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学者姓名：迟晓鹏
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Abstract ：
Electrolytic manganese is an important metal material that is widely employed in batteries, electronics, steel, and other fields. However, there are many issues regarding the production process of electrolytic manganese, such as low current efficiency, high-content toxic SeO2 additives in the electrolyte, and difficulty in controlling the product morphology. These issues not only impact the production efficiency and quality of electrolytic manganese but also result in severe environmental pollution. To address these issues, a MnSO4-(NH4)2SO4 electrolyte system was prepared based on the electrolytic manganese industry standard. The effects of polyacrylic acid, glycine, ethylenediaminetetraacetic acid (EDTA), and gluconic acid were explored as auxiliary additives under neutral electrolysis conditions to lower the SeO2 content, which is a highly toxic main additive. The effects of the different additives on the metal manganese morphology, crystal structure, and cathodic electrochemical polarization behavior were examined by field-emission scanning electron microscopy, X-ray diffraction, and constant current cathodic polarization curve tests. The findings reveal that the main orientation of the metal manganese crystal form deposited by the four auxiliary additives is the (330) crystal plane, and all of them can promote the formation of α-Mn, enhance the electrolysis efficiency, and lower the energy consumption. In particular, the optimized amount of polyacrylic acid of 0.08 g·L−1 contributes to an energy consumption of 5735.34 kW·h·t−1. Correspondingly, the addition of 10 g·L−1 glycine is the most favorable amount, leading to an energy consumption of 5518.56 kW·h·t−1. For EDTA, the lowest energy consumption of 5168.26 kW·h·t−1 is measured at an added amount of 0.5 g·L−1. Note that among the four investigated candidates, gluconic acid is the most favorable auxiliary additive, contributing to the increased cathode current density and reduced cathodic polarization as well as denser metal manganese products. Moreover, gluconic acid addition can lower the concentration of toxic SeO2 from 0.03-0.06 to 0.015 g·L−1, significantly increase the cathode current density, reduce the cathodic polarization, and result in a more dense and smooth product morphology, with the current efficiency being increased from approximately 70% to 89.73% and energy consumption being reduced from 6500 to 4990.58 kW·h·t−1 at the same time. Gluconic acid, as the auxiliary additive, not only contributes to the best electrolysis indexes for electrolytic manganese but also facilitates the formation of metal manganese with the most desirable crystal structure. This work offers novel insights into the environmentally friendly production and cheap electrodeposition of metal manganese for the electrolytic manganese industry. © 2024 Science Press. All rights reserved.
Keyword ：
Additives Additives Amino acids Amino acids Cathodic polarization Cathodic polarization Crystal orientation Crystal orientation Current density Current density Electrolysis Electrolysis Electrolytes Electrolytes Energy efficiency Energy efficiency Energy utilization Energy utilization Ethylenediaminetetraacetic acid Ethylenediaminetetraacetic acid Field emission cathodes Field emission cathodes Field emission microscopes Field emission microscopes Manganese Manganese Manganese compounds Manganese compounds Morphology Morphology Nitrogen compounds Nitrogen compounds Scanning electron microscopy Scanning electron microscopy Selenium compounds Selenium compounds
