Improving Oil Sands Processability Using a Temperature-Sensitive Polymer
Bibliographic record
Abstract
A temperature-sensitive polymer, poly(N-isopropylacrylamide), was tested as a process aid to process a low-grade, high-fines oil sand ore. Two sets of bitumen extraction tests were carried out. In test set I, both oil sands slurry conditioning and bitumen flotation were conducted at 23 °C. In test set II, the slurry was conditioned at 23 °C, and, however, the bitumen flotation step was carried out at 40 °C. It was found that the use of the polymer in test set I imposed a negative impact on both bitumen recovery and bitumen froth quality. In test set II, the addition of the polymer at the bitumen extraction step improved bitumen recovery and significantly accelerated solids settling of the tailings but deteriorated the bitumen froth quality. The improvement in bitumen recovery and tailings settling at the higher operating temperature was attributed to the change of the polymer from a long, extended structure to a coiled configuration, resulting in the formation of compacted floccules of fine solids. Atomic force microscopy (AFM) was used to directly measure the long-range interaction and adhesion forces of fine solids-bitumen in industrial process water. Results from the AFM force measurements indicated potential slime coating of fine solids on bitumen, thus providing a scientific basis on the reduced bitumen froth quality with the polymer addition.
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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".