Research Development on Extracting of Aluminum from the Fly ash by Roasting Acid Leaching

DOI

10.2991/icimm-15.2015.139How to use a DOI?

Keywords

Fly Ash; Acid Leach; Dissolution Rate

Abstract

The conditions of roasting activation of fly ash with NaF as assistant and extraction of Al2O3 by acid leaching were studied. The effects of conditions of roasting activation and acid leaching on the leaching rate of aluminum from fly ash were investigated of the pre- and post-extracted fly ash were analyzed by SEM.The results show that the optimal conditions of roasting activations were obtained as:mass ratio of coal fly ash to NaF 5:1, under time 60 min,temperature 850 ;the optimal conditions of leaching temperature80 ,leaching time120min, concentration of H2SO4 1.2 mol/L, liquid-to-solid ratio 12 mL/g, the dissolution rate of aluminum reached 94.1%. The preparation of Al2O3 was obtained after edulcoration and production.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiujun Sun
PY  - 2015/07
DA  - 2015/07
TI  - Research Development on Extracting of Aluminum from the Fly ash by Roasting Acid Leaching
BT  - Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials
PB  - Atlantis Press
SP  - 737
EP  - 742
SN  - 2352-5401
UR  - https://doi.org/10.2991/icimm-15.2015.139
DO  - 10.2991/icimm-15.2015.139
ID  - Sun2015/07
ER  -