Study on calcification reduction sodium removal of vanadium extraction tailings by coal-based rotary kiln method

Wang Zhaocai; Zheng Fuqiang; Liu Chen; Hu Bing; Shi Benjing

doi:10.7513/j.issn.1004-7638.2024.01.014

Volume 45 Issue 1

Feb. 2024

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Wang Zhaocai, Zheng Fuqiang, Liu Chen, Hu Bing, Shi Benjing. Study on calcification reduction sodium removal of vanadium extraction tailings by coal-based rotary kiln method[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 91-95. doi: 10.7513/j.issn.1004-7638.2024.01.014

Citation:

Wang Zhaocai, Zheng Fuqiang, Liu Chen, Hu Bing, Shi Benjing. Study on calcification reduction sodium removal of vanadium extraction tailings by coal-based rotary kiln method[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 91-95. doi: 10.7513/j.issn.1004-7638.2024.01.014

Citation:

Wang Zhaocai, Zheng Fuqiang, Liu Chen, Hu Bing, Shi Benjing. Study on calcification reduction sodium removal of vanadium extraction tailings by coal-based rotary kiln method[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(1): 91-95. doi: 10.7513/j.issn.1004-7638.2024.01.014

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Study on calcification reduction sodium removal of vanadium extraction tailings by coal-based rotary kiln method

doi: 10.7513/j.issn.1004-7638.2024.01.014

Wang Zhaocai^{1, 2
,},
Zheng Fuqiang^{1, 2},
Liu Chen^{1, 2},
Hu Bing^{1, 2},
Shi Benjing^{1, 2}

1.
Zhongye Changtian International Engineering Co., Ltd., Changsha 410007, Hunan, China
2.
National Engineering Research Center of Sintering and Pelletizing Equipment System, Changsha 410205, Hunan, China

More Information

Received Date: 2023-09-21
Publish Date: 2024-02-29

Abstract

Abstract

In view of the high sodium content in vanadium extraction tailings, which leads to the difficulty of returning to the sintering-blast furnace process for recycling, herein we proposed a calcification reduction sodium removal technology route for vanadium extraction tailings based on coal-based rotary kiln reduction, and conducted a semi-industrial test on a Ø1 m×10 m rotary kiln pilot line. The influence of reduction time in the high temperature section, white ash ratio, into the kiln ton-ball coke ratio and high temperature reduction time on vanadium extraction tailings sodium removal was mainly studied. At the same time, the performance of pellets after desalination and the situation of kiln formation in the rotary kiln were analyzed. Under the conditions of high temperature section temperature of 1100～1160 ℃, high temperature section time of 1.8～2 h, into the kiln ton-ball coke ratio of 800～1000 kg, white ash ratio of 32.5%～41%, the sodium removal rate of vanadium extraction tailings can reach more than 80%, and the coke consumption is 359 kg. The agglomeration in the kiln is mainly composed of vanadium extraction tailings pellet powder and coke ash powder. The agglomeration is loose and porous, consisting of fine particles which are sticky to each other. The agglomeration will fall off automatically during the kiln rotation process, without obvious kiln formation phenomenon.
- vanadium extraction tailing,
- calcification reduction,
- sodium removal,
- rotary kiln reduction

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References(17)

References

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