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学者姓名：库建刚
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Abstract ：
针对现有微磁模拟软件无法直接计算磁力、宏观磁场下磁性矿粒所受磁力计算不精确以及动态磁化过程不明等问题,利用微磁学理论和数值模拟技术对现有的磁性矿粒磁力计算方式进行改进,结合多物理仿真软件COMSOL的物理场开发器、APP开发器以及磁场无电流物理场设计了一种计算磁性矿粒精确受力的软件.详细说明了磁性矿粒微磁模拟软件的原理,并将该软件与微磁学专业软件MERRILL在自发磁化状态下进行对比,最后比较传统仿真磁力计算方法和微磁学磁力计算方法在均匀磁场下计算 100 nm不规则磁铁矿颗粒磁力的准确性.研究结果表明:以相同的网格大小 5 nm对 80 nm的立方体磁性矿粒进行模拟,2 种软件呈现的不同初始状态的自发磁化状态一致;使用磁滞回线展现了正八面体磁性矿粒在变化磁场中的动态磁化过程;在均匀磁场下,采用微磁学的磁力计算方法相较于传统计算方法计算精度由 10-3 数量级提高至 10-11 数量级;该软件为从微磁学角度进行磁选理论研究提供了一个有力的工具,进一步促进了磁性矿粒在磁选过程中的动态磁化过程研究,对于提高磁性矿粒的磁力计算精度具有重要意义.
Keyword ：
二次开发 二次开发 微磁模拟 微磁模拟 矿物分选 矿物分选 磁力计算 磁力计算
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| GB/T 7714 | 丁伟 , 王前 , 李欣 et al. 磁性矿粒动态磁化模拟及精确磁力计算 [J]. | 金属矿山 , 2024 , (7) : 139-145 . |
| MLA | 丁伟 et al. "磁性矿粒动态磁化模拟及精确磁力计算" . | 金属矿山 7 (2024) : 139-145 . |
| APA | 丁伟 , 王前 , 李欣 , 库建刚 . 磁性矿粒动态磁化模拟及精确磁力计算 . | 金属矿山 , 2024 , (7) , 139-145 . |
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本发明提供一种磁性参数可控的浸染状嵌布人工磁铁矿及其制作方法，通过调整精矿与填充材料的掺比及嵌布均匀性，调控该样本的总磁矩、单位体积磁矩、磁化率等磁性参数及TFe质量分数，并且在固化过程中辅助转动平台以保证精矿均匀弥散，还原磁铁矿在自然界中的嵌布特征。主要优点在于目的矿物嵌布均匀性好、可按需设计制作，ω(TFe)覆盖范围广、部分磁性参数可控，原理可靠，工艺简单，易于分析测试，成品可用于矿物加工实验、教学、测试磁选设备选矿参数及性能等。
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| GB/T 7714 | 库建刚 , 雷中云 , 王凯文 et al. 一种磁性参数可控的浸染状嵌布人工磁铁矿及其制作方法 : CN202210381262.1[P]. | 2022-04-13 00:00:00 . |
| MLA | 库建刚 et al. "一种磁性参数可控的浸染状嵌布人工磁铁矿及其制作方法" : CN202210381262.1. | 2022-04-13 00:00:00 . |
| APA | 库建刚 , 雷中云 , 王凯文 , 赵睿祺 , 谢贻楠 . 一种磁性参数可控的浸染状嵌布人工磁铁矿及其制作方法 : CN202210381262.1. | 2022-04-13 00:00:00 . |
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Abstract ：
所述的一种磁性参数可控的弥散型人工磁铁矿及其制造方法，通过调整精矿和填充料的掺杂比例和弥散均匀性，调控样品的总磁矩、单位体积磁矩、磁化率等磁性参数和TFe质量分数； 并且在熟化过程中辅助有旋转平台，保证精矿分散均匀，降低磁铁矿在自然界中的包埋特性。 该方法的主要优点是目标矿物嵌布均匀性好，可根据需要设计制造，ω(TFe)覆盖范围广，部分磁性参数可控，原理可靠，工艺简单，易于分析测试，成品可用于选矿实验、教学、测试选矿参数和磁选设备性能等。
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| GB/T 7714 | Ku Jiangang , Lei Zhongyun , Wang Kaiwen et al. 一种磁性参数可控的浸渍弥散型人工磁铁矿及其制造方法 : ZA202213247[P]. | 2022-12-07 00:00:00 . |
| MLA | Ku Jiangang et al. "一种磁性参数可控的浸渍弥散型人工磁铁矿及其制造方法" : ZA202213247. | 2022-12-07 00:00:00 . |
| APA | Ku Jiangang , Lei Zhongyun , Wang Kaiwen , Zhao Ruiqi , Xie Yinan . 一种磁性参数可控的浸渍弥散型人工磁铁矿及其制造方法 : ZA202213247. | 2022-12-07 00:00:00 . |
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The direct and rapid determination of trace cobalt ion (Co2+) in the electrolyte of zinc smelting plants is urgently needed but is impeded by the severe interference of extremely high-concentration zinc ions in the solution. Herein, colorimetric detection of Co2+ by the polyvinylpyrrolidone functionalized silver nanoparticles (PVP-AgNPs) is realized in solutions with the Zn/Co ratio being high, up to (0.8-5) x 10(4), which is located within the ratio range in industrial solution. The high concentration of Zn2+ induces a strong attenuation of Co2+-related signals in ultraviolet-visible (UV-vis) extinction spectra; nevertheless, a good linear range for detecting 1-6 mg/L Co2+ in 50 g/L Zn2+ solution is still acquired. The strong anti-interference toward other metal ions and the mechanism understanding for trace Co2+ detection in such a high-concentration Zn2+ solution are also revealed by systematic analysis techniques. The results extend the AgNPs as colorimetric sensors to industrial solutions, providing a new strategy for detecting trace-metal ions in industrial plants.
