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%.