailings are stored in basins called tailings ponds, which allow the solids in tailings to settle. The sand component of tailings settles out quickly, leaving the clay and silt to ...

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Potential for reuse of gold mine tailings as secondary …

Potential for reuse of gold mine tailings as secondary construction materials and Phytoremediation Restituta P. Mapinduzi 1, ... sand textured materials respectively. The …

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Mine tailings: reprocess, recover & recycle

 · Say a copper mine produced 1Mt of metal in 1999 at 90% recovery. The remaining 10% of copper, around 111kt, went to tailings. If the average copper price in 1999 was US$1,500/tonne then that 10% represented US$166.5 million of metal. Fast forward 20 years and at today''s price, US$5,842/tonne, if that material could be reprocessed and an extra ...

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Tailings Ponds 101 | Oil Sands Magazine

 · Tailings ponds (or tailings storage facilities) play a critical role in storing solids from mined oil sands and managing water flows. These ponds are massive earth structures, initially constructed from overburden hauled from the mine site. Tailings ponds are normally located in a part of the lease that has little or no bitumen.

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Tailings Management

New Requirements. We used the TMF to create Directive 085: Fluid Tailings Management for Oil Sands Mining Projects. Directive 085 replaced the former Directive 074: Tailings Performance Criteria and Requirements for Oil Sands Mining Schemes.. Directive 074 was first introduced to slow the growth of tailings ponds by creating standard requirements for all projects.

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Molecules | Free Full-Text | Biocementation of Pyrite Tailings …

 · Tailing sand contains a large number of heavy metals and sulfides that are prone to forming acid mine drainage (AMD), which pollutes the surrounding surface environment and groundwater resources and damages the ecological environment. Microbially induced calcium carbonate precipitation (MICP) technology can biocement heavy metals and sulfides in tailing …

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Finding alternative sources of sand – mine tailings

 · At the same time, changes in mining, environmental and waste policy means large volumes of mine tailings now need to be treated differently in many places in the world. The rising value of sand and the costs of storing …

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Finding alternative sources of sand – mine tailings

Taking 3000t/d tailings processing plant as an example, Xinhai tailings dry stacking saved the cost of 375~ 6.25 million Yuan per year, the rate of return water was over 90%. Calculated on 15 Yuan/ton, the mine company need pay taxes over 1.485 million Yuan per year. Calculated on 2 Yuan/ ton, the tailings can obtain at least 198000 Yuan per year.

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Vale sand to aid sustainability and mining tailings reduction

 · This year, Vale will allocate approximately 1 million t of sand, between sales and donations, for use in civil construction and tests in pavement, among other uses. The report carried out by the universities, titled "Ore-sand: A potential new solution to the mining tailings and global sand sustainability crises", investigated whether sand ...

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An Integrated Model for Oil Sands Long-Term Mine Planning, …

Mine Planning, Tailings and Reclamation Plans Mohammad Mahdi Badiozamani and Hooman Askari-Nasab Mining Optimization Laboratory (MOL) University of Alberta, Edmonton, Canada ... sand, silt and fine clay that is produced from the bitumen extraction process. It is pumped into tailings ponds, while still includes portions of bitumen that are not ...

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Role of secondary minerals in the acid generating potential of ...

Mine tailings exposed to water and oxygen generate acid mine drainage (AMD) when the neutralizing minerals are insufficient to buffer the acid produced by sulfide oxidation. ... Role of secondary minerals in the acid generating potential of weathered mine tailings: Crystal-chemistry characterization and closed mine site management involvement ...

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Secondary resources at abandoned mine tailings, Giyani …

The Klein Letaba gold mine tailings dam is situated on the south-western portion of the GGB about 20 km south-west of the present-day town of Giyani and roughly 85 km west of the Kruger national park. It is located between the latitudes 23°17''38''''S and 23°17''48''''S and longitudes 30°33''07''''E and 30°36''25''''E (Figure. 1).

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Chemical Leaching of Inactive Gold Mine Tailings as a Secondary …

 · The fractionation of Co, Ni and As in mine tailings were evaluated using a sequential extraction procedure . The crystalline phases present in mine tailings were determined by the X-Ray diffraction (XRD–Bruket AXS Advance D8) using CuKα radiation in the range from 5 to 70° with steps of 0.02° in 2θ (detection limit 1%).

