reclamation of tailings in denmark

The reclamation of Sullivan mine iron tailings - UBC ...

The reclamation of Sullivan mine iron tailings. Creator. Ames, Susan Eveline. Date Issued. 1981. Description. The Sullivan Mine iron tailings pose serious problems to reclamation which result from their high acid producing potential, extreme saline conditions, relatively high concentrations of heavy metals and tendency to cement upon oxidation.

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Tailings solutions for all mine conditions

Our thickened tailings solution uses a high-rate or high-density thickener, resulting in 50 to 65% solids, to recover water in tailings prior to disposal. With this option, you will recover higher volumes of water and reduce losses to seepage and evaporation. Advantages. Higher water reclamation for re-use.

More

Mine tailing removal dredging – Dredge Yard

2021-1-19  Mine tailings consist of crushed, finely ground rock and waste products from mineral processing operations in mining. Due to chemical components, storage and handling of tailings has become a major environmental issue worldwide. Therefore, mine tailing dredging provides an efficient solution to clean up mine tailings

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Annex 14. Methodology for Comprehensive Evaluation of ...

2018-5-4  for tailings management facilities” endorsed by the Conference of the Parties to the UNECE Convention ... contractor of the project was International HCH Pesticide Association (IHPA, Denmark) headed by the director Mr. John Vijgen. ... facilitate re-vegetation and reclamation; placement of waste rock in the underground workings or ...

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Nakupuna Companies hiring Reclamation Technician

Reclamation of tailings and waste rock piles. Any labor support needed to successfully complete project. Must enjoy working outside and exposed to all seasonal weather conditions.

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The development of centrifugal separation technology for ...

2016-12-22  The development of centrifugal separation technology for tailings Author: First presented at Tailings Mine Waste Conference in Banff, Alberta, 2009 Subject: Peter Mundy, Alfa Laval Inc., Calgary, Canada Bent Madsen, Alfa Laval AB, Soborg, Denmark Created Date: 12/9/2016 11:15:50 AM

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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 ...

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Microbially-accelerated consolidation of oil sands ...

2017-4-13  solidating the tailings solids to decrease the volume of stored tailings for subsequent reclamation. The tailings deposited into ponds (initially at ∼10wt% solids) settle by gravity in 2–4 years to form mature fine tail-ings (MFT, ∼30wt% solids), a colloidal suspension comprising slightly alkaline water, silt, clay, unrecovered bitumen ...

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35 No. 9 Uranium Extraction Technology

2010-1-14  DENMARK DOMINICAN REPUBLIC ECUADOR EGYPT EL SALVADOR ESTONIA ETHIOPIA FINLAND FRANCE GABON GERMANY GHANA ... 10.10. Decommissioning, reclamation and covers 272 10.11. Monitoring of tailings impoundment sites 273 10.12. Corporate responsibility and ongoing research 273 ... Neutralization of tailings pulp and liquids 303 References 304 CHAPTER 13 ...

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Gillervattnet reclamation project - Boliden

Reclamation of Gillervattnet began in 2013 and various techniques are being used to avoid the oxidation of the sulphur-rich sand, which can acidify and cause environmental damage. The pond was first partially drained and a layer of waste rock was laid on top of the tailings sand to stabilise the ground.

More

The reclamation of Sullivan mine iron tailings - UBC ...

The reclamation of Sullivan mine iron tailings. Creator. Ames, Susan Eveline. Date Issued. 1981. Description. The Sullivan Mine iron tailings pose serious problems to reclamation which result from their high acid producing potential, extreme saline conditions, relatively high concentrations of heavy metals and tendency to cement upon oxidation.

More

A multidisciplinary study for mining landscape

2011-1-1  The tailings on this depression have had an influence on the electrical resistivity values from x = 22 m to x = 35 m of profile 3 (below 13 Ωm). From x = 55 m to x = 175 m there is a near surface layer that it is composed of tailing and has electrical resistivity values below 8 Ωm.

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Tailings solutions for all mine conditions

Our thickened tailings solution uses a high-rate or high-density thickener, resulting in 50 to 65% solids, to recover water in tailings prior to disposal. With this option, you will recover higher volumes of water and reduce losses to seepage and evaporation. Advantages. Higher water reclamation for re-use.

