Effect of Sodium Nitrite as Leaching Aid on Vanadium Leaching Rate in Stone Coal AITranslate
Abstract AITranslate
The process of vanadium extration from stone coal by acid leaching with NaNO2 as the leaching aid was studied.The effects of sulfuric acid dosage,sodium nitrite dosage,solid-liquid ratio,leaching temperature and leaching time on vanadium leaching rate were investigated by single factor experiments and orthogonal experiments.The results show that the leaching rate of vanadium reaches 95.0%when NaNO2 mass fraction is 1%of the mass of stone coal vanadium ore,the volume consumption of H2SO4 is 30%of the mass of stone coal vanadium ore,the liquid-solid ratio is 0.6∶1,leaching temperature is 100℃,and leaching time is 12 h.Compared with the experiment without sodium nitrite as leaching aid,vanadium leaching rate is increased by 20%.Using NaNO2 oxidative acid leaching technology to extract V not only reduces NaNO2 dosage,but also eliminates the pollution of toxic gases such as HCl and Cl2,saves energy without roasting process,and greatly improves the leaching rate of vanadium.
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Basic Information:
DOI：
Chinese Library Classification Number:TF803.21[冶金工程—有色金属冶金]
Citation Information:
The process of vanadium extration from stone coal by acid leaching with NaNO2 as the leaching aid was studied.The effects of sulfuric acid dosage,sodium nitrite dosage,solid-liquid ratio,leaching temperature and leaching time on vanadium leaching rate were investigated by single factor experiments and orthogonal experiments.The results show that the leaching rate of vanadium reaches 95.0%when NaNO2 mass fraction is 1%of the mass of stone coal vanadium ore,the volume consumption of H2SO4 is 30%of the mass of stone coal vanadium ore,the liquid-solid ratio is 0.6∶1,leaching temperature is 100℃,and leaching time is 12 h.Compared with the experiment without sodium nitrite as leaching aid,vanadium leaching rate is increased by 20%.Using NaNO2 oxidative acid leaching technology to extract V not only reduces NaNO2 dosage,but also eliminates the pollution of toxic gases such as HCl and Cl2,saves energy without roasting process,and greatly improves the leaching rate of vanadium.
quote
| GB/T 7714-2015 | [1] LI Hong-xiang, YAN Wen-bin, CAI Jun, et al. Effect of Sodium Nitrite as Leaching Aid on Vanadium Leaching Rate in Stone Coal[J]. Rare Metals and Cemented Carbides, 2019(4): 13-19. |
| MLA | [1] LI Hong-xiang, et al., "Effect of Sodium Nitrite as Leaching Aid on Vanadium Leaching Rate in Stone Coal." Rare Metals and Cemented Carbides, no. 4, 2019, pp. 13-19. |
| APA | [1] LI Hong-xiang, YAN Wen-bin, CAI Jun, HUA Jun, & GAO Feng. (2019). Effect of Sodium Nitrite as Leaching Aid on Vanadium Leaching Rate in Stone Coal. Rare Metals and Cemented Carbides(4), 13-19. |
| IEEE | [1] LI Hong-xiang, YAN Wen-bin, CAI Jun, HUA Jun, and GAO Feng, "Effect of Sodium Nitrite as Leaching Aid on Vanadium Leaching Rate in Stone Coal," Rare Metals and Cemented Carbides, no. 4, pp. 13-19, 2019. keywords: {stone coal;leaching aids;sodium nitrite;vanadium;oxidative acid leaching} |