Leaching kinetics of celestite in nitric acid solutions

论文摘要

In this study, strontium nitrate extraction from celestite in nitric acid solutions was investigated using the leaching method. The influences of acid concentration, solid-to-liquid ratio, stirring speed, and reaction temperature on the leaching of strontium from celestite concentrate were studied. The results showed that the leaching rate increased with increasing acid concentration, stirring speed, and temperature and decreased with increasing solid-to-liquid ratio. The particle size was fixed in all of the dissolution experiments. The results showed that the stirring speed and the temperature were the most influential parameters with respect to the leaching process. The kinetic model best fit control by diffusion through the product layer. The activation energy of the dissolution celestite in nitric acid solutions was calculated to be 42.22 kJ/mol.

论文目录

• 1. Introduction
• 2. Experimental
• 3. Results and discussion
•   3.1. Dissolution reactions
•   3.2. Influence of nitric acid concentration
•   3.3. Influence of the solid-to-liquid ratio
•   3.4. Influence of reaction temperature
•   3.5. Influence of stirring speed
•   3.6. Characterization of leaching residue
•   3.7. Kinetic analysis
• 4. Conclusions

文章来源

类型: 期刊论文

作者: Feray Kocan,Umran Hicsonmez

来源: International Journal of Minerals Metallurgy and Materials 2019年01期

年度: 2019

分类: 工程科技Ⅱ辑,工程科技Ⅰ辑

专业: 冶金工业

单位: Faculty of Arts and Sciences, Chemistry Department, Manisa Celal Bayar University

基金: financially supported by the Science Research Project Committee of Manisa Celal Bayar University(No.BAP 2013–101)

分类号: TF827.2

页码: 11-20

总页数: 10

文件大小: 398K

下载量: 14