Calcination of Aluminum Chloride Hexahydrate (ACH) for Alumina Production: Implications for Alumina Extraction from Aluminum Rich Fly Ash (ARFA)

• Autorzy: Zhao L.

Identyfikatory

DOI

10.24425/118933

• Języki publikacji: EN

Abstrakty

EN

Alumina rich fly ash (ARFA) has been regarded as the alternative to bauxite in China. Hydrochloric acid process could be favored for alumina extraction, necessitating calcination of aluminum chloride hexahydate (ACH). In this work, the TGA/DSC results of ACH were used to suggest calcination procedures. Two-step calcinations of 200-1000°C and 350-1000°C did not increase the surface area of alumina, by comparison with one step 1000°C calcination, and a slow heating rate could improve the surface area. Calcination temperature was increased from 950 to 1250°C in a step of 50°C, and XRD, XRF, BET and gas pycnometer were used to characterize the alumina from calcinated ACH. Consistent results were obtained by these different techniques, and two groups of impurities were identified and related to alumina purity and surface area. By comparison with clays, it was suggested to remove impurities such as MgO, Na₂ O, K₂ O, P₂ O₅ and SO₃ in hydrochloric acid leaching of ARFA.

Słowa kluczowe

EN

calcination; aluminum chloride hexahydrate; alumina rich fly ash; acid leaching

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2018
• Tom: Vol. 63, iss. 1
• Strony: 235--240
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Zhao L.

• National Institute of Clean-And-Low-Carbon Energy, P. O. Box 001 Shenhua Nice, Xiaotangshan Future Science & Technology City, Changping District, Beijing 102211, Pr China

Bibliografia

• [1] J. A. Elsele, D. J. Bauer, D. E. Shanks, Ind. Eng. Chem. Prod. Res. Dev. 22 (1), 105-110 (1983).
• [2] K. Y. Park, J. Jeong, Ind. Eng. Chem. Res. 35 (11), 4379-4385 (1996).
• [3] Z. T. Yao, M. S. Xia, P. K. Sarker, T. Chen T, Fuel 120, 74-85 (2014).
• [4] M. S. R. Sarker, M. Z. Alam, M. R. Qadir, M. A. Gafur, M. Moniruzzaman, Int. J. Miner. Metall. Mater. 22 (4), 429-436 (2015).
• [5] Y. Guo, H. Lv, X. Yang, F. Cheng, Sep. Purif. Technol. 151, 177-183 (2015).
• [6] K. Binnemans, P. T. Jones, B. Blanpain, T. V. Gerven, Y. Pontikes, J. Clean. Prod. 99, 17-38 (2015).
• [7] A. N. Løvik, E. Restrepo, D. B. Müller, Environ. Sci. Technol. 49 (9), 5704-5712 (2015).
• [8] V. V. Seredin, Int. J. Coal Geo. 90-91, 1-3 (2012).
• [9] L. Zhao, H. Xiao, B. Wang, Q. Sun, J. Chem. 2016, article ID 8695890, 10 pages (2016).
• [10] G. Lü, T. Zhang, L. Wang, S. Ma, Z. Dou, Y. Liu, J. Cent. South Univ. 21 (12), 4450-4455 (2014).
• [11] T. Sato, Netsu Sokutei. 13 (3), 113-122 (1986).
• [12] D. Petzold, R. Naumann, J. Therm. Anal. 20 (1), 71-86 (1981).
• [13] R. Naumann, D. Petzold, F. Paulik, J. Paulik, J. Therm. Anal. 15 (1), 47-53 (1979).
• [14] M. Hartman, O. Trnka, O. Šolcová, Ind. Eng. Chem. Res. 44 (17), 6591-6598 (2005).
• [15] K. Y. Park, J.-K. Kim, J. Jeong, Y. Y. Choi, Ind. Eng. Chem. Res. 36 (7), 2646-2650 (1997).
• [16] K. Y. Park, Y.-W. Park, S.-H. Youn, S.-Y. Choi, Ind. Eng. Chem. Res. 39 (11), 4173-4177 (2000).
• [17] C. S. Sen, B. Santanu, J. Metall. Mater. Sci. 53 (4), 355-367 (2011).
• [18] D. Thirumala ikumarasamy, K. Shanmugam, V. Balasubramanian, J. Asian Ceram. Soc. 2 (4), 403-415 (2014).
• [19] J. Saukkoriipi, Theoretical study of the hydrolysis of aluminium complexes. PhD Dissertation, University of Oulu, Oulu, 2010.
• [20] K. Wefers, C. Misra, Oxides and hydroxides of aluminum, Technical Paper No. 19 Revised, Aluminum Company of America, 1987.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).