Optimization of Silicon Extraction from Tanjung Tiram Asahan Natural Sand through Magnesiothermic Reduction
Corresponding email: nofrijon.sofyan@ui.ac.id
Published at : 30 Dec 2015
Volume : IJtech
Vol 6, No 7 (2015)
DOI : https://doi.org/10.14716/ijtech.v6i7.1493
Andriayani, Raja, S.L., Sihotang, H., Sofyan, N., 2015. Optimization of Silicon Extraction from Tanjung Tiram Asahan Natural Sand through Magnesiothermic Reduction. International Journal of Technology. Volume 6(7), pp. 1174-1183
| Andriayani | Department of Chemistry, College of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jl. Bioteknologi No 1. Kampus USU Padang Bulan Medan 20155, Indonesia |
| Saur L. Raja | Department of Chemistry, College of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jl. Bioteknologi No 1. Kampus USU Padang Bulan Medan 20155, Indonesia |
| Herlince Sihotang | Department of Chemistry, College of Mathematics and Natural Sciences, Universitas Sumatera Utara, Jl. Bioteknologi No 1. Kampus USU Padang Bulan Medan 20155, Indonesia |
| Nofrijon Sofyan | Department of Metallurgical and Materials Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI Depok, Depok 16424, Indonesia |
We carried out silicon extraction from the natural resources of Tanjung Tiram Asahan, Batu Bara Regency, North Sumatra through variation of heating temperatures and magnesiothermic reduction. Prior to the extraction, the sand from the natural resource was refined until the solid white silica powder was separated. The reaction conditions were performed at various heating temperatures in a furnace, as follows: at 750 (2 hours), 800 (3 hours), 850 (3 hours), 900 (3 hours), and 950 (3 hours). Optimization of the extraction reaction conditions was then performed using magnesiothermic reduction at several silica and magnesium ratios, i.e. 1:1.125, 1:1.50, 1:1.75, 1:1.20, and 1:1.25. The refined silica, together with all of the silicon products from the extraction, was characterized using XRD and analyzed. The morphology of the reaction product was characterized using an electron microscope. The results showed that changes to the silicon products after extraction varied, depending on temperature. Optimization of silicon extraction from silica was obtained at 800°C for 3 hours, with a silica and magnesium ratio of 1:1.75.
Magnesiothermic reduction, Natural Sand, RIR Method, Silica, Silicon
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