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学者姓名：蒋开喜
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This paper presents a treatment process for copper smelter dust's chlorinated leaching solution. Addressing the challenge of separating As and valuable metals from this solution, the process utilized SO2 to reduce As(V) to As(III) and NaOH to neutralize Bi(III), resulting in the stepwise formation of As2O3 and BiOCl. The results indicate that, under optimal conditions, the precipitation ratio of As reached 71.23%, and the Bi precipitation ratio reached 98.38%. Following Bi precipitation, two separation strategies were attempted for the recovery of Cu and Zn. The first strategy involves recovery of Cu using a sulfide precipitation method, followed by the recrystallization of ZnSO4. Under optimal conditions, the Cu precipitation ratio can reach 99.81%. The second strategy involves Cu solvent extraction using Lix984N coupled with Zn solvent extraction using P204. Under appropriate conditions, the Cu extraction rate can achieve 98.59%. A comprehensive assessment indicates that using sulfidation - crystallization to separate Cu and Zn is more economical than employing solvent extraction methods. Consequently, the final process is determined as follows: As removal by SO2 reduction > Bi recovery by NaOH neutralization > Cu recovery by sulfidation precipitation > Zn recovery by crystallization.
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| GB/T 7714 | Guo, Zhuzhu , Gao, Chunhui , Wu, Siyuan et al. Removal of As in Copper Smelter Dust's Chlorinated Leaching Solution by SO2 Reduction and the Subsequent Separation of Bi/Cu/Zn [J]. | JOM , 2025 , 77 (5) : 3409-3417 . |
| MLA | Guo, Zhuzhu et al. "Removal of As in Copper Smelter Dust's Chlorinated Leaching Solution by SO2 Reduction and the Subsequent Separation of Bi/Cu/Zn" . | JOM 77 . 5 (2025) : 3409-3417 . |
| APA | Guo, Zhuzhu , Gao, Chunhui , Wu, Siyuan , Guo, Bao , Deng, Rongdong , Jiang, Kaixi . Removal of As in Copper Smelter Dust's Chlorinated Leaching Solution by SO2 Reduction and the Subsequent Separation of Bi/Cu/Zn . | JOM , 2025 , 77 (5) , 3409-3417 . |
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Magnetic separation is a primary method for processing iron ore and plays a crucial role in both current beneficiation practices and other fields. Extensive research has been conducted on the motion behavior of magnetic particles within magnetic separation equipment. However, force analysis, particularly the calculation of magnetic forces, remains imprecise when dealing with irregularly shaped particles. Accurate prediction of magnetic particle behavior requires precise magnetic force calculations. This study introduces micromagnetic simulations to accurately compute the magnetic forces on irregular magnetic particles. Micromagnetic simulations can determine the precise magnetic moments and magnetic induction intensities within each microelement of the particle. The results of these simulations will be validated using magnetic force microscopy (MFM). The findings indicate that traditional magnetic force calculations deviate from the precise calculations presented in this study. For irregular particles, the computational errors in repulsive and attractive forces are 770% and 576% higher, respectively, compared to spherical particles. This underscores the necessity of considering particle shape in realistic magnetic force calculations. Additionally, both the MFM measurement images and the simulated magnetic force maps exhibit bright and dark regions correlated with particle shape, demonstrating that micromagnetic simulation results can be verified through MFM measurements. This paper proposes an experimentally verifiable method for accurately calculating the magnetic forces on magnetic particles using micromagnetic simulations, which holds significant implications for designing more efficient and precise magnetic separation equipment. © 2024
