how are material fed into a tailings dam

  • Geotechnical Evaluations of a Tailings Dam for Use by a

    tailings dam will adequately model a cut and fill operation where the excavated waste material will be used to construct the tailings dam Construction of the tailings dam will happen in stages with starter dam followed by successive additions to a accommodate the need for reservoir capacity Several aspects such excavation depth the types of

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  • Tailings dam failures an interesting perspective article

    2019 05 13· 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:

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  • Geotechnical Factor of Safety and Risk Klohn Crippen

    2018 08 01· For this reason it is necessary to involve experienced dam design professionals in the material characterization analysis sensitivity and interpretation of the results The application of FoS criteria by engineers in dam design has evolved over time and is being reviewed by professional associations following recent tailings dam failures

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  • Best Practices for Tailings Dam Design Klohn Crippen Berger

    Tailing ponds are areas of refused mining tailings where the waterborne refuse material is pumped into a pond to allow the sedimentation (meaning separation) of solids from the water The pond is generally impounded with a dam and known as tailings impoundments or tailings dams

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  • Tailings Management Teck

    Tailings are then discharged into the dam and as the embankment is raised each new wall is constructed and supported on top of the downstream slope of the previous section so the dam crest moves downstream with each raise Like the Centerline construction the dam wall does not rely upon beached tailings for wall support Single Stage

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  • Recycling and Utilization of Mine Tailings as Construction

    Recycling and Utilization of Mine Tailings as Construction Material through Geopolymerization Lianyang Zhang PhD PE Department of Civil Engineering and Engineering Mechanics University of Arizona Tucson Arizona US EPA Hardrock Mining Conference 2012 Advancing Solutions for a New Legacy April 3 5 2012 Denver Colorado

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  • How

    An aerial view shows the damage caused by a tailings pond breach near the town of Likely BC Tuesday August 5 2014 The pond which stores toxic waste from the Mount Polley Mine had its dam

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  • Tailingsinfo Surface Tailings Containment

    Tailings are either pumped or gravity fed through pipelines or open flumes from the processing plant to their final storage location (ICOLD and UNEP 2001) The tailings flow is normally thickened at the plant to recover water for reuse in the mineral processing stage and to prevent unnecessary discharge and water management at the storage

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  • Technical Report Design and Evaluation of Tailings Dams

    Design and Evaluation of Tailings Dams 2 More recently concerns have been raised about the stability and environmental performance of tailings dams and impoundments Stability concerns are raised in part by the use of tailings material in tailings dams/embankments; to mitigate these concerns such embankments often rely on a certain amount of

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  • Tailings filtration risk reduction through understanding

    Tailings filtration risk reduction through understanding and designing for variability RG de Kretser Acclarium Tailings and Solid Liquid Separation Consulting Australia Abstract In the face of recent high profile tailings dam failures there has been an increased focus on the consideration

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  • MINE TAILINGS STORAGE SAFETY IS NO ACCIDENT

    Mining Tailings Storage Safety is no accident was prompted by tailings dams disasters and rising global concerns about the safety management and impacts of storing and managing large volumes of mine tailings The increasing number and size of tailings dams around the globe magnifies the potential environmental social and

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  • Tailings dam failures an interesting perspective article

    2019 05 13· 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:

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  • Tailings

    Tailing ponds are areas of refused mining tailings where the waterborne refuse material is pumped into a pond to allow the sedimentation (meaning separation) of solids from the water The pond is generally impounded with a dam and known as tailings impoundments or tailings dams

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  • Tailings Rio Tinto

    The tailings are then discharged into the dam which then harden to form the foundation for the next level of wall Ensuring water is properly removed and recycled is a crucial element of maintaining the structural integrity of the wall These are suitable for facilities in areas of low rainfall low seismic activity and relatively flat terrain

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  • W Allen Marr

    Key geotechnical factors affecting stability of tailings dams Geometry slope and toe conditions Subsurface profile horizontal layers of weak materials in tailings in dam in foundation Pore pressures within dam foundation and stored tailings complicated due to anisotropic nonhomogeneous materials and

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  • Tailing Dam an overview ScienceDirect Topics

    Since the tailings are not required for the dam construction they may be fed into the pool without separation of the sands from the slimes In some cases the output of overburden may not be sufficient to keep the dam crest above the tailings pond and it may be necessary to combine waste rock and tailings sand fills to produce a safe economical dam Figure 166 Dam

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  • Mine Tailings Disposal Methods

    The valuable metal bearing material produced during milling is called concentrate while the undesirable waste material is called tailings Since ores are usually crushed and ground before milling both concentrate and tailings consist of finely ground particles In the past mill tailings have been discharged onto hillsides or directly into lakes or streams These practices are now

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  • Tailings dam

    Unlike water retention dams a tailings dam is raised in succession throughout the life of the particular mine Typically a base or starter dam is constructed and as it fills with a mixture of tailings and water it is raised Material used to raise the dam can include the tailings (depending on their size) along with dirt

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  • Global public consultation launched on tailings dam

    2019 11 15· The Global Tailings Review an initiative launched following the tragedy at Vales Corrego do Feijão mine in Brazil early this year has kicked off a

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  • Tailings Management Syncrude

    Tailings Dam Safety; Tailings Reclamation; Water + A soft clay rich material is produced after spinning fine tails through centrifuges Tailings Management At Syncrude tailings are a byproduct of our process to extract bitumen from oil sand Tailings are composed of a mixture of water sand clay fine solids residual hydrocarbon and salts all of which are naturally found

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  • Geotechnical Properties of Mine Tailings Journal of

