Xue-qin Ma, Ya-hui Liu, Jing-long Chu, Jie Li, Tian-yan Xue, Li-na Wang, and Tao Qi, Removal of zirconium from hydrous titanium dioxide, Int. J. Miner. Metall. Mater., 20(2013), No. 1, pp. 1-8. https://doi.org/10.1007/s12613-013-0686-7
Cite this article as:
Xue-qin Ma, Ya-hui Liu, Jing-long Chu, Jie Li, Tian-yan Xue, Li-na Wang, and Tao Qi, Removal of zirconium from hydrous titanium dioxide, Int. J. Miner. Metall. Mater., 20(2013), No. 1, pp. 1-8. https://doi.org/10.1007/s12613-013-0686-7
Xue-qin Ma, Ya-hui Liu, Jing-long Chu, Jie Li, Tian-yan Xue, Li-na Wang, and Tao Qi, Removal of zirconium from hydrous titanium dioxide, Int. J. Miner. Metall. Mater., 20(2013), No. 1, pp. 1-8. https://doi.org/10.1007/s12613-013-0686-7
Citation:
Xue-qin Ma, Ya-hui Liu, Jing-long Chu, Jie Li, Tian-yan Xue, Li-na Wang, and Tao Qi, Removal of zirconium from hydrous titanium dioxide, Int. J. Miner. Metall. Mater., 20(2013), No. 1, pp. 1-8. https://doi.org/10.1007/s12613-013-0686-7
National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
A method was proposed for removing zirconium (Zr) from hydrous titanium dioxide (HTD) by the NaF solution. The effects of main parameters, i.e. pH values, NaF dosage, temperature and retention time, on the removal of zirconium were studied. The optimal conditions were found as the following: pH value, <5.5; molar ratio of NaF to TiO2, 0.6; retention time, 80 min; and temperature, 80℃. The removal rate of Zr under the optimized conditions was above 87.7%. The adsorption energy of the preferential absorption of hydrofluoric acid for Zr(OH)2SO4(OH2) on the (001) crystal surface of HTD was determined by theoretical calculation. The possible mechanism of the removal process was also discussed.
National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
A method was proposed for removing zirconium (Zr) from hydrous titanium dioxide (HTD) by the NaF solution. The effects of main parameters, i.e. pH values, NaF dosage, temperature and retention time, on the removal of zirconium were studied. The optimal conditions were found as the following: pH value, <5.5; molar ratio of NaF to TiO2, 0.6; retention time, 80 min; and temperature, 80℃. The removal rate of Zr under the optimized conditions was above 87.7%. The adsorption energy of the preferential absorption of hydrofluoric acid for Zr(OH)2SO4(OH2) on the (001) crystal surface of HTD was determined by theoretical calculation. The possible mechanism of the removal process was also discussed.
下载: