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Effect mechanism of aluminum occurrence and content on the induration characteristics of iron ore pellets

International Journal of Minerals,Metallurgy and Materials 2023年第12期30卷 2334-2346页

作者： Hongyu Tian Deqing Zhu Jian Pan congcong yang Weiqun Huang Mansheng Chu School of Metallurgy Northeastern UniversityShenyang 110819China School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Ecological Geology Brigade of Jiangxi Geological Bureau Nanchang 330030China Engineering Research Center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819China

With the intensified depletion of high-grade iron ores,the increased aluminum content in iron ore concentrates has become unavoidable,which is detrimental to the pelletization ***,the effect mechanism of aluminum on pellet quality must be *** this study,the influence of aluminum occurrence and content on the induration of hematite(H)and magnetite(M)pellets was investigated through the addition of corresponding Al-containing additives,including alumina,alumogoethite,gibbsite,and *** mineralogical analysis,combined with the thermodynamic properties of different aluminum occurrences and the quantitative characterization of consolidation behaviors,were conducted to determine the related *** results showed that the alumina from various aluminum occurrences adversely affected the induration characteristics of pellets,especially at an aluminum content of more than 2.0wt%.The thermal decomposition of gibbsite and kaolinite tends to generate internal stress and fine cracks,which hinder the respective microcrystalline bonding and recrystallization between *** adverse effect on the induration characteristics of fired pellets with different aluminum occurrences can be relieved to varying degrees through the formation of liquid phase bonds between the hematite *** is more beneficial to the induration process than the other three aluminum occurrences because of the formation of more liquid phase,which improves pellet *** research results can further provide insights into the effect of aluminum occurrence and content in iron ore concentrates on downstream processing and serve as a guide for the utilization of high-alumina iron ore concentrates in pelletization.

关键词： iron ore pellet aluminum occurrence consolidation behavior element migration

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An integrated portable bio-monitoring system based on tough hydrogels for comprehensive detection of physiological activities

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Nano Research 2024年第1期17卷 321-332页

作者： congcong yang Chenchen Ji Fengjiao Guo Chunjiang Jin Hongyu Mi Zhongchang Wang State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources School of Chemical Engineering and TechnologyXinjiang UniversityUrumqi 830017China International Iberian Nanotechnology Laboratory(INL) Avenide Mestre Jose VeigaBraga 4715-330Portugal

Advanced soft ion-conducting hydrogels have been developed rapidly in the integrated portable health monitoring equipment due to their higher sensitivity,sensory traits,tunable conductivity,and stretchability for physiological activities and personal healthcare ***,traditional hydrogel conductors are normally susceptible to large deformation and strong mechanical stress,which leads to inferior electro-mechanical stability for real application ***,a strong ionically conductive hydrogel(poly(vinyl alcohol)-boric acid-glycerol/sodium alginate-calcium chloride/electrolyte ions(PBG/SC/EI))was designed by engineering the covalently and ionically crosslinked networks followed by the salting-out effect to further enhance the mechanical strength and ionic conductivity of the *** to the collective effects of the energy-dissipation mechanism and salting-out effect,the designed PBG/SC/EI with excellent structural integrity and robustness exhibits exceptional mechanical properties(elongation at break for 559.1%and tensile strength of 869.4 kPa)and high ionic conductivity(1.618 S·m^(-1)).As such,the PBG/SC/EI strain sensor features high sensitivity(gauge factor=2.29),which can effectively monitor various kinds of human motions(joint motions,facial micro-expression,faint respiration,and voice recognition).Meanwhile,the hydrogel-based Zn||MnO_(2)battery delivers a high capacity of 267.2 mAh·g^(-1)and a maximal energy density of 356.8 Wh·kg^(-1)associated with good cycle performance of 71.8%capacity retention after 8000 ***,an integrated bio-monitoring system with the sensor and Zn||MnO_(2)battery can accurately identify diverse physiological activities in a real-time and non-invasive *** work presents a feasible strategy for designing high-performance conductive hydrogels for highly-reliable integrated bio-monitoring systems with excellent practicability.

