Characterization analysis of goethite residue from zinc hydrometallurgy plants

被引：0

作者：

Li Y. ^{[1
]}

Gao L. ^{[2
]}

Liu Z. ^{[2
]}

机构：

[1] School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou

[2] School of Metallurgy and Environment, Central South University, Changsha

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Goethite residue; Iron removal; Occurrence characteristics; Zinc; Zinc hydrometallurgy;

D O I：

10.11817/j.issn.1672-7207.2019.02.002

中图分类号：

学科分类号：

摘要：

Considering the great variation of iron and zinc mass fraction and poor filtration performance in the goethite residue from zinc hydrometallurgy plants, the goethite residue samples from different zinc plants were collected and characterized systematically. The occurrence characteristics of zinc and iron in goethite residue and its formation causes were revealed. The results show that although there is great difference in the mass fractions of zinc and iron in these samples, the characterization of particle size and distribution of Fe and Zn are similar. Particles smaller than 38 μm in diameter in the sample account for vast majority, and contain high mass fraction of iron and low mass fraction of zinc. While particles of greater than 80 μm in diameter contain up to 30% zinc, but only 15% iron. In other words, besides acid washing process, size classification can also reduce the mass fraction of zinc in the goethite residue. Most of the iron in the goethite samples exists as enrichment phase. For zinc, in addition to zinc rich phase, some zinc is widely scattered in the sample. For obtaining ideal iron removed goethite residue, the quality of neutralizer also need to be strictly controlled in addition to improvement of iron precipitation parameters. © 2019, Central South University Press. All right reserved.

引用

页码：257 / 263

页数：6

共 23 条

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