过程工程学报 ›› 2026, Vol. 26 ›› Issue (9): 959-975.DOI: 10.12034/j.issn.1009-606X.225297
何东东1(
), 刘建1,2,3(
), 黄蓉1, 尹红1, 范璞文1
收稿日期:2025-11-26
修回日期:2026-02-12
出版日期:2026-03-27
发布日期:2026-09-28
通讯作者:
刘建 1710175471@qq.com;Jianliu@kust.edu.cn
作者简介:何东东,硕士研究生,主要从事浮选理论与工艺的研究,E-mail: 1710175471@qq.com;基金资助:
Dongdong HE1(
), Jian LIU1,2,3(
), Rong HUANG1, Hong YIN1, Puwen FAN1
Received:2025-11-26
Revised:2026-02-12
Online:2026-03-27
Published:2026-09-28
Contact:
Jian LIU 1710175471@qq.com;Jianliu@kust.edu.cn
摘要:
(1)介绍传统黄铁矿抑制剂的缺点及未来发展趋势。
(2)叙述黄铁矿的晶体结构与表面性质。
(3)列举黄铁矿抑制剂的分类与作用机理。
(4)对比计算化学在黄铁矿抑制研究中的应用。
中图分类号:
何东东, 刘建, 黄蓉, 尹红, 范璞文. 黄铁矿绿色浮选抑制剂及其微观抑制机理计算化学研究进展[J]. 过程工程学报, 2026, 26(9): 959-975.
Dongdong HE, Jian LIU, Rong HUANG, Hong YIN, Puwen FAN. Research progress on green flotation depressants for pyrite and computational chemistry of microscopic depressing mechanisms[J]. The Chinese Journal of Process Engineering, 2026, 26(9): 959-975.
| pH | Main oxidation products | Surface property | Effect on floatability |
|---|---|---|---|
| Acidic (pH<4) | S0, | Hydrophobic | Promotes flotation |
| Neutral (pH 5~8) | FeOOH, | Moderately hydrophilic | Collector-dependent |
| Alkaline (pH>9) | Fe(OH)3, | Strongly hydrophilic | Depresses flotation |
表1 不同pH条件下黄铁矿表面的主要氧化产物
Table 1 Main oxidation products on the pyrite surface under different pH conditions
| pH | Main oxidation products | Surface property | Effect on floatability |
|---|---|---|---|
| Acidic (pH<4) | S0, | Hydrophobic | Promotes flotation |
| Neutral (pH 5~8) | FeOOH, | Moderately hydrophilic | Collector-dependent |
| Alkaline (pH>9) | Fe(OH)3, | Strongly hydrophilic | Depresses flotation |
图4 酚类化合物、巯基乙酸钠、二乙基二硫代氨基甲酸钠及双(羧甲基)三硫代碳酸盐的化学结构式
Fig.4 Chemical structures of phenolic compounds, sodium thioglycolate, sodium diethyldithiocarbamate, and bis(carboxymethyl) trithiocarbonate
| pH | Attached bacteria/(bacteria/g) | Area of attached bacteria/(m2/g) | Percentage of covered pyrite surface/% |
|---|---|---|---|
| 4 | 2.58×108 | 1.68×10-4 | 1.63 |
| 8 | 1.99×109 | 1.29×10-3 | 12.59 |
表2 在海水中15 min 时氧化亚铁酸硫杆菌(A. f菌)覆盖在黄铁矿表面的百分比[59]
Table 2 Percentage of Acidithiobacillus ferrooxidans (A. f) coverage on pyrite surface after 15 min in seawater[59]
| pH | Attached bacteria/(bacteria/g) | Area of attached bacteria/(m2/g) | Percentage of covered pyrite surface/% |
|---|---|---|---|
| 4 | 2.58×108 | 1.68×10-4 | 1.63 |
| 8 | 1.99×109 | 1.29×10-3 | 12.59 |
图7 MFA在弱碱性溶液体系中选择性抑制黄铁矿以实现黄铜矿浮选的示意图[60]
Fig.7 Schematic diagram of selective depressing effect of MFA on pyrite for floating chalcopyrite in weak-alkalinity solution system[60]
图8 PA在pH≈8的溶液体系中选择性抑制黄铁矿以实现黄铜矿浮选的作用机理[63]
Fig.8 Mechanism of PA in selectively depressing pyrite to enable chalcopyrite flotation in solution system at pH≈8[63]
| Comparative aspect | Typical representatives | pH range | Core mechanism | Industrial status | Relative cost | Main advantages | Main limitations | Ref. |
|---|---|---|---|---|---|---|---|---|
| Traditional inorganic depressants | Lime, cyanide | High alkalinity | High-alkalinity oxide film/strong complexation adsorption | Widely applied/restricted or banned | Extremely low overall | Low cost, stable performance | High-alkalinity scaling, loss of precious metals, toxicity risk (cyanide) | [ |
| Organic small-molecule depressants | SMA, PA, L-dopa | Near neutral to weakly alkaline | Functional group chemisorption | Laboratory/pilot-scale testing | Medium-high | High selectivity, molecular designability | High cost, unknown stability, limited case studies | [ |
| Polymer depressants | Dextrin, carrageenan, CMC | Wide range | Steric hindrance and hydrophilic film | Preliminary industrial application | Low-medium | Green, biodegradable, wide source availability | Difficult selectivity control, significant batch-to-batch variability | [ |
| Biological depressants | A.ferrooxidans, MFA | Weakly alkaline | Biofilm barrier/metabolite adsorption | Basic research stage; poor stability | High | Environmentally friendly, mild conditions | Long cycle time, difficulty in maintaining activity, high variability | [ |
| Low-alkalinity depressants | PA, L-dopa, MFA, KMnO4, etc. | Near-neutral to weakly alkaline | Specific adsorption | Industrial trial stage | Low-medium | Overcomes drawbacks of high alkalinity, green | Challenging to maintain selectivity in complex pulp | [ |
