Mechanical activation on extraction of vanadium from vanadium slag by calcification roasting-acid leaching process

被引：0

作者：

Huang Q.-Y. ^{[1
]}

Xiang J.-Y. ^{[2
,3
]}

Pei G.-S. ^{[2
]}

Wang X. ^{[2
]}

Lü X.-W. ^{[2
,3
]}

机构：

[1] College of Materials and Metallurgical Engineering, Chongqing University of Science and Technology, Chongqing

[2] College of Materials Science and Engineering, Chongqing University, Chongqing

[3] Chongqing Key Laboratory of Vanadium-titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing

来源：

Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2020年 / 30卷 / 04期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Acid leaching; Calcification roasting; Leaching fraction; Mechanical activation; Vanadium slag;

D O I：

10.11817/j.ysxb.1004.0609.2020-35745

中图分类号：

学科分类号：

摘要：

In order to account the fact that the extraction of vanadium from vanadium-bearing converter slag by calcification roasting-acid leaching process is limited, an attempt was exploited for improving the extraction of vanadium with high energy ball milling pretreatment. The particle size distribution, specific surface area and phase transformation of the vanadium slag before and after activation were investigated by laser diffraction particle size analyser, micro-pore physisorption analyser, and XRD, respectively. The effects of mechanical activation on the calcification roasting and leaching were also investigated. The results demonstrate that the mechanical activation significantly increases the specific surface area, lattice distortion, and microscopic stress of the vanadium slag, and reduces the particle size, thus improves the kinetic conditions of the calcification roasting. Under the condition of leaching for 20 min, the leaching efficiency of vanadium can be increased by 10% by mechanical activation for 80 min, and the optimal roasting temperature can be reduced by 100℃. © 2020, Science Press. All right reserved.

引用

页码：858 / 865

页数：7

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