Academic Journal
Process optimisation of low silica zeolite synthesis from spodumene leachate residue
| العنوان: | Process optimisation of low silica zeolite synthesis from spodumene leachate residue |
|---|---|
| المؤلفون: | Outram, John G., Collins, Fiona J., Millar, Graeme J., Couperthwaite, Sara J., Beer, Gavin |
| المصدر: | Chemical Engineering Research and Design |
| بيانات النشر: | Institution of Chemical Engineers |
| سنة النشر: | 2023 |
| المجموعة: | Queensland University of Technology: QUT ePrints |
| مصطلحات موضوعية: | Aluminosilicate, Fusion, Hydrothermal, Lithium, Process, Zeolite X |
| الوصف: | Lithium extraction from hard rock sources, such as spodumene, generates an aluminosilicate waste that can be converted into zeolite materials. Increased lithium demand in recent years highlights a growing need to develop a residue mitigation strategy. Zeolite synthesis from aluminosilicate waste is more complex than conventional synthetic zeolite production routes and typically involves an activation step, such as alkali fusion. In this context, a key challenge to increase product quality involved understanding the influence of factors such as aluminium supplement addition and alkali fusion processing options. Zeolite X crystalline content and particle morphology was compared in relation to various reaction gel compositions. Zeolite X was produced from alkali-fused SLR which was found to contain 60 wt% crystalline zeolite X after adjusting key synthesis parameters to 2.0 Si:Al ratio, 1.4 Na 2 O:SiO 2 ratio, 30 H 2 O:Na 2 O. The product was highly agglomerated (D[4,3] = 51.1 µm) with small crystal sizes of< 2 µm. Holding this gel composition constant and introducing the aluminium supplementation during gel aging, the average particle agglomeration was reduced (D[4,3] = 14.1 µm). Further processing of the fused SLR qualitatively reduced agglomeration and increased zeolite X crystal size, with little impact on the crystalline zeolite X content; the latter strategy produced a zeolite X material with similar morphological characteristics to a commercially available analogue. This work demonstrated that controlling the processing and additions of activated aluminosilicate was a key consideration in terms of controlling zeolite crystal morphology. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | Outram, John G., Collins, Fiona J., Millar, Graeme J., Couperthwaite, Sara J., & Beer, Gavin (2023) Process optimisation of low silica zeolite synthesis from spodumene leachate residue. Chemical Engineering Research and Design, 189, pp. 358-370.; https://eprints.qut.edu.au/236994/; Centre for Materials Science; Centre for Agriculture and the Bioeconomy; Centre for Clean Energy Technologies & Practices; Faculty of Science; Faculty of Engineering; School of Mechanical, Medical & Process Engineering |
| الاتاحة: | https://eprints.qut.edu.au/236994/ |
| رقم الانضمام: | edsbas.E3EF0219 |
| قاعدة البيانات: | BASE |
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