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CN108617181A

The invention discloses a kind of methods using the secondary tailings soil of desert drift-sand, include the following steps:(1) the coarse grain drift-sand of 0.1 0.4mm is detached, fine fraction in former husky position backfill spare;(2) coarse granule drift-sand is subjected to ore grinding ore dressing extraction feldspar and quartz, the residue of each step is focused on as tailing ...

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Tailings | Alberta Energy Regulator

Tailings Management Framework. In March 2015, the Government of Alberta released the Lower Athabasca Region: Tailings Management Framework for Mineable Athabasca Oil Sands (TMF). The framework says that all fluid tailings should be ready to reclaim within ten years of the end of a mine''s life. We used the TMF to create Directive 085.

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The Tailings Center

The Tailings Center is an industry/university research and education center formed as a collaboration by the Colorado School of Mines, Colorado State University, and the University of Arizona. The Center will provide the training for specialized tailings engineers in order to improve the mining industry and increase the social and environmental ...

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Process and equipment for making sand with tailings | LZZG

Process and equipment for making sand with tailings June.04,2020 Tailings are "waste" discharged by mining companies under certain technical and economic conditions, but at the same time they are potential secondary resources. …

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What Are Tailings Ponds? | Environmental Impact | Alberta Oil Sands

In oil sands mining operations, tailings are a mixture of water, sand, clay and residual bitumen, and are the by-product of the extraction process used to separate the oil from sand and clay. Tailings and tailings ponds are not unique to the oil sands – they are used throughout Alberta and around the world in mining and other industrial processes.

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Recovery of critical materials from mine tailings: A ...

 · Mine tailings can be potential secondary sources of critical materials. • New Kankberg (Sweden) and Covas (Portugal) tailings contain rare earths and tungsten. • Hydrometallurgy was used to effectively recover and separate rare earths. • Extraction of rare earths from acids generally decreased in the order: nitric, hydrochloric, sulfuric. •

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Passivation of heavy metals in copper–nickel tailings by in-situ bio ...

 · Metal tailings contain a variety of toxic heavy metals and have potential environmental risks owing to long-term open piling. In the present study, a strain of ureolytic bacteria with bio-mineralization ability, Lysinibacillus fusiformis strain Lf, was isolated from copper–nickel mine tailings in Xinjiang and applied to a pilot trial of tailings solidification under field conditions.

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MANAGEMENT OF TAILINGS: PAST, PRESENT AND FUTURE

• The active Chilean downstream sand tailings the nature of the tailings, and potential contaminants, including sulphides, salinity, radioactivity, cyanide, etc., and how these may change during the mine life • the tailings production rate and solids concentration which must be accommodated, and how these change during the mine life

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Research on Mechanical and Carbonization Properties of Hybrid …

 · Iron tailings sand is a kind of mineral waste, and open-air storage is a common treatment method for iron tailings, which not only has a huge impact on the ecological environment but also occupies a lot of land resources. Therefore, the preparation of high-ductility fiber reinforced iron tailings concrete and its application in practical engineering structures …

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Gold Mine Tailings: A Potential Source of Silica …

 · 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 …

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Multi-University Center Aims to Minimize Mine Tailings Risk

As the global demand for minerals and metals continues to grow, so too does the proliferation of mine tailings – the waste materials left over when mining is complete. Tailings storage facilities, which typically remain long after the life of a mine is over, use dams to contain ground-up rock, sand, silt and water left over from processing ...

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Reducing Mining Waste with Sustainable Ore-Sand

1  · Laboratory tests conducted over a five-year period have indicated a 20% cost reduction and 50% lifespan increase compared with conventional road construction materials, including sand. A total of 7,000 tons of mine tailings are consumed per kilometer. Around 250,000 tons of sustainable ore-sand have been processed and sold since 2021.

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Benchmarking of large-strain consolidation ...

Proceedings Tailings and Mine Waste 2015 Vancouver, BC, October 26 to 28, 2015 Benchmarking of large-strain consolidation, sedimentation, and creep process for oil-sands tailings Krishna Chaudhary Murray Fredlund Hai Hua Lu Lianmin Xu SoilVision Systems Ltd. ABSTRACT Recent efforts in numerical modeling of the tailings consolidation processes for …

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