Article
Chemistry, Physical
Shaowu Jiu, Bo Zhao, Chao Yang, Yanxin Chen, Fuan Cheng
Summary: Upgrading and utilizing low-grade iron ore is important for improving iron ore resource supply security. This study investigated the reaction mechanism and kinetics of Daxigou siderite using a thermal analysis-infrared analysis-in-situ IR method. The results show that magnetite can be formed by decomposing iron carbonate in siderite under certain conditions. Magnetization roasting at specific temperatures and time can achieve high magnetic conversion rate of the iron minerals in the siderite. A beneficiation process was adopted to obtain high-grade concentrate.
Article
Green & Sustainable Science & Technology
Chao Chen, Yuexin Han, Yushu Zhang, Yachuan Liu, Yingzhi Liu
Summary: This paper studies the efficient utilization of mixed iron ore with siderite and hematite, and proposes a method of suspension magnetization roasting followed by low-intensity magnetic separation. The results show that this method can achieve high iron grade and recovery rate. These findings provide reference for the development and utilization of mixed iron ore.
Article
Chemistry, Physical
Yanxin Chen, Chao Yang, Shaowu Jiu, Bo Zhao, Qiang Song
Summary: This study investigated the magnetic properties of roasted siderite ores and analyzed their washability under weak-magnetic-field conditions. The findings provide important reference for the development and application of siderite suspension magnetization roasting technology.
Article
Materials Science, Multidisciplinary
Dingzheng Wang, Jian Pan, Deqing Zhu, Zhengqi Guo, Congcong Yang, Zhuang Yuan
Summary: In this study, a new process for separating and recovering iron from siderite ore with high magnesium and manganese was developed, achieving a high-grade iron concentrate through pre-oxidation and magnetization roasting. Pre-oxidation improved the reduction efficiency in magnetization roasting, leading to the removal of most gangue minerals while retaining manganese and some magnesium in the final concentrate.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Chemical
Shaowu Jiu, Mingkang Lin, Bo Zhao, Yanxin Chen, Chao Yang
Summary: Realizing the large-scale development and utilization of siderite, a difficult iron ore reserve, has great practical significance in ensuring the supply of iron ore resources. Therefore, a new in-house conveyor bed magnetization roasting-dry cooling process was pilot-tested using low-grade siderite from the Daxigou iron ore mine.
Article
Chemistry, Multidisciplinary
Qiang Zhang, Yongsheng Sun, Shuai Wang, Yuexin Han, Yanjun Li, Peng Gao
Summary: The growth behavior and kinetics of magnetite during the magnetization roasting of hematite with different particle sizes were investigated. The results showed that magnetite exhibited similar growth trends at different roasting temperatures, and increasing the roasting temperature facilitated the growth of magnetite. The growth process of magnetite could be divided into induction period and growth period, and magnetization roasting of hematite with a smaller particle size could be completed in a shorter time.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Metallurgy & Metallurgical Engineering
Zhang Qi, Sun Yong-sheng, Qin Yong-hong, Gao Peng, Yuan Shuai
Summary: This study investigates the in-situ kinetics and mechanism of siderite during suspension magnetization roasting (SMR) to improve its selective conversion to magnetite and CO, enriching the theoretical system of green SMR. The results show that siderite can be effectively converted to magnetite and CO within a certain temperature range, while the physical properties of the product are improved.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Engineering, Chemical
Xiao Liu, Wentao Zhou, Xiangai Guan
Summary: This study systematically calculated and analyzed the possible chemical reactions in the process of iron extraction from red mud by suspension magnetization roasting, and investigated the isothermal kinetic analysis of reduction reaction of the Na2OFe2O3-CO system. The results showed that Fe3O4 would be over-reduced to FeO or Fe easily if the CO concentration was high. The best kinetics model for the Na2O-Fe2O3-CO system was the D6 model, and the addition of sodium carbonate hindered the reduction process of hematite. This research provides important insights into the efficient and clean reduction of hematite in red mud.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Wenbo Li, Xiao Liu, Dongquan Liu, Yuexin Han
Summary: In this paper, magnetization roasting low-intensity magnetic separation was conducted to separate titanium and vanadium from an Australian hematite concentrate. The results showed that high-grade iron concentrate and iron tailings with desirable recovery rates could be obtained under optimal roasting conditions. XRD analysis and magnetic analysis confirmed the transformation of minerals during magnetization roasting, enabling the easy separation of ilmenite and vanadium through magnetic separation.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Shaochun Hou, Weiwei Wang, Bo Zhang, Wenjun Li, Chunlei Guo, Qiang Li, Erdou Li
Summary: This article investigates the composition and separation methods of LIMS tailings, identifying the main mineral phases and gangue species. Magnetization roasting-magnetic separation is proposed as an effective method for recovering iron and rare earth from the tailings. Experimental results show that with optimized parameters, the iron grade and recovery rate in the magnetic concentrate can reach satisfactory levels. Additionally, the rare earth can be effectively extracted and separated after subsequent flotation-leaching.
