electrokinetic dewatering tailings

electrokinetic dewatering tailings

Electrokinetic Dewatering of Mine Tailings Using DSA ...

electrokinetic dewatering of sand washery tailings and reported favorable dewatering with a low energy consumption of 1 kWh per dry ton. Bayat et al. [9] studied the electrokinetic dewatering of fine glass sand tailings (d 80 finer than 2 μm) in the laboratory, where the solid content was increased from

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Electrokinetic dewatering of mine tailings from ...

Electrokinetic dewatering of mine tailings from hydrometallurgical processes JQ Shang and Y Xu 278 Paste 2019, Cape Town, South Africa Figure 1 Electroosmotic cell setup Table 3 The testing conditions and tailings properties Parameter Unit Amount or description Tailings bulk unit weight kN/m3 15.0 Tailings water content

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ELECTROKINETIC DEWATERING OF GYPSUM CONTAINING

Electrokinetic dewatering of mine tailings has been studied since 1960s. Applications included dewatering of coal and sand washeries and tailings from mineral recovery (Lockhart 1986). The treatments were implemented in tailings disposal ponds, and underground mines (Kelsh and Sprute

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Apr 26, 2012  It is concluded that the Eneabba West Mine tailings are feasible for electrokinetic dewatering. This is demonstrated by the electroosmotic permeability in the range of 3.2 to 4.7 x 10 –9 m 2 /sV; the electrokinetic consolidation ratio in the range of 0.1 to 20 m/V; and the coefficient of electrokinetic water transport in the range of 5.1 to 6 ...

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Jan 01, 2017  The use of electrokinetic geocomposites was tested for the consolidation of oil sands mature fine tailings (MFT). • Efficient dewatering was obtained under 20 kPa normal stress and electro-osmosis.. MFT shear strength improved from nearly 0 kPa to a mean value of 25 kPa.. The energy required was 10.6 kW h per dry tonne.

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Paper: Electrokinetic dewatering of mine tailings from ...

Shang, JQ Mohamedelhassan, E 2001, ‘Electrokinetic dewatering of Eneabba West mine tailings: An experimental study.’ Proceedings of the Soft Ground Technology Conference, no. 112, pp, 346–350.

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A study on electrokinetic dewatering of oil sands tailings ...

Jul 23, 2015  Electrokinetic and chemical treatment of oil sands mature fine tailings: dewatering and strengthening Authors: Yu Guo , Julie Q. Shang , Joon Kyu Lee , Yixuan Wang Source: Proceedings of the Institution of Civil Engineers - Ground Improvement, Volume 173, Issue 3 , 1 Aug 2020 (127–142)

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Electrokinetic Dewatering of Mine Tailings Using DSA ...

electrokinetic dewatering of sand washery tailings and reported favorable dewatering with a low energy consumption of 1 kWh per dry ton. Bayat et al. [9] studied the electrokinetic dewatering of fine glass sand tailings (d 80 finer than 2 μm) in the laboratory, where the solid content was increased from

More

ELECTROKINETIC DEWATERING OF GYPSUM CONTAINING

Electrokinetic dewatering of mine tailings has been studied since 1960s. Applications included dewatering of coal and sand washeries and tailings from mineral recovery (Lockhart 1986). The treatments were implemented in tailings disposal ponds, and underground mines (Kelsh and Sprute

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Electrokinetic Dewatering of Diamond Mine Tailings

Electrokinetic dewatering provides a potentially attractive technique for dewatering of tailings both as part of the disposal process or in-situ after disposal. Studies in South Africa have confirmed that this technique is both possible and economic for the dewatering of diamond tailings in-situ after disposal, (Fourie et al 2006).

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Electrokinetic dewatering of Turkish glass sand plant ...

In this study, the dewatering of glass sand plant tailings from Mersin, Turkey was investigated using an electrokinetic technique. The particle size (d(80)) of the solid waste material tested was less than 0.020 mm and consisted mainly of silica, orthoclase, alumina, potassium and iron oxides.

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Paper: Electrokinetic dewatering of mine tailings from ...

