Preparation of α-Alumina from Coal Fly Ash by Sintering with Sulfuric Acid

Abstract:

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A technology was studied to prepare -alumina from fly ash, and the integrated process flow including sintering with sulfuric acid, leaching, recrystallization, calcination was established in this paper. The influences including the particle size of fly ash, sintering temperature, sintering time and the mass ratio of sulfuric acid to fly ash on the extraction ratio of alumina were investigated and discussed during sintering process, and the optimal parameters were determined. The product of -alumina was examined by chemical analysis, XRD and SEM, and the results show that α-alumina reach the national standards.

Info:

Periodical:

Advanced Materials Research (Volumes 113-116)

Edited by:

Zhenyu Du and X.B Sun

Pages:

2039-2044

DOI:

10.4028/www.scientific.net/AMR.113-116.2039

Citation:

W. N. Mu and Y. C. Zhai, "Preparation of α-Alumina from Coal Fly Ash by Sintering with Sulfuric Acid", Advanced Materials Research, Vols. 113-116, pp. 2039-2044, 2010

Online since:

June 2010

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Price:

$35.00

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