Keyword ：
Iron research Iron research Magnetic bubbles Magnetic bubbles Magnetic levitation Magnetic levitation Magnetic separation Magnetic separation Magnetic separators Magnetic separators Magnetite Magnetite
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| GB/T 7714 | Li, Xin , Wang, Zhaolian , Wang, Qian et al. Accurate calculation of magnetic forces on magnetic mineral particles using micromagnetic simulations [J]. | Minerals Engineering , 2024 , 218 . |
| MLA | Li, Xin et al. "Accurate calculation of magnetic forces on magnetic mineral particles using micromagnetic simulations" . | Minerals Engineering 218 (2024) . |
| APA | Li, Xin , Wang, Zhaolian , Wang, Qian , Jiang, Kaixi , Ku, Jiangang . Accurate calculation of magnetic forces on magnetic mineral particles using micromagnetic simulations . | Minerals Engineering , 2024 , 218 . |
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In this study, the occurrence state and distribution characteristics of gallium (Ga) in zinc refinery residue were investigated by dilute acid pre-washing to enrich Ga in zinc refinery residue, followed by silane coupling agent pretreatment and epoxy resin curing, and then analyzed using scanning electron microscopy, focused ion beam micro-slicing technique and transmission electron microscopy. The acid washing increased the mass ratio of Ga from 0.92% to 2.12%. Energy-dispersive spectroscopy and select area electron diffraction revealed that Ga occurred as tiny ring-like particles of gallobeudantite (a Pb-jarosite) that intimately envelop the previously formed K-jarosite fine-grained inclusions. Density functional theory calculations showed that the interplanar spacings of the new phase formed after Ga substitution for Fe in Pb-jarosite (3.413 Å and 5.505 Å) were in good agreement with the actual measured values, further confirming that Ga substitution for Fe in Pb-jarosite was achieved. The kinetical model explains the formation of multiple phases during precipitation in the treatment of zinc leaching solution. Compared to existing studies, this work reveals the spatial distribution of gallium with higher resolution and jointly determines the gallium-containing phases through experimental analysis and simulation calculations. This microanalytical method enhances the understanding of Ga species formation during zinc refining, aiding in their distribution control and process optimization. Graphical abstract: (Figure presented.) © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
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| GB/T 7714 | Dong, W. , Qiu, X. , Zhao, W. et al. Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue [J]. | Journal of Materials Science , 2024 , 59 (31) : 14606-14620 . |
| MLA | Dong, W. et al. "Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue" . | Journal of Materials Science 59 . 31 (2024) : 14606-14620 . |
| APA | Dong, W. , Qiu, X. , Zhao, W. , Guo, B. , Jiang, K. , Chiou, M.-F. et al. Microanalytical investigations of gallium occurrence and distribution in zinc refinery residue . | Journal of Materials Science , 2024 , 59 (31) , 14606-14620 . |
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In this study, three separate flotation systems were studied to define the residual collectors found in different recycled water for sulfide (xanthate-chalcopyrite), non-sulfide with anionic (NaOL-dolomite) and cationic (DTAB-quartz) collector processes. The adsorption/desorption of collectors and the adsorption morphology were studied by the zeta potential and atomic force microscopy (AFM) measurements, the adsorption energy and configurations were simulated by the density functional theory-based first principal calculations. It was found that butyl xanthate (BX) was adsorbed on chalcopyrite surface with pronounced protrusions by chemisorption, and the residual BX in slurry was 5.79 %. While sodium oleate (NaOL) formed scattered protrusions on dolomite surface by weak adsorption, the residual NaOL in slurry was 30.74 % that reacted with the Ca2+ or Mg2+ cations. The dodecyl trimethyl ammonium bromide (DTAB) adsorbed on quartz surface through hydrophobic aggregations and the residual DTAB in slurry was 16.57 %. This work might provide a guidance for understanding reagent consumption and flotation performance in typical mineral flotation systems. © 2024 Elsevier Ltd
Keyword ：
Adsorption Adsorption Flotation Flotation Reagent consumption Reagent consumption Residual collector Residual collector
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| GB/T 7714 | Huang, W. , Liu, W. , Zheng, Y. et al. Quantitative evaluation of the difference in residual collectors in sulfide and non-sulfide flotation processes [J]. | Minerals Engineering , 2024 , 217 . |
| MLA | Huang, W. et al. "Quantitative evaluation of the difference in residual collectors in sulfide and non-sulfide flotation processes" . | Minerals Engineering 217 (2024) . |
| APA | Huang, W. , Liu, W. , Zheng, Y. , Rao, F. , Yang, L. , Jiang, K. . Quantitative evaluation of the difference in residual collectors in sulfide and non-sulfide flotation processes . | Minerals Engineering , 2024 , 217 . |
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针对锌粉置换渣提取Ga、Ge过程浸出效果不佳的问题，本研究首先开展了常压硫酸浸出试验，考察硫酸浓度、反应温度、液固比、反应时间对Ga、Ge浸出率的影响，并对浸出过程进行了动力学分析；而后分别尝试了还原浸出(先后以Na_2SO_3、SO_2为还原剂)、硫酸化焙烧-水浸两种工艺，对锌粉置换渣开展了Ga、Ge强化浸出试验。结果表明：常压硫酸浸出工艺在硫酸浓度150 g/L、反应温度90℃、液固体积质量比5 mL/g、反应时间4 h、搅拌转速400 r/min的适宜条件下，Ga、Ge浸出率分别为68.4%、61.7%;酸浸渣主要物相为PbSO_4和ZnAl_2O_4,增加酸度可促使残留的黄钾铁矾、铅铝矾进一步溶出；Ga和Ge常压硫酸浸出过程主要受内扩散控制，反应表观活化能分别为18.06 kJ/mol和16.02kJ/mol。对一段常压硫酸浸出渣进行二段还原强化浸出，以Na_2SO_3为还原剂，在50 g/L H_2SO_4+3 g/L Na_2SO_3条件下，Ga、Ge浸出率达89.4%和70.1%;以SO_2为还原剂，在SO_2分压0.3 MPa、硫酸浓度50 g/L、反应温度110℃、、反应时间3 h条件下，Ga、Ge浸出率达88.9%和86.7%。硫酸化焙烧-水浸工艺对锌粉置换渣中Ga的浸出效果改善明显，但对Ge浸出不利，酸渣体积质量比宜为1/2.5 mL/g,并在焙烧温度300℃、焙烧时间3 h、水浸温度80℃、液固体积质量比5 mL/g、浸出时间2 h的条件下，Ga浸出率可提高到89.1%。
Keyword ：
二段还原浸出 二段还原浸出 强化浸出 强化浸出 硫酸化焙烧 硫酸化焙烧 硫酸浸出 硫酸浸出 锌粉置换渣 锌粉置换渣 锗 锗 镓 镓
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| GB/T 7714 | 赵唯淞 , 邱雪红 , 董伟楠 et al. 锌粉置换渣中镓、锗的强化浸出试验研究 [J]. | 稀有金属与硬质合金 , 2024 , 52 (04) : 17-26 . |
| MLA | 赵唯淞 et al. "锌粉置换渣中镓、锗的强化浸出试验研究" . | 稀有金属与硬质合金 52 . 04 (2024) : 17-26 . |
| APA | 赵唯淞 , 邱雪红 , 董伟楠 , 郑朝振 , 郭宝 , 蒋开喜 . 锌粉置换渣中镓、锗的强化浸出试验研究 . | 稀有金属与硬质合金 , 2024 , 52 (04) , 17-26 . |
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For the cobalt ‐ bearing copper oxide concentrate from Congo，experiment of coke reduction smelting with fayalite slag was conducted. The effects of CaO‐to‐SiO2 mass ratio，FeO ‐ to ‐ SiO2 mass ratio and coke rate on the reduction rates of copper and cobalt were investigated. The reduction sequence and conditions of copper，cobalt，iron and silicon oxides were analyzed by thermodynamics. The reduction process of copper，cobalt and iron oxides was quantitatively analyzed by means of metal oxide reduction thermodynamics and coke gasification kinetics. The results show that the reduction of copper，cobalt and iron in the copper oxide concentrate can be divided into the competitive fast reduction period in the early stage and the slow reduction period of copper and cobalt in the later stage. The reduced metal iron in the slow reduction period will undergo reoxidation. The large amount of competitive iron reduction in the early stage and its reoxidation in the later stage will reduce the reduction rate of copper，cobalt and iron and the effective utilization rate of coke. The formation mechanism of ferroalloy layer on the surface of crude copper is revealed. © 2024 Northeast University. All rights reserved.
