tailings back to the most cost effective

Life cycle cost estimation and environmental valuation of coal mine ...

There are some important economic indicators associated with LCC: net present value (NPV), internal rate of return (IRR), and discounted rate (DR) (Brealey, Myers, ... The authors used NPV to compare each option for the disposal of coal mine tailings and, subsequently, to determine the most cost-effective strategy for the...

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Tailings.info What are tailings? - Their nature and production

Tailings are a waste product that has no financial gain to a mineral operator at that particular point in time. Not surprisingly it is usually stored in the most cost effective way possible to meet regulations and site specific factors. Dams, embankments and other types of surface impoundments are by far the most common storage...

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Tailings Management - Department of Industry, Innovation and ...

Surface tailings storage facilities (TSFs) are among the most visible legacies of a mining operation, which ... design of the TSF should be integrated with the life-of-mine (LoM) plan so that the most cost-effective and ...... and transportability of the tailings, the chemical and biological reactivity of the tailings, the return water.

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Overview of Tailings Management Practice in Chile - ATC Williams

Mar 16, 2017 ... It shouldn't result in a systematic application of filtration and dry stacking options. High density thickened or paste tailings disposal are both effective ways to increase the strength properties of tailings deposits reducing the risk of liquefaction dramatically, and are generally more cost efficient than filtration.

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2.3.1 - Location of Tailings Storage Facilicty ... - Treasury Metals

Is the alternative reasonable to implement in a practical and economical fashion? ..... Goliath deposit, underground mining alone is a feasible method, but is not optimal since it is more economical to mine the upper ..... replacing any appreciable volume of materials back in the open pit at closure is cost prohibitive and is not.

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tailings disposal: an approach to optimize water and energy efficiency

tailings deposited. As the cost of water and electricity is likely to increase in the future, the higher-density tailings disposal options become more economical, with the ... 1.765. 2.182. Solids transported (t/h). 183. 183. 183. Water transported (m3/h). 186. 124. 62. Sheared yield stress (Pa). 2.4. 6.4. 92. Max water return (%). 43.

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tailings management - IM4DC

is to provide safe, stable and economical storage of tailings presenting negligible public health and safety risks and ..... Failure modes and risks after closure of a tailings storage facility could include most of the operational failure modes and risks, apart from failure of the tailings delivery or return water pipelines. Additional...

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Thirty Years of Tailings History from Tailings & Mine Waste - InfoMine

and more years of tailings facility design, operation, and closure by way of a survey of some of the best and some of the ... most sophisticated slope stability analyses in a few minutes on far more powerful computers. For a ... polymer-amended tailings are now common, although not as low cost as envisaged back then.

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holistic tailings management solutions - Outotec

The water set-up for a dry stacking tailings management process is shown in Figure 5. In the dry stacking model the amount of process make-up water is strongly reduced due to the removal of the open wet tailings dam, which loses much of the water. Now, the water can be much more effectively captured and reused back...

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Waste not, want not – rethinking the tailings and mine waste issue ...

It is much more effective to concentrate or clean the mined product close to the mining facility than transport it elsewhere. In cases where mining does not require backfilling of stopes, storing tailings back in underground mine voids is a rather expensive exercise and is commonly avoided. However, following a number of...

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Outotec offers three new technologies for sustainable tailings and ...

Dec 28, 2017 ... “Utilising Outotec's advanced control systems and thickener optimisation technology, the Outotec Thickened Tailings Plant offers stable process performance and consistent underflow density to ensure safe and cost-efficient TSF operation. It also enables the efficient recovery of process water, saves energy...

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A.04A Tailings Management Facility Construction Material Alternatives

Jun 15, 2010 ... Use of local borrow materials to replace mine waste rock for construction of the tailings embankment, ... embankment construction is the preferred option and provides the most efficient and cost effective design concept for the ..... pipeworks systems, plus a seepage recovery pond and pump-back system.

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Tailings storage facility design report - BHP Billiton

density enable more acidic tailings return liquor to be used back in the plant. Modelling of stability ... the design nevertheless also achieves a cost-effective solution in utilising the large quantities of available .... design report for the most recent new cell TSF4 (Coffey Metago, 1998) the 2004 operating seepage and stability...

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Technical Report Design And Evaluation Of Tailings Dams - epa nepis

At some projects, tailings embankments reach several hundred feet in height and the impoundments cover several square miles. Historically, tailings were disposed of where convenient and most cost-effective, often in flowing water or directly into drainages. As local concerns arose about sedimentation in downstream...