表3 黄铁矿抑制剂的核心抑制机理、工业现状和主要优势
Table 3 The core depression mechanisms, industrial status, and main advantages of pyrite depressants
| Comparative aspect | Typical representatives | pH range | Core mechanism | Industrial status | Relative cost | Main advantages | Main limitations | Ref. |
|---|---|---|---|---|---|---|---|---|
| Traditional inorganic depressants | Lime, cyanide | High alkalinity | High-alkalinity oxide film/strong complexation adsorption | Widely applied/restricted or banned | Extremely low overall | Low cost, stable performance | High-alkalinity scaling, loss of precious metals, toxicity risk (cyanide) | [ |
| Organic small-molecule depressants | SMA, PA, L-dopa | Near neutral to weakly alkaline | Functional group chemisorption | Laboratory/pilot-scale testing | Medium-high | High selectivity, molecular designability | High cost, unknown stability, limited case studies | [ |
| Polymer depressants | Dextrin, carrageenan, CMC | Wide range | Steric hindrance and hydrophilic film | Preliminary industrial application | Low-medium | Green, biodegradable, wide source availability | Difficult selectivity control, significant batch-to-batch variability | [ |
| Biological depressants | A.ferrooxidans, MFA | Weakly alkaline | Biofilm barrier/metabolite adsorption | Basic research stage; poor stability | High | Environmentally friendly, mild conditions | Long cycle time, difficulty in maintaining activity, high variability | [ |
| Low-alkalinity depressants | PA, L-dopa, MFA, KMnO4, etc. | Near-neutral to weakly alkaline | Specific adsorption | Industrial trial stage | Low-medium | Overcomes drawbacks of high alkalinity, green | Challenging to maintain selectivity in complex pulp | [ |
图10 分子在黄铁矿{100}表面作用后的模型[75](a) Mercapto acetic acid (b) 2-Mercaptoethanol (c) H2O
Fig.10 Models of molecules on {100} surface of pyrite after interaction[75]
图11 半胱氨酸吸附在黄铁矿{100}面上的优化构型[半胱氨酸的-SH (1A/1B), -NH3 (2A/2B), =O (-C=O, 3A/3B), -O (-C-OH, 4A/4B)在黄铁矿{100}的S/Fe位点上的吸附][76]
Fig.11 Optimized configurations of cysteine adsorbed on {100} surface of pyrite [adsorption of -SH (1A/1B), -NH3 (2A/2B), =O (-C=O, 3A/3B), -O (-C-OH, 4A/4B) of cysteine on the S/Fe site of pyrite {100}][76]
图12 NaH2CA在黄铁矿{100}表面吸附的(a) 电子密度分布和(b) 差分电荷密度图[77]
Fig.12 (a) Electron density distribution and (b) differential charge density map of NaH2CA adsorbed on {100} surface of pyrite[77]
| Calculation module | Calculation method | Degree of fit | Primary application focus | Advantages | Limitations | Ref. |
|---|---|---|---|---|---|---|
| Forcite | Molecular dynamics | High | Adsorption configuration optimization, interaction energy calculation | Fast computation speed, suitable for large systems | Force field dependence, incapable of handling electronic structures | [ |
| DMol³ | Density functional theory (DFT) | High | Density of states, band structure, charge analysis | Capable of processing electronic properties with high accuracy | High computational resource consumption, limited system size | [ |
| CASTEP | Plane-wave pseudopotential DFT | High | Band structure, surface adsorption | Applicable to periodic systems, high accuracy | High computational cost, complex parameterization | [ |
表4 Materials Studio主要模块在黄铁矿抑制研究中的应用
Table 4 Application of key Materials Studio modules in pyrite depression research
| Calculation module | Calculation method | Degree of fit | Primary application focus | Advantages | Limitations | Ref. |
|---|---|---|---|---|---|---|
| Forcite | Molecular dynamics | High | Adsorption configuration optimization, interaction energy calculation | Fast computation speed, suitable for large systems | Force field dependence, incapable of handling electronic structures | [ |
| DMol³ | Density functional theory (DFT) | High | Density of states, band structure, charge analysis | Capable of processing electronic properties with high accuracy | High computational resource consumption, limited system size | [ |
| CASTEP | Plane-wave pseudopotential DFT | High | Band structure, surface adsorption | Applicable to periodic systems, high accuracy | High computational cost, complex parameterization | [ |
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