A literature review on leaching and recovery of vanadium

被引:138
作者
Peng, Hao [1 ]
机构
[1] Yangtze Normal Univ, Coll Chem & Chem Engn, Chongqing Key Lab Inorgan Special Funct Mat, Chongqing 408100, Peoples R China
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2019年 / 7卷 / 05期
关键词
Vanadium; Acid leaching; Alkaline leaching; Roasting; SOLVENT-EXTRACTION; STONE COAL; ION-EXCHANGE; AMMONIA NITROGEN; SLAG; CHROMIUM; SEPARATION; KINETICS; EFFICIENT; ALKALINE;
D O I
10.1016/j.jece.2019.103313
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Vanadium as an important national strategy resource is widely used in many fields due to its excellent physicochemical properties. Much attention had been focused on recovering vanadium from vanadium titano-magnetite and stone coal as they were the main vanadium resources in China. Sodium roasting technology was the earliest technology applied in recovering vanadium, high recovery efficiency of vanadium was obtained along with serious environment problem like corrosive gases and hazardous wastewater. Calcium roasting technology avoided above problems, but high energy-cost and low recovery was remained. Non-salt roasting technology was suitable for limited vanadium resource. Vanadium was leached out after roasting and the leaching medium was divided into three parts according to the roasting technology. Recover process of vanadium depended on the vanadium species and pH in the leaching solution. Hydrolysis was the easily technology with most impurities. Ammonium precipitation was the common process for every technology. And high purity of V2O5 was obtained by calcining precipitation of recovery process. Overall, the industry of vanadium leaching was still underdeveloped, and much intensive research work was needed.
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页数:7
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