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Sunday, May 10, 2020 | History

2 edition of Oxidation of Yukon Mine Tailings found in the catalog.

Oxidation of Yukon Mine Tailings

Doug Davidge

Oxidation of Yukon Mine Tailings

by Doug Davidge

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  • 6 Currently reading

Published by Departmentof Environment, Environmental Protection Service in [s.l.] .
Written in English


Edition Notes

Statementby Doug Davidge
SeriesRegional Program report 84-15, AQUAMIN collecton -- Study no. 177.
The Physical Object
Pagination1 vol. (multiple pagination) : ill., maps
ID Numbers
Open LibraryOL22165572M

The tailings are visibly oxidized and are known to be acid-generating and to contain Acidithiobacillus ferrooxidans (2). Catalan et al. (1) found that the tailings contained on aver μg of sulfur /g of tailings. Whole samples of tailings with minimal visible oxidation were collected and stored at 4 ºC to preserve microbial Size: 4MB. An alkaline extraction method has been developed for the determination of total sulfate in mine tailings containing secondary sulfate minerals formed by the oxidation of primary sulfides. Oxidized tailings were extracted with a M NaOH solution at a liquid/solid ratio of 30 at room temperature for 16 h.

The oxygen flux across the tailings surface ranged from to mol O 2 m −2 yr −1 for ambient oxidation conditions. Fresh tailings at the surface produced rates that were as much as twice the ambient rates. The m fine sand cover lowered rates by a factor of below ambient by: The environmental geochemistry of sulfide mine-wastes. David W transport geochemical geochemistry gibbsite goethite grain groundwater Heath Steele hydraulic conductivity hydroxide intrinsic oxidation rate iron Jambor jarosite laboratory layer lepidocrocite mechanisms melanterite method mg/L mill-tailings The environmental geochemistry.

Mine Waste Characterization, Management and Remediation Karen A. Hudson-Edwards 1,* and Bernhard Dold 2 1 Department of Earth and Planetary Sciences, Birkbeck, University of London, Malet St., London WC1E 7HX, UK 2 SUMIRCO (Sustainable Mining Research & Consult EIRL), Casi San Pedro de la Paz , Chile; E-Mail:@ed by: ENVIRONMENTAL ASSESSMENT AND REMEDIATION OF ABANDONED MINES IN THE YUKON TERRITORY and from seeps emanating from waste rock, tailings, pit walls, and adits. Samples were analysed for total metals, pH, conductivity, hardness, and sulphate. G. Hazardous Materials were inventoried and sampled for confirmation, if Size: KB.


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Oxidation of Yukon Mine Tailings by Doug Davidge Download PDF EPUB FB2

The Ketza River mine is a former gold mine in Yukon, Canada operated from to producing over tons of gold. There are ~, tons of tailings containing on average 4 wt% As. As reported Cited by: 1. The Ketza River mine is a former gold mine in Yukon, Canada operated from to by producing over tons of gold and ~, tons of tailings containing on average about 4 wt% As.

Acid-generating sulphidic tailings from a Ni Cu mine were exposed on the shores of Hudson Bay for 30 years before burial in a drained bedrock basin.

To determine if encapsulation in permafrost will Cited by: Yukon's massive Casino mine project pushed back a year 'If it takes us a little extra time to get it done right, we'll take that time,' said Paul West-Sells, CEO of Western Copper and Gold.

Social Missing: Oxidation. The chemistry of sulfide mine tailings treated with potassium ferrate (K 2 FeO 4) in aqueous slurry has been investigated. The reaction system is believed to parallel Oxidation of Yukon Mine Tailings book geochemical oxidation in Cited by: Davidge D () Oxidation of Yukon mine tailings.

Environ Protect Serv Reg Progr Repp 39 Google Scholar Davis GB, Ritchie AIM () A model of pyrite oxidation in waste rock by: An important source of heavy metal contamination, sulfide tailings are usually disposed of in open-air impoundments and thus are exposed to microbial oxidation.

Microbial activities greatly enhance sulfide oxidation and result in the release of heavy metals and the precipitation of iron (oxy)hydroxides Cited by: Y.T.J.