Keyword ：
colorimetric detection colorimetric detection industrial high-concentration zinc solution industrial high-concentration zinc solution polyvinylpyrrolidone polyvinylpyrrolidone silver nanoparticles silver nanoparticles trace Co2+ determination trace Co2+ determination
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| GB/T 7714 | Xiao, Ni , Weng, Wei , Tang, Ding et al. Extending Ag Nanoparticles as Colorimetric Sensor to Industrial Zinc Electrolyte for Cobalt Ion Detection [J]. | MOLECULES , 2023 , 28 (2) . |
| MLA | Xiao, Ni et al. "Extending Ag Nanoparticles as Colorimetric Sensor to Industrial Zinc Electrolyte for Cobalt Ion Detection" . | MOLECULES 28 . 2 (2023) . |
| APA | Xiao, Ni , Weng, Wei , Tang, Ding , Tan, Wen , Zhang, Liye , Deng, Zheyuan et al. Extending Ag Nanoparticles as Colorimetric Sensor to Industrial Zinc Electrolyte for Cobalt Ion Detection . | MOLECULES , 2023 , 28 (2) . |
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At present, a large quantity of iron resource could not be utilized effectively, such as iron oxides (e.g., oolitic hematite, limonite and cyanide residue) and smelting slags in the form of fayalite (e.g., iron slag, copper slag and nickel slag). This kind of iron resources, containing 30%-40% iron, is still very difficult to be recycled or utilized. Currently, deep reduction technology, which has been put forward to improve the grade of iron ore, is developing rapidly and is expected to solve the resource problem. But the research on the mechanism of iron grain nucleation and growth behavior in the deep reduction process is not systematic and thorough. We summarize the thermodynamic theory of iron grain nucleation, combined with Turnbull linear model and DubeyRamachandrarao theoretical model. Based on Hillert-type 3D grain growth rate model and Avrami-Erofeyev model, the total free energy in the reaction process is analyzed, critical nucleation radius of iron grain is calculated, the mechanism of iron grain nucleation and growth behavior of iron grain is clarified. This paper provides a systematic theory and experimental validation for nucleation mechanism and iron grain growth behavior in deep reduction of Fe-based oxygen carrier.
Keyword ：
Deep reduction Deep reduction Growth Growth Iron grain Iron grain Nucleation Nucleation Supercooling degree Supercooling degree
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| GB/T 7714 | Lin, Hanyu , Ran, Hongxiang , Zhong, Shuiping et al. Review on nucleation and growth behavior of iron grain during deep reduction [J]. | POWDER TECHNOLOGY , 2023 , 424 . |
| MLA | Lin, Hanyu et al. "Review on nucleation and growth behavior of iron grain during deep reduction" . | POWDER TECHNOLOGY 424 (2023) . |
| APA | Lin, Hanyu , Ran, Hongxiang , Zhong, Shuiping , Ku, Jiangang . Review on nucleation and growth behavior of iron grain during deep reduction . | POWDER TECHNOLOGY , 2023 , 424 . |
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The investigation of the magnetic characteristics of magnetic nanostructures (MNs) in various dimensions is a crucial direction of research in nanomagnetism, with MNs belonging to various dimensions exhibiting magnetic properties related to their geometry. A better understanding of these magnetic properties is required for MN manipulation. The primary tools for researching MNs are magnetic characterisation techniques with great spatial resolution and spin sensitivity. Micromagnetic simulation is another technique that minimises experimental costs, while providing information on the magnetic structure and magnetic behaviour, and has enormous potential for predicting, validating, and extending the magnetic characterisation results. This review first looks at the progress of research into quantitatively characterising the magnetic properties of low-dimensional (including 0D, 1D, and 2D) and 3D MNs in two directions: magnetic characterisation techniques and micromagnetic simulations, with a particular emphasis on the potential for future applications of these techniques. Single magnetic characterization techniques, single micromagnetic simulations, or a mix of both are utilised in these research studies to investigate MNs in a variety of dimensions. How the magnetic characterisation techniques and micromagnetic simulations can be better applied to MNs in various dimensions is then outlined. This discussion has significant application potential for low-dimensional and 3D MNs. This minireview summarizes the advanced strategies for studying magnetic nanostructures from zero to three dimensions via magnetic characterization techniques and micromagnetic simulations.
