捕收剂SLS和抑制剂SPP对铅氧化矿物与赤铁矿浮选分离的协同作用

唐鸿鹄; 刘丙建; 李梦闪; 张前程; 张雄星; 江锋

doi:10.1007/s12613-023-2815-2

Volume 31 Issue 9

Sep. 2024

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文章导航 > 矿物冶金与材料学报（英文） > 2024 > 31(9): 1975-1984

Honghu Tang, Bingjian Liu, Mengshan Li, Qiancheng Zhang, Xiongxing Zhang, and Feng Jiang, Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite, Int. J. Miner. Metall. Mater., 31(2024), No. 9, pp. 1975-1984. https://doi.org/10.1007/s12613-023-2815-2

Cite this article as:

Honghu Tang, Bingjian Liu, Mengshan Li, Qiancheng Zhang, Xiongxing Zhang, and Feng Jiang, Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite, Int. J. Miner. Metall. Mater., 31(2024), No. 9, pp. 1975-1984. https://doi.org/10.1007/s12613-023-2815-2

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研究论文

捕收剂SLS和抑制剂SPP对铅氧化矿物与赤铁矿浮选分离的协同作用

1)
中南大学资源加工与生物工程学院, 长沙 410083, 中国
2)
中南大学金属资源开发利用碳减排教育部工程研究中心, 长沙 410083, 中国

通讯作者:
江锋 E-mail: feng_jiang@csu.edu.cn

文章亮点

(1) SLS和SPP的协同作用对铅氧化矿物和赤铁矿具有良好的浮选分离效果。

(2) SLS在PbOHCl和PbSO₄表面表现出较强的选择性化学吸附行为。

(3) SPP选择性吸附于Fe₂O₃表面，有效抑制了赤铁矿的浮选。

中文摘要

作为国民经济的支柱产业，钢铁行业同时也不可避免地产生了大量包含铅资源和有害元素的烧结粉尘。浮选被视为是一种从烧结粉尘中回收铅资源的有效技术，但浮选过程中如何实现铅氧化物与氧化铁的高效分离仍然具有挑战性。本论文系统研究了十二烷基硫酸钠(SLS，C₁₂H₂₅SO₄Na)和焦磷酸钠(SPP，Na₄P₂O₇)在选择性浮选分离铅氧化矿物(PbOHCl和PbSO₄)与赤铁矿(Fe₂O₃)过程中的协同作用。首先通过单矿物浮选试验和人工混合矿浮选试验确定了最佳浮选条件，实现了铅氧化矿物的高效回收与赤铁矿的有效抑制。通过Zeta电位测量、傅里叶变换红外光谱(FT-IR)分析、吸附量测定和X射线光电子能谱(XPS)分析，揭示了药剂在矿物表面的吸附行为。研究结果表明，捕收剂SLS在PbOHCl和PbSO₄表面上的吸附强度较大且不受抑制剂的影响，而抑制剂SPP可选择性吸附于Fe₂O₃表面，并抑制后续SLS的吸附。SLS和SPP在矿物表面的选择性吸附行为实现了铅氧化矿物和赤铁矿的高效浮选分离。

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Research Article

Cooperative effect of sodium lauryl sulfate collector and sodium pyrophosphate depressant on the flotation separation of lead oxide minerals from hematite

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Abstract

Abstract

As a cornerstone of the national economy, the iron and steel industry generates a significant amount of sintering dust containing both valuable lead resources and deleterious elements. Flotation is a promising technique for lead recovery from sintering dust, but efficient separation from Fe₂O₃ is still challenging. This study investigated the cooperative effect of sodium lauryl sulfate (SLS, C₁₂H₂₅SO₄Na) and sodium pyrophosphate (SPP, Na₄P₂O₇) on the selective flotation of lead oxide minerals (PbOHCl and PbSO₄) from hematite (Fe₂O₃). Optimal flotation conditions were first identified, resulting in high recovery of lead oxide minerals while inhibiting Fe₂O₃ flotation. Zeta potential measurements, Fourier transform infrared spectroscopy (FT-IR) analysis, adsorption capacity analysis, and X-ray photoelectron spectroscopy (XPS) studies offer insights into the adsorption behaviors of the reagents on mineral surfaces, revealing strong adsorption of SLS on PbOHCl and PbSO₄ surfaces and remarkable adsorption of SPP on Fe₂O₃. The proposed model of reagent adsorption on mineral surfaces illustrates the selective adsorption behavior, highlighting the pivotal role of reagent adsorption in the separation process. These findings contribute to the efficient and environmentally friendly utilization of iron ore sintering dust for lead recovery, paving the way for sustainable resource management in the iron and steel industry.
- sintering dust;
- flotation separation;
- sodium lauryl sulfate;
- sodium pyrophosphate;
- selective adsorption

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