Technical Document: Acid Mine Drainage Prediction

Acid Mine Drainage Prediction compares acid rock drainage factors of waste rock piles and tailings impoundments. In examining this table, it is important to note that diffusion of oxygen into water is slow and, therefore, oxidation of iron sulfide is inhibited until the water level drops, which can occur periodically or seasonally in some cases.

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(PDF) Disposal, reprocessing and reuse options for acidic ...

Disposal, reprocessing and reuse options for acidic drainage treatment sludge. ... sludge disposal in tailings ponds, with waste rock, in mine workings, in pits, under water covers, and as ...

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Reprocessing Tailings Dams – A systematic Approach (Part 1)

April 2, 2014 Acid Rock Drainage, Geometallurgy, Tailings, Uncategorized This is the first of two blogs examining the reprocessing of tailings dams. Millions of tonnes of sulphide tailings are produced each year from base metal and gold flotation operations.

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Source control of acid mine drainage.

Acid rock drainage is caused by the oxidation of sulfide-bearing minerals followed by leaching and mobilization of toxic elements. This paper describes research by the Bureau of Mines demonstrating the feasibility of reprocessing the tailings and removing the sulfidic material, which is the ARD source, using conventional mineral processing methods.

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Review of Disposal, Reprocessing and Reuse Options for ...

The treatment of acidic mineral effluents, such as acidic drainage (AD), acid mine drainage (AMD), acid rock drainage (ARD) and process water, is commonly accomplished through lime neutralization. This centuries old technology is effective in raising the pH of the water and precipitating the metals to below regulatory limits.

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Mine Waste Transfer and Disposal Methods - Mine Tailings ...

Water exposed to mining processes is also often acidic and can contaminate local water sources in a process called acid mine drainage (AMD) or acid rock drainage (ARD). Acid mine drainage is a heavy contributor to pollution of surface water across the globe.

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Reprocessing of Mining waste:combining environmental ...

carbonates (Juillot et al., 1999), acid mine drainage (AMD) – also called acid rock drainage – is generated. A A worldwide estimate assumes that about 20,000 km of river and 70,000 ha of lake ...

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Combined tailings and mine waste - knightpiesold

The benefits of combining tailings and mine waste in a relatively homogenous manner, in which ... potential to develop and emit acid rock drainage. If properly combined and placed, such a ... prevention and control of sulphide oxidation requires full saturation while maximizing shear . 84.

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Acid Mine Drainage - Ground Truth Trekking

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(PDF) Preventing acid mine drainage from mine tailings

Keywords: Acid Mine Drainage, tailings, sulphide ores, soils and groundwater contamination, heavy metals, leachate. 1 Introduction 1.1 Sulphide mine waste and tailings It is known that mining ...

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Source control of acid mine drainage.

Acid rock drainage is caused by the oxidation of sulfide-bearing minerals followed by leaching and mobilization of toxic elements. This paper describes research by the Bureau of Mines demonstrating the feasibility of reprocessing the tailings and removing the sulfidic material, which is the ARD source, using conventional mineral processing methods.

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CONTROL OF ACID ROCK DRAINAGE FROM MINE TAILINGS …

CONTROL OF ACID ROCK DRAINAGE FROM MINE TAILINGS THROUGH THE ADDITION OF DISSOLVED ORGANIC CARBON by Paul John Sturman A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering MONTANA STATE UNIVERSITY Bozeman, Montana November 2004

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DISPOSAL, REPROCESSING AND REUSE OPTIONS FOR …

drainage treatment sludge disposed with tailings is generally unknown and requires considerable further investigation. The practice of co-mixing tailings with treatment sludge for disposal involves injecting the treatment sludge into the tailings slurry prior to discharge to the impoundment. Typically, the sludge to tailings ratio is less than 1:20.

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How to Control Acid Mine Drainage with Surfactants

Objective Reduce or prevent acid mine drainage from coal refuse piles and surface mines by inhibiting the growth of acid- causing bacteria. Approach A dilute surfactant or detergent solution is applied directly to coal refuse piles or overburden using a hydroseeder or road watering truck.

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ACID ROCK DRAINAGE PREDICTION MANUAL MEND …

Acid Rock Drainage Prediction Manual 2 2. THE PROBLEM OF ACID ROCK DRAINAGE Acid rock drainage (ARD), often referred to as acid mine drainage (ARD), can be defined as the drainage that occurs as a result of natural oxidation of sulphide minerals contained in rock which is …

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Reprocessing of Mining waste:combining environmental ...

carbonates (Juillot et al., 1999), acid mine drainage (AMD) – also called acid rock drainage – is generated. A A worldwide estimate assumes that about 20,000 km of river and 70,000 ha of lake ...

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Acid Rock Drainage Testing - sgs

Acid Rock Drainage Testing Subject: Acid rock drainage (ARD) is the outflow of acidic water from mining operations including waste rock, tailings, and exposed surfaces in open pits and underground workings. SGS laboratories offer complete ARD testing services that help predict acidic effl uents.

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Combined tailings and mine waste - knightpiesold

The benefits of combining tailings and mine waste in a relatively homogenous manner, in which ... potential to develop and emit acid rock drainage. If properly combined and placed, such a ... prevention and control of sulphide oxidation requires full saturation while maximizing shear . 84.