More

Decommissioning Projects - Europe

2021-2-19  The reclamation of the Old Barrage is considered a key element of the environmental reclamation program. It is to be carried out at estimated costs of Euro 6.3 million in the years 2006/2007. The reclamation of the New Barrage and the Industrial Zone is to follow. The total reclamation cost is estimated at Euro 70 million.

More

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 ...

More

Comparison of Environmental Impacts of Deep-sea

2019-12-2  With increasing metal prices and declining ore grades, new mines are getting larger and mine waste disposal and management have become more difficult, particularly from an environmental perspective. While technologies keep on improving, the available space for terrestrial mine waste disposal is limited. Thus, several coastal countries still consider deep-sea tailings placement (DSTP)

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From Tailings to Treasure? Miners Make Money

2015-5-7  Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources. It expects to recover 58 kg of gold per month, and has enough slimes to last until 2025. Goldfields has also developed new technology for a tailings retreatment plant, and processes 12,000 tons of current ...

More

Microbially-accelerated consolidation of oil sands ...

2017-4-13  solidating the tailings solids to decrease the volume of stored tailings for subsequent reclamation. The tailings deposited into ponds (initially at ∼10wt% solids) settle by gravity in 2–4 years to form mature fine tail-ings (MFT, ∼30wt% solids), a colloidal suspension comprising slightly alkaline water, silt, clay, unrecovered bitumen ...

More

Decommissioning Data - Europe

2020-11-18  Status. Risø*. 0.15. 0.00113. closed ( Google Maps ) * from processing of ores originating from Kvanefjeld, Greenland. Source: Decommissioning of the nuclear facilities at Risø National Laboratory - Descriptions and cost assessment , Edited by Kurt Lauridsen, Risø National Laboratory, February 2001, Risø-R-1250 (EN), p.53 (4.1MB PDF)

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Suncor speeds tailings-pond reclamation Oil Gas

2009-10-23  Suncor speeds tailings-pond reclamation. ... inked a deal for the sale of subsidiary Equinor Refining Denmark AS—including its 107,000-b/d refinery at Kalundborg, Denmark

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Gillervattnet reclamation project - Boliden

Reclamation of Gillervattnet began in 2013 and various techniques are being used to avoid the oxidation of the sulphur-rich sand, which can acidify and cause environmental damage. The pond was first partially drained and a layer of waste rock was laid on top of the tailings sand to stabilise the ground.

More

Decommissioning Projects - Europe

2021-2-19  The reclamation of the Old Barrage is considered a key element of the environmental reclamation program. It is to be carried out at estimated costs of Euro 6.3 million in the years 2006/2007. The reclamation of the New Barrage and the Industrial Zone is to follow. The total reclamation cost is estimated at Euro 70 million.

More

Tailings solutions for all mine conditions

Our thickened tailings solution uses a high-rate or high-density thickener, resulting in 50 to 65% solids, to recover water in tailings prior to disposal. With this option, you will recover higher volumes of water and reduce losses to seepage and evaporation. Advantages. Higher water reclamation for re-use.

More

From Tailings to Treasure? Miners Make Money

2015-5-7  Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources. It expects to recover 58 kg of gold per month, and has enough slimes to last until 2025. Goldfields has also developed new technology for a tailings retreatment plant, and processes 12,000 tons of current ...

More

Best practice report on environmental protection and

2019-12-11  (2021), Sweden (2022), Ireland, Italy, UK (2025), Finland, Netherlands (2029), Denmark, Portugal (2030) go ahead. In Germany, the last hard coal mine closed at the Ruhr Area in 2018 after nearly 200 years of deep mining. In the same year, the phase-out of

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Microbiological and Geochemical Characterization of ...

Tailings in the Upper Clark Fork Valley and in other historic mining areas were fluvially deposited over many decades (8, 32). Consequently, Silver Bow Creek floodplain sediments are a heterogeneous mixture of tailings, silts, clays, fine- to coarse-grained sands, and gravel mixed with layers high in

More

Microbially-accelerated consolidation of oil sands ...

