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Recovery of alumina from sodium hydrate alumino-silicate by a novel hydrometallurgical route

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4 Author(s)
Zhang Yali ; Coll. of Chem. Eng., Shandong Univ. of Technol., Zibo, China ; Yu Xianjin ; Zhang Lipeng ; Li Degang

A great amount of sodium hydrate alumino-silicate generated from alumina production not only threatens the environment but also causes waste of secondary resources. High-alumina-content sodium hydrate alumino-silicate was employed to recover alumina by the process of hydrometallurgical route at low temperature and normal atmosphere. The X-ray diffraction pattern shows sodium hydrate alumino-silicate was completely decomposed and was converted into sodium riopone and dawsonite. Experimental results indicate that A/S of tailings can reach 0.53, respectively under the optimized conditions.

Published in:

Materials for Renewable Energy & Environment (ICMREE), 2011 International Conference on  (Volume:2 )

Date of Conference:

20-22 May 2011