Separation and Extraction of Scandium from Titanium Dioxide Waste Acid

被引：7
|
作者：
Zhang, Lili [1 ]
Zhang, Ting-An [1 ]
Lv, Guozhi [1 ]
Zhang, Weiguang [1 ]
Li, Tingting [1 ]
Cao, Xuejiao [1 ]
机构：
[1] Northeastern Univ, Sch Met, Key Lab Ecol Met Multimetal Intergrown Ores, Minist Educ, Shenyang 110819, Peoples R China
来源：
JOM | 2021年 / 73卷 / 05期
基金：
中国国家自然科学基金;
关键词：
This work was financially supported by the National Natural Science Foundation of China (Nos.51874078); and the Fundamental Research Funds for the Central Universities (No. N182504018);
D O I：
10.1007/s11837-021-04629-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The solvent extraction method for extracting scandium from titanium dioxide waste acid is usually accompanied by co-extraction of titanium. In this paper, the scandium and titanium separation of the Sc(III) and Ti(IV)-loaded organic phase and the recovery of scandium were studied. A new scrubbing agent containing Na(3)Cit and H2O2 was used to selectively remove titanium from the Sc(III) and Ti(IV)-loaded organic phase. Results indicated that the removal ratio of titanium reached 100% with an nNa(3)Cit/nTi ratio of 1.5/1 and an nH(2)O(2)/nTi ratio of 3/1 at an O/A ratio of 1/1 and 25 degrees C for 15 min through a three-stage cross-flow scrubbing. The co-removal ratio of scandium was less than 0.06%. The Fourier-transform infrared spectra results showed that titanium could be completely removed from the Sc(III) and Ti(IV)-loaded organic phase. Compared with the traditional scrubbing agent containing H2SO4 and H2O2, the new scrubbing agent has the characteristics of high efficiency and strong selectivity.
引用
收藏
页码：1301 / 1309
页数：9
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