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Production of High-Purity Silica Sand from Ivorian Sedimentary Basin by Attrition without Acid Leaching Process for Windows Glass Making

Production of High-Purity Silica Sand from Ivorian Sedimentary Basin by Attrition without Acid Leaching Process for Windows Glass Making
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摘要 To produce high-purity silica sand usable for glass making, the present study was carried out. The objective of this work was to increase the silicon dioxide (SiO<sub>2</sub>) content to at least 99% using a simple process without chemical input. The raw sand samples were taken from the Ivorian sedimentary basin, from Maféré and Assinie areas, C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. Wet sieving and attrition technique were used for the purification process. The results from the energy dispersive spectrometer (EDS) analyses of the raw and treated samples show a significant increase of silica content and a significant reduction of impurities. The silica content (SiO<sub>2</sub>) of the sand of Maféré increases from 98.73% ± 0.15% to 99.92% ± 0.05%. And the sand of Assinie increased from 98.82% ± 0.67% in the raw samples to 99.44% ± 0.27% after treatment. The rate of iron oxide and alumina is reduced in these sands. Moreover, the sand of Maféré contains 53.2% of grains of size lower than 500 microns and that of Assinie contains 29.30%. Regarding the chemical composition of these purified sands, they meet the standard BS2975s, the American Ceramic Society and the National Bureau of Standards for window glass making. To produce high-purity silica sand usable for glass making, the present study was carried out. The objective of this work was to increase the silicon dioxide (SiO<sub>2</sub>) content to at least 99% using a simple process without chemical input. The raw sand samples were taken from the Ivorian sedimentary basin, from Maféré and Assinie areas, C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. Wet sieving and attrition technique were used for the purification process. The results from the energy dispersive spectrometer (EDS) analyses of the raw and treated samples show a significant increase of silica content and a significant reduction of impurities. The silica content (SiO<sub>2</sub>) of the sand of Maféré increases from 98.73% ± 0.15% to 99.92% ± 0.05%. And the sand of Assinie increased from 98.82% ± 0.67% in the raw samples to 99.44% ± 0.27% after treatment. The rate of iron oxide and alumina is reduced in these sands. Moreover, the sand of Maféré contains 53.2% of grains of size lower than 500 microns and that of Assinie contains 29.30%. Regarding the chemical composition of these purified sands, they meet the standard BS2975s, the American Ceramic Society and the National Bureau of Standards for window glass making.
作者 Péyokoh Roger Thio Kouassi Bruno Koffi Kouadio Denis Konan Kouakou Alphonse Yao Péyokoh Roger Thio;Kouassi Bruno Koffi;Kouadio Denis Konan;Kouakou Alphonse Yao(Mechanics and Materials Science Laboratory, Yamoussoukro, C&#244;te d’Ivoire;National Polytechnic Institute Félix Houphou&#235;t-Boigny (INPHB), Yamoussoukro, C&#244;te d’Ivoire;Civil Engineering, Geoscience and Geographic Sciences Laboratory, Yamoussoukro, C&#244;te d’Ivoire)
出处 《Journal of Minerals and Materials Characterization and Engineering》 2021年第4期345-361,共17页 矿物质和材料特性和工程(英文)
关键词 Silica Sand Silicon Oxide Attrition Wet Sieving Soda Lime Glass Maféré Assinie Côte d’Ivoire Silica Sand Silicon Oxide Attrition Wet Sieving Soda Lime Glass Maféré Assinie Côte d’Ivoire
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