Study on Oxidation Leaching of Vanadium from Stone Coal with Sodium Persulfate and its Kinetics AITranslate
Abstract AITranslate
In order to explore the mechanism of oxidation leaching of stone coal,the vanadium was leached directly from stone coal vanadium ore by sulfuric acid solution at atmospheric pressure.By adding sodium persulfate in the process of acid leaching,the effects of various conditions on vanadium leaching rate were investigated.The results show that V leaching rate reached 88.9% under the experimental conditions of sodium persulfate 2% ,sulfuric acid 35 %,solid-liquid ratio 1:1,leaching temperature 95℃ and leaching time 11 h.Fitting the V leaching rate-time curves at different reaction temperatures shows that the oxidation leaching process conforms to the shrinking core model and the leaching process is controlled by the chemical reaction on the particle surface.According to Arrhenius equation,the apparent activation energy of the reaction was approximately calculated to be 66.08 kJ ·mol^-1 by using curve fitting method.
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Basic Information:
DOI：
Chinese Library Classification Number:TF841.3[冶金工程—有色金属冶金]
Citation Information:
In order to explore the mechanism of oxidation leaching of stone coal,the vanadium was leached directly from stone coal vanadium ore by sulfuric acid solution at atmospheric pressure.By adding sodium persulfate in the process of acid leaching,the effects of various conditions on vanadium leaching rate were investigated.The results show that V leaching rate reached 88.9% under the experimental conditions of sodium persulfate 2% ,sulfuric acid 35 %,solid-liquid ratio 1:1,leaching temperature 95℃ and leaching time 11 h.Fitting the V leaching rate-time curves at different reaction temperatures shows that the oxidation leaching process conforms to the shrinking core model and the leaching process is controlled by the chemical reaction on the particle surface.According to Arrhenius equation,the apparent activation energy of the reaction was approximately calculated to be 66.08 kJ ·mol^-1 by using curve fitting method.
quote
| GB/T 7714-2015 | [1] HUA Jun, YAN Wen-bin, GAO Feng, et al. Study on Oxidation Leaching of Vanadium from Stone Coal with Sodium Persulfate and its Kinetics[J]. Rare Metals and Cemented Carbides, 2019(1): 1-5. |
| MLA | [1] HUA Jun, et al., "Study on Oxidation Leaching of Vanadium from Stone Coal with Sodium Persulfate and its Kinetics." Rare Metals and Cemented Carbides, no. 1, 2019, pp. 1-5. |
| APA | [1] HUA Jun, YAN Wen-bin, GAO Feng, & CAI Jun. (2019). Study on Oxidation Leaching of Vanadium from Stone Coal with Sodium Persulfate and its Kinetics. Rare Metals and Cemented Carbides(1), 1-5. |
| IEEE | [1] HUA Jun, YAN Wen-bin, GAO Feng, and CAI Jun, "Study on Oxidation Leaching of Vanadium from Stone Coal with Sodium Persulfate and its Kinetics," Rare Metals and Cemented Carbides, no. 1, pp. 1-5, 2019. keywords: {stone coal;vanadium;sodium persulfate;oxidation leaching;kinetics} |