Kwong CANMET Mining and Mineral Sciences Laboratories, Natural Resources Canada, Canada Abstract A total oft of tailings enriched in arsenic and cyanide impounded behind an earth dam of suspect physical integrity constitute the greatest environmental liability at an abandoned gold mine on Mount Nansen, Yukon Territory, : Y.T Kwong.

A series of column experiments were conducted to evaluate three methods to determine sulphide oxidation rates in mine tailings. Measurements were made of (i) the flux of oxygen across the surface of the tailings, (ii) the oxygen consumption rates at the tailings surface, and (iii) the total sulphate produced in the pore water over columns were prepared with a mixture of quartz sand Cited by: Tailings and Mine Wastes.

the oxidation of sulphide minerals. I t pro vides one. Mine tailings are a major waste stream generated in mining operations. Tailings are the waste material. To address the lack of field data of sulphide oxidation rate in fresh sulphide-rich tailings under near-neutral conditions, determination and simulation of the rate was performed in pilot-scale at Kristineberg, northern Sweden.

The quality of the drainage water was monitored, along with oxygen and carbon dioxide by: 4. Only 20% of the tailings material will be potentially acid-generating, meaning they need to be covered with water to avoid oxidation and acid-mine drainage. West-Sells says the philosophy behind tailings dam design has changed drastically since Mount Polley.

Minto Explorations Ltd. Tailings Management Plan Minto Mine January 1 1 Introduction The objectives of the Tailings Management Plan (TMP) are to summarize the quantities of mine tailings that require management under the remaining Phase IV, Phase V/VI, and Phase VII mining plans, and toMissing: Oxidation.

New Technologies on Mine Process Tailing Disposal Bascetin A., Tuylu S., Adıguzel D., and Ozdemir O. Mining Engineering Department, Engineering Faculty, Istanbul University, IstanbulTurkey Abstract: Tailings are formed as a result of mine processing.

When these ta ilings are left in an environment in an inappropriate manner,File Size: KB. Nutrient deficiency, especially bio-available nitrogen deficiency, often impedes the bioremediation efforts of mining generated tailings.

Biological nitrogen fixation is a critical process necessary for the initial nitrogen buildup in tailings. Current knowledge regarding the diazotrophs that inhabit tailings is. The microbially mediated oxidation of sulfide minerals within mine-tailings impoundments generates acidic conditions and releases high concentrations of dissolved metals.

Mill tailings at the Heath Steele mine in New Brunswick contain up to 85 wt.% sulfide minerals (Blowes et. A versatile numerical model that couples oxygen diffusion and sulfide‐mineral oxidation (PYROX) has been developed to simulate the oxidation of pyrite in the vadose zone of mine tailings.

A shrinking‐core oxidation model and a finite element numerical scheme are used to simulate the transport of oxygen and oxidation of pyrite by: At the time of Yukon's devolution, 7 mine sites were identified that have, or could have, unfunded environmental liabilities.

These mine sites are called Type II mine sites. Some are now abandoned and others are still operating. The proposal is now before the Yukon Environmental and Socio-economic Assessment Board (YESAB). The YESAB application says the mine tailings around Dawson are suitable for use as fill, and base Missing: Oxidation.

Determination of risk of mine tailings from a mine in the state of Durango, Mexico Guadarrama Guzmán Pedro 1, Fernández Villagómez Georgina 2, María Teresa Alarcón Herrera 3, José Luis Martínez Palacios 4, Sánchez Pérez Francisco 5.

1,2, Universidad Nacional Autónoma de México, Facultad de Ingeniería, División de Ingeniería Civil y. Tailings Oxidation at Cover-Tailings Interface • Preliminary oxidation confined to the tailings cover- interface • In TP1, frozen tailings were observed within m of tailings-cover contact • In TP2, partially frozen tailings were within 2m of tailings-cover interface • Unknown total depth of.

Mine developers and operators are evaluating filtered tailings, also known as dry stack tailings, as an alternative to whole slurry, thickened, and paste tailings.

and increased potential for oxidation of potentially acid generating tailings. Filtered tailings stacks at Minto and Bellekeno in the Yukon are in closure. Filtered tailings.Mine tailings are among the largest mining wastes on Earth and can reach surface areas of up to 52 km2 [1] and be several hundred meters high.

As this waste type results mainly from the flotation process of sulphide mineral ores they are very likely to produce acid mine drainage (AMD), the main environmental problem of contemporary mining by: