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学者姓名：陈俊南
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Abstract ：
氰化物具有高毒性,在黄金选冶过程中会产生大量的含氰废水及尾渣亟待处理.随着环保政策的日益完善及人们环保意识的逐渐增强,绿色、无毒的非氰浸金药剂逐渐成为研究热点.在过去几十年中,已研发了三十余种非氰浸金药剂及方法,包括硫脲、硫代硫酸盐、硫氰酸盐、卤化法、多硫化物法和氨基酸等.由于存在种种技术障碍,当前非氰浸金药剂的开发与应用大都集中在实验室规模或中试试验规模.此外,还有部分学者聚焦于新型环保提金药剂的开发与应用.这类提金药剂在某些复杂难处理金矿工业实践中具有比氰化物更好的选择性、更快的浸出速率和安全环保等优点,但也存在药剂耗量较大、使用条件复杂、提金机理不明确,提金尾液污染环境等问题.鉴于此,本文详细介绍了各类浸金药剂的性质,系统阐述和讨论各类药剂的提金机理、发展现状及优缺点,最后总结并展望了各类提金药剂的潜在工业应用前景.
Keyword ：
氰化法 氰化法 浸出机理 浸出机理 浸金药剂 浸金药剂 湿法冶金 湿法冶金 金 金 非氰化法 非氰化法
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| GB/T 7714 | 陈俊南 , 衷水平 , 翁威 et al. 湿法提金技术进展及机理探讨 [J]. | 矿冶 , 2025 , 34 (1) : 1-11 . |
| MLA | 陈俊南 et al. "湿法提金技术进展及机理探讨" . | 矿冶 34 . 1 (2025) : 1-11 . |
| APA | 陈俊南 , 衷水平 , 翁威 , 迟晓鹏 , 谭文 , 蔡教忠 et al. 湿法提金技术进展及机理探讨 . | 矿冶 , 2025 , 34 (1) , 1-11 . |
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Abstract ：
The novel amidoxime-based collectors, 4-pyridylamidoxime (PA), 3-ethyl-4-pyridylamidoxime (EPA), and 3methyl-5-tert-butyl-4-pyridylamidoxime (MBPA), were introduced in the lead-free flotation separation of wolframite from quartz and calcite. Compared with PA, EPA, and the traditional collector benzohydroxamic acid (BHA), MBPA exhibited a better separation and recovery capacity to wolframite ore. 4.0 x 10(-4) mol/L MBPA recovered more than 80 % wolframite, similar to 24 % calcite, and similar to 26 % quartz at pH 8.0 without Pb2+ ions. Under the same conditions, BHA only floated out less than 35 % wolframite. The adsorption amount results exhibited a stronger adsorption ability of MBPA than BHA on wolframite surface. Further, the results of zeta-potential, FTIR, XPS and density functional theory (DFT) calculation revealed that MBPA could chemisorb on wolframite surface to form -N-Fe and -O-Fe bonds. MBPA had stronger electron-donating ability and weaker electron-accepting ability than BHA, which exhibited higher reaction activity. It was clear that MBPA was an excellent collector in the lead-free flotation separation of wolframite from calcite and quartz.
Keyword ：
Calcite Calcite Chelation Chelation Lead-free flotation Lead-free flotation Quartz Quartz Selectivity Selectivity Wolframite Wolframite
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| GB/T 7714 | Zeng, Guangsheng , Weng, Wei , Zhong, Shuiping et al. Amidoxime collectors: Lead-free flotation performance and adsorption mechanism in the separation of wolframite, quartz and calcite [J]. | MINERALS ENGINEERING , 2025 , 222 . |
| MLA | Zeng, Guangsheng et al. "Amidoxime collectors: Lead-free flotation performance and adsorption mechanism in the separation of wolframite, quartz and calcite" . | MINERALS ENGINEERING 222 (2025) . |
| APA | Zeng, Guangsheng , Weng, Wei , Zhong, Shuiping , Chi, Xiaopeng , Cai, Jiaozhong , Tan, Wen et al. Amidoxime collectors: Lead-free flotation performance and adsorption mechanism in the separation of wolframite, quartz and calcite . | MINERALS ENGINEERING , 2025 , 222 . |
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Talc is a layered silicate mineral with pronounced crystal anisotropy, consisting of a basal (001) surface and an edge (100) surface, which complicates its separation from valuable minerals. In this study, tannic acid (TA) was used as a depressant, and its adsorption behaviors on the two representative surfaces of talc-silica (basal plane surface) and magnesium silicate (edge surface)-were systematically investigated using experimental methods and molecular simulations. TA addition reduced the contact angles of the talc basal and edge surfaces by 30.5 degrees and 22.7 degrees, respectively, indicating enhanced hydrophilicity. ToF-SIMS analysis revealed that TA physically adsorbs onto the silica surface, while both physical and chemical interactions occur on the magnesium silicate surface. AFM showed lumpy adsorbate on the silica surface and point-like adsorbate on the magnesium silicate surface, with a greater roughness change observed for the former. QCM-D measurements confirmed that TA formed a multilayer flexible adsorbate on the silica surface and a dense, rigid monolayer on the magnesium silicate surface. Molecular dynamics simulations further revealed that van der Waals interactions dominated TA adsorption on the (001) surface, while electrostatic interactions prevailed on the (100) surface. These findings provide insight into the selective depression mechanism of talc and offer guidance for the depression of other layered silicate minerals.
Keyword ：
Adsorption behavior Adsorption behavior Basal plane surface Basal plane surface Edge surface Edge surface Talc Talc Tannic acid Tannic acid
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| GB/T 7714 | Cai, Jiaozhong , Zhong, Shuiping , Deng, Jiushuai et al. Study on the adsorption behavior and adsorption mechanism of green depressant TA on the basal plane and edge surface of talc [J]. | MINERALS ENGINEERING , 2025 , 232 . |
| MLA | Cai, Jiaozhong et al. "Study on the adsorption behavior and adsorption mechanism of green depressant TA on the basal plane and edge surface of talc" . | MINERALS ENGINEERING 232 (2025) . |
| APA | Cai, Jiaozhong , Zhong, Shuiping , Deng, Jiushuai , Wu, Bozeng , Xu, Chengyan , Chi, Xiaopeng et al. Study on the adsorption behavior and adsorption mechanism of green depressant TA on the basal plane and edge surface of talc . | MINERALS ENGINEERING , 2025 , 232 . |
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采用电沉积法制备高纯度镍粉,用Zeta电位仪、电感耦合等离子体发射光谱仪、扫描电子显微镜和X射线衍射分析等手段分别表征产物镍粉的粒度、化学成分、微观形貌和微观晶体结构.系统探究了工艺参数电流密度、镍离子质量浓度、电解液pH值、NH4C1质量浓度、电解温度和取粉时间等因素对电积镍粉粒度、电流效率以及镍粉微观形貌的影响.结果表明,工艺参数电流密度、镍离子质量浓度、电解液pH值、NH4Cl质量浓度、电解温度和取粉时间均对电积镍粉的粒度分布和形貌等有显著影响;电极板间距为30 mm时的最佳工艺参数条件为:电流密度为3 000 A/m2、电积液Ni2+质量浓度为5 g/L、pH值为5、温度40 ℃、添加剂NH4C1质量浓度为10g/L、取粉时间间隔为120 s,在此试验条件下所得镍粉粒度分布均匀,颗粒微观形貌为树枝状,镍粉纯度可达到99.87％;模拟工业生产电解液成分人工配制的含杂质离子Fe3+、Cu2+的硫酸镍溶液为电解液进行电积试验,可得到镍粉纯度为99.84％、粒度分布均匀、微观形貌呈树枝状的高纯镍粉.研究结果可为工业电积镍制备高纯镍粉提供参考.
Keyword ：
树枝状 树枝状 电流效率 电流效率 电积 电积 粒度分布 粒度分布 镍 镍 高纯镍粉 高纯镍粉
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| GB/T 7714 | 迟晓鹏 , 黄绍怡 , 陈江濠 et al. 电沉积法制备高纯镍粉 [J]. | 矿冶 , 2024 , 33 (5) : 694-704 . |
| MLA | 迟晓鹏 et al. "电沉积法制备高纯镍粉" . | 矿冶 33 . 5 (2024) : 694-704 . |
| APA | 迟晓鹏 , 黄绍怡 , 陈江濠 , 翁威 , 陈俊南 , 谭文 et al. 电沉积法制备高纯镍粉 . | 矿冶 , 2024 , 33 (5) , 694-704 . |
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锰电解过程在(NH4)2SO4-MnSO4体系进行时,需维持电解液pH值稳定在7.0～7.2.但阳极析氧反应使得长期电解条件下电解液pH值不断下降.生产上均使用氨水调节电解液pH值.但氨水易挥发,导致整个生产车间氨气味道刺鼻,影响身体健康.此外,持续加入氨水造成电解液中的氨不断累积膨胀,最终产生大量氨氮废水和氨氮锰渣.鉴于乙二胺与氨水的化学性质相似性,且具备更强的碱性及更低的挥发性,探索以乙二胺取代氨水作为pH值调节剂,以减少氨源的使用量、改善作业环境,探究乙二胺新体系电解锰的可行性.
Keyword ：
pH值调节剂 pH值调节剂 乙二胺 乙二胺 电流效率 电流效率 电解锰 电解锰 直流电耗 直流电耗
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| GB/T 7714 | 衷水平 , 常青瑶 , 陈俊南 et al. 乙二胺作为电解锰新型pH调节剂 [J]. | 矿冶 , 2024 , 33 (5) : 654-661,669 . |
| MLA | 衷水平 et al. "乙二胺作为电解锰新型pH调节剂" . | 矿冶 33 . 5 (2024) : 654-661,669 . |
| APA | 衷水平 , 常青瑶 , 陈俊南 , 张瑞莹 , 郭昊 , 何守兴 et al. 乙二胺作为电解锰新型pH调节剂 . | 矿冶 , 2024 , 33 (5) , 654-661,669 . |
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