网站首页|课题组概况|新闻公告|师资力量|研究生培养|科研成果|常用学术期刊|学术交流|资料下载
文章内容页
当前位置: 网站首页>>科研成果>>英文论文>>正文
Han H, Sun W, Hu Y, et al. The application of zinc calcine as a neutralizing agent for the goethite process in zinc hydrometallurgy[J]. Hydrometallurgy, 2014, 147: 120-126.
2015-09-09 10:49     (浏览次数)

Abstract

The industrial application of the goethite process has been restricted due to the low recovery of zinc and the great loss of lead and silver in zinc calcine with iron residues. In this study, we examined the properties of + 35 μm zinc calcine and assessed its feasibility for serving as a neutralizing agent in the goethite process. Due to an insoluble fragment or porous structure, the particle size of + 35 μm zinc calcine only decreased slightly at pH 2–3 and 80–90 °C. Large differences between iron precipitate and leach residues in the particle size and specific gravity favored the separation, as proven by using the terminal settling velocity deduced from Stroke's law. A combined analysis of environmental scanning electron microscopy, X-ray diffraction, energy dispersive spectrometry, and laser particle size analysis provided a fundamental understanding of the properties and behaviors of different particles. This study proved that in the goethite process, + 35 μm zinc calcine was a suitable neutralizing agent that could work efficiently and be separated easily from iron residues in the goethite process. Moreover, it ensured the high recovery of valuable metals such as zinc, lead, and silver.  

附件【The application of zinc calcine as a neutralizing agent for the goethite process in zinc hydrometallurgy.pdf已下载
关闭窗口

版权所有:中南大学胡岳华教授课题组