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| GB/T 7714 | Chi, Xiaopeng , Zhang, Ruiying , Weng, Wei et al. Effect of organic additives on manganese electrolysis [J]. | Chinese Journal of Engineering , 2024 , 46 (5) : 835-843 . |
| MLA | Chi, Xiaopeng et al. "Effect of organic additives on manganese electrolysis" . | Chinese Journal of Engineering 46 . 5 (2024) : 835-843 . |
| APA | Chi, Xiaopeng , Zhang, Ruiying , Weng, Wei , Su, Guohui , Tan, Wen , Zhong, Shuiping . Effect of organic additives on manganese electrolysis . | Chinese Journal of Engineering , 2024 , 46 (5) , 835-843 . |
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电解锰行业面临电效低、SeO_2添加剂剧毒且沉积产物形貌难控制等问题.为了提高电流效率以降低能耗、改善锰电沉积形貌及降低添加剂SeO_2的使用量，本文根据电解锰行业标准，配制MnSO_4–(NH_4)_2SO_4电解液体系，通过添加聚丙烯酸、甘氨酸、乙二胺四乙酸(EDTA)、葡萄糖酸等分别作辅助添加剂，探究其对锰沉积的影响以降低剧毒性主添加剂SeO_2的用量.采用场发射扫描电子显微镜(SEM)、X射线衍射分析(XRD)、恒电流阴极极化曲线测试方法 (LSV)等表征手段，研究金属锰沉积形貌、晶体结构、阴极电化学极化行为与添加剂之间的关系.结果表明：四种添加剂均可以促进α-Mn的形成，且最优晶型取向为(330)晶面，其中葡萄糖酸最适宜作为辅助添加剂.当以葡萄糖酸为辅助添加剂，质量浓度为1.84 g·L~(-1)时，阴极电流密度明显提高，降低了阴极极化，产品形貌更加致密光滑.最优条件下，SeO_2的质量浓度可由工业上常规用量0.03～0.06 g?L~(-1)降低至0.015 g?L~(-1)，电流效率可由70%提高至89.73%，能耗由6500 kW·h·t~(-1)降至4990.58 kW·h·t~(-1).研究结果有望为电解锰行业绿色生产和高效电沉积提供借鉴，有助于推动电解锰行业的可持续发展.
Keyword ：
有机物 有机物 极化行为 极化行为 添加剂 添加剂 电流效率 电流效率 电解锰 电解锰
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| GB/T 7714 | 迟晓鹏 , 张瑞莹 , 翁威 et al. 有机添加剂对电解锰的影响 [J]. | 工程科学学报 , 2024 , 46 (05) : 835-843 . |
| MLA | 迟晓鹏 et al. "有机添加剂对电解锰的影响" . | 工程科学学报 46 . 05 (2024) : 835-843 . |
| APA | 迟晓鹏 , 张瑞莹 , 翁威 , 苏国晖 , 谭文 , 衷水平 . 有机添加剂对电解锰的影响 . | 工程科学学报 , 2024 , 46 (05) , 835-843 . |
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High-efficiency reduction of Fe3O4 particles in molten copper slag is the key for recovering slag-entrained copper, although restrained by the sluggish reaction kinetics of commercial powdery reductants with low density. Here, a new strategy by density tuning in conjunction with pelletizing of the powdery reductants is suggested, greatly enhancing the Fe3O4 reduction kinetics and resulting in remarkably facilitating the recovery of slag-entrained copper. Specifically, by replacing the industrially used coal powder with FeS2-C pellets at optimized density, the efficiency of Fe3O4 reduction is significantly increased from 18% to 51%, with the copper content in the low-layer slag being correspondingly enriched from 1.37% to 4.53%. The SEM-EDS characterizations and finite element analytical results all reveal that the enhanced reduction of Fe3O4 by the as-designed reductant contributes to the decrease of slag viscosity and copper exposure, as well as to the size growth of copper matte droplets, resulting in promoted settling of copper-containing components for copper–slag separation in the molten state. Additionally, the full exposure and size growth of copper matte in the molten state facilitate copper reclamation during the subsequent grinding–flotation process of the solidified slag, which increases the copper recovery from 23.3% to 85.3%, with the concentrate grade being correspondingly improved from 2.8% to 6.45% after one-stage flotation. The results can provide new insights into enhancing the recovery of slag-entrained copper. © The Minerals, Metals & Materials Society 2024.
