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Advances in Beneficiation of Low-Grade Bauxite Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Preparing Alumina by an Electrolytic Method from Sulfuric Acid Leachate of Coal Fly Ash

Authors : Yuan Shi, Kai-xi Jiang, Ting-an Zhang, Guo-zhi Lv

Published in: Light Metals 2019

Publisher: Springer International Publishing

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Abstract

Coal fly ash (CFA) is a solid waste from burning coal in power plants and has caused serious environmental problems. From this study, a three-staged process: sulphating-roasting, leaching and electrolysis, to produce alumina from coal fly ash in an environmentally-friendly manner is proposed. In this work, the key process of electrolysis was investigated in detail, batch experiments were performed to evaluate the potential effects of important parameters such as electrode distance. The electrolytic products were analyzed by XRD, XRF, SEM and Particle size distribution (PSD). The results showed that the electrolysis products were Al(OH)3 which can be used for aluminum reduction. Moreover, the electrolysis mechanisms in sulfuric acid leachate are also discussed.

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previous chapter Synchronous Desulfurization and Desilication of Low-Grade and High-Sulfur Bauxite by a Flotation Process
next chapter Use of Two Filtration Stages for Bauxite Residue
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Metadata
Title
Preparing Alumina by an Electrolytic Method from Sulfuric Acid Leachate of Coal Fly Ash
Authors
Yuan Shi
Kai-xi Jiang
Ting-an Zhang
Guo-zhi Lv
Copyright Year
2019
Book
Light Metals 2019

Print ISBN: 978-3-030-05863-0

Electronic ISBN: 978-3-030-05864-7

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-05864-7_7

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