Mining residue tailing ponds

MJ Series Jaw Crusher

MJ Series Jaw Crusher

MJ series jaw crusher is mainly used as a coarse crushing crusher. Its purpose is to crush rocks into smaller particle sizes for subsequent processing…

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MC Series Single-Cylinder Hydraulic Cone Crusher

MC Series Single-Cylinder Hydraulic Cone Crusher

MC series single cylinder hydraulic cone crusher is used in secondary and fine crushing operations. It is widely used in metallurgy, construction, highway,…

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ML Series Vertical Shaft Impact Crusher

ML Series Vertical Shaft Impact Crusher

Vertical shaft impact crusher is often used in the final crushing circuit. Due to the ability to produce fine-grained final products, ML series vertical…

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MD Series Multi-Cylinder Hydraulic Cone Crusher

MD Series Multi-Cylinder Hydraulic Cone Crusher

MD series multi-cylinder hydraulic cone crusher is used in the second and third stages of mineral processing and stone crushing, as well as the superfine…

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MF Series Fixed Shaft Circular Vibrating Screen

MF Series Fixed Shaft Circular Vibrating Screen

In order to eliminate the phenomenon of unbalanced vibration, unstable amplitude, on/off bounce, poor screening effect, and cracking of the screen box…

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MGD Series Vibrating Feeder

MGD Series Vibrating Feeder

MGD series vibrating feeder is designed for ultra-heavy working conditions and is suitable for feeding materials to primary jaw crushers, primary impact…

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MGB series hopper discharge feeder

MGB series hopper discharge feeder

MGB series hopper discharge feeder is mainly used for the uniform, quantitative and automatic control of under-silo feeding of bulk materials.…

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MZA/K Series Circular Vibrating Screen

MZA/K Series Circular Vibrating Screen

MZA/K series circular vibrating screen produced by Meilan has an axis-eccentric circular vibrating screen, which can be used for dry and wet classification…

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  • OBORTS Company, Opposite the residence of old General Mambou, Near Dragage, Bastos, Yaoundé, Cameroon
    Email: [email protected]

  • Tailing Ponds IDE Technologies

    In the mining process, ore mills generate huge amounts of waste, called tailings. These are most commonly dumped into ponds created from naturally existing valleys, and secured by dams. Other naturally sourced water, such as rainfall or snowmelt that was also collected in the ponds, needs to undergo the same treatment as the tailings.

  • Tailings Dams: Where Mining Waste is Stored Forever

    Jul 30, 2012· Stava, Italy: In 1985, tailings dams built to store waste from flourite mining failed due to poor design and extreme water pressure. Two hundred thousand cubic meters (186,462 cubic miles) of

  • Imminent pond collapse at phosphate mine in Florida

    Apr 05, 2021· The research, led by the Church of England (CoE) and fund managers, reveals that at least 166 of 1,635 dams holding mining waste — tailings — have had safety issues in the past.

  • The trouble with tailings ponds - Werner Antweiler

    Sep 02, 2014· Extracting the valuable minerals thus leaves behind an unwelcome residue, which conventionally is dealt with in tailings ponds. This problem is particularly pronounced for bitumen mining in Alberta, where the vast scale of the production poses significant environmental problems.

  • From Tailings to Treasure? Miners Make - Advancing Mining

    Mine sites typically manage tailings by constructing ponds secured by dams. According to the web site miningfacts, another strategy is to produce thickened tailings, which are pressed or have chemicals added to remove excess water. Thickened tailings can be mixed with cement and used in construction or as backfill in underground mines.

  • What you need to know about tailings ponds

    Understanding the tailings ponds breach at Mount Polley near Likely, B.C., which has emptied mine waste into waterways By Adrian Lee August 6, 2014 Damage from a tailings pond …

  • Henry’s Knob Site Case Study Revitalizing Mine Tailings in

    fertile soils. The site includes a 7-acre former open pit mine, tailings pond, spoils piles and remnant mine operations. In the 1950s and 1960s, Commercialores mined the site for kyanite (see text box). During the mining process, waste rock and spoils were dewatered in ponds and piles. Acid mine drainage and acid rock drainage impacted surface

  • Rehabilitation: from tailings to pasture, plantings and ponds

    When tailings deposition ceases, there will be an initial period in which the water quality within the pond will require monitoring and treatment. During this time, the tailings pond will be pumped to a low level to assist the tailings surface to gain strength. Tailings Storage 2 was decommissioned for tailings deposition in 2005.

