Improved dewatering characteristics of uranium tailings through controlled neutralisation for paste disposal

Kuyucak, Nural; Primeau, Pierre; Labelle, Marc-André; Palkovits, Frank

doi:10.36487/acg_rep/1063_27_kuyucak

Proceedings of the Thirteenth International Seminar on Paste and Thickened Tailings 2010

DOI: 10.36487/acg_rep/1063_27_kuyucak

|View full text |Cite

Improved dewatering characteristics of uranium tailings through controlled neutralisation for paste disposal

Nural Kuyucak¹,

Pierre Primeau²,

Marc-André Labelle³

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Publication Types

Select...

Other1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…to 5(Onuaguluchi and Eren 2013;Kuyucak et al 2010;Jeeravipoolvarn 2010 andMcCarthy 2004), though for soils commonly encountered in geotechnical practice (inorganic materials of natural genesis) the range is usually restricted between 2.6 and 2.7. For oil sands tailings, determination of specific gravity is somewhat controversial due to the effect of attached residual bitumen on the solids phase (COSIA 2014).…”

mentioning

confidence: 99%

Microstructure and macroscopic behaviour of polymer amended oil sands mature fine tailings

Bajwa¹

View full text Add to dashboard Cite

After several years following deposition, oil sands fine tailings settle to a solids content of 30 ~ 40% and are subsequently termed mature fine tailings (MFT).Once they have reached this state, MFT do not appreciably dewater, even after several decades. The particle size and dispersed structure of the fines (and possibly residual bitumen), negatively impacts the consolidation behavior of MFT.Several technologies currently being trialed to accelerate dewatering of MFT, such as in-line flocculation, centrifuge, and tank thickening, flocculate the tailings using a polymer. The addition of polymer results in substantial dewatering in the short term (24 hours) after in-line flocculation, and increases dewatering in tank thickening and centrifugation. This is well understood in industry. However, the polymer may also change longer term dewatering behaviour by potentially changing the consolidation characteristics and water-retention characteristics of the tailings.To assess the effect of polymer on all aspects of dewatering behaviour, column experiments simulating deposition of in-line flocculated tailings were undertaken for different times, different thicknesses, and under different environmental conditions. This allowed for the study to separate initial dewatering from selfweight consolidation, subsequent desiccation, and further consolidation of desiccated tailings when they are buried by fresh deposition. The behaviour was iv analyzed by tracking fabric changes using mercury intrusion porosimetry and scanning electron microscopy.Differences in dewatering behaviour following initial self-weight consolidation due to differences in polymer dose appeared to be minimal. Consolidation behaviour of previously desiccated tailings converged to the same properties by 80 kPa vertical effective stress. Optimizing for dose should therefore be done in terms of self-weight consolidation. It was observed that optimizing for yield stress may yield a higher optimal dose than for dewatering.

show abstract

mentioning

confidence: 99%

Microstructure and macroscopic behaviour of polymer amended oil sands mature fine tailings

Bajwa¹

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Improved dewatering characteristics of uranium tailings through controlled neutralisation for paste disposal

Cited by 1 publication

References 0 publications

Microstructure and macroscopic behaviour of polymer amended oil sands mature fine tailings

Microstructure and macroscopic behaviour of polymer amended oil sands mature fine tailings

Contact Info

Product

Resources

About