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Crystallization and separation of potassium vanadate in highly concentrated potassium hydroxide solution

文献类型：会议论文

作者Yang, Na1,2; Zheng, Shili1; Wang, Shaona1; Qin, Yaling1; Xie, Wanli3; Zhou, Bingjing3; Zhang, Yi1
出版日期1905-07-04
会议日期December 23, 2011 - December 25, 2011
会议地点Beihai, China
关键词Vanadium - Vanadium pentoxide - Solutions - Potassium hydroxide - Crystallization
卷号396-398
DOI10.4028/www.scientific.net/AMR.396-398.655
页码655-662
英文摘要The crystallization behavior of potassium vanadate from highly concentrated potassium hydroxide aqueous solution was investigated. The effect of various parameters including KOH concentration, V2O5 concentration, final crystallization temperature, cooling rate, stirring speed and additive amount of seed were examined. The optimal experimental conditions for K3VO4 crystallization were obtained as follows: KOH concentration 800鈭?50 g/L, KOH-to-V2O5 mass ratio 8鈭?, stirring speed 200 r/min, crystallization temperature from 80掳C to 40掳C with natural cooling, and seed addition 2% wt. Under optimal conditions, the K3VO4 crystallization yield of 87% was obtained, and the purity of crystals was about 90%.
资助机构Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
会议录2011 International Conference on Chemical, Material and Metallurgical Engineering, ICCMME 2011
学科主题Slags
源URL[http://ir.ipe.ac.cn/handle/122111/59513]  
作者单位1.National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
2.Graduate University of the Chinese Academy of Sciences, Beijing, 100049, China
3.Research Center of Vanadium and Titanium Technology, Chengde Iron and Steel Group Co. LTD., Hebei Iron and Steel Group Co. LTD., Chengde, Hebei 067102, China
推荐引用方式
GB/T 7714		 Yang, Na,Zheng, Shili,Wang, Shaona,et al. Crystallization and separation of potassium vanadate in highly concentrated potassium hydroxide solution[C]. 见:. Beihai, China. December 23, 2011 - December 25, 2011.

入库方式： OAI收割

来源：过程工程研究所

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