Comparison for Vanadium Leaching Behaviors of Three Kinds of Carbonaceous Shale AITranslate
Abstract AITranslate
Study is made on the influences of direct acid leaching and black roasting-acid leaching on vanadium leaching behaviors of three kinds of carbonaceous shale from Xiushui or Pengzhe in Jiangxi province and Tongshan in Hubei province,respectively. The results show that under the conditions of leaching temperature 95 ℃ ,leaching time 4 h,mass ratio of liquid to solid 1 ： 1 ,volume fraction of H2SO4 15% ,mass fraction of CaF2 5 %,the vanadium leaching rates of three kinds of carbonaceous shale treated with direct acid leaching are 92. 39%, 74. 10%and 40. 53%, respectively, while the above leaching rates with black roasting-acid leaching are 85. 53%,90. 78% and 41.59%,respectively. It is found that both the existing forms of vanadium and iron in carbonaceous shale and the contents of acid-consumable minerals have great effects on vanadium leaching. By blank roasting, vanadium in organics can be transformed into free and soluble vanadium oxide, and mica-contained vanadium can be disintegrated to accelerate vanadium leaching. However,the acid-nonconsumable mineral of pyrite could be transformed into the acid-consumable mineral of hematite to hinder vanadium leaching. It is reasonable for the three kinds of carbonaceous shale in which vanadium exists mainly in the form of aluminosilicate including mica to adopt correspondingly different vanadium leaching processes. Direct acid leaching process is suitable for carbonaceous shale from Xiushui inJiangxi Province,blank roasting-acid leaching process is suitable for carbonaceous shale from Pengzhe in Jiangxi Province,and another vanadium extracting process should be adopted for carbonaceous shale from Tongshan in Hubei Province.
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Chinese Library Classification Number:TF841.3[冶金工程—有色金属冶金]
Citation Information:
Study is made on the influences of direct acid leaching and black roasting-acid leaching on vanadium leaching behaviors of three kinds of carbonaceous shale from Xiushui or Pengzhe in Jiangxi province and Tongshan in Hubei province,respectively. The results show that under the conditions of leaching temperature 95 ℃ ,leaching time 4 h,mass ratio of liquid to solid 1 ： 1 ,volume fraction of H2SO4 15% ,mass fraction of CaF2 5 %,the vanadium leaching rates of three kinds of carbonaceous shale treated with direct acid leaching are 92. 39%, 74. 10%and 40. 53%, respectively, while the above leaching rates with black roasting-acid leaching are 85. 53%,90. 78% and 41.59%,respectively. It is found that both the existing forms of vanadium and iron in carbonaceous shale and the contents of acid-consumable minerals have great effects on vanadium leaching. By blank roasting, vanadium in organics can be transformed into free and soluble vanadium oxide, and mica-contained vanadium can be disintegrated to accelerate vanadium leaching. However,the acid-nonconsumable mineral of pyrite could be transformed into the acid-consumable mineral of hematite to hinder vanadium leaching. It is reasonable for the three kinds of carbonaceous shale in which vanadium exists mainly in the form of aluminosilicate including mica to adopt correspondingly different vanadium leaching processes. Direct acid leaching process is suitable for carbonaceous shale from Xiushui inJiangxi Province,blank roasting-acid leaching process is suitable for carbonaceous shale from Pengzhe in Jiangxi Province,and another vanadium extracting process should be adopted for carbonaceous shale from Tongshan in Hubei Province.
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| GB/T 7714-2015 | [1] WANG Fei, ZHANG Yi-min, LIU Tao, et al. Comparison for Vanadium Leaching Behaviors of Three Kinds of Carbonaceous Shale[J]. Rare Metals and Cemented Carbides, 2014(4): 1-6. |
| MLA | [1] WANG Fei, et al., "Comparison for Vanadium Leaching Behaviors of Three Kinds of Carbonaceous Shale." Rare Metals and Cemented Carbides, no. 4, 2014, pp. 1-6. |
| APA | [1] WANG Fei, ZHANG Yi-min, LIU Tao, HUANG Jing, HUANG Xian-bao, XUE Nan-nan, & YUAN Yi-zhong. (2014). Comparison for Vanadium Leaching Behaviors of Three Kinds of Carbonaceous Shale. Rare Metals and Cemented Carbides(4), 1-6. |
| IEEE | [1] WANG Fei, ZHANG Yi-min, LIU Tao, HUANG Jing, HUANG Xian-bao, XUE Nan-nan, and YUAN Yi-zhong, "Comparison for Vanadium Leaching Behaviors of Three Kinds of Carbonaceous Shale," Rare Metals and Cemented Carbides, no. 4, pp. 1-6, 2014. keywords: {carbonaceous shale;vanadium;direct acid leaching;black roasting-acid leaching;ROM characteristic;existing form} |