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| GB/T 7714 | Xia, J. , Liu, H. , Chen, H. et al. Density Tuning in Conjunction with Pelletizing of Reductants for Enhanced Recovery from Copper Smelting Slag [J]. | JOM , 2024 , 76 (9) : 4837-4848 . |
| MLA | Xia, J. et al. "Density Tuning in Conjunction with Pelletizing of Reductants for Enhanced Recovery from Copper Smelting Slag" . | JOM 76 . 9 (2024) : 4837-4848 . |
| APA | Xia, J. , Liu, H. , Chen, H. , Chi, X. , Weng, W. , Zhong, S. . Density Tuning in Conjunction with Pelletizing of Reductants for Enhanced Recovery from Copper Smelting Slag . | JOM , 2024 , 76 (9) , 4837-4848 . |
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铜是现代工业不可或缺的原材料,然而我国铜资源对外依存度高,是典型的“卡脖子”资源。铜主要通过火法冶炼铜精矿制得,冶炼过程渣量大、渣含铜量高达0.5%～5%,远高于我国铜矿的可采品位(0.2%)。因此,研究铜渣贫化回收铜的工艺对提升我国资源保障能力具有重要意义。基于铜/铜锍在渣中的赋存状态、铜损的主要形式,重点综述了现阶段铜渣贫化回收铜的工艺技术,包括火法贫化法、浮选法、湿法处理等,并对未来的研究重点进行了展望。目前,电炉贫化处理量大,技术成熟,但其通常使用煤炭等作为还原剂,由于其密度小于铜渣,反应时大多漂浮渣层表面并燃烧,反应不充分,也不利于大气环保。另外,工业上常使用金属铁棒还原炉底结瘤的磁铁矿,但其密度大于铜/铜锍,在渣液中沉降速度快,对渣层的还原不彻底。因此,开发环保、高效的还原剂逐渐成为火法电炉贫化研究的重点。浮选法是处理天然铜矿的常用手段,但铜渣存在硬度高、伴生关系复杂、粒度分布不均、微细粒多等浮选难点,同时铜渣高温浮选导致捕收剂失活的问题也亟待解决。在处理低品位铜渣时,湿法浸出是常用手段,但化学试剂和废液环保问题难以解决;生物浸出具有性质稳定、对环境无污染,且浸出后金属含量较低等优点,但其浸出周期长、效率低。根据目前贫化工艺的难点,对未来贫化工艺开发与优化进行了展望,如增加外场聚集四氧化三铁以改善铜/铜锍沉降环境、开发环保高效的火法贫化还原剂、探究还原剂对不同铜渣渣型的作用机制以及开发耐高温的铜渣浮选新药剂等。
Keyword ：
冰铜 冰铜 渣含铜 渣含铜 还原剂 还原剂 还原贫化 还原贫化 铜渣 铜渣
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| GB/T 7714 | 迟晓鹏 , 刘浩宇 , 夏俊 et al. 铜渣贫化回收铜的研究现状及展望 [J]. | 金属矿山 , 2024 , 11 (01) : 293-303 . |
| MLA | 迟晓鹏 et al. "铜渣贫化回收铜的研究现状及展望" . | 金属矿山 11 . 01 (2024) : 293-303 . |
| APA | 迟晓鹏 , 刘浩宇 , 夏俊 , 翁威 , 衷水平 . 铜渣贫化回收铜的研究现状及展望 . | 金属矿山 , 2024 , 11 (01) , 293-303 . |
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锂云母酸法浸出液含有大量杂质金属，使用传统化学沉淀法会引起大量产物损失。为了降低浸出液除杂过程中的产物损失，使用溶剂萃取法进行萃取除杂工艺研究。通过对不同萃取剂组合萃取除杂效果的研究，确定使用P204作为萃取剂。考察了萃取过程中不同因素的影响，并使用H_2O_2预氧化水相里的Fe~(2+),强化萃取效果。结果表明：在有机相组成为30%P204+70%磺化煤油、料液初始pH为2.4、相比O/A=1、萃取时间10min和振荡频率300 r/min的单级萃取最佳条件下，铁除杂率为99.89%、铝除杂率为31.23%、锂和铷的萃取率分别为7.63%和14.85%。相比于化学沉淀法，锂和铷的回收率得到了30%左右的提高。
Keyword ：
P204 P204 化学沉淀法 化学沉淀法 溶剂萃取法 溶剂萃取法 硫酸浸出 硫酸浸出 锂云母 锂云母
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| GB/T 7714 | 梁东辉 , 谭文 , 翁威 et al. 锂云母酸浸液萃取除杂 [J]. | 有色金属(冶炼部分) , 2024 , (07) : 76-84 . |
| MLA | 梁东辉 et al. "锂云母酸浸液萃取除杂" . | 有色金属(冶炼部分) 07 (2024) : 76-84 . |
| APA | 梁东辉 , 谭文 , 翁威 , 迟晓鹏 , 衷水平 . 锂云母酸浸液萃取除杂 . | 有色金属(冶炼部分) , 2024 , (07) , 76-84 . |
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The precipitation of Fe3O4 particles and the accompanied formation of Fe3O4-wrapped copper structure are the main obstacles to copper recovery from the molten slag during the pyrometallurgical smelting of copper concentrates. Herein, the commercial powdery pyrite or anthracite is replaced with pyrite–anthracite pellets as the reductants to remove a large amount of Fe3O4 particles in the molten slag, resulting in a deep fracture in the Fe3O4-wrapped copper microstructure and the full exposure of the copper matte cores. When 1wt% composite pellet is used as the reductant, the copper matte droplets are enlarged greatly from 25 µm to a size observable by the naked eye, with