Article
Materials Science, Multidisciplinary
Qiang Zhang, Yongsheng Sun, Yuexin Han, Yanjun Li, Peng Gao
Summary: In order to develop limonite and reduce CO2 emissions, siderite is proposed as a clean reductant for suspension magnetization roasting (SMR) of limonite. The study successfully achieved the conversion of weak magnetic minerals to strong magnetic minerals through SMR, enabling the recovery of iron via magnetic separation. The use of siderite as a reductant in SMR has great potential and is encouraged.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Haoyan Sun, Zheng Zou, Meiju Zhang, Dong Yan
Summary: This study proposes a fluidized preoxidation-low-temperature reduction magnetization roasting process for the utilization of low-grade refractory siderite-containing iron ore. Through experiments, it was found that the γ-Fe2O3 generated during air oxidation roasting would further convert into weakly magnetic FeO. Stable magnetite can only be obtained through reduction of γ-Fe2O3 at low temperatures. The optimal process parameters for fluidized magnetization roasting were determined to be preoxidation at 610°C for 2.5 min, followed by reduction at 450°C for 5 min. The iron ore concentrate obtained through weak magnetic separation had a grade of 62.0wt% and an iron recovery rate of 88.36%. Compared to conventional direct reduction magnetization roasting, the weak magnetic separation greatly improved the iron recovery by 34.33%. The proposed roasting process enables efficient utilization of low-grade refractory siderite-containing iron ore without wustite generation, and it is not limited by the proportion of siderite and hematite in the ore.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Qiang Zhang, Yongsheng Sun, Yuexin Han, Peng Gao, Yanjun Li
Summary: Through experimental analysis, it was found that the heating rate and roasting temperature play a crucial role in the magnetization roasting process of siderite ore, and the most probable reaction models were determined. Phase transformation and decomposition occurred during the roasting process, ultimately transforming siderite into strongly magnetic magnetite.
MINING METALLURGY & EXPLORATION
(2021)
Article
Engineering, Chemical
Pengfei Liu, Shuai Yuan, Yongsheng Sun, Yuexin Han, Peng Gao, Yanjun Li
Summary: In this study, suspension magnetization roasting and low-intensity magnetic separation were used to process ferromanganese ore, resulting in the production of magnetic and nonmagnetic products with high-grade iron and manganese contents respectively. The analysis of the process mechanism showed that the treated products had enhanced magnetic properties and a rougher and more porous surface. This method provides a way for the recycling and utilization of ferromanganese ore.
Article
Metallurgy & Metallurgical Engineering
Zhou Wen-tao, Sun Yong-sheng, Han Yue-xin, Gao Peng, Li Yan-jun
Summary: In this study, a microwave-assisted suspension magnetization roasting technology was proposed to recover and utilize oolitic hematite. The results showed that microwave pretreatment increased the iron grade and recovery of the magnetic concentrate. Microcracks formed during pretreatment promoted the selective transformation of weak magnetic hematite into strong magnetic magnetite.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Energy & Fuels
Shuoshuo Tian, Yuezhong Di, Min Dai, Weiqiang Chen, Qi Zhang
Summary: The global aluminum industry has undergone significant changes over the past decade, with China emerging as a major producer. A comprehensive assessment framework was developed to explore energy conservation and CO2 emission reduction in China's aluminum industry. Results show that China's aluminum demand will continue to rise, but achieving a circular economy in the short term is challenging. Technology promotion and structural adjustments will gradually reduce energy consumption and CO2 emissions.
