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

IF 5.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Minerals, Metallurgy, and Materials Pub Date : 2023-11-15 DOI:10.1007/s12613-023-2650-5

Xi Zhang, Yu Wang, Jiushuai Deng, Zhongyi Bai, Hongxiang Xu, Qingfeng Meng, Da Jin, Zhenwu Sun

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引用次数: 0

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.

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硫酸铵对半亚铁表面硫化锌形成的影响及其在硫化浮选中的作用

有效强化表面硫化作用是泡沫浮选回收半铁锌矿的关键。通过电感耦合等离子体发射光谱仪(ICP-OES)测量、Visual MINTEQ计算、x射线光电子能谱(XPS)分析、飞行时间二次离子质谱(ToF-SIMS)分析和微浮选实验，系统研究了硫酸铵((NH4)2SO4)对半亚晶表面硫化锌形成的影响及其在硫化浮选中的作用。结果表明:(NH4)2SO4对半铁榴石硫化浮选有积极影响;这是由于(NH4)2SO4处理半亚铁后，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种相互作用，在半亚铁表面形成致密稳定的硫化锌层。[Zn(NH3)i]2+作为过渡态参与了半亚铁的硫化反应。此外，(NH4)2SO4还能加速半亚铁的硫化反应。因此，(NH4)2SO4对半亚铁的硫化起着至关重要的促进作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Minerals, Metallurgy, and Materials 工程技术-材料科学：综合

CiteScore

9.30

自引率

16.70%

发文量

205

审稿时长

2 months

期刊介绍： International Journal of Minerals, Metallurgy and Materials (Formerly known as Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material) provides an international medium for the publication of theoretical and experimental studies related to the fields of Minerals, Metallurgy and Materials. Papers dealing with minerals processing, mining, mine safety, environmental pollution and protection of mines, process metallurgy, metallurgical physical chemistry, structure and physical properties of materials, corrosion and resistance of materials, are viewed as suitable for publication.