Leaching of vanadium from carbonaceous shale

被引：63

作者：

Zhou, Xiangyang ^{[1
]}

Li, Changlin ^{[1
]}

Li, Jie ^{[1
]}

Liu, Hongzhuan ^{[1
]}

Wu, Shangyuan ^{[1
]}

机构：

[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

HYDROMETALLURGY | 2009年 / 99卷 / 1-2期

关键词：

Leaching; Vanadium; Carbonaceous shale; NH(4)F; STONE COAL; EXTRACTION;

D O I：

10.1016/j.hydromet.2009.07.008

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The leaching of vanadium from carbonaceous shale using dilute H(2)SO(4) was investigated, and the mechanism of leaching determined. The results showed that higher leaching efficiency of vanadium was obtained by increasing initial concentration of H(2)SO(4), raising leaching temperature and prolonging leaching time. Addition of ammonium fluoride also enhanced recovery. A recovery of 92% was obtained using a liquid to solid ratio 4:1, initial H(2)SO(4) concentration 18%, NH(4)F addition 4.8 wt.% of carbonaceous shale, leaching temperature 95 degrees C and contact time 8 h; the recovery was only 56% without NH(4)F The presence of NH(4)F enhanced the leaching of vanadiferous mica. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：97 / 99

页数：3

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