Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process
In order to promote the recycling of by-product from Si wafer manufacturing process and to develop environment-friend and low cost process for ferrochrome alloy production, a basic study was performed on the preliminary reduction reaction between chromium ore and the Si sludge, comprised of SiC and...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2018-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700054J.pdf |
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| author | Jung W.-G. Back G.-S. Johra F.T. Kim J.-H. Chang Y.-C. Yoo S.-J. |
| author_facet | Jung W.-G. Back G.-S. Johra F.T. Kim J.-H. Chang Y.-C. Yoo S.-J. |
| author_sort | Jung W.-G. |
| collection | DOAJ |
| description | In order to promote the recycling of by-product from Si wafer manufacturing process and to develop environment-friend and low cost process for ferrochrome alloy production, a basic study was performed on the preliminary reduction reaction between chromium ore and the Si sludge, comprised of SiC and Si particles, which is recovered from the Si wafer manufacturing process for the semiconductor and solar cell industries. Pellets were first made by mixing chromium ore, Si sludge, and some binders in the designed mixing ratios and were then treated at different temperatures in the 1116°C–1388°C range in an ambient atmosphere. Cordierite and SiO2 were confirmed to be formed in the products after the reduction. Additionally, metal particles were observed in the product with Fe, Cr, and Si components. It is found that temperatures above 1300°C are necessary for the reduction of the chromium ore by the Si sludge. The reduction ratio for Fe was evaluated quantitatively for our experimental conditions, and the proper mixing ratio was suggested for the pre-reduction of the chromium ore by the Si sludge. This study provides basic information for the production of ferrochrome alloys on the pre-reduction of chromium ore using Si sludge. |
| format | Article |
| id | doaj-art-a6050b97a94c4cff9ede3313a70a8d32 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-a6050b97a94c4cff9ede3313a70a8d322025-02-02T02:21:52ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752018-01-01541293710.2298/JMMB170520054J1450-53391700054JPreliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing processJung W.-G.0Back G.-S.1Johra F.T.2Kim J.-H.3Chang Y.-C.4Yoo S.-J.5Kookmin University, School of Materials Science and Engineering, Seoul, South KoreabKookmin University, Graduate School, Seoul, South KoreaKookmin University, School of Materials Science and Engineering, Seoul, South KoreaResearch Institute of Industrial Science & Technology, Nonferrous Metals Research Center. Seoul, South KoreaKorea University of Technology and Education, Dept. of Mechatronics Engineering. Seoul, South KoreaDankook UniversityIn order to promote the recycling of by-product from Si wafer manufacturing process and to develop environment-friend and low cost process for ferrochrome alloy production, a basic study was performed on the preliminary reduction reaction between chromium ore and the Si sludge, comprised of SiC and Si particles, which is recovered from the Si wafer manufacturing process for the semiconductor and solar cell industries. Pellets were first made by mixing chromium ore, Si sludge, and some binders in the designed mixing ratios and were then treated at different temperatures in the 1116°C–1388°C range in an ambient atmosphere. Cordierite and SiO2 were confirmed to be formed in the products after the reduction. Additionally, metal particles were observed in the product with Fe, Cr, and Si components. It is found that temperatures above 1300°C are necessary for the reduction of the chromium ore by the Si sludge. The reduction ratio for Fe was evaluated quantitatively for our experimental conditions, and the proper mixing ratio was suggested for the pre-reduction of the chromium ore by the Si sludge. This study provides basic information for the production of ferrochrome alloys on the pre-reduction of chromium ore using Si sludge.http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700054J.pdfchromium oresilicon sludgesilicon carbidesiliconpre-reductionferrochrome |
| spellingShingle | Jung W.-G. Back G.-S. Johra F.T. Kim J.-H. Chang Y.-C. Yoo S.-J. Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process Journal of Mining and Metallurgy. Section B: Metallurgy chromium ore silicon sludge silicon carbide silicon pre-reduction ferrochrome |
| title | Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process |
| title_full | Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process |
| title_fullStr | Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process |
| title_full_unstemmed | Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process |
| title_short | Preliminary reduction of chromium ore using Si sludge generated in silicon wafer manufacturing process |
| title_sort | preliminary reduction of chromium ore using si sludge generated in silicon wafer manufacturing process |
| topic | chromium ore silicon sludge silicon carbide silicon pre-reduction ferrochrome |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2018/1450-53391700054J.pdf |
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