Keyword ：
Cobalt compounds Cobalt compounds Coke Coke Copper oxides Copper oxides Iron oxides Iron oxides Silica Silica Silicon Silicon Silicon oxides Silicon oxides Slags Slags Smelting Smelting Thermodynamics Thermodynamics
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| GB/T 7714 | Zhang, Lei , Jiang, Kai-Xi , Xie, Feng et al. Reduction Behaviors of Copper， Cobalt and Iron in Smelting of Copper Oxide Concentrate [J]. | Journal of Northeastern University , 2024 , 45 (3) : 337-345 . |
| MLA | Zhang, Lei et al. "Reduction Behaviors of Copper， Cobalt and Iron in Smelting of Copper Oxide Concentrate" . | Journal of Northeastern University 45 . 3 (2024) : 337-345 . |
| APA | Zhang, Lei , Jiang, Kai-Xi , Xie, Feng , Lu, Dian-Kun . Reduction Behaviors of Copper， Cobalt and Iron in Smelting of Copper Oxide Concentrate . | Journal of Northeastern University , 2024 , 45 (3) , 337-345 . |
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在处理含细泥、高硅有色金属矿物时，常出现沉降速率慢、固液分离难等问题，不利于后续的萃取-电积过程，从而影响生产的正常运转。为解决酸浸矿浆中除硅难的问题，本工作以-2000目(6.5μm)高岭土为原料，探究了细粒高岭土在酸性体系下的絮凝沉降行为。结果表明，聚丙烯酰胺(PAM)对高岭土的絮凝性能强于聚乙二醇(PEO)。助凝剂聚苯乙烯磺酸钠(PSS)可以进一步提高絮凝效果，PAM和PEO与100 g/t PSS配合使用时絮凝作用最佳；而单宁酸(TA)的助凝效果不明显；利用聚焦光束反射测量(FBRM)发现，絮凝过程中产生絮团的大小与用药量呈正相关，但絮团越大，抗剪切能力越弱，且絮团的破坏过程是不可逆的；Zeta电位表明，PSS能够有效降低其表面电位，这是高岭土能够在酸性体系下絮凝的主要机理。
Keyword ：
助凝剂 助凝剂 絮凝沉降 絮凝沉降 酸性体系 酸性体系 高岭土 高岭土
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| GB/T 7714 | 俞新煌 , 李世淇 , 展鑫磊 et al. 酸性体系下高岭土的絮凝沉降行为 [J]. | 过程工程学报 , 2024 , 24 (08) : 993-1000 . |
| MLA | 俞新煌 et al. "酸性体系下高岭土的絮凝沉降行为" . | 过程工程学报 24 . 08 (2024) : 993-1000 . |
| APA | 俞新煌 , 李世淇 , 展鑫磊 , 郭宝 , 邓荣东 , 蒋开喜 et al. 酸性体系下高岭土的絮凝沉降行为 . | 过程工程学报 , 2024 , 24 (08) , 993-1000 . |
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针对刚果金含钴氧化铜精矿采用铁橄榄石渣型进行了焦炭还原熔炼,考察了m(CaO)/m(SiO_2),m(FeO)/m(SiO_2)和焦比等对铜、钴还原率的影响.对铜、钴、铁和硅氧化物的还原顺序和还原条件进行了热力学分析,借助金属氧化物还原热力学模型与焦炭气化动力学对铜、钴、铁氧化物的还原进程进行了量化分析.研究结果表明,氧化铜精矿中金属铜、钴、铁的还原分为前期的竞争性快速还原期和后期的铜、钴慢速还原期,在慢速还原期已经还原的金属铁还会发生再氧化;金属铁前期大量的竞争性还原和后期的再氧化会降低铜、钴、铁的还原率和焦炭的有效利用率.揭示了粗铜表面铁合金层的形成机制.
Keyword ：
FeO还原 FeO还原 氧化铜精矿 氧化铜精矿 热力学模型 热力学模型 钴 钴 铁橄榄石 铁橄榄石 铜 铜
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| GB/T 7714 | 张磊 , 蒋开喜 , 谢锋 et al. 氧化铜精矿熔炼过程中铜、钴、铁的还原行为 [J]. | 东北大学学报(自然科学版) , 2024 , 45 (03) : 337-345 . |
| MLA | 张磊 et al. "氧化铜精矿熔炼过程中铜、钴、铁的还原行为" . | 东北大学学报(自然科学版) 45 . 03 (2024) : 337-345 . |
| APA | 张磊 , 蒋开喜 , 谢锋 , 路殿坤 . 氧化铜精矿熔炼过程中铜、钴、铁的还原行为 . | 东北大学学报(自然科学版) , 2024 , 45 (03) , 337-345 . |
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Upgrading copper slag into value-added products provides an untapped opportunity to address arsenic pollution in the environment and promote waste recycling, but the problem of excessive arsenic in products remains a huge engineering challenge. Herein, we employ DFT calculations to explore the dissociation mechanism of AsMA and propose a universal descriptor for screening As removal agents for the first time. The dissociation of AsMA is related to the disturbance of the Mo-As bond by Ba and follows the "Perturbation - Re -stabilization - Dissociation" mechanism. The B Psi value of Ba is near the minimum value of -0.1058 in the universal descriptors, which renders it potential candidates for As removal agents. As expected, Ba can increase As removal efficiency by approximately 45 % when employing the Si-Ca-Ba alloy compared to other Ca -based alloys. This work offers contributions to the As removal technology for copper slag value-added products while also highlighting the DFT calculations used in guiding engineering practices.
