Processing of Low-Quality Gibbsite-Kaolinite Bauxites
Abstract
:1. Introduction
- hydrochemical method (Bayer method);
- sintering method;
- combined method (combination of the Bayer method and sintering method in parallel and sequential versions) [3].
2. Materials and Methods
3. Results and Discussion
3.1. Physical and Chemical Composition
3.2. Chemical Activation
3.3. Preliminary Roasting and Chemical Beneficiation
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Bauxite Roasting Temperature, °C | Content, % | Extraction of SiO2 into Solution, % | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Al2O3 | SiO2 | Fe2O3 | CaO | SO3 | Na2O | Cl | TiO2 | Other | μSi | ||
900 | 45.77 | 10.27 | 22.49 | 2.03 | 0.61 | 3.99 | 0.01 | 3.05 | 11.76 | 4.45 | 55.2 |
925 | 52.72 | 9.36 | 26.58 | 1.95 | 0.48 | 3.76 | 0.01 | 3.13 | 2.01 | 5.63 | 56.0 |
950 | 58.06 | 5.33 | 27.12 | 2.31 | 0.12 | 0.49 | 0.01 | 3.3 | 0.08 | 10.9 | 74.9 |
975 | 57.47 | 5.37 | 27.14 | 2.25 | 0.09 | 0.53 | 0.01 | 3.14 | 0.01 | 10.6 | 74.6 |
1000 | 60.35 | 5.69 | 27.49 | 2.1 | 0.09 | 0.59 | 0.01 | 3.44 | 0.03 | 10.6 | 74.3 |
Bauxite Roasting Temperature, °C | Content, g/dm3 | αкy | μSi | ||||
---|---|---|---|---|---|---|---|
Al2O3 | Na2Ooб | Na2Oкб | Na2Oкy | SiO2 | |||
900 | 116.325 | 132.5 | 9.5 | 123.0 | 1.0 | 1.74 | 116 |
925 | 118.3 | 132.8 | 9.9 | 122.9 | 0.99 | 1.70 | 119.4 |
950 | 130.8 | 133.04 | 11.04 | 122.0 | 0.88 | 1.54 | 140 |
975 | 133.9 | 133.4 | 11.3 | 122.1 | 0.85 | 1.50 | 148 |
1000 | 133.5 | 134 | 11.5 | 122.5 | 0.820 | 1.51 | 158 |
Bauxite Roasting Temperature, °C | Solids Content, % | μSi | Extraction into Solution Al2O3, % | |||||||
---|---|---|---|---|---|---|---|---|---|---|
Al2O3 | SiO2 | Fe2O3 | CaO | SO3 | Na2O | Cl | TiO2 | |||
900 | 21.403 | 21.869 | 30.986 | 1.556 | 0.2 | 16.95 | 2.771 | 3.623 | 0.98 | 66.1 |
925 | 20.31 | 15.73 | 34.15 | 2.8 | 0.3 | 16.74 | 2.58 | 3.45 | 1.21 | 70.3 |
950 | 14.1 | 10.65 | 54.5 | 3.11 | 0.5 | 15.82 | 2.306 | 3.554 | 1.29 | 87.8 |
975 | 12.7 | 10.7 | 54.22 | 3.2 | 1.09 | 15.01 | 2.35 | 3.45 | 1.505 | 88.1 |
1000 | 15.0 | 11.4 | 54.8 | 3.8 | 0.8 | 12.44 | 1.401 | 4.009 | 1.89 | 87.0 |
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Dyussenova, S.; Abdulvaliyev, R.; Akcil, A.; Gladyshev, S.; Ruzakhunova, G. Processing of Low-Quality Gibbsite-Kaolinite Bauxites. Metals 2022, 12, 1030. https://doi.org/10.3390/met12061030
Dyussenova S, Abdulvaliyev R, Akcil A, Gladyshev S, Ruzakhunova G. Processing of Low-Quality Gibbsite-Kaolinite Bauxites. Metals. 2022; 12(6):1030. https://doi.org/10.3390/met12061030
Chicago/Turabian StyleDyussenova, Symbat, Rinat Abdulvaliyev, Ata Akcil, Sergey Gladyshev, and Galiya Ruzakhunova. 2022. "Processing of Low-Quality Gibbsite-Kaolinite Bauxites" Metals 12, no. 6: 1030. https://doi.org/10.3390/met12061030