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.
Dewatering of mine tailings using eletrokinetic geosynthetics Article PDF Available. ... electrokinetic dewatering was unlikely to be of benefit in. highly saline soils because of the drop in.
Laboratory evaluation of the potential for electrokinetic belt filter press dewatering of kimberlite slimes Lamont-Black et al. 2007 Presented at the 10th International conference on Paste and Thickened tailings, Perth 2007. Dewatering of mine tailings using electrokinetic geosynthetics
4/4/2015· Laboratory device to characterize electrokinetic geocomposites for fluid fine tailings dewatering. Sébastien Bourgès-Gastaud, a b Guillaume Stoltz, b Patricia Dolez, c Éric Blond, c Nathalie Touze-Foltz b. a Afitex, 13-15, rue Blériot, 28300 Champhol, France. b Irstea, HBAN, INEGE, 1, rue Pierre-Gilles de Gennes, 92761 Antony Cedex, France.
electrokinetic dewatering of gypsum containing tailings Julie Q. Shang Mine tailings are the end product of mining and mineral processing after the mineral has been extracted, which are discharged ...
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 effectiveness and efficiency of EK dewatering of MFT, a man-made geomaterial.
Jajuee et al.  patented a continuous electrokinetic process for dewatering oil-sand tailings, which consisted of an auger and perforated tube.The auger shaft and the tube served as the anode and cathode, respectively. Laboratory-scale experiments performed on a 2.54 cm diameter tube with an electric field of 40 V/cm demonstrated EKD from an initial solids content of 35 wt% to a final solids ...
ELECTROKINETIC SOLUTIONS (EKS)—EKS, Inc. a sustainable technology company, has developed the ElectroKinetic Solutions – Dewatering Technology (EKS-DT). This innovative technology is applicable to a wide range of industrial situations where difficult-to-dewater slurries, sludges and unstable clay soil conditions are present.
7/23/2015· A study on electrokinetic dewatering of oil sands tailings Open PDF. Environmental Geotechnics. E-ISSN 2051-803X. Volume 1 Issue 2, May 2014, ... In the second series, the model tests were designed and carried out to investigate the feasibility of EK dewatering on oil sands tailings. The performance of the EK dewatering was compared under two ...
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. • …
11/29/2018· This electrokinetic manipulation disrupts the electrical forces that stabilize tailings. This causes the particles to aggregate (or "collapse") and cause dewatering. The findings were recently published in the Drying Technology Journal.
The results point to a potentially powerful technique for reducing the water content of tailings ponds in situ, thus increasing storage space, improving stability, and facilitating closure of these facilities.Key words: tailings, dewatering, electroosmosis, electrokinetic geotextiles, consolidation.
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.
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 ...
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
those tailings contain fine solids (in the micron-meter range) and significant fraction of clay minerals, the thickening and dewatering processes become increasingly difficult and time consuming. Electrokinetic dewatering of mine tailings has been studied since 1960s. Applications included dewatering of coal and sand washeries and tailings
Laboratory Evaluation of Electrokinetic Dewatering of Bauxite Tailings L. De Leon Ferreira, R.C. Gomes Abstract. The mining tailings disposal system is often associated to the construction of large retaining systems, either for the great volume of materials generated by industrial plants or for the impossibility or difficulty of grants for new ...
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.
8/8/2019· 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 ...
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 ...
An apparatus and method are described for reducing the liquid content of a material comprising a particulate/liquid dispersion or suspension, in particular comprising a dispersion or suspension of inorganic particles being a byproduct of mining, manufacturing or other industrial processes. The apparatus comprising a receiving zone to contain the material, at least one pair of electrodes spaced ...
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.
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 ...
Chapter 3: Electrokinetic dewatering of oil sands tailings: data regression and saturation analysis The contributions of the co-authors are: Yu Guo: Carried out the experiments, analyzed the results of the laboratory study and wrote the draft and final version of the …
Guo, Y & Shang, JQ 2013, 'A study on electrokinetic dewatering of oil sands tailings', Environmental Geotechnics, vol. 1, issue 2, pp. 121–134. Lockhart, NC 1986, 'Electro-dewatering of fine suspensions', in CSIRO Division of Fossil Fuels (ed.), Advances in Solid-Liquid Separation, pp. 241–274.
EKS is proud of the recognition the industry is giving it's ElectroKinetic Solutions – Dewatering Technology (EKS-DT) and believe EKS-DT can help oil sand producers better manage oil sand tailings.
management of coarse and fine tailings using thin lift fines drying, thickening, centrifugation, CO 2 coagulation, water capping, etc. (Fair, 2014). More recently, electrokinetic drainage geocomposites have been developed as a solution to accelerate the dewatering of MFT and processed tailings …
Dewatering of Sewage Sludge. A step change in belt press dewatering performance has been achieved by combining conventional belt press technology with EKG. This breakthrough adds the dewatering effect of electroosmosis to that of conventional hydraulic dewatering. Read more... Dewatering of Mine Tailings
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