关键词： Ionically conductive hydrogel strain sensor Zn-based battery integrated bio-monitoring system human motion monitoring

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Polyanionic hydrogel electrolyte enables reversible and durable Zn anode for efficient Zn-based energy storage

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Journal of Energy Chemistry 2023年第11期86卷 373-381,I0008页

作者： Chunjiang Jin congcong yang Hongyu Mi Chenchen Ji Fengjiao Guo Chengzhe Liu Ziqiang Liu Nianjun yang State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources School of Chemical Engineering and TechnologyXinjiang UniversityUrumqi 830017XinjiangChina Department of Chemistry Hasselt UniversityDiepenbeek 3590Belgium

Aqueous Zn-ion energy storage systems,which are expected to be integrated into intelligent electronics as a secure power supply,suffer poor reversibility of Zn anodes,predominantly associated with dendritic growth and side *** study introduces a polyanionic strategy to address these formidable issues by developing a hydrogel electrolyte(PACXHE)with carboxyl ***,the carboxyl groups within the hydrogel structure establish favorable channels to promote the transport of Zn^(2+)*** also expedite the desolvation of hydrated Zn^(2+)ions,leading to enhanced deposition ***,these functional groups confine interfacial planar diffusion and promote preferential deposition along the(002)plane of Zn,enabling a smooth surface texture of the Zn *** multifaceted regulation successfully achieves the suppression of Zn dendrites and side reactions,thereby enhancing the electrochemical reversibility and service life during plating/stripping ***,such an electrolyte demonstrates a high average Coulombic efficiency of 97.7%for 500 cycles in the Zn‖Cu cell and exceptional cyclability with a duration of 480 h at 1 mA cm^(-2)/1 mA h cm^(-2)in the Zn‖Zn *** that,the Zn-ion hybrid micro-capacitor employing PACXHE exhibits satisfactory cycling stability,energy density,and practicality for energy storage in flexible,intelligent *** present polyanionic-based hydrogel strategy and the development of PACXHE represent significant advancements in the design of hydrogel electrolytes,paving the way for a more sustainable and efficient future in the energy storage field.

关键词： Polyanionic hydrogel electrolyte Zinc anode issues Dendrite suppression Electrochemical performance Zinc-ionhybrid micro-capacitor

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Sex-biased genes and metabolites explain morphologically sexual dimorphism and reproductive costs in Salix paraplesia catkins

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Horticulture Research 2021年第1期8卷 1602-1617页

作者： Zeyu Cai congcong yang Jun Liao Haifeng Song Sheng Zhang Key Laboratory of Mountain Surface Processes and Ecological Regulation Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengduChina University of Chinese Academy of Sciences BeijingChina Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengduChina College of Geography and Tourism Chongqing Normal UniversityChongqingChina

Dioecious species evolved from species with monomorphic sex systems in order to achieve overall fitness gains by separating male and female *** reproductive organs,unisexual flowers have different reproductive roles and exhibit conspicuous sexual *** date,little is known about the temporal variations in and molecular mechanisms underlying the morphology and reproductive costs of dioecious *** investigated male and female flowers of Salix paraplesia in three flowering stages before pollination(the early,blooming and late stages)via transcriptional sequencing as well as metabolite content and phenotypic *** found that a large number of sex-biased genes,rather than sex-limited genes,were responsible for sexual dimorphism in *** flowers and that the variation in gene expression in male flowers intensified this situation throughout flower *** temporal dynamics of sex-biased genes derived from changes in reproductive function during the different flowering *** differentiated metabolites related to respiration and flavonoid biosynthesis exhibited the same bias directions as the sex-biased *** sex-biased genes were involved mainly in signal transduction,photosynthesis,respiration,cell proliferation,phytochrome biosynthesis,and phenol metabolism;therefore,they resulted in more biomass accumulation and higher energy consumption in male *** results indicated that sex-biased gene expression in *** flowers is associated with different reproductive investments in unisexual flowers;male flowers require a greater reproductive investment to meet their higher biomass accumulation and energy consumption needs.

关键词： metabolism flowers intensified

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Current situation of carbon emissions and countermeasures in China's ironmaking industry

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1633-1650页

作者： Chenmei Tang Zhengqi Guo Jian Pan Deqing Zhu Siwei Li congcong yang Hongyu Tian School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

The iron and steel industry(ISI) involves high energy consumption and high pollution. ISI in China, a leading country in the ISI,consumed 15% of the country’s total energy and produced more than 50% of the global ISI’s carbon emissions. Therefore, in the context of global low-carbon economy and emission reduction requirements, low-carbon smelting technology in the ISI has attracted increasingly more attention in China. This review summarizes the current status of carbon emissions and energy consumption in China’s ISI and discusses the development status and prospects of low-carbon ironmaking technology. The main route to effectively reducing carbon emissions is to develop a gas-based direct reduction process and replace sintering with pelletizing, both of which focus on developing pelletizing technology. However,the challenge of pelletizing process development is to obtain high-quality iron concentrates. Consequently, the present paper also summarizes the development status of China’s mineral processing technology, including fine-grained mineral processing technology, magnetization roasting technology, and flotation collector application. This paper aims to provide a theoretical basis for the low-carbon development of China’s ISI in terms of a dressing–smelting combination.