  • What are Tailings? (with pictures) - wiseGEEK

    Jan 21, 2021· M. Haskins Date: January 21, 2021 Tailings may consist of crushed rock and minerals mixed with water.. In the mining industry the term tailings, or tails, refers to waste material that remains after most of the desired minerals have been extracted from the mined ore in a mine processing plant. Tailings, sometimes also called slimes, slickens or leach residue, usually consist of very fine

  • Mine tailings dam failures major cause of environmental

    Dec 19, 2017· 340+ people have died since 2008, communities have been ravaged, rivers contaminated, drinking water polluted, and fisheries ruined by mining tailings dam …

  • Mining Waste Mining waste: The Aznalcollar tailings pond

    This two-part article is a case study of the European Union and Spanish legislation with respect to the protection of the environment from mining activity. Mining activity can have many negative impacts on the environment by changing the land-scape,

  • 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.

  • China: a state of "tailings disaster"

    At the eastern end of the village, a tailings pond for the residue of ore covers more than 10 square kilometers and the water is six meters deep. The tailings pond is an expanding man-made lake that holds by-products of rare earths and iron extraction processes, including leftover rare earth elements, heavy metals such as niobium and thorium

  • Long-term Risk of Tailings Dam Failure (U.S. National Park

    Bingham Canyon Mine tailings pond. EcoFlight. Second, while water supply dams are all of the down-stream-type construction, the construction of tailings dam can be either (1) downstream, (2) centerline, (3) upstream, or (4) a combination of any of the previous methods. Downstream construction is the safest type of construction from a seismic

  • White Pine Mine tailings pond disappearing, still

    While it comes as a surprise to some, the state of Michigan still requires the registration and inspection of the human-made tailings ponds at the White Pine Mine. This makes the Tailings Pond No. 2 dam the longest in Copper Country. It is 5.5 miles long, and ranges in height up to 70 feet, according […]

  • Environmental Risks From Mine Tailings

    Aug 10, 2018· Tailings from copper and uranium mining often produce measurable levels of radioactivity. Tailing Ponds Some mining wastes become very fine after they have been ground up during processing.

  • Tailings ponds for mining and oilsands waste: FAQs CBC News

    The breach of a tailings pond at the Mount Polley copper and gold mine in B.C. has released 10 billion litres of mining wastewater into local waterways in early August.

  • China: a state of "tailings disaster"

    At the eastern end of the village, a tailings pond for the residue of ore covers more than 10 square kilometers and the water is six meters deep. The tailings pond is an expanding man-made lake that holds by-products of rare earths and iron extraction processes, including leftover rare earth elements, heavy metals such as niobium and thorium

  • Residue and Tailings Management - Lynas Rare Earths

    Residue and Tailings Management In line with the circular economy, Lynas’ approach to residues is to reduce, reuse and recycle where ever possible. Mt Weld: In 2019, Lynas completed the Mt Weld Tailings Dam Questionnaire, in response to the Investor Mining & Tailings Safety Initiative. View the information that Lynas provided here. The Mt Weld […]

  • Technical Report: Design and Evaluation of Tailings Dams

    low-grade ores that contain less than a few percent of metal values; the residue becomes tailings. Thus, tailings disposal is a significant part of the overall mining and milling operation at most hardrock mining projects. There are several methods used for tailings disposal. These …

  • Tailings Impoundment Stabilization Using Ground

    Tailings Sands - Dewatering Pumping Trial Program – Positive Results Dewatering wells yielded flows above expectations Wick drains were observed to accelerate the development of the drawdown cone and prevent perched water tables The sandy side of the tailings impoundment has since been designated as a make-up water source for the mine

  • Tailings: how to deal with them? That is the question

    Jul 22, 2020· Throughout the history of mining, and even today, tailings have been commonly disposed of in dams or ponds. Due to large volumes that need to be stored, tailing dams are huge anthropic structures (the highest tailing dam today is as high as 230 m [3]) and require intense monitoring and control to maintain their physical-chemical-geomechanical

  • Studies on flocculation of fine mineral tailings using

    Tailings are usually produced at some mineral processing and mine sits. In the mining, the most part of the mines are tailings whereas the extracted minerals are just small part of all fractions. After low-grade ores has been utilized, almost 99% of main materials may finally become tailing. Therefore, tailings contain large part of waste in mining

