• flocculation of lime-treated oil sands tailings

    Flocculation of lime-treated oil sands tailings

    After each addition the sample was inverted end-over-end five times and inspected. Table 1 lists the polymers screened, with information on molecular weight and charge density where available. Fuel 1996 Volume 75 Number 3 281 Flocculation of lime-treated oil sands tailings." H. A. Hamza et al. Table 2 Lime and polymer demands of CHWEP and OHWEP

  • flocculation of lime-treated oil sands tailings, fuel 10

    Flocculation of lime-treated oil sands tailings, Fuel 10

    Flocculation of lime-treated oil sands tailings Flocculation of lime-treated oil sands tailings Hamza, H.A.; Stanonik, D.J.; Kessick, Michael A. 1996-02-01 00:00:00 Whole oil sands tailings resulting from water-based bitumen extraction processes can be co-flocculated, after treatment with slaked lime, with low dosages of a high molecular weight anionic polyacrylamide.

  • flocculation of lime-treated oil sands tailings

    Flocculation of lime-treated oil sands tailings

    geotechnical properties, tailings treatment: Abstract: Whole oil sands tailings resulting from water-based bitumen extraction processes can be co-flocculated, after treatment with slaked lime, with low dosages of a high molecular weight anionic polyacrylamide. The resulting composite sand-clay particles settle and dewater rapidly to a stackable

  • understanding two-step polymer flocculation of oil sands

    Understanding Two-step Polymer Flocculation of Oil Sands

    widely exploited procedure for flocculation of oil sands tailings and mineral tailings, the two-step flocculation with anionic Magnafloc 1011 (MF) and cationic chitosan showed an enhanced capacity in the treatment of oil sands tailings by improving the quality of released water, i.e. high clarity and low solid content, yet retaining a high settling efficiency. This improved flocculation

  • enhancing oil sands tailings treatment by lime addition

    Enhancing Oil Sands Tailings Treatment by Lime Addition

    ii Abstract This research aims to improve oil sands tailings treatment by applying a combination of quick lime (calcium oxide) and anionic or cationic polymers in the flocculation process.

  • a two-step flocculation process on oil sands tailings

    A two-step flocculation process on oil sands tailings

    However, little effort has been devoted to exploring a multi-component flocculation procedure on oil sands tailings treatment. Meanwhile, most polymer flocculants used are synthetic and little attention has been paid to usage of biopolymers as effective flocculants for oil sands tailings treatment.

  • seminar “flocculation of mature fine tailings: is there

    Seminar “Flocculation of Mature Fine Tailings: Is there

    Seminar “Flocculation of Mature Fine Tailings: Is there a Solution in Sight for the Canadian Oil Sands Environmental Challenge?” by Joao B.P. Soares, Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB

  • a two-step flocculation process on oil sands tailings

    A two-step flocculation process on oil sands tailings

    However, little effort has been devoted to exploring a multi-component flocculation procedure on oil sands tailings treatment. Meanwhile, most polymer flocculants used are synthetic and little attention has been paid to usage of biopolymers as effective flocculants for oil sands tailings treatment.

  • (pdf) dewatering of athabasca oil sands fine tails using

    (PDF) Dewatering of Athabasca oil sands fine tails using

    Whole oil sands tailings resulting from water-based bitumen extraction processes can be co-flocculated, after treatment with slaked lime, with low dosages of a high molecular weight anionic

  • flocculation and dewatering of kaolinite suspensions

    Flocculation and dewatering of kaolinite suspensions

    The development of a method to consolidate and dewater Athabasca oil sands mature fine tailings (MFT) is one of the major challenges facing Alberta’s oil sands industry. This thesis presents studies performed on the flocculation and dewatering of kaolinite suspensions (the

  • news + publications coanda research & development

    News + Publications Coanda Research & Development

    2016-10-10· Abstract. Inline flocculation is a promising technique for the dewatering and remediation of oil sands tailings. In recent years the industry has undertaken a number of exploratory programs aimed at defining the process operating windows that will produce flocculated materials with the

  • enhanced flocculation of oil sands mature fine tailings

    Enhanced Flocculation of Oil Sands Mature Fine Tailings

    The Alberta Energy Regulator, however, has approved Directive 085 for fluid tailings management for oil sands mining projects, where it states some minimum acceptable criteria for treated tailings before they are ready to be reclaimed (such as minimum undrained shear strength, solids content, and sand to fines ratio), which is not helpful for

  • a comprehensive control scheme for dynamic inline

    A COMPREHENSIVE CONTROL SCHEME FOR DYNAMIC INLINE

    A COMPREHENSIVE CONTROL SCHEME FOR DYNAMIC INLINE FLOCCULATION OF OIL SANDS TAILINGS Scott E. Webster, Wayne A. Brown, Babak Derakhshandeh, Neville Dubash, Clara Gomez, and Christian N. Veenstra Coanda Research and Development Corporation, Burnaby, British Columbia, Canada Abu Junaid Shell Canada Limited, Calgary, Alberta, Canada ABSTRACT Inline flocculation

  • paper: polymer aids for flocculation of oil sands tailings

    Paper: Polymer Aids for Flocculation of Oil Sands Tailings

    Cite As: Wang, X, Xu, Z & Masliyah, JH 2009, 'Polymer Aids for Flocculation of Oil Sands Tailings', in R Jewell, AB Fourie, S Barrera & J Wiertz (eds), Proceedings of the Twelfth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 93-100.