Keyword ：
Carbothermal reduction Carbothermal reduction Copper slag Copper slag DFT DFT Reactive metals Reactive metals Universal descriptor Universal descriptor
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| GB/T 7714 | Wan, Xingyuan , Jiang, Kaixi , Zhang, Ting'an et al. From theory to practice: Dissociation of AsMA under reactive metal perturbations for the harmlessness and resourcefulness of copper slag [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 489 . |
| MLA | Wan, Xingyuan et al. "From theory to practice: Dissociation of AsMA under reactive metal perturbations for the harmlessness and resourcefulness of copper slag" . | CHEMICAL ENGINEERING JOURNAL 489 (2024) . |
| APA | Wan, Xingyuan , Jiang, Kaixi , Zhang, Ting'an , Wang, Kun , Yang, Han , Lin, Shengnan . From theory to practice: Dissociation of AsMA under reactive metal perturbations for the harmlessness and resourcefulness of copper slag . | CHEMICAL ENGINEERING JOURNAL , 2024 , 489 . |
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In civil engineering, both rapid setting and delayed setting are needed for various application scenarios. In order to regulate the setting time of concrete, the iron ore tailings-blast furnace slag (IOT-BFS)-based geopolymers were synthesized with a broad range of setting time and a high compressive strength in this study. The factors of iron ore tailings content, alkali content, liquid-solid ratio, and modulus of alkali activator on setting time of the geopolymers were analyzed. The setting times of geopolymers are tested by a manual Vicat apparatus, and their microstructure is characterized by scanning electron microscopy (SEM), as well as that the hydration heat flow is characterized by an isothermal heat conduction calorimeter (TAM Air). It is found that setting time of the geopolymers was mostly affected by the modulus of alkaline activators due to the reasons that changes in modulus lead to the accelerated hydration reaction, formation of low-polymeric silicates, generation of gels, and encapsulation of precursor particles caused by high viscosity. Adjusting the modulus of the alkaline activator to 0.8 can control the initial setting time of the geopolymers to around 3 min. When the modulus ranges from 1-1.8, the initial setting time fell in the range of 15-45 min. For an alkaline activator modulus of 2, the initial setting time increased to 108 min. This study gives a clue for the preparation of geopolymers with adjustable setting times for multi-scenario applications in construction materials.
Keyword ：
gel evolution gel evolution geopolymer building materials geopolymer building materials iron ore and blast-furnace slag residues iron ore and blast-furnace slag residues microstructure of geopolymer microstructure of geopolymer rapid setting rapid setting setting time range setting time range waste-based geopolymer waste-based geopolymer
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| GB/T 7714 | Wang, Tianyu , Rao, Feng , Yang, Lang et al. Influence of Wastes and Synthesis Conditions on the Compressive Strength, Setting Time and Gels of Waste-Based Geopolymers [J]. | GELS , 2024 , 10 (11) . |
| MLA | Wang, Tianyu et al. "Influence of Wastes and Synthesis Conditions on the Compressive Strength, Setting Time and Gels of Waste-Based Geopolymers" . | GELS 10 . 11 (2024) . |
| APA | Wang, Tianyu , Rao, Feng , Yang, Lang , Jiang, Kaixi , Lin, Nanan , Mo, Liwei . Influence of Wastes and Synthesis Conditions on the Compressive Strength, Setting Time and Gels of Waste-Based Geopolymers . | GELS , 2024 , 10 (11) . |
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