Separation of V and Mn in calcification roasting-acid leachate of V slag by simultaneous amine extraction and CO<sub>2</sub> mineralization

Hu Ke; Han Huiguo; Wu Pan; He Jian; Jiang Wei; Liu Changjun; Liang Bin

doi:10.7513/j.issn.1004-7638.2023.03.002

Volume 44 Issue 3

Jun. 2023

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Hu Ke, Han Huiguo, Wu Pan, He Jian, Jiang Wei, Liu Changjun, Liang Bin. Separation of V and Mn in calcification roasting-acid leachate of V slag by simultaneous amine extraction and CO2 mineralization[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 9-15. doi: 10.7513/j.issn.1004-7638.2023.03.002

Citation:

Hu Ke, Han Huiguo, Wu Pan, He Jian, Jiang Wei, Liu Changjun, Liang Bin. Separation of V and Mn in calcification roasting-acid leachate of V slag by simultaneous amine extraction and CO₂ mineralization[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 9-15. doi: 10.7513/j.issn.1004-7638.2023.03.002

Citation:

Hu Ke, Han Huiguo, Wu Pan, He Jian, Jiang Wei, Liu Changjun, Liang Bin. Separation of V and Mn in calcification roasting-acid leachate of V slag by simultaneous amine extraction and CO₂ mineralization[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(3): 9-15. doi: 10.7513/j.issn.1004-7638.2023.03.002

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Separation of V and Mn in calcification roasting-acid leachate of V slag by simultaneous amine extraction and CO₂ mineralization

doi: 10.7513/j.issn.1004-7638.2023.03.002

School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China

Received Date: 2023-02-27
Publish Date: 2023-06-30

Abstract

Abstract

The efficient separation of vanadium and manganese from an acid leachate of the calcification roasting vanadium slag is quite difficult and costly, particularly for those leachates with high vanadium and manganese concentrations. A novel process was investigated for the separation of vanadium and manganese using trioctylamine and CO₂. The chemical separation basic of V and Mn was discussed. The distribution law of the major metallic components, particularly V and Mn, of the acid leachate in organic phase, aqueous phase and precipitated phase were quantified. The effects of concentrations of vanadium and manganese, and the recycle of trioctylamine on the separation efficiency were elucidated. The techno-economic feasibility of the new process was discussed. The results show that a vanadium extraction rate of 99% can be achieved even for an acid leachate with high concentration of manganese. The vanadium extraction rate of 97% and manganese precipitation rate of 96% are maintained after 5 regeneration cycles. The new process is techno-economically applausive.
- vanadium extraction,
- vanadium slag,
- calcification roasting,
- acid leachate,
- extraction,
- mineralization,
- separation of vanadium and manganese,
- carbon dioxide

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References(20)

References

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