  • dynamic flocculation canada’s oil sands innovation

    Dynamic Flocculation Canada’s Oil Sands Innovation

    To achieve more consistency in the flocculated material, Albian Sands (formerly Shell and now acquired by Canadian Natural) led a project with Suncor and Teck to explore dynamic flocculation, which allows for more control over the mixing energy and intensity used, based on changes in operational conditions.

  • international oil sands tailings conference 2018

    International Oil Sands Tailings Conference 2018

    2019-07-06· This conference is the premier platform for oil sands operators, consultants, regulators and academia to present and learn about oil sands tailings management state of practise, recent technological advancements and novel research. The scope of this year’s event included invited speakers and select technical presentations on topics including

  • tailings management canada’s oil sands innovation

    Tailings Management Canada’s Oil Sands Innovation

    COSIA’s Tailings Environmental Priority Area (EPA) is focused on improving the management of oil sands tailings. Tailings are the sand, silt, clay and water found naturally in oil sands that remain following the mining and bitumen extraction process.

  • advanced polymer flocculants for solid–liquid separation

    Advanced Polymer Flocculants for Solid–Liquid Separation

    7 Aggregate Structure Quantification and Modeling the Floc Formation in Tailings 7.1 Flocculation Monitoring Using Population Balance Approach. Innovative polymer flocculants for solid–liquid separation in oil sands tailings are useful only if the flocculation could be adequately optimized and monitored for various conditions. It is plausible

  • oil sands tailings 101 industry solutions

    Oil Sands Tailings 101 Industry Solutions

    Expand your knowledge on tailings management. January 22 23, 2020. Join us for a 2-day workshop hosted by Dr. Heather Kaminsky, NSERC Industrial Research Chair for Colleges in Oil Sands Tailings Management and Andrea Sedgwick, Ledcor Applied Research Chair at NAIT's Centre for Oil Sands

  • oil sands mettler toledo

    Oil Sands METTLER TOLEDO

    Optimized solids flocculation is critical to ensure efficient water recycle and tailings settling. By optimizing the solids flocculation one can speed water recover and increase the mature fine tailings (MFT) ratio. Successful water recycle requires flocculation and the capture of

  • dewatering wet tailings generated from oil sands

    Dewatering Wet Tailings Generated From Oil Sands

    Treating the oil sands tailings generated large pores in the oil sands tailings, which benefit water removal from the tailings. The Project was divided into six phases which, when combined, represented a holistic approach to the fundamental aspects of flocculation and dewatering of tailings.

  • application of rhamnolipid and microbial activities

    Application of Rhamnolipid and Microbial Activities

    Application of Rhamnolipid and Microbial Activities for Improving the Sedimentation of Oil Sand Tailings Soroor Javan Roshtkhari, PhD. Concordia University, 2016 Densification of oil sand tailings deposited in the tailing ponds and recovering water from them are two major challenges issues in the oil sands surface mining industry. A small

  • impact of flocculation-based dewatering on the shear

    Impact of flocculation-based dewatering on the shear

    Impact of flocculation-based dewatering on the shear strength of oil sands fine tailings Nicholas Beier, a Ward Wilson, a Adedeji Dunmola, b David Sego a a Department of Civil and Environmental Engineering, University of Alberta, 3-017, Markin/CNRL Natural Resources Engineering Facility, Edmonton, AB T6G 2W2, Canada.

  • dewatering oil sands tailings with degradable polymer

    Dewatering Oil Sands Tailings with Degradable Polymer

    We synthesized hydrolytically degradable cationic polymers by micellar radical polymerization of a short-chain polyester macromonomer, polycaprolactone choline iodide ester methacrylate (PCL2ChMA) with two polyester units, and used them to flocculate oil sands mature fine tailings (MFT). We evaluated the flocculation performance of the homopolymer and copolymers with 30 mol % acrylamide (AM

  • effect of various treatments on consolidation of oil sands

    Effect of various treatments on consolidation of oil sands

    Introduction. Oil sands tailings have been produced for 50 years and now cover an area of 220 km 2 ().The volume of fluid fine tailings (FFT) stored in tailings ponds is approaching one billion cubic metres ().The industry currently operates under a zero fluid discharge criteria; therefore, FFT and process water cannot be released off site and have to be stored in tailings ponds ().