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Preferred hydraulic mining contractors selected for Century tailings

Feb 22, 2018 ... “Cost-effective hydraulic mining is an integral part of the company's projected lowest-cost quartile operations at the Century tailings deposit,” said New Century COO Barry Harris on Thursday. As part of the tender process, New Century management completed due diligence site visits to hydraulic mining...

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A review of binders used in cemented paste tailings for underground ...

Oct 24, 2013 ... internal sulphate attack) have prompted users to appraise less expensive and technically efficient sub- stitutes for mine tailings ... The most common approach is under-water storage of tailings such as in constructed surface impoundments and flooded pits (Samad and Yanful, 2005). In order to prevent...

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An end to tailings dams — FLSmidth Discover Mining

May 23, 2017 ... To optimize the capital and operating costs of plants operating at large tonnages, FLSmidth came up with the AFP-IV® Colossal™ filter. The filter enables effective dewatering of large volumes of tailings with less than half the number of filters required with competing large filters. The new filter not only...

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cost-effective, post-mining environmental restoration of an open-cast ...

Dec 1, 2010 ... Cost-effective, post-mining environmental restoration of an open-cast phosphate mine at. Langebaanweg ... layers were mixed with topsoil being covered by subsoil, overburden dumps and tailing dams being ... A study was conducted to determine the most efficient and cost-effective methods of vegetative...

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Water Solutions for Fly Ash, Slurry and Tailings Removal - Xylem Inc ...

However, more and more operators are reprocessing slurry tailings with new technology to recover minerals or metals left behind in the first line of processing. Xylem is here to help. ... The slurry pump from Xylem features a back-swept vane to accommodate abrasive slurry applications such as fly ash. Products Services...

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Alberta's tailings ponds - NRDC

companies have demonstrably effective reclamation technologies and enforceable plans to rapidly reduce tailings pond volumes. The laxity of the existing. Directive is all the more concerning in light of the fact that Canadians, rather than industry, could be obliged to pay most of the ever-growing costs of cleaning up.

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Brazil mine accident puts tailings ponds safety back in the hot spot ...

Nov 17, 2015 ... CEC uses a vacuum process that it claims is much more energy-efficient. But even with CEC's lower energy requirements, dry-stack technology has higher capital costs than traditional tailings ponds. And in high-rainfall areas like B.C., dry-stacking isn't feasible in many cases. Moreover, most mines in B.C....

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Time for a review - Mining Magazine

Nov 17, 2014 ... There are few topics more controversial or more likely to focus the beady eye of the world's media on the mining industry than the failure of a tailings storage ... Most of the material that passes through the processing plant therefore needs to be stored or disposed of in an economical and sustainable way...

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surveillance programs for tailings dams - CiteSeerX

response plans, represents a highly cost-effective, proactive risk management tool relative to the options of a failure or an unnecessarily .... temptation to cut back on surveillance program in favor of devoting more resources to profit ... Most tailings dams will require some degree of surveillance “forever”, particularly so for the.

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Mine Tailings De-Watering | Andrew R. | Pulse | LinkedIn

Jun 11, 2016 ... Dewatering Technologies, can mine tailings be de-watered and what technology is cost effective and why. ... They conclude that paste thickening is the most cost-effective way to reduce water use, many mine operations report that they have started prototype paste thickener projects to maximise water...

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Case Histories of Differnet Seepage Problems for Nine Tailings Dams

Tailings and Waste Disposal-Seepage, Contamination, Regulations, and Control. ABSTRACT. 36. Case Histories of Different ... construction of the most economical structures. This paper discusses projects that include a ..... water back from the face, where settlement indicated minor near surface liquefaction. Back stability...

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Effective acid and metals treatment in tailings dams - International ...

Apr 14, 2010 ... The formation of most acidic conditions on mine sites is due to the exposure of sulphidic minerals (often pyrite in tailings as FeS2), which are exposed to moisture and atmospheric oxygen, thereby producing acid, metal ions and sulphate ions. Additional oxidising pathways can be promoted when bacteria...

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2013 Colloquium of the Canadian Geotechnical Society ...

Nov 28, 2016 ... In this paper, these technologies are referred to as “high-density” tailings, which includes any technology that at least produces nonsegregating tailings that will .... high-density tailings depends on dewatering and increased transport costs being offset by the cost of water and dam construction cost savings.