2017-4-13  solidating the tailings solids to decrease the volume of stored tailings for subsequent reclamation. The tailings deposited into ponds (initially at ∼10wt% solids) settle by gravity in 2–4 years to form mature fine tail-ings (MFT, ∼30wt% solids), a colloidal suspension comprising slightly alkaline water, silt, clay, unrecovered bitumen ...

More

Decommissioning Data - Europe

2020-11-18  Status. Risø*. 0.15. 0.00113. closed ( Google Maps ) * from processing of ores originating from Kvanefjeld, Greenland. Source: Decommissioning of the nuclear facilities at Risø National Laboratory - Descriptions and cost assessment , Edited by Kurt Lauridsen, Risø National Laboratory, February 2001, Risø-R-1250 (EN), p.53 (4.1MB PDF)

More

Frontiers Microbially-accelerated consolidation of oil ...

2014-3-21  Dispersed clay particles in mine tailings and soft sediments remain suspended for decades, hindering consolidation and challenging effective management of these aqueous slurries. Current geotechnical engineering models of self-weight consolidation of tailings do not consider microbial contribution to sediment behavior, however, here we show that microorganisms indigenous to oil sands tailings ...

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Suncor speeds tailings-pond reclamation Oil Gas

2009-10-23  Suncor speeds tailings-pond reclamation. ... inked a deal for the sale of subsidiary Equinor Refining Denmark AS—including its 107,000-b/d refinery at Kalundborg, Denmark

More

(PDF) Mycorrhizal biotechnology for reclamation of oil ...

Mycorrhizal biotechnology for reclamation of oil sand composite tailings and tailings land in Alberta. Ali Quoreshi. Jean-Luc Jany. Ali Quoreshi. Jean-Luc Jany. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 35 Full PDFs related to this paper.

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FLSmidth to deliver unique dry stacking tailings solution

2020-12-22  Some of the advantages include: Water reclamation and reduced water costs, a minimised tailings management facility (TMF) area, a reduction in closure costs at

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From Tailings to Treasure? Miners Make Money

2015-5-7  Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources. It expects to recover 58 kg of gold per month, and has enough slimes to last until 2025. Goldfields has also developed new technology for a tailings retreatment plant, and processes 12,000 tons of current ...

More

Best practice report on environmental protection and

2019-12-11  (2021), Sweden (2022), Ireland, Italy, UK (2025), Finland, Netherlands (2029), Denmark, Portugal (2030) go ahead. In Germany, the last hard coal mine closed at the Ruhr Area in 2018 after nearly 200 years of deep mining. In the same year, the phase-out of

More

35 No. 9 Uranium Extraction Technology

2010-1-14  DENMARK DOMINICAN REPUBLIC ECUADOR EGYPT EL SALVADOR ESTONIA ETHIOPIA FINLAND FRANCE GABON GERMANY GHANA ... 10.10. Decommissioning, reclamation and covers 272 10.11. Monitoring of tailings impoundment sites 273 10.12. Corporate responsibility and ongoing research 273 ... Neutralization of tailings pulp and liquids 303 References 304 CHAPTER 13 ...

More

Addition of recyclable biochar, compost and fibre clay

2020-9-15  Mine closures require landscape reclamation to reduce the environmental risks of tailings fields. However, information about the feasibility of recyclable waste materials as a growth medium layer for the cover systems of mine tailings and their effects on vegetation restoration and reforestation success is scant especially in the boreal climate. This study examines the use of various ...

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Microbiological and Geochemical Characterization of ...

Tailings in the Upper Clark Fork Valley and in other historic mining areas were fluvially deposited over many decades (8, 32). Consequently, Silver Bow Creek floodplain sediments are a heterogeneous mixture of tailings, silts, clays, fine- to coarse-grained sands, and gravel mixed with layers high in

More

Waste treatment - ASCE

Tailings Impoundment Closure: It's All in the Eye of the Beholder Since the early 1900s, the mining and power-generation industries have disposed of tailings and other waste products using impoundments. The term "tailings" typically refers to the fine-grained waste product...

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Mining Law 2021 Laws and Regulations Ghana ICLG

2020-10-9  These include obligations to ensure that tailings storage facilities are stabilised in the long term. The Environmental Assessment Regulations, 1999 (L.I. 1652) require that there be (a) a reclamation plan, and (b) a bond to secure implementation of the work plan approved by the Environmental Protection Agency.

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