  • instrumentation and control for in-line flocculation

    Instrumentation and Control for In-Line Flocculation

    Fine fluid tailings (FFT) flocculation is a technique that improves the rapid dewatering and ultimate remediation of oil sands fine tailings. Typically, FFT is mixed with flocculant in a static mixer, which does not allow for any modifications to the treatment process to respond to changes in operating conditions or feed characteristics. The

  • effect of salt on the flocculation behavior of nano

    Effect of Salt on the Flocculation Behavior of Nano

    These particles are present in the original ore and become mobilized into the water phase during the oil separation process. In this work, the nano sized particles have been separated from the bulk tailings and subjected to a fundamental study of their flocculation behavior in model tailings water. Photon correlation spectroscopy and a

  • paper: the effect of preconditioning of tailings prior to

    Paper: The effect of preconditioning of tailings prior to

    Abstract: Improving the dewatering characteristics of high solids tailings streams, by the addition of high molecular weight anionic polyacrylamides is known to be operationally challenging. This is particularly true in applications where a secondary flocculation occurs after primary treatment and thickening of a tailings stream for example, underflow from a thickener or the dredging and

  • a two-step flocculation process on oil sands tailings

    A two-step flocculation process on oil sands tailings

    In this study, a new flocculation process was developed for the treatment of oil sands tailings by using two oppositely charged polymers, i.e. an anionic polyacrylamide and a natural cationic biopolymer, chitosan. The new process was able to not only improve the clarity of supernatant after settling but also achieve a high settling efficiency

  • coagulation-fluocculation pretreatment of oil sands

    Coagulation-fluocculation pretreatment of oil sands

    IN: Proceedings of the First International Oil Sands Tailings Conference. Sego D.C. (Ed.). December 7-10, 2008 Edmonton, Alberta. University of Alberta Geotechnical Center and Oil Sands Tailing Research Facility Edmonton, Alberta. pp. 232-237.

  • flocculation and dewatering of mature fine tailings

    Flocculation and Dewatering of Mature Fine Tailings

    2017-05-17· Multifunctional CO 2 -switchable polymers for the flocculation of oil sands tailings. Journal of Applied Polymer Science 2019, 136 (22),47578. DOI: 10.1002/app.47578. Chunli Song, Hongyan Li, Yikai Yu.

  • research — group of applied macromolecular engineering

    Research — Group of Applied Macromolecular Engineering

    Inline Flocculation of Oil Sands Tailings. Since the ongoing extraction of bitumen continues, accumulation of oil sands tailings continue to increase and require expansion of tailings storage areas. We are addressing this challenge by developing inline flocculation system that can continuously flocculate the tailings. Inline static mixers that

  • flocculation of the syncrude fine tailings, international

    Flocculation of the Syncrude fine tailings, International

    2000-09-01· Flocculation of the Syncrude fine tailings Flocculation of the Syncrude fine tailings Sworska, A; Laskowski, J.S; Cymerman, G 2000-09-01 00:00:00 In a new process of fine tailings disposal, after extraction of bitumen from Athabasca oil sands, the slurry, which contains clays, sand and a small amount of bitumen, is flocculated and thickened into a paste.

  • development of the next-generation of dewatering

    DEVELOPMENT OF THE NEXT-GENERATION OF DEWATERING

    OF DEWATERING TECHNOLOGIES FOR MATURE FINE TAILINGS (MFTs) FROM OIL SANDS PROCESSING . M.A.Sc. Thesis F. Zafari McMaster Chemical Engineering i DEVELOPMENT OF THE NEXT-GENERATION OF DEWATERING TECHNOLOGIES FOR MATURE FINE TAILINGS (MFTs) FROM OIL SANDS PROCESSING By FARHAD ZAFARI, B. ENG A Thesis Submitted to the

  • al hyndman: oil sands tailings, challenges to managing

    Al Hyndman: Oil Sands Tailings, Challenges to Managing

    2014-01-27· In this introduction to the oil sand industry presentations at the Tailings and Mine Waste Conference, Al Hyndman provides a succinct and informative summary of the challenges in oils sands

  • rheology for deposition control of polymer-amended

    Rheology for deposition control of polymer-amended

    2017-05-23· The authors would like to acknowledge Shell Canada for providing MFT and polymer samples and Oil sand Tailings Research Facility (OSTRF). Funding was provided by the Canadian Oil Sands Innovation Alliance (COSIA) and the Natural Science and Engineering Research Council of Canada (NSERC).

  • publications faculty of engineering

    Publications Faculty of Engineering

    Proceedings of the Fourth International Oil Sands Tailings Conference, Lake Louise, AB: December 7-10, 2014. Olmedo, N. and Lipsett, M. 2014. Soil parameter estimation and sample collection using an unmanned ground vehicle. Proceedings of the Fourth International Oil Sands Tailings Conference, Lake Louise, AB: December 7-10, 2014.

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