Shang, JQ Mohamedelhassan, E 2001, ‘Electrokinetic dewatering of Eneabba West mine tailings: An experimental study.’ Proceedings of the Soft Ground Technology Conference, no. 112, pp, 346–350.

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ELECTROKINETIC DEWATERING OF GYPSUM CONTAINING TAILINGS

The tailings are characterized for the geotechnical, physical, chemical and mineralogical properties first, and then electrokinetic cell tests are carried out to measure the coefficient of electroosmotic permeability, a key parameter on the response of tailings to electrokinetic dewatering.

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A study on electrokinetic dewatering of oil sands tailings ...

Electrokinetic and chemical treatment of oil sands mature fine tailings: dewatering and strengthening Authors: Yu Guo , Julie Q. Shang , Joon Kyu Lee , Yixuan Wang Source: Proceedings of the Institution of Civil Engineers - Ground Improvement, Volume 173, Issue 3 , 1 Aug 2020 (127–142)

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(PDF) Laboratory Evaluation of Electrokinetic Dewatering ...

PDF The mining tailings disposal system is often associated to the construction of large retaining systems, either for the great volume of materials... Find, read and cite all the research you ...

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Improved estimates of power consumption during dewatering ...

Apr 01, 2010  Fig. 13 confirms that electrokinetic dewatering is much more effective in the mineral sands tailings than in the diamond tailings, as was found in the laboratory tests reported earlier. The values of initial and final water contents (averaged from four profiles taken using the sampling probe mentioned before) were 158 and 75%, respectively for ...

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EKS – ElectroKinetic Solutions

In August 2019, Canada’s Minister of Natural Resources announced an investment of close to $2 million for ElectroKinetic Solutions Inc. to field test a new dewatering technology that will speed up the process to reclaim new and legacy oil sands mine tailings sites.

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"Electrokinetic Dewatering of Oil Sands Tailings" by Yu Guo

Oil sands tailings are the final product of oil sands processing and in the form of slurry with very low solid content. After sedimentation, due to a low hydraulic conductivity of the tailings, both dewatering and consolidating the tailings are difficult. Since electrokinetic (EK) is an effective method to consolidate low permeability soils, the objective of this study is to assess the ...

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Electrokinetic Dewatering of Mine Tailings Using DSA ...

The water discharged by electrokinetic treatment was equivalent to approximately 56% of the tailings pore volume over 174 h (EK test 1). 4) Polarity reversal has been proven to ... Home Other. Electrokinetic Dewatering of Mine Tailings Using DSA Electrodes . 12 ...

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Electrolysis: An Innovative Technique to Desaturate Tailings

electrokinetic dewatering of waste sludge. Colloids and Surfaces A-Physicochemical and Engineering Aspects 210(2-3): 231-241. 17. Aguero G (1929) Formacion de Depositos de Relaves en el Mineral del Teniente. Anales del Institute de Ingenieros de Chile 5: 164-187. 18. Dobry R, Alvarez L (1967) Seismic Failures of Chilean Tailings Dams.

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Environmental Pollution

Powered Electrokinetic Remediation for Treatment to Soil Polluted with Organic Compounds,” and “Electrokinetic Processes: Directions for Future Research and Constraints”) and describes how the scale-up of these technologies has to be faced, real applications of the technology, and how generated gases should be processed.

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Electrokinetic Dewatering of Mine Tailings Using DSA ...

) in the electrokinetic dewatering of mine tailings slurries. Characterization of the tailings is presented, followed by the results of electrokinetic dewatering, including the gradually increased and decreased voltages applied during the treatment, polarity reversal, and surcharge pressure applied to tailings.

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Dewatering of mine tailings using electrokinetic ...

This paper describes a study using newly developed electrokinetic geosynthetics (EKGs) as electrodes for the in situ dewatering of mine tailings. Laboratory tests were undertaken on mineral sands tailings in both a purpose-built testing cell and a laboratory testing tank using EKGs, followed by an outdoor experiment in a tank containing ...