the copper content being enriched remarkably from 1.2wt% to 4.5wt%. Density functional theory calculation results imply that the formation of the Fe3O4-wrapped copper structure is due to the preferential adhesion of Cu2S on the Fe3O4 particles. X-ray photoelectron spectroscopy, Fourier transform infrared spectrometer (FTIR), and Raman spectroscopy results all reveal that the high-efficiency conversion of Fe3O4 to FeO can decrease the volume fraction of the solid phase and promote the depolymerization of silicate network structure. As a consequence, the settling of copper matte droplets is enhanced due to the lowered slag viscosity, contributing to the high efficiency of copper–slag separation for copper recovery. The results provide new insights into the enhanced in-situ enrichment of copper from molten slag. © University of Science and Technology Beijing 2024.
Keyword ：
copper matte copper matte pyrometallurgical smelting process pyrometallurgical smelting process reductants reductants slag cleaning slag cleaning
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| GB/T 7714 | Chi, X. , Liu, H. , Xia, J. et al. Breaking the Fe3O4-wrapped copper microstructure to enhance copper–slag separation [J]. | International Journal of Minerals, Metallurgy and Materials , 2024 , 31 (10) : 2312-2325 . |
| MLA | Chi, X. et al. "Breaking the Fe3O4-wrapped copper microstructure to enhance copper–slag separation" . | International Journal of Minerals, Metallurgy and Materials 31 . 10 (2024) : 2312-2325 . |
| APA | Chi, X. , Liu, H. , Xia, J. , Chen, H. , Yu, X. , Weng, W. et al. Breaking the Fe3O4-wrapped copper microstructure to enhance copper–slag separation . | International Journal of Minerals, Metallurgy and Materials , 2024 , 31 (10) , 2312-2325 . |
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Surface engineering of both morphology and composition is appealing strategy for further boosting the hydrogen evolution reaction (HER) performances of commercial bulk nickel electrode in alkaline media. However, modified surface structure with long-term stability is still in desperate need, especially at industrial-scale current density. Herein, by grafting the commercial nickel electrode with well-aligned nickel-rhenium (Ni–Re) alloy particles, the electrode surface turns to be highly hydrophilic, thus propelling the detachment of hydrogen (H2) bubbles from the electrode surface. In addition, the synergy within the dual Ni–Re atom optimizes the electronic structure of electrode surface, lowering the energy barriers for water dissociation. Resultantly, the NiRe-modified nickel bulk electrode shows fascinating HER performance in both activity and long-term stability, namely overpotential of 191 mV@100 mA cm−2, stable operation for 2000 h at 200 mA cm−2 in H-type cell, and steady running for >1000 h at 1000 mA cm−2 using the configuration of Ni||Ni-60 %Re in the membrane electrode assembly, outperforming that of the benchmark Pt/C catalysts. The results can provide new insights for the tradeoff between activity and cost towards high-performance alkaline water electrolysis. © 2024 Elsevier B.V.