Article
Construction & Building Technology
Zhenbang Guo, Xiaogang Sun, Xiwei Zhang, Jingping Qiu, Haiqiang Jiang, Yingliang Zhao, Pinqi Wu, Qi Zhang
Summary: This study focuses on the effect of superplasticizer on the rheological properties and thixotropic properties of superfine-tailings cemented paste backfill, and proposes an improved dynamic yield stress model. It is found that the addition of SP affects the characteristic time of destructuration, and shear stress can be divided into three stages under steady-state shearing. An exponential relationship is observed between the rheological parameters of SCPB and WFT.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Zhidong Tang, Qi Zhang, Yongsheng Sun, Peng Gao, Yuexin Han
Summary: This study investigated the treatment of flotation tailings and identified the best parameters to improve the grade and recovery of iron concentrate. The results showed that the HSMR process effectively transformed weakly magnetic hematite into highly magnetic magnetite, optimizing particle structure and reducing energy consumption. This pilot case provides insight into the potential of HSMR for green and low-carbon development in the iron and steel industry.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Electrical & Electronic
Qi Zhang, Hailian Liu, Bin Li, Fan Zhang, Xin Yan, Xuenan Zhang, Fang Wang, Tonglei Cheng
Summary: A dual-channel surface plasmon resonance (SPR) sensor based on hollow-core fiber (HCF) is proposed for simultaneous measurement of liquid refractive index (RI) and ambient temperature. The sensor achieves high sensitivity in a relatively wide measurement range by using the dual-wavelength matrix method to solve the cross sensitivity of multi-parameter measurement.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shuai Yuan, Ruofeng Wang, Qi Zhang, Yanjun Li, Peng Gao
Summary: By using suspension magnetizing roasting - magnetic separation technology, iron was successfully extracted from fine-grained complex hematite ore. The optimized conditions were a roasting temperature of 500 degrees Celsius, roasting time of 12 minutes, reductant concentration of 30%, and total gas flow of 200 mL/min. Analysis showed that hematite was transformed into magnetite during roasting, improving the porous structure of the product and enhancing internal gas diffusion and reduction rate.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Haiqiang Jiang, Lei Ren, Qi Zhang, Jingru Zheng, Liang Cui
Summary: The concentration of activator/silica modulus and curing temperature are important factors affecting the engineering performance of alkali-activated slag-based cemented paste backfill (AAS-CPB). The strength of AAS-CPB is more sensitive to changes in curing temperature and consistently higher than that of CPB made of OPC. The strength evolution of AAS-CPB is strongly influenced by the combined effect of curing temperature and activator concentration/silica modulus.
Article
Green & Sustainable Science & Technology
Peng Wang, Shen Zhao, Tao Dai, Kun Peng, Qi Zhang, Jiashuo Li, Wei-Qiang Chen
Summary: This study explores the regional emission performance of steel production across 44 countries and 5 regions from 2000 to 2015, comparing physical indicators such as CO2 emission, energy use, and carbon intensity. The results show a significant increase in global CO2 emission associated with steel production, indicating a worsening environmental performance. Both developed and developing nations experienced an increase in carbon intensity, highlighting the need to address regional disparities and inequalities in global decarbonization strategies for the steel industry.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Engineering, Chemical
Huihui Song, Qi Zhang, Defeng Hu, Zhongqiao Sun, Yide Han, Hao Meng, Ting Sun, Xia Zhang
Summary: In this study, a ternary hollow heterostructure (MIL-68/In2S3/ZnIn2S4) was designed and constructed through two-step in-situ growing procedures. The resulting heterostructure exhibited excellent photocatalytic activity and stability for visible-light induced hydrogen generation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Industrial
Qi Zhang, Shixin Liu, MengChu Zhou
Summary: This study formulates and investigates a steel grade design problem (SGDP) that arises from the production process of steelmaking continuous casting. For the first time, uncertain yield and demand are considered in the SGDP and a two-stage robust optimization model is constructed accordingly. An enhanced column-and-constraint generation algorithm is proposed to obtain high-quality solutions. The algorithm is tested on extensive instances based on actual production rules and shows effectiveness in solving large-scale SGDPs, outperforming a commonly-used standard algorithm.