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Electrokinetic Dewatering of Ultrafine Coal and Coal Tailings

The four tests on Wambo tailings all started from different initial solids content values, ranging from 30 to 45%, and effective electrokinetic dewatering was achieved in all four cases. The tests in the EO cell confirmed the data obtained from the tub tests, with the Dawson tailings again performing poorly relative to the other five materials.

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Prototype Testing on Oil Sands Tailings: ElectroKinetic ...

This project involves field testing of the ElectroKinetic Solutions-Dewatering Technology (EKS-DT) process. The EKS-DT process will deploy electrodes to dewater oil sands and other mine tailings, which shows the potential of faster reclamation including legacy mined-out

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Dewatering Sludge Using Electrokinetic Geosynthetics ...

Sewage sludge lagoons, although smaller than tailings ponds still pose an environmental hazard or impede redevelopment. Several researchers have shown that electrokinetic dewatering of sludge is more effective than conventional hydraulically driven methods.

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Laboratory experiments in electrokinetic densification of ...

Laboratory experiments in electrokinetic densification of mill tailings. II. Application to various types and classifications of tailings

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FAQ – EKS - ElectroKinetic Solutions

Electrophoresis and electro-osmosis work together to accelerate dewatering. The EKS-DT process involves two stages. During Stage 1, slurries are dewatered to the point that a soil matrix is formed. Stage 2 involves further dewatering of the soil until a desired water content/strength is achieved. The physics of Stage 1 differ somewhat from ...

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Electrolysis: An Innovative Technique to Desaturate Tailings

electrokinetic dewatering of waste sludge. Colloids and Surfaces A-Physicochemical and Engineering Aspects 210(2-3): 231-241. 17. Aguero G (1929) Formacion de Depositos de Relaves en el Mineral del Teniente. Anales del Institute de Ingenieros de Chile 5: 164-187. 18. Dobry R, Alvarez L (1967) Seismic Failures of Chilean Tailings Dams.

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Electrokinetic geosynthetics - SlideShare

Dewatering of mine tailings Disposal of kimberlite slimes Dewatered tailings (78%) dry solids. 16. Conclusion o Active geo synthetics in the form of EKG materials open up a new range of applications for geo synthetics. o EKG applications relate to a number of main drivers including legal requirements, climate change, the need to reduce carbon ...

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Chemical Engineering at the University of Florida

[xii] J. Q. Shang, “Dewatering of Mine Tailings using Electrokinetic Geosynthetics,” Canadian Geotechnical Journal, 34 (1997), 78-86. [xiii] Bozena Paczkowska, “Electroosmotic Introduction of Methacrylate Polycations to Dehydrate Clayey Soil,” Canadian Geotechnical Journal, 42 (2005), 780-786.

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NIOSHTIC-2 Publications Search - 10009742 - Electrokinetic ...

Electrokinetic Dewatering and Consolidation of Mine Mill Tailings. Authors ... Unclassified siliceous mill tailings containing slimes mixed with the coarser sand normally used for hydraulic backfill, new slimes pumped from an underground collection sump into a working stope, and year-old slimes impounded behind a temporary dam in an unused tail ...

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Control System And An Adaptive Electrokinetic Dewatering ...

An adaptive electrokinetic dewatering system for dewatering slurry and soil deposits, including tailings deposits and a control system therefor. The control system automatically determines an optimal applied power specification, including sets of power parameters to be applied to the deposit being dewatered and when to apply each set of power ...

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Abstract: Evolutionary Development for Electrokinetic ...

Evolutionary Development for Electrokinetic Dewatering of Phosphate Mine Tailings Tuesday, May 13, 2014: 09:10 Bonnet Creek Ballroom II, Lobby Level (Hilton Orlando Bonnet Creek)

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NIOSHTIC-2 Publications Search - 10001818 - Laboratory ...

This report describes Bureau of Mines laboratory test results in electrokinetic dewatering and consolidation of metal-mine tailings. Tailings were placed in 0.3-Ft3 plexiglass models, and DC potential was applied until dewatering ceased. Time-oriented measurements of water removal, changes in resistivity, and power consumption were recorded during the dewatering process.

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