Thickening of Oil Sands Composite Tailings
Bibliographic record
Abstract
The current oil sands tailings management strategy is to cyclone the tailings stream and combine the cyclone underflow with cyclone overflow which has been allowed to settle for several years in a tailings pond. Gypsum is added to this mixture and a nonsegregating tailings called Composite Tailings (CT) is produced with a solids content of about 60% and a fines content of 20%. The CT is pumped to a disposal area where it is allowed to consolidate under self weight. This paper reports on trials to further increase the solids content of CT using a thickener. A research thickener, 1 m diameter with a 1 m depth, was used to investigate thick- ening the CT to a solids content sufficient to support reclamation methods. The thickener is equipped with pore pressure transducers down the side of the thick- ener and pore pressure and total stress transducers in the base of the thickener to fully evaluate the geotechnical processes occurring in the thickener. The pressure and stress transducers in conjunction with sampling allow total stress and effec- tive stress profiles to be determined at any time during the thickening test proce- dure. 118 Paste 2005, Santiago, Chile Thickening of Oil Sands Composite... Chalaturnyk, R.J. et al.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".