| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2024: Process-Structure-Property Relations and New Technologies
|
| Presentation Title |
Boron Removal from Prepared Rice Hulls Ash Metallurgical-grade Silicon via Solvent Refining Process |
| Author(s) |
Benedict O. Ayomanor, Cookey Iyen, Godswill Ofualagba, Judith Umukoro, Oghenekevwe Enamuotor, Onajite Omughele |
| On-Site Speaker (Planned) |
Benedict O. Ayomanor |
| Abstract Scope |
Metallurgical grade silicon (MG-Si) derived from an agricultural waste Rice husk via metallothermic reduction of pulverized Mg and SiO2 mixture at ratio 1:1 gram, was treated and purified by hydrometallurgical purification process. A low-cost silicon with high purity was produced by solvent refining process. In this work, silica of 98.03% has been prepared from rice hulls annealed at 700oC for 6 hours. Furthermore, the silica value was boosted by improved purification processes to yield 99.51% of silica. The XRF showed several metallic trace impurities were significantly reduced beyond its detection limit. The final process underwent centrifuge of solvent refined silicon with tin as a selected gettering metal. The x-ray mapping and EDS quantitative analysis showed B was eliminated. The XRF of final silicon powder showed purity > 98.5%. The XRD and TEM investigation showed crystalline silicon material and silicon consisting of agglomerate polycrystalline materials with grain sizes of 20-67.08nm respectively. |
| Proceedings Inclusion? |
Planned: |