  • Tailings Dams: Where Mining Waste is Stored Forever

    Jul 30, 2012· Stava, Italy: In 1985, tailings dams built to store waste from flourite mining failed due to poor design and extreme water pressure. Two hundred thousand cubic meters (186,462 cubic miles) of

  • Tailings Ponds Dust Control Global Environmental Solutions

    Typically, tailings ponds are large areas used as a dumping ground for mining. tailings (waste material after the good stuff has been extracted). This is where the waterborne refuse material is pumped into a large man-made pond to allow the sedimentation (meaning separation) of solids from the water. The pond is generally impounded with a dam

  • Mine Tailings Disposal Methods

    Jun 16, 2017· In the past, reclamation of abandoned tailing ponds was seldom practiced by mining companies. At present, however, state laws in most mining states require some form of reclamation once a tailing pond has served its useful life. A number of studies have been conducted to investigate possible commercial uses of mill tailings.

  • What Are Tailings Ponds? Environmental Impact Alberta

    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 …

  • Tailings (Mines and Residue) - GHD

    Being a potentially high-risk asset, TSFs, tailing ponds, dams and residue disposal areas are now considered one of the most important structures on any mine site, with consequences of dam failure ranging from the catastrophic and tragic loss of life, expensive clean-up operations and political consequences that jeopardise company's viability

  • Boom in Mining Rare Earths Poses Mounting Toxic Risks

    Jan 28, 2013· The mining of rare earth metals, used in everything from smart phones to wind turbines, has long been dominated by China. But as mining of these key elements spreads to countries like Malaysia and Brazil, scientists warn of the dangers of the toxic and radioactive waste generated by the mines and processing plants.

  • Reclamation of Mine Tailings SpringerLink

    Chemicals reaching tailings ponds may undergo further reaction over an extended period of time changing their character. Alleviation of the chemical and physical limitations of tailings followed by reclamation of the tailings and the associated landscapes is a challenging task. Sewage Sludge Mine Waste Mine Tailing Bauxite Residue

  • Tailings Ponds Dust Control Global Environmental Solutions

    Typically, tailings ponds are large areas used as a dumping ground for mining tailings (waste material after the good stuff has been extracted). This is where the waterborne refuse material is pumped into a large man-made pond to allow the sedimentation (meaning separation) of solids from the water.

  • Tailings Pond - an overview ScienceDirect Topics

    The two tailings ponds contain a total of 20.3 million tons of tailings (Fig. 9.9 a), their average uranium concentration being 67 g/t. Because the barren process solutions were neutralised only to pH 7–8 (instead of shifting pH to 10.5–11) during the milling process, the TDS content exceeds 20 g/l in the liquid phase of the tailings.The tailings ponds were built without any proper base

  • Process effluents and mine tailings: sources, effects and

    Dec 19, 2016· To prevent the discharge of process-affected water of tailings pond to surface water directly, tailings ponds were first introduced to store the residue before discharge or reuse. Generally, mine tailings are disposed by different methods such as dry-stacking of thickened tailings on land, backfilling into abandoned open-pit mines or

  • Water evaporation for mines, tailings Dam Evaporation

    Tailings dams requires large areas to naturally evaporate the water and concentrate all solids , minerals and salts in the tailings dams. Additional challenge that the Mines has to deal with is the rainy season, In those areas where the rainfall is very high, it can lead to complex residue storage design.

  • The ins and outs of tailings dams - Mining Mirror Online

    Jan 17, 2019· Once the processing is complete, the waste material, referred to as tailings, are pumped to mining residue storage facilities, or what is generally better known as tailings dams. A tailings dam is the physical structure that holds, or impounds, the tailings pond, which serves the dual role of containing the fine material and recycling the water

  • Long-term Risk of Tailings Dam Failure (U.S. National Park

    The construction and care of a tailings dam is a relatively new phenomenon to society and to mining, which historically disposed of its waste in the most advantageous way, including piling wastes adjacent to the mines and discharging into nearby water bodies.

  • (PDF) Reclamation of Mine Tailings - ResearchGate

    Abandoned mine tailings from a wide variety of industries are found around the world. The chemical composition of tailings depends on the minerals mined and the extraction technique.

  • Reclaiming tailings sustainability Global Mining Review

    The question of how best to reduce dependence on tailings ponds, yet expedite reclamation of both water and product in the process, was at the top of the list for one Weir Minerals customer. Pumping stations are a critical element of tailings management, providing the energy needed to drive the downstream processes.