Chalcopyrite Dissolution in and Fe Speciation Sulphate System pH: 1.0 at Room Temperature
Bibliographic record
Abstract
In attempt to provide insight on the chemistry of dissolution of chalcopyrite, a carbonatitic copper concentrate was dissolved for 12 hours in ferric sulphate (0.05 mol/L) solution of pH 1.0 at room temperature and atmospheric pressure, in a stirred Erlenmeyer flask with 10% solid. The results revealed a low Cu recovery (<12%) however the solution speciation revealed that the extraction of Cu from the mineral does not only depend upon the nominal Fe 3+ and Fe 2+ , other Fe species including Fe(H 2 SO 4 ) 2+ play a major role during the withdrawal of Cu from CuFeS 2 . However, Fe 3+ followed by Fe(HSO 4 ) + remains the principal Fe specie responsible for Cu dissolution. In addition to that, the solid leached residue showed the presence of new Cu phase: bornite, chalcocite and covelite mineral.
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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".