Keyword ：
Benchmarking Benchmarking Electrodes Electrodes Electronic structure Electronic structure Grafting (chemical) Grafting (chemical) Hydrogen Hydrogen Morphology Morphology Nickel Nickel Surface reactions Surface reactions Surface structure Surface structure
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| GB/T 7714 | Weng, Wei , Zhang, Wenze , Lei, Tianhan et al. Grafting nickel electrode with self-supporting semispherical NiRe particles for stably large-current alkaline hydrogen evolution reaction [J]. | Journal of Power Sources , 2024 , 614 . |
| MLA | Weng, Wei et al. "Grafting nickel electrode with self-supporting semispherical NiRe particles for stably large-current alkaline hydrogen evolution reaction" . | Journal of Power Sources 614 (2024) . |
| APA | Weng, Wei , Zhang, Wenze , Lei, Tianhan , Tan, Wen , Chi, Xiaopeng , Zhong, Shuiping . Grafting nickel electrode with self-supporting semispherical NiRe particles for stably large-current alkaline hydrogen evolution reaction . | Journal of Power Sources , 2024 , 614 . |
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高砷难处理金矿是目前重要的黄金来源之一，也是传统浮选法和浸出法面临的巨大挑战。印尼某金矿石含金14.6 g/t、含砷1.82%,该矿石为典型的高砷微细粒型难处理金矿石，自然金多分布于毒砂和闪锌矿间隙，少量包裹于脉石矿物中。该矿石的分选难点在于原矿中毒砂含量高、自然金裸露程度低、粒级以细粒和微粒为主，分选的重点在于降低砷含量、分离自然金和硫化矿。由于毒砂中存在着高含量的砷，会对选别造成不利影响，采用传统浮选工艺或全泥氰化工艺选别该矿石回收率较低，还会导致大量的砷富集于金精矿中，影响后续的冶炼过程。本试验重点研究了浮选—浮选尾矿氰化浸出工艺和氧化预处理—氰化浸出工艺，在浮选—浮选尾矿氰化浸出工艺中，为了增加细菌氧化的效率，先通过浮选对原矿进行富集得到金精矿，再进行细菌氧化处理，该方法在一定程度上降低了砷含量，使金精矿中的砷由5.98%降低至1.68%;在氧化预处理—氰化浸出工艺中，采用过硫酸钾(K_2S_2O_8)作为氧化剂来处理原矿，结果表明，过硫酸钾对于氧化分解矿石中的黄铁矿和毒砂有较好的效果，砷含量由1.82%降低至1.05%。综合考虑，最终确定过硫酸钾氧化预处理—氰化浸出工艺的效果更好，金的浸出率可达88.49%,金的总回收率为87.97%,尾矿中金含量降至1.01 g/t,实现了矿石中金的高效回收。研究结果可为此类难处理金矿的综合利用和回收提供参考和借鉴。
Keyword ：
氧化预处理 氧化预处理 氰化浸出 氰化浸出 细菌氧化 细菌氧化 高砷金矿 高砷金矿
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| GB/T 7714 | 邓哲元 , 李恩霖 , 施旭楷 et al. 印尼某金矿选矿试验研究 [J]. | 有色金属(选矿部分) , 2024 , (08) : 77-85 . |
| MLA | 邓哲元 et al. "印尼某金矿选矿试验研究" . | 有色金属(选矿部分) 08 (2024) : 77-85 . |
| APA | 邓哲元 , 李恩霖 , 施旭楷 , 丁辉 , 迟晓鹏 , 衷水平 . 印尼某金矿选矿试验研究 . | 有色金属(选矿部分) , 2024 , (08) , 77-85 . |
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无氰亚硫酸盐电沉积金体系面临电流效率低、镀液稳定性差、循环周期短、镀层性能难以满足工业发展需求等问题。为了提高电流效率、镀液稳定性和镀层表面光泽度，改善电沉积金形貌及提高镀层性能，配制了亚硫酸金钠电镀液体系，通过添加不同质量浓度乙二胺（EDA）作为辅助添加剂，研究了EDA对镀液稳定性、电沉积产物表面形貌、元素组成和晶体晶面取向，以及金镀层光泽度、硬度和粗糙度的影响。采用电化学测试进一步研究EDA对溶液中Au~+行为的影响。结果表明：EDA使吸附Au~+的活性位点增加了2.8倍，同时增加了阴极表面的极化并促进晶粒细化，增强了Au(111）晶面的峰强度。EDA质量浓度为15 g/L时，电镀液能保存6个月以上，电流效率从54%提高到98%，金镀层表面均匀性、光泽度和硬度明显提高，镀层表面粗糙度、腐蚀速率明显降低，镀层综合性能最优。本研究有望为亚硫酸盐电镀体系开发新型高效添加剂提供借鉴，有助于推动电镀金行业的可持续发展。
Keyword ：
乙二胺 乙二胺 亚硫酸盐 亚硫酸盐 无氰电沉积金 无氰电沉积金 电化学 电化学 硬度 硬度 耐腐蚀性 耐腐蚀性
