Abstract
With the rapid development of China alumina production, efficient utilization of plentiful low grade high-iron bauxite has received widespread attention in the aluminum industry. Based on this, “calcification-carbonization-direct reduction” method is proposed for extracting effectively valuable metals Al and Fe from high-iron bauxite. The research results indicate that: after the calcification-carbonization process for high-iron bauxite, leaching rate of Al2O3 can reach 83.67%, higher than extraction rate of Al2O3 through Bayer method. Then, direct reduction of calcification-carbonization residue is investigated. Metallization ratio of Fe is 80.5% when reduction temperature and time is 1050°C and 2h respectively. Moreover, metallization ratio of Fe can reach 93.6% with the addition of additive A. After the “calcification-carbonization-direct reduction” process, valuable metals Al and Fe can be extracted effectively from high-iron bauxite. The main component of final residue is CaCO3 and CaSiO3, which can be directly applicable to the cement industry.
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References
Smith P. The processing of high silica bauxites–review of existing and potential processes [J]. Hydrometallurgy, 2009, (98): 162–176.
G. Power, M. Gräfe, C. Klauber. Bauxite residue issues: I. Current management, disposal and storage practices [J]. Hydrometallurgy, 2011, (108): 33–45.
C. Klauber, M. Gräfe, G. Power. Bauxite residue issues: II. Options for residue utilization [J]. Hydrometallurgy, 2011, (108): 11–32.
Wang Q.X., Zhang K.R., Zhao J.W., and Ma H.L. Status problems and countermeasures of development and utilization of bauxite resources in China[J]. Conservation and Utilization of Mineral Resorces., 2008, (5): 46–50.
MU Xin-he. Discussion on reasonable exploitation of bauxite mineral resources in China [J]. Mineral Re-sources and Geology, 2002, 16(5): 313–315.
Li Guanghui, Liu Mingxia, Rao Mingjun. Stepwise extraction of valuable components from red mud based on reductive roasting with sodium salts [J]. Journal of Hazardous Materials, 2014, (280): 774–780.
Zhang Ran, Zheng Shili, Ma Shuhua, et.al. Recovery of alumina and alkali in Bayer red mud by the formation of andradite-grossular hydrogarnet in hydrothermal process [J]. Hazard Mater, 2011, (189): 827–835.
Zhong Li, Zhang Yifei, Zhang Yi. Extraction of alumina and sodium oxide from red mud by a mild hydro-chemical process [J]. Hazard. Mater, 2009, (172): 1629–1634.
Pan Xiaolin, Yu Haiyan, Tu Ganfeng. Reduction of alkalinity in bauxite residue during Bayer digestion in high-ferrite diasporic bauxite [J], Hydrometallurgy 2015, (151): 98–106.
Ma S, Wen Z, Chen J, et al. An environmentally friendly design for low-grade diasporic-bauxite processing [J]. Minerals Engineering, 2009, 22(9–10): 793–798.
Li Xinhua, Gu Songqing, Yin Zhonglin. Regulating the digestion of high silica bauxite with calcium ferrite addition [J]. Hydrometallurgy, 2010, (104): 313–316.
Zhang T.A., Zhu X.F., Lv G.Z., Pan L., Liu Y., Zhao Q.Y., Li Y., Jiang X.L., and He J.C., Calcification-carbonation method for alumina production by using low-grade bauxite[C]. Light Metals, San Antonio TMS, 2013: 233–238.
Zhang T.A., Lv G.Z., Liu Y., Dou Z.H., Zhao Q.Y., Niu L.P., and He J.C., The Digestion of Alumina in Middle-low Bauxite based on Calcification carbonization Conversion: China, Patent, 201110275013.6[P]. 2011.
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Weiguang, Z. et al. (2016). Study on effective extraction of Al and Fe from high-iron bauxite through “calcification-carbonization” method. In: Williams, E. (eds) Light Metals 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-48251-4_3
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DOI: https://doi.org/10.1007/978-3-319-48251-4_3
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48615-4
Online ISBN: 978-3-319-48251-4
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