硫酸铵对异极矿表面硫化锌物种形成的影响及其在硫化浮选中的作用研究

张茜; 王瑜; 邓久帅; 白中义; 徐宏祥; 孟庆峰; 靳达; 孙振武

doi:10.1007/s12613-023-2650-5

Volume 30 Issue 11

Nov. 2023

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文章导航 > 矿物冶金与材料学报（英文） > 2023 > 30(11): 2147-2156

Xi Zhang, Yu Wang, Jiushuai Deng, Zhongyi Bai, Hongxiang Xu, Qingfeng Meng, Da Jin, and Zhenwu Sun, Effect of ammonium sulfate on the formation of zinc sulfide species on hemimorphite surface and its role in sulfidation flotation, Int. J. Miner. Metall. Mater., 30(2023), No. 11, pp. 2147-2156. https://doi.org/10.1007/s12613-023-2650-5

Cite this article as:

Xi Zhang, Yu Wang, Jiushuai Deng, Zhongyi Bai, Hongxiang Xu, Qingfeng Meng, Da Jin, and Zhenwu Sun, Effect of ammonium sulfate on the formation of zinc sulfide species on hemimorphite surface and its role in sulfidation flotation, Int. J. Miner. Metall. Mater., 30(2023), No. 11, pp. 2147-2156. https://doi.org/10.1007/s12613-023-2650-5

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研究论文

硫酸铵对异极矿表面硫化锌物种形成的影响及其在硫化浮选中的作用研究

1)
中国矿业大学(北京) 化学与环境工程学院，有色金属行业共伴生资源分离加工重点实验室，北京 100083，中国
2)
中国矿业大学(北京)内蒙古研究院，鄂尔多斯 017001，中国
3)
省部共建复杂有色金属资源清洁利用国家重点实验室，昆明 650093，中国
4)
有色金属行业三稀资源综合利用工程技术研究中心，北京 100083，中国

* 共同第一作者

通讯作者:
邓久帅 E-mail: dengshuai689@163.com

文章亮点

（1）硫酸铵能有效促进异极矿表面的硫化作用。

（2）[Zn(NH₃)_i]²⁺ (i = 1–4)生成并以过渡态的形式参与硫化反应。

（3）在硫化过程中，硫酸铵加快了异极矿的硫化反应速率。

（4）硫酸铵处理后异极矿表面生成了更加致密稳定的硫化层。

中文摘要

锌在有色金属工业中起着至关重要的作用。随着硫化锌矿石的逐渐枯竭，氧化锌矿石中锌的富集和利用越来越受到人们的重视。异极矿是一种典型的氧化锌矿物，常采用硫化-黄药浮选法回收。异极矿独特的表面结构导致其与硫化剂作用困难，因此，有效强化表面硫化作用是采用泡沫浮选法回收异极矿的关键。本文通过电感耦合等离子体发射光谱仪（ICP-OES）、溶液组分化学计算（Visual MINTEQ）、X射线光电子能谱分析（XPS）、飞行时间二次离子质谱分析（ToF-SIMS）和微浮选试验等手段，系统研究了硫酸铵对异极矿表面硫化锌物种形成的影响及其在硫化浮选中的作用。结果表明，硫酸铵对异极矿的硫化浮选具有明显促进作用。这是由于经硫酸铵处理后，异极矿浮选体系中以Zn²⁺和(Zn[NH₃]_i)²⁺(i = 1–4)形式存在的锌组分数量增加，有利于其与溶液中的硫组分相互作用，进而在异极矿表面形成致密稳定的硫化锌层。在硫化过程中，锌铵络合物(Zn[NH₃]_i)²⁺(i = 1–4)是以过渡态的形式参与异极矿的硫化反应。此外，硫酸铵还加速了异极矿的硫化反应。

关键词:

Research Article

Effect of ammonium sulfate on the formation of zinc sulfide species on hemimorphite surface and its role in sulfidation flotation

+ Author Affiliations

1)
Key Laboratory of Separation and Processing of Symbiotic-Associated Mineral Resources in Non-ferrous Metal Industry, School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
2)
Inner Mongolia Research Institute, China University of Mining and Technology (Beijing), Ordos 017001, China
3)
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming 650093, China
4)
Engineering Technology Research Centre for Comprehensive Utilization of Rare Earth, Rare Metal and Rare-Scattered in Non-ferrous Metal Industry, China University of Mining and Technology (Beijing), Beijing 100083, China

Jiushuai Deng is a youth editorial board member for this journal and was not involved in the editorial review or the decision to publish this article. The authors confirm that there are no known conflicts of interest associated with this publication.
*These authors contributed equally to this work.

Corresponding author:
Jiushuai Deng E-mail: dengshuai689@163.com
Received: 1 November 2022; Revised: 7 April 2023; Accepted: 10 April 2023; Available online: 12 April 2023

Abstract

Abstract

Effectively strengthening the surface sulfidation is essential for recovering hemimorphite by froth flotation. In this work, inductively coupled plasma optical emission spectrometer (ICP-OES) measurements, Visual MINTEQ calculation, X-ray photoelectron spectroscopy (XPS) analysis, time of flight secondary ion mass spectrometry (ToF-SIMS) analysis, and micro-flotation experiments were explored to systematically investigate the effect of ammonium sulfate ((NH₄)₂SO₄) on the formation of zinc sulfide species on hemimorphite surface and its role in sulfidation flotation. The results showed that (NH₄)₂SO₄ exhibited a positive influence on hemimorphite sulfidation flotation. It was ascribed to the number of zinc components in the form of Zn²⁺ and [Zn(NH₃)_i]²⁺ (i = 1–4) increased in the flotation system after hemimorphite treatment with (NH₄)₂SO₄, which was beneficial to its interaction with sulfur species in solution, resulting in a dense and stable zinc sulfide layer generated on the hemimorphite surface. [Zn(NH₃)_i]²⁺ participated in the sulfidation reaction of hemimorphite as a transition state. In addition, the sulfidation reaction of hemimorphite was accelerated by (NH₄)₂SO₄. Thus, (NH₄)₂SO₄ presents a vital role in promoting the sulfidation of hemimorphite.
- hemimorphite;
- sulfidation;
- ammonium sulfate;
- zinc sulfide species;
- adsorption;
- flotation

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