Complex Activation of Coal Gangue to Al Compounds

Shu Hong Liu; Xi Jie Lan; Hong Gao

doi:10.4028/www.scientific.net/AMR.402.734

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 402Complex Activation of Coal Gangue to Al Compounds

Complex Activation of Coal Gangue to Al Compounds

Abstract:

The coal gangue was activated by calcine activation, calcine activation + mechanical activation (MA) complex activation. From the results of O₂-TPO-MS and Ar-TPR-MS, we can speculate the reactions occurred during the coal gangue calcine activation processing. Effects of calcine temperature, calcine activation + MA complex activation, kinds of acid on the extraction percent of Al were investigated. The results of the extraction percent of Al and particle size analysis show that calcine (400~600 oC) activation and calcine (400~600 oC) + MA complex activation can enhance the extraction percent of Al and decrease the particle size. Much higher extraction percent of Al can be obtained with H₂SO₄ as acid medium than with HCl as acid medium for the coal gangue activated with the same condition.

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Periodical:

Advanced Materials Research (Volume 402)

Pages:

734-737

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.402.734

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Online since:

November 2011

Authors:

Shu Hong Liu, Xi Jie Lan, Hong Gao

Keywords:

Aluminum (Al), Calcine, Coal Gangue, Mechanical Activation

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