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| GB/T 7714 | 衷水平 , 徐婷钰 , 陈江濠 et al. 乙二胺添加剂对无氰亚硫酸盐体系电沉积金的影响 [J]. | 铜业工程 , 2024 , PageCount-页数: 11 (04) : 44-54 . |
| MLA | 衷水平 et al. "乙二胺添加剂对无氰亚硫酸盐体系电沉积金的影响" . | 铜业工程 PageCount-页数: 11 . 04 (2024) : 44-54 . |
| APA | 衷水平 , 徐婷钰 , 陈江濠 , 迟晓鹏 , 谭文 , 翁威 et al. 乙二胺添加剂对无氰亚硫酸盐体系电沉积金的影响 . | 铜业工程 , 2024 , PageCount-页数: 11 (04) , 44-54 . |
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Lithium and its associated rubidium are regarded as the strategic metal resource, which have a wide use in many commercial products. Nowadays, the continuing growth in demand for Li resources, propelling the object of industrial exploitation will focus on low-grade, complex minerals composition and unwieldy ores. Zinnwaldite has received increasing attention as a potential lithium-containing resource in recent years. However, there are a lack of effective extraction processes for zinnwaldite. Hence, this paper proposes an effective method to extract metal cleanly and efficiently from zinnwaldite by using CaO and B2O3 2 O 3 as thermal activation additives and H2SO4 2 SO 4 as the leaching agent. The results showed that the destruction of Fe-O and Si-O-Si bonds led to increased extraction efficiency. The breathing vibrations of oxygen atoms symmetric in 4- and 3-membered rings and Si-O symmetric stretch could influence the Li separation from silica skeleton. Ultimately, the 91.32 % Li, 93.09% Rb, 81.14 % Fe, 95.00 % Al and 71.12 % K were recovered under the optimal conditions. Meanwhile, about 10 % F escaped into the air during thermal activation and the concentration of F in the leaching solution was lower than 2 mg/L. The use of B2O3 2 O 3 provides a valuable reference for the efficient and clean treatment of lepidolite using the salt roasting method.
Keyword ：
Acid leaching Acid leaching Boron oxide Boron oxide Calcium oxide Calcium oxide Thermal activation Thermal activation Zinnwaldite Zinnwaldite
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| GB/T 7714 | Zhong, Shuiping , Liang, Donghui , Weng, Wei et al. Efficient extraction of Li and Rb from zinnwaldite via thermal activation and acid leaching [J]. | MINERALS ENGINEERING , 2024 , 216 . |
| MLA | Zhong, Shuiping et al. "Efficient extraction of Li and Rb from zinnwaldite via thermal activation and acid leaching" . | MINERALS ENGINEERING 216 (2024) . |
| APA | Zhong, Shuiping , Liang, Donghui , Weng, Wei , Chi, Xiaopeng , Zhang, Wengze , Tan, Wen . Efficient extraction of Li and Rb from zinnwaldite via thermal activation and acid leaching . | MINERALS ENGINEERING , 2024 , 216 . |
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