Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
Study on Enhanced Extraction and Recovery of Lithium and Gallium Through Thermal Activation of Coal Gangue. |
| Συγγραφείς: |
Shi, Mengmeng, Zhang, Lei, Pan, Jinhe, Gao, Yijie, Zhou, Changchun |
| Πηγή: |
JOM: The Journal of The Minerals, Metals & Materials Society (TMS); Jul2026, Vol. 78 Issue 7, p5961-5974, 14p |
| Θεματικοί όροι: |
Lithium, Gallium, Thermodynamics, Volatization, Leaching, Heat treatment, Extraction (Chemistry) |
| Περίληψη: |
This study has developed a thermal activation-acid leaching process to extract Li and Ga from coal gangue. Sequential chemical extraction, thermodynamic calculation, and in-situ SEM were employed to track the occurrence, migration, and transformation of Li and Ga during the thermal activation process. The results showed that 93.9% of Li and 81% of Ga were silicate-bound in kaolinite. After thermal activation, leaching ratios reached 91.27% (Li) and 95.49% (Ga), as residual Li and Ga transformed into more reactive ion-exchangeable and oxide-bound forms. Thermodynamic analysis revealed that the Li-containing phase gradually transformed from LiAlSi4O10 to LiAlO2 and Li2O as the temperature increased. Above 1700°C, a small amount of LiOH(g) is produced. Ga was relatively stable in an oxidative activation system and existed in the form of Ga2O3. Above 1600°C, gallium transformed into volatile species (Ga2O, GaO, Ga), with H2S promoting Ga2S formation and a reducing atmosphere facilitating volatilization at lower temperatures. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: |
Complementary Index |