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Acid Mine Drainage - Ground Truth Trekking

Acid mine drainage is a problem at a number of active Alaskan metal mines including Red Dog, Greens Creek, and Kensington Mine. The potential impacts of acid mine drainage on Bristol Bay fisheries is the primary source of opposition to the proposed Pebble Mine in southwestern Alaska and also a concern at the proposed Donlin Gold Mine.

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Management of Tailings and Waste-Rock in Mining Activities

Tailings and waste-rock management facilities vary vastly in size, e.g. from swimming-pool- sized tailings ponds to ponds of over 1000 hectares, and from small tailings or waste-rock piles to waste-rock areas of several hundred hectares or tailings heaps over 200 m high.

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Acid Mine Drainage - an overview | ScienceDirect Topics

Acid rock drainage (ARD) (or acid mine drainage, AMD) is considered the most significant environmental issue related to mine waste management. It is produced through the natural oxidation of sulfidic minerals by air and water, accelerated by bacterial action ( thiobacillus ); thus exposed sulfide-bearing tailings (and waste rock) are prone to ARD generation.

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STANDARD GUIDANCE (COP 37) Tailings and Waste Rock

STANDARD GUIDANCE (COP 37) Tailings and Waste Rock ... new technologies to prevent and control acid rock drainage. Canada has lead a focused research program to address acid rock drainage and metal leaching directed by a committee of industry, government and NGO representatives.

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The Potential for Acid Mine Drainage and other Water ...

Under any mine scenario water in contact with tailings, waste rock, ore, product concentrate, or mine walls would leach minerals from those materials. In addition, chemicals would be added to the water used in ore processing. Most of the water used to transport tailings or concentrate or used in ore processing would be reused.

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Acid mine drainage - Wikipedia

Acid mine drainage, acid and metalliferous drainage (AMD), ... the pumping ceases, and water floods the mine. This introduction of water is the initial step in most acid rock drainage situations. Tailings piles or ponds, mine waste rock dumps, ... many discharges from abandoned mines are exempt from regulatory control.

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Acid mine drainage: past, present...future? | Wat on Earth ...

The mining of base and precious metals results in the production of immense quantities of waste rock, mill tailings, and waste related to refining processes. The generation of acid mine drainage (AMD) and release of water containing elevated concentrations of metals from mine wastes is an environmental problem of global scale.

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Reprocessing of mining waste: combining environmental ...

carbonates (Juillot et al., 1999), acid mine drainage (AMD) – also called acid rock drainage – is generated. A worldwide estimate assumes that about 20,000 km of river and 70,000 ha of lake and reservoir areas are seriously damaged by acidic mine effluent (Johnson and Hallberg, 2005). The control and mitigation of AMD

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Acid Mine Drainage - Office of Surface Mining

Acid Mine Drainage Research Acid mine drainage (AMD) has been the subject of intensive research since the 1960's. Research efforts have proceeded recently through the Acid Drainage Technology Initiative. The major areas of research on AMD are Prediction of AMD and Prevention/Mitigation. The following is an overview of information on some major ...

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Acid Mine Drainage (AMD) / Acid Rock Drainage (ARD)

Acid Rock Drainage as a concern and part of all metals and mining operations. ARD is often mislabelled AMD or Acid Mine Drainage too. So, to better understand AMD and ARD, let’s begin by defining some terms like pH -The standard measure of acidity.

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Acid Mine Drainage Overview

Acid Mine Drainage Overview Acid rock drainage (ARD) is produced by the oxidation of sulfide minerals, chiefly iron pyrite or iron disulfide (FeS2). This is a natural chemical reaction which can proceed ... that acid-generating tailings cover 12,000 hectares plus an additional 350 million tons of mine waste rock were noted (MEND 2001).

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Preliminary geotechnical assessment of the potential use ...

Column test investigation on the performance of monolayer covers made of desulphurized tailings to prevent acid mine drainage. Minerals Engineering 21 : 317-329 Crossref , ISI , Google Scholar . Demers I, Bussière B, Mbonimpa M, Benzaazoua M. 2009.

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Mining Flashcards | Quizlet

Acid mine drainage is ... tailings. The amount of tailings a mining operation produces far outweighs the amount of usable ore they get from the same site. For every 20 pounds of chalcopyrite, you might get ... The Surface Mine Control and Reclamation Act of 1977 (SMCRA)

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Tailings - Wikipedia

Tailings ponds can also be a source of acid drainage, leading to the need for permanent monitoring and treatment of water passing through the tailings dam; the cost of mine cleanup has typically been 10 times that of mining industry estimates when acid drainage was involved.

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Tailings - IPFS

Tailings ponds can also be a source of acid drainage, leading to the need for permanent monitoring and treatment of water passing through the tailings dam; the cost of mine cleanup has typically been 10 times that of mining industry estimates when acid drainage was involved. [11]

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Acid drainage control – Waihi Gold

Acid drainage control It is important to manage the placement of PAF material within the embankments to ensure that acid drainage is controlled both during the short term while the tailings storage facilities are being constructed, and in the long term.

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Characterization and assessment of potential environmental ...

Jan 14, 2013 · Keywords: Tailings, Hazardous/priority hazardous metal, Acid rock drainage, Environmental risk, Multivariate statistics Background Exploitation of mineral resources containing base and precious metals is one of the main activities that have contributed to the development of humanity.

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