Abstract
In this study, we investigated coarse anatase concentrate composed of 35.63% TiO2, 15.22% Fe2O3, 10.68% Al2O3, and 13.18% SiO2, containing mainly anatase, kaolinite, hematite, and quartz. The concentrate was treated via roasting, water leaching, and magnetic separation. The addition of NaOH promoted the transformation of kaolinite and quartz into a soluble sodium salt rich in sodium meta-aluminate and sodium silicate. Furthermore, the addition of coke promoted the transformation of hematite to magnetite, metallic Fe, and ferrous oxide. Fe concentrates with an Fe content and recovery of 69.99% and 92.77%, respectively, and TiO2 concentrates with a TiO2 content and recovery of 94.90% and 99.45%, respectively, were achieved. The major minerals in the Fe concentrate were magnetite, metallic Fe, and ferrous oxide, and the Ti in the Ti concentrate originated from anatase TiO2. The thermodynamic calculation results were in good agreement with the test results.
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Acknowledgements
This study was funded by the Sichuan Science and Technology Program (Grant Nos. 2022YFS0462, 2021YJ0057, and 2021YFG0268), the Project funded by China Postdoctoral Science Foundation (grant no. 2014M560734), and Key Laboratory of Guangdong Provincial Key Laboratory of Radioactive and Rare Resource Utilization (Grant No. 2018B030322009).
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Xiao, J., Zou, K., Gao, D. et al. Effective Extraction of Titanium and Iron from Coarse Anatase Concentrate. JOM 74, 3833–3842 (2022). https://doi.org/10.1007/s11837-022-05421-x
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DOI: https://doi.org/10.1007/s11837-022-05421-x