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A custom approach to tailings management - Canadian Mining Journal

Sep 1, 2016 ... Examples of these include mine slime management, and dredging and dewatering of tailing ponds. Dredging and ... 3 Cost Savings: More often than not, our environmental solutions enable mines to recover and reuse enough product to cover the costs of the services, and then some. 4 Convenience: By...

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Decision 2004-113: Suncor Energy Inc. External Tailings ... - AER

Dec 30, 2004 ... strategy would be the most effective technology for reducing MFT inventories, optimizing water usage, and returning tailings disposal areas to stable landscape. Suncor stated that of all the alternatives investigated, the current tailings plan would be the most cost effective, simplest, and least susceptible to...

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Tailings Paste Disposal – More than Water Recovery

Mar 22, 2016 ... When water is expensive or scarce, water savings can more than pay for the cost of thickened tailings. ... Paste thickeners have been utilised to thicken the reprocessed tails to a non-settling, non-segregating paste which is then deposited sub-aqueously back into the pond. When the paste tailings are...

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The evolution of paste and thickened tailings - Australian Centre for ...

Dec 31, 2010 ... thickened tailings by Richard Jewell, Australian Centre for Geomechanics, Australia www.strategic2011.com. 9–11 November 2011,. Novotel Langley Perth,. Western Australia ... if it is the most cost-effective solution available. The cost of the plant ... and Thickened Tailings returns to Australia in April 2011...

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How are waste materials managed at mine sites | MiningFacts.org

[2] Thickened tailings can be mixed with cement and used in construction or as backfill in underground mines. [1] Although producing thickened tailings is often more expensive than storing the tailings in a pond, the use of thickened tailings is increasing, especially in arid areas where water availability is an issue. [2]...

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Improving the resource and eco-efficiency of mining ... - Xinhai

A resource and eco-efficient mining process might incorporate some or all of the alternatives presented in following pages. Mining operations need to operate more efficiently to meet environmental targets, but also to remain economically viable. Improving the resource efficiency increases the economic return of the project,...

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Tests show tailings contamination near Silver Bow Creek | Montana ...

Oct 10, 2016 ... A plan to put the excavated tailings in a dump the state would build on a ramp leading to the Berkeley Pit got scrapped over the summer for a second plan. The second plan appeared simpler and more cost effective for the state. In that plan, the state would leave the tailings behind MR's office building at 600...

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Tailings Retreatment: The Next Revenue Source for the Mining ...

The tailings retreatment industry looks to potentially hold significant value for the mining industry. ... with advancements in the solvent extraction – electrowinning (SX-EW, or L-SX-EW) process, the two processes allow for a highly effective, cost efficient extraction and separation of the target material from low-grade ores.

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Fugitive Dust Control for Haulage Roads and Tailing ... - CDC stacks

tent of this project to effectively reduce dust emissions from haulage roads and tailing basins. Fugitive dust sources in surface mines include haulage roads, tailing basins, stockpiles, topsoil removal ... it the most cost-effective type of con- trol (~) because its relatively high ... trucks returning to the pit. Both roads joined about...

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CHAPTER 2 LITERATURE REVIEW

The objective of this chapter is to present a literature review of tailings dam design and construction in general ... although economical, is also the least desirable from a safety point of view. The chapter ends with ...... from the dam slopes. • Return water system: System of dams, sumps and pipes for handling effluent from the.

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In Situ Leach Mining (ISL) of Uranium - World Nuclear Association

In USA ISL is seen as the most cost effective and environmentally acceptable method of mining, and other experience supports this. Conventional mining ... Once the pregnant solution is returned to the surface, the uranium is recovered in much the same way as in any other uranium plant (mill). In Australian ISL mines...

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Tailings Dust Emissions - ScholarWorks@UARK - University of ...

Degner, Emily; Horn, Sam; Galligan, Zakary; Bernard, Ryan; Jameson, Julie; Mueller, Josh; Tucker, Natalie; and Griffin, Joe, "Tailings ..... cement proved to be the most effective binder in regards to the pellet's cost, structural integrity, and longevity. However .... will affect the free water recycled back to the mine. During the...

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Submarine Tailings Disposal violates the Water ... - Vannportalen

19.04.2015: Norwegian authorities violated the Water Framework Directive when. Nordic Mining got a permit for dumping 6 million tonnes of mining waste, mixed with chemicals in Førdefjorden each year. 2. 13.03.2015: Norwegian authorities violated the Water Framework Directive when. Rana gruber got a permit for a...

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