2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 3: Oye Intl. Symp. / Ionic Liquid and Aluminum
| Editors: | Kongoli F, Feng N, Polyakov P, Gaune-Escard M |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 180 pages |
| ISBN: | 978-1-987820-40-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Comprehensive utilization of Fe-Al associated ore based on carbothermic reduction
Xiaolin Pan1;1, Shenyang, China;
Type of Paper: Regular
Id Paper: 101
Topic: 37
Abstract:
China has abundant Fe-Al associated resources, the comprehensive utilization of which plays a great role in easing the shortage of bauxite and iron ores nowadays. A new and innovative technology to economically extract both iron and alumina from Fe-Al associated core basing on the coal-based direct reduction has been proposed in this paper. The Fe-Al associated core is firstly pre-reduced at a lower temperature in a rotary hearth furnace, then molten reduced at a higher temperature to separate the iron and calcium aluminate slag, and finally extracted alumina from the calcium aluminate slag. The results show that the iron metallization rate during the pre-reduction process is above 60%, and the main minerals in the pre-reduced ore are Fe, 12CaO¡¤7Al2O3, 3CaO¡¤Al2O3, 2CaO¡¤Al2O3¡¤SiO2 and 2CaO¡¤SiO2. The separation property of molten iron and calcium aluminate slag is very good, and the iron recovery rate can reach over 95%. The minerals of calcium aluminate slag are mainly comprised of 12CaO¡¤7Al2O3, CaO¡¤Al2O3 and 2CaO¡¤SiO2, which have a good alumina leaching efficiency as high as over 85%.