关键词： iron and steel industry carbon dioxide emissions low-carbon technology beneficiation technology

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Integration of preparation of K,Na-embedded activated carbon and reduction of Zn-bearing dusts

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International Journal of Mining Science and Technology 2022年第3期32卷 627-636页

作者： Dingzheng Wang Deqing Zhu Jian Pan Zhengqi Guo congcong yang Hongyu Tian Yuxiao Xue School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

Large amounts of solid wastes and flue gases are generated in iron and steel production process,probably leading to serious environmental pollution without duly *** innovative and green process of simultaneous reduction of zinc-bearing dusts and activation of low-rank coal was developed and its mechanism was clarified in this *** the optimal conditions,the reduced zinc-bearing dusts containing low harmful elements(0.02%Zn,0.015%K and 0.03%Na)could be made as high-quality burden for blast furnace while the low-rank coal was transferred into K,Na-embedded activated carbon,which can be used as effective adsorbent for purification of SO_(2) and NO-containing flue *** solid wastes were successfully utilized to treat the flue gases through the *** synergetic activation and reduction mechanism in the process was *** coupling effect between reduction reactions of metal oxides in the dusts and activation reaction of carbon in the coal promoted the simultaneous reduction and activation *** the meanwhile,part of the potassium and sodium from the zinc-bearing dusts could be adsorbed by the activated carbon and played a catalytic role in the activation process.

关键词： Zinc-bearing dusts Reduction Activated carbon Activation mechanism Adsorption

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Recent progress on garnet phosphor ceramics for high power solid-state lighting

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Journal of Materials Science & Technology 2023年第35期166卷 1-20页

作者： congcong yang Xiyue Zhang Jian Kang Cong Wei Pengfei Sang Shenghui Lin Bingheng Sun Jintai Fan Benxue Jiang yang Li Xinrong Chen Jian Xu Hao Chen Le Zhang Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronics EngineeringJiangsu Normal UniversityXuzhou 221116China Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology Xuzhou 221400China Shanghai Institute of Optics Fine Mechanics Chinese Academy of SciencesShanghai 201800China School of Material Science and Engineering Shanghai Institute of TechnologyShanghai 201418China School of Physics and Electronic Information Henan Polytechnic UniversityJiaozuo 454000China Xuzhou Fuchang Electronic Technology Co. Ltd.Xuzhou 221116China Xuzhou Kangna Advanced Materials Technology Co.Ltd. Xuzhou 221400China

As the fourth-generation light source,solid-state lighting has developed rapidly in the past 30 years due to its advantages of high efficiency and environmental *** is widely used in various scenes such as automobile headlights,projection displays,industrial production,and remote ***-power,high-brightness white light-emitting diodes(LEDs)and laser diodes(LDs)technology put forward new requirements for the service stability of color conversion *** phosphor ceramics have emerged with their unique advantages of withstanding high power excitation density and the flexibly tunable *** this article,the research progress of garnet based phosphor ceramics for high-power solid-state lighting was comprehensively ***,the band gap and coordination environment regulations of luminescence centers of garnet phosphor were ***,the improvement of luminous efficacy via defects regulation was ***,the relationship between the geometric design and the lighting performance was ***,the characterization methods of phosphor ceramics for laser lighting were introduced and ***,the development trend of garnet phosphor ceramics in solid state lighting and display was prospected.

关键词： Garnet phosphor ceramics High power excitation density Crystal field regulation Micro-scale defects Geometric structural design Luminescence evaluation standard

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High recorded color rendering performance of single-structured Ce,Mn:Y_(3)(Al,Sc)_(2)Al_(3)O_(12)phosphor ceramics for high-power white LEDs/LDs

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Journal of Advanced Ceramics 2024年第6期13卷 810-820页

作者： Xuanchu Liu congcong yang Yanbin Li Chang Min Jian Kang Tianyuan Zhou Chunming Zhou Chaofan Shi Cen Shao Bingheng Sun Wieslaw Strek Hao Chen Le Zhang Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronics EngineeringJiangsu Normal UniversityXuzhou 221116China Jiangsu Xiyi Advanced Materials Research Institute of Industrial Technology Xuzhou 221400China Xuzhou EAGLED Technology Co. Ltd.Xuzhou 221116China Xuzhou Kangna Advanced Materials Technology Co. Ltd.Xuzhou 221116China Shanghai Institute of Optics Fine Mechanics Chinese Academy of SciencesShanghai 201800China Institute of Low Temperature and Structure Research Polish Academy of SciencesWroclaw 50-422Poland State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China