    Geotechnical Properties of Mine Tailings The produced tailings were transported into a hydrocyclone separation facility and two kinds of tailings were generated ie coarse tailings from the bottom and fine tailings from the overflow of the hydrocyclone separation facility The concentrations of the produced coarse iron and fine iron tailings from the Yuhezhai iron mine were about 65

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  • Geotechnical Properties of Mine Tailings Journal of

    Geotechnical Properties of Mine Tailings The produced tailings were transported into a hydrocyclone separation facility and two kinds of tailings were generated ie coarse tailings from the bottom and fine tailings from the overflow of the hydrocyclone separation facility The concentrations of the produced coarse iron and fine iron tailings from the Yuhezhai iron mine were about 65

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  • Static Liquefaction and Strength Loss in Tailings Dams

    2018 04 11· Static liquefaction and strength loss of tailings dams due to undrained failure has become a topic of interest in tailings management following the Fundão and Mount Polley tailings dam failures Static liquefaction is the sudden loss of strength when loose soil typically granular material such as sand or silty sand is loaded and cannot drain

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  • New Technologies on Mine Process Tailing Disposal

    New Technologies on Mine Process Tailing Disposal Bascetin A Tuylu S Adıguzel D and Ozdemir O Mining Engineering Department Engineering Faculty Istanbul University Istanbul 34413 Turkey Abstract Tailings are formed as a result of mine processing When these ta ilings are left in an environment in an inappropriate manner

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  • Stability of Tailings Dams

    aspects like mechanical properties of tailings material behaviour of tailings dams during raising failure modes of tailings dams pore pressures that develop during construction of a tailings embankment conditions of analysis for tailings embankments choice of a numerical tool and review of available constitutive soil models 2

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  • Tailings Rio Tinto

    The tailings are then discharged into the dam which then harden to form the foundation for the next level of wall Ensuring water is properly removed and recycled is a crucial element of maintaining the structural integrity of the wall These are suitable for facilities in areas of low rainfall low seismic activity and relatively flat terrain

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  • Tailings Mineral Industry Solution WesTech Engineering Inc

    Mining shovels remove the oil sand and load it into large mining trucks These trucks carry the oil sands to mobile crushers The crushed material is stockpiled for the next step Slurry The oil sands broken up in these crushers are then fed to rotary breakers with the addition of hot water to remove rocks and other debris The resulting

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  • Mount Polley Mine Tailing Dam Breach Province of British

    A tailings dam failure at the Mount Polley Mine occurred on August 4 2014 resulting in the loss of about 17 million cubic meters of water and 8 million cubic meters of tailings/materials into Polley Lake Hazeltine Creek and Quesnel Lake having significant impact An emergency response was undertaken by the Province involving various agencies

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  • Tailings management

    Tailings have become a major concern in the mining industry If not handled properly tailings have shown to cause disasterous results not only to a project but also to the communities that surround the mining projects has developed Tailing Handling solutions based on this need for something better A way to handling tailings in a sustainable way for today and be able to handle

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  • SAFETY AND SECURITY OF OUR TAILINGS STORAGE FACILITIES

    cyclones separate the tailings into a coarse and fine fraction on the embankment during deposition Preferential deposition of the cyclone underflow onto the embankment creates a free draining competent and stable construction material while the fine fraction and the majority of the water delivered with the tailings flows

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  • Properties of Tailings Dams Uranium

    The embankments forming these impoundments are earthfill dams Although water retention type dams would be very suitable for tailings dams they are not used for their high cost Other than water retention type dams tailings dams usually are not constructed initially to completion but raised sequentially as the impoundment fills

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  • Geochemistry of Tailings from the Mount Polley Mine

    The dam breach resulted in a release of tailings and other materials into Polley Lake Hazeltine Creek and Quesnel Lake As part of remediation planning a geochemical characterization program assessed the metal leaching and acid rock drainage (ML/ARD) potential of the spilled tailings and other materials

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  • THE FUTURE OF MINING TAILINGS MANAGEMENT

    2017 09 22· Recent disasters from all over the world clearly demonstrate the dangers of traditional mining water management Tailings dam failures have been on the rise due to

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  • Tailing Disposal Methods and Tailings Dam Construction Design

    Tailings Dam Construction Design of slime is likely to slide and cause the dam to break away The procedure usually adopted in such cases is to separate the tailing into coarse sand and fines in a classifier and to use the coarse product to build up the wall ; the remainder of the pulp is discharged into the interior of the dam

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  • Tailings Dam Questions and Answers

    Toll Free 18889669995 Casino Mining Corp T 6046849497 1800 570 Granville St F 6046692929 Vancouver British Columbia

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  • The danger of tailings dams The Economist explains

    This involves banking up the tailings themselves and then increasing the height of the dam as mining operations progress by adding more material as the tailings dry out Dams made with the

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  • 11a Andries Strauss Selati Tailings Dam Decant Failure

    Tailings are mainly deposited on the Selati tailings dam with the Southern dam serving as a bypass capacity in case problems are experienced at the Selati Transfer pump station Tailings are deposited via 1 m diameter cyclones which are fed from the Tailings Transfer Pump Station by way of 5 feed lines installed to distribute tailings material

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  • STATIC LIQUEFACTION IN TAILINGS DAM AND FLOW FAILURE

    material is from a geotechnical point of view truly devastating since tailings are released into the environment If the liquefied material is temporarily transformed into a heavy liquid much denser than water (because the density of the solid particles of the tailings is greater than 286 g/cm3) the increase in

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  • Stability of Tailings Dams

    aspects like mechanical properties of tailings material behaviour of tailings dams during raising failure modes of tailings dams pore pressures that develop during construction of a tailings embankment conditions of analysis for tailings embankments choice of a numerical tool and review of available constitutive soil models 2

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