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| GB/T 7714 | Li, Xin , Wang, Zhaolian , Lei, Zhongyun et al. Magnetic characterization techniques and micromagnetic simulations of magnetic nanostructures: from zero to three dimensions [J]. | NANOSCALE , 2023 , 15 (48) : 19448-19468 . |
| MLA | Li, Xin et al. "Magnetic characterization techniques and micromagnetic simulations of magnetic nanostructures: from zero to three dimensions" . | NANOSCALE 15 . 48 (2023) : 19448-19468 . |
| APA | Li, Xin , Wang, Zhaolian , Lei, Zhongyun , Ding, Wei , Shi, Xiao , Yan, Jujian et al. Magnetic characterization techniques and micromagnetic simulations of magnetic nanostructures: from zero to three dimensions . | NANOSCALE , 2023 , 15 (48) , 19448-19468 . |
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Real-time and rapid determination of trace copper ion (Cu2+) in the electrolyte of zinc smelting process is urgently needed. However, the complicated composition of the electrolyte, especially the extremely high-concentration of zinc ion (Zn2+) may cause severe interference to the detection of Cu2+. This work describes a facile electrochemical sensor for Cu2+ determination in the electrolyte of zinc smelting plants based on a fluorine-doped tin oxide (FTO) electrode with silver nanowires (AgNWs) and Nafion modification. The AgNWs/Nafion-FTO electrode showed good detection ability with the linear detection range of 0.2-2 mg l-1 Cu2+ in 45 g l-1 Zn2+ solution using differential pulse anodic stripping voltammetry (DPASV) technique. With DPASV technique, Cu2+ can be first reduced and pre-concentrated on the working electrode surface at -0.6 V vs Ag/AgCl for 500 s, after which the deposited Cu metal is oxidized around 0 V vs Ag/AgCl during the stripping step. It has been proved by transmission electron microscopy (TEM) and X-ray photoelectron spectra (XPS) that trace Cu2+ can be adsorbed and reduced on AgNWs in solutions with Zn/Cu ratio up to (2.25-22.5) x 104. The results extend AgNWs modified electrode to the industrial solution, providing a new strategy for detection of trace metal ions in industrial solutions.
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| GB/T 7714 | Xiao, Ni , Chen, Yinan , Tan, Wen et al. Extending Silver Nanowire Modified Electrodes to Industrial Zinc Electrolyte for Copper Ion Detection [J]. | JOURNAL OF THE ELECTROCHEMICAL SOCIETY , 2023 , 170 (9) . |
| MLA | Xiao, Ni et al. "Extending Silver Nanowire Modified Electrodes to Industrial Zinc Electrolyte for Copper Ion Detection" . | JOURNAL OF THE ELECTROCHEMICAL SOCIETY 170 . 9 (2023) . |
| APA | Xiao, Ni , Chen, Yinan , Tan, Wen , Ku, Jiangang , Wang, Qiang , Chen, Hang et al. Extending Silver Nanowire Modified Electrodes to Industrial Zinc Electrolyte for Copper Ion Detection . | JOURNAL OF THE ELECTROCHEMICAL SOCIETY , 2023 , 170 (9) . |
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High gradient magnetic separation technology is a green production technology that has an unparalleled superiority in separating fine and weak magnetic particles. As the characteristics of poor, fine, and heterogeneous in weakly magnetic mineral resources (hematite, wolframite, rhodochrosite, etc.), the importance of developing the technology is constantly highlighted. Meanwhile, the research and development of energy-saving, high-efficiency and lightweight high gradient magnetic separators (HGMS) becomes necessary to achieve the mining industry's carbon neutrality aim. This paper systematically summarized the magnetic particle motion dynamics model and magnetic particle accumulation model based on the magnetic field distribution. The basic concepts for optimizing the sorting effect, methods for reducing power consumption and magnetic energy dissipation are also proposed. Our work proposes new theoretical frameworks and perspectives on capturing magnetic particles in HGMSs, which facilitates researchers to deepen their understanding of the mechanism of HGMSs, and is conducive to the further optimization of the design and the development of better cleaner production technologies for the sustainable development of the iron and steel industry.