Achieving a high color rendering index(CRI)and luminous stability in single-structured Ce:Y_(3)Al_(5)O_(12)(Ce:YAG)phosphor ceramics(PCs)is crucial for high-power white light-emitting diodes or laser diodes(LEDs/LDs).However,cyan valleys and insufficient amounts of the red component in the Ce:YAG emission spectra significantly limit their real *** this work,a series of Ce,Mn:Y_(3)(Al,Sc)_(2)Al_(3)O_(12)(Ce,Mn:YSAG)PCs were fabricated by vacuum sintering,and efficient spectral regulation was realized for full-color *** cyan valley was filled by the blueshifted emission peak of Ce^(3+)via Sc^(3+)*** orange‒red emission at approximately 580 nm was effectively supplemented via Mn^(2+)*** particular,CRI of Ce,Mn:YSAG increased from 56.4 to 85.8,a 52%increase compared with that of Ce:YAG under high-power LED excitation,and the operating temperature was stable at approximately 50℃for long working ***,CRI of 80.9 could still be obtained for PC-based white *** results indicated that Ce,Mn:YSAG PC,which has excellent CRI and luminous stability,is an extremely promising color convertor for high-power white LEDs/LDs.

关键词： color rendering index(CRI) color converter Ce:Y_(3)Al_(5)O_(12)(Ce:YAG)phosphor ceramics(PCs) high-power white light-emitting diodes or laser diodes(LEDs/LDs) luminous stability

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蒸发冷却新风空调器的性能对比

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中南大学学报（自然科学版） 2021年第6期52卷 1747-1756页

作者：杨聪聪任承钦杨洋涂敏湖南大学机械与运载工程学院湖南长沙410082 南华大学土木工程学院湖南衡阳421001

基于能量和㶲分析的方法对2种传统型和2种改进型蒸发冷却新风空调器(FAC)进行对比;将各FAC和机械蒸汽压缩空调(MVC)组成4种不同的蒸发冷却复合空调(HAC),对其节能性进行对比分析。首先,建立喷淋填料和翅片式表冷器的分布式参数模型以及MV... 详细信息

基于能量和㶲分析的方法对2种传统型和2种改进型蒸发冷却新风空调器(FAC)进行对比;将各FAC和机械蒸汽压缩空调(MVC)组成4种不同的蒸发冷却复合空调(HAC),对其节能性进行对比分析。首先,建立喷淋填料和翅片式表冷器的分布式参数模型以及MVC的关联式模型,并对喷淋填料和翅片式表冷器的数学模型进行验证。其次,研究4个独立参数(环境空气温度、含湿量、新风质量流量和传热单元数)对各FAC的性能系数(COP)、㶲效率和㶲效比的影响以及对各HAC节能率的影响。最后,评估4种HAC在气候干热的吐鲁番的夏季季节性节能潜力。研究结果表明:各FAC的㶲效率和㶲效比随环境空气温度增加而升高,随新风质量流量的增加而降低,随传热单元数的增加先升高后降低(FAC-C除外);所有HAC均适用于干热气候地区,其节能率随新风质量流量和传热单元数的增加先升高后降低;在吐鲁番,HAC比通入新风的MVC节能24.7%~32.8%;HAC-D的节能率始终最大,它是4种方案中的首推方案。

关键词：蒸发冷却新风空调器能量分析㶲分析

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AI-Enhanced Secure Data Aggregation for Smart Grids with Privacy Preservation

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Computers, Materials & Continua 2025年第1期82卷 799-816页

作者： congcong Wang Chen Wang Wenying Zheng Wei Gu School of Software Nanjing University of Information Science and TechnologyNanjing210044China School of Information Science and Engineering Zhejiang Sci-Tech UniversityHangzhou310018China State Key Laboratory of Public Big Data Guizhou UniversityGuiyang550025China School of Computer Science and Technology(School of Artificial Intelligence) Zhejiang Sci-Tech UniversityHangzhou310018China School of Computer Science(School of Cyber Science and Engineering) Nanjing University of Information Science and TechnologyNanjing210044China

As smart grid technology rapidly advances,the vast amount of user data collected by smart meter presents significant challenges in data security and privacy *** research emphasizes data security and user privacy concerns within smart ***,existing methods struggle with efficiency and security when processing large-scale *** efficient data processing with stringent privacy protection during data aggregation in smart grids remains an urgent *** paper proposes an AI-based multi-type data aggregation method designed to enhance aggregation efficiency and security by standardizing and normalizing various data *** approach optimizes data preprocessing,integrates Long Short-Term Memory(LSTM)networks for handling time-series data,and employs homomorphic encryption to safeguard user *** also explores the application of Boneh Lynn Shacham(BLS)signatures for user *** proposed scheme’s efficiency,security,and privacy protection capabilities are validated through rigorous security proofs and experimental analysis.

关键词： Smart grid data security privacy protection artificial intelligence data aggregation

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