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
(2023)
Article
Geochemistry & Geophysics
Zhe Bai, Yuexin Han, Jianping Jin, Yongsheng Sun, Qi Zhang
Summary: This study investigated the transformation behavior of V-bearing sericite during fluidized roasting using experimental detections and density functional theory (DFT) calculations. The results showed that dehydroxylation was the main reaction during roasting and played a determining factor in the destruction of sericite crystals and vanadium release.
Article
Chemistry, Multidisciplinary
Qi Zhang, Ruofei Ma, Yingzhi Zhang, Jing Zhao, Yue Wang, Zhangrun Xu
Summary: A ratiometric SERS biosensor was developed to detect breast cancer cell-derived exosomes, providing accurate identification of cancer patients and healthy individuals in clinical serum samples.
Article
Thermodynamics
Sheng Xie, Jingshu Zhang, Datao Shi, Qi Zhang
Summary: The multi-energy system in iron and steel plants poses challenges in energy distribution and management due to its strong coupling characteristic. This study establishes a multi-energy and multi-objective mixed integer non-linear programming model to optimize the energy system under the water-energy-carbon nexus. The model considers the coupling of gas-steam-electricity and includes multiple objectives such as economic performance, CO2 emissions, water generation, and global energy efficiency. The results show that the studied iron and steel plant has significant potential in reducing economic cost, emission mitigation, improving system water production, and enhancing global energy efficiency, thus helping achieve carbon peak and carbon neutrality targets.
APPLIED THERMAL ENGINEERING
(2023)
Review
Environmental Studies
Jingshu Zhang, Jialin Shen, Lisong Xu, Qi Zhang
Summary: China aims to peak CO2 emissions by 2030 and achieve carbon neutrality by 2060. The steel industry, accounting for 13% of China's total energy consumption and 15% of CO2 emissions, needs to adopt measures to cut energy consumption and reduce CO2 emissions. This paper analyzes the CO2 emission reduction path of the steel industry towards carbon neutrality, emphasizing the importance of industrial structure, material efficiency, energy efficiency, and low-carbon technologies. Collaboration and standardization in carbon accounting and carbon trading are also essential for effective carbon emission management.
ENVIRONMENTAL IMPACT ASSESSMENT REVIEW
(2023)
Article
Engineering, Electrical & Electronic
Hailian Liu, Ning Yang, Qi Zhang, Fang Wang, Xin Yan, Xuenan Zhang, Tonglei Cheng
Summary: In this work, a high-performance wearable sensor with excellent flexibility was fabricated by dip-coating MXene material on a polyester fiber substrate and depositing silver nanoparticles. This sensor shows good response to temperature and pressure/strain signals, high-temperature sensitivity, fast response and recovery time to pressure, low-pressure detection limit, and good cycling stability.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Bin Li, Fan Zhang, Wei Liu, Xiaoyu Chen, Yuanhongliu Gao, Qi Zhang, Xin Yan, Fang Wang, Xuenan Zhang, Takenobu Suzuki, Yasutake Ohishi, Tonglei Cheng
Summary: In this study, a fluorescence intensity ratio (FIR) temperature sensor based on ZnS:Cu was proposed to address the issues of long-term dependence on rare-earth (RE) ions and insufficient stability in a fluorescent optical fiber temperature sensor. The sensor showed excellent linear response, stability, and repeatability in the tested temperature range, indicating its potential in temperature sensing applications.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
