Nature and fate of oil sands fine tailings
- Western Research Centre, Devon, Alberta (Canada)
- Suncor Oil Sands Group, Alberta (Canada)
- Syncrude Canada Ltd., Edmonton, Alberta (Canada)
The chemical and physical properties of clay suspensions produced during oil production front oil sands are described. With a composition of approximately 70 wt% water (with some unrecovered bitumen) and 30 wt% solids (>90% less than 44 {mu}m in size), these clay suspensions consolidate very slowly. Clay aggregate or floc morphology has been shown to be a function of the water chemistry and can be manipulated to produce a tailings suspension that is easier to consolidate and dewater. Commercial oil sands processing has been going on in northeastern Alberta since 1967, and in that time approximately 250 million m of this difficult to dewater clay suspension has been produced. The reclamation options for this material (mature fine tailings) on a commercial scale are also outlined. 84 refs., 36 figs., 3 tabs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 472148
- Journal Information:
- Advances in Chemistry Series, Journal Name: Advances in Chemistry Series Journal Issue: 251; ISSN 0065-2393; ISSN ADCSAJ
- Country of Publication:
- United States
- Language:
- English
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