Abstract
During the technology of extracting Al2O3 and other valuable elements in high-alumina fly ash by hydrochloric acid method, the process of AlCl3 transformed into Al2O3 has many problems, such as the long technological process and the large investment in equipment. In this paper, a new method of the direct-electricity conversion technology is proposed, for dealing with aluminium chloride solution. Namely, using the method of electrolysis and taking CO2 injection to improve the pH of solution, which make the aluminum precipitate in the form of carboaluminates. Then after roasting, Al2O3 can be acquired. The influences of the initial AlCl3 concentration and the composition of the solution in the cathode side of the cell on the electric conversion process have been studied and the roasting products have been characterized.
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References
Hui JB. Basic research on alumina extraction from high-alumina fly ash by Hydrothermal process [D]. Graduate School of the Chinese Academy of Sciences (Institute of process engineering), 2015.
Zhang NY. Research on the effects of fuel coal ash composition characteristics for CFB boiler wear [C]//Second academic exchanges meeting of boiler professional committee. 2005.
Guo Q. Research progress on alumina extraction from fly ash by acid process [J]. Clean coal technology, 2015, 21(5):115–118.
Dai S, Zhao L, Peng S, et al. Abundances and distribution of minerals and elements in high-alumina coal fly ash from the Jungar Power Plant, Inner Mongolia, China [J]. International Journal of Coal Geology, 2010, 81(4):320–332.
Ahmaruzzaman M. A review on the utilization of fly ash [J]. Progress in Energy and Combustion Science, 2010, 36: 327–363.
Cao D Z, Selic E, Herbell J D. Utilization of fly ash from coal-fired pow er plants in China [J]. Journal of Zhejiang University: Science A, 2008, 9(5):681–687.
Zhang TA, Zheng CZ, Lv GZ, et al. Specific on surface area and pore properties of aluminum hydroxide using high-alumina fly ash preparation [J]. Journal of Northeastern University natural science edition, 2014, 35(10):1456–1459.
Yang J, Jiang ZQ, Ma HW, et al. Research progress on alumina extraction from China aluminium resources and high-alumina fly ash [J]. Earth Science Frontiers, 2014, 21(5):313–324.
Shi ZW., New progress in research on alumina extraction from fly ash by acid leaching method [J]. Guangdong Chemical Industry, 2013, 40(5):62–63.
Sun YZ. Using fly ash as raw material for preparation aluminium sulfate [J]. Comprehensive utilization of fly ash, 2003(2):46–46.
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© 2018 The Minerals, Metals & Materials Society
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Zhang, Ta. et al. (2018). Research on Alumina Preparation from Aluminium Chloride Solution by Electrolysis Process. In: Martin, O. (eds) Light Metals 2018. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72284-9_14
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DOI: https://doi.org/10.1007/978-3-319-72284-9_14
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