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Preparation of Alumina from Fly Ash by Sulfuric Acid

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Abstract:

Extraction metallurgy level alumina from fly ash through high-pressure leaching, removing iron, crystallizing and roasting processes were considered. The optimum conditions of high-pressure leaching, removing iron and roasting processes were obtained by experiments. The leaching rate of Al2O3 can reach 93.1% and the purity of Al2O3 product can reach above 98% under these conditions. The iron content in Al2(SO4)3 solution can decrease from 1.21% to 0.10% when fly ash as alkaline agents.

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Periodical:

Advanced Materials Research (Volumes 734-737)

Pages:

1551-1554

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.734-737.1551

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Cite this paper

Online since:

August 2013

Authors:

Ying Lu Lv, Chao Yi Chen, Zhi Hui Mao

Keywords:

Alumina, Fly Ash (FA), Leaching, Sulfuric Acid

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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