Keyword ：
Accumulation model Accumulation model Carbon neutrality Carbon neutrality Force analysis Force analysis High gradient magnetic separator (HGMS) High gradient magnetic separator (HGMS) Low carbon production Low carbon production Particle trajectory models Particle trajectory models
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| GB/T 7714 | Lin, Hanyu , Li, Xin , Lei, Zhongyun et al. Developing high gradient magnetic separators for greener production: Principles, design, and optimization [J]. | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS , 2023 , 587 . |
| MLA | Lin, Hanyu et al. "Developing high gradient magnetic separators for greener production: Principles, design, and optimization" . | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 587 (2023) . |
| APA | Lin, Hanyu , Li, Xin , Lei, Zhongyun , Ku, Jiangang , Wang, Zhaolian . Developing high gradient magnetic separators for greener production: Principles, design, and optimization . | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS , 2023 , 587 . |
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We used a 3D finite element method (FEM) to calculate the interaction force between two uniformly magnetized particles. The calculation results of finite element are compared with the calculation results of two magnetic dipole formulas commonly used in literature. The magnetic strength and magnetic induction intensity on the surface of a magnetized particle in magnetic field is integrated, then the magnetic field strength H herm in formula is corrected and a more accurate magnetic dipole formula is derived. The results show that when the inter-particle distance is less than 2. 5 times the particle diameter, compared with the finite element calculation results, the error of magnetic dipole formulas is significant. The error decreases with the increase of inter-particle distance, but the minimum value is still more than 31%. Compared with the 3D-FEM, the error of magnetic force calculated by the new formula can be reduced to less than 3%, which significantly improves the calculation accuracy of magnetic force between adjacent magnetic particles. © 2023 China University of Mining and Technology. All rights reserved.
Keyword ：
3D FEM 3D FEM attractive force attractive force magnetic dipole magnetic dipole magnetic sphere magnetic sphere new formula new formula
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| GB/T 7714 | Zhao, Y. , Ran, H. , Yan, Q. et al. Study of the magnetic force between magnetic particles in magnetic field based on 3D-FEM; [磁场中磁性颗粒间磁力的三维有限元分析] [J]. | Journal of China University of Mining and Technology , 2023 , 52 (5) : 1022-1029 . |
| MLA | Zhao, Y. et al. "Study of the magnetic force between magnetic particles in magnetic field based on 3D-FEM; [磁场中磁性颗粒间磁力的三维有限元分析]" . | Journal of China University of Mining and Technology 52 . 5 (2023) : 1022-1029 . |
| APA | Zhao, Y. , Ran, H. , Yan, Q. , Ku, J. . Study of the magnetic force between magnetic particles in magnetic field based on 3D-FEM; [磁场中磁性颗粒间磁力的三维有限元分析] . | Journal of China University of Mining and Technology , 2023 , 52 (5) , 1022-1029 . |
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采用有限元法构建三维磁偶极子模型，对均匀磁化的两磁性颗粒间的相互作用力进行计算.将有限元计算结果与文献中常用的2种磁偶极子公式计算结果进行比较，基于此，对磁场中磁性颗粒表面的磁场强度、磁感应强度进行积分，并对磁偶极子公式中的磁场强度H项进行修正，推导出新的磁偶极子公式.结果表明：当颗粒间距小于2.5倍粒径时，相较于有限元计算结果，改进磁偶极子公式、局部磁偶极子公式的磁力误差较大，误差随间距的增加而减小，但最小值仍大于31%.本文推导出的新公式相对于有限元法计算磁力的误差可降低至3%以下，显著提高了毗邻磁性颗粒间的磁力计算准确度.
Keyword ：
三维有限元 三维有限元 新公式 新公式 磁作用力 磁作用力 磁偶极子 磁偶极子 磁性颗粒 磁性颗粒
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| GB/T 7714 | 赵一飞 , 冉红想 , 晏全香 et al. 磁场中磁性颗粒间磁力的三维有限元分析 [J]. | 中国矿业大学学报 , 2023 , 52 (05) : 1022-1029 . |
| MLA | 赵一飞 et al. "磁场中磁性颗粒间磁力的三维有限元分析" . | 中国矿业大学学报 52 . 05 (2023) : 1022-1029 . |
| APA | 赵一飞 , 冉红想 , 晏全香 , 库建刚 . 磁场中磁性颗粒间磁力的三维有限元分析 . | 中国矿业大学学报 , 2023 , 52 (05) , 1022-1029 . |
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