Article
Engineering, Chemical
Pedro P. S. Cavalcanti, Horacio A. Petit, Anderson D. Thomazini, Rodrigo M. de Carvalho, Luis Marcelo Tavares
Summary: The study investigates mechanical degradation of iron ore pellets using a pneumatic gun device, finding that body breakage probability is influenced by the normal component of impact, and mass loss due to surface breakage can be well described by a model. Parameters affecting pellet breakage were estimated from data, and the model was validated successfully.
Article
Metallurgy & Metallurgical Engineering
Yingjie Fan, Yunhao Zhang, Zhichao Li, Yifan Chai, Yici Wang, Guoping Luo, Shengli An
Summary: This study investigates the swelling behavior of pellets prepared from Bayan Obo iron ore concentrate during the reduction process, providing valuable insights into the reduction swelling theory of pellets prepared from complex intergrowth minerals.
IRONMAKING & STEELMAKING
(2021)
Article
Engineering, Chemical
Horacio A. Petit, Avneer Philippe, Anderson D. Thomazini, Luis Marcelo Tavares
Summary: This study investigates the impact-induced breakage of fragments of iron ore pellets. The results show that fragments are more prone to surface breakage and their strength increases as their size decreases.
Article
Materials Science, Multidisciplinary
Amit Kumar Singh, Om Prakash Sinha, Randhir Singh
Summary: The potential of fast-growing and high-carbon yielding hardwood biomasses, such as Acacia, Albizia, and Leucaena, as reductants in ironmaking has been explored. Charcoals derived from these biomasses, specifically W1 and W3, were found to be better reductants than charcoal from W2 in composite pellets with iron ore. The use of charcoal, which is CO2 neutral and more reactive than coal, proves to be a better alternative in the reduction process of ironmaking.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Quentin Fradet, Mohammed Liaket Ali, Uwe Riedel
Summary: An improved porous solid model is proposed to address the issues in the reduction process of iron ore pellets, and it is integrated into a computational fluid dynamics (CFD) environment. The model offers wide flexibility and can be used for simulating industrial-scale reactors.
STEEL RESEARCH INTERNATIONAL
(2022)
Article
Engineering, Chemical
Shuai Wang, Yufeng Guo, Jianjun Fan, Zhuang Yang, Feng Chen, Lingzhi Yang, Yajing Liu
Summary: This study investigated the deposit issues in iron ore fluxed pellet production, finding that a high proportion of liquid phases in the deposits led to severe deposit formation during the production process. The composition of bonding phases in the deposits changed significantly with an increase in CaO content in the iron ore pellets, affecting the formation of bonding phases and leading to deposit issues.
Article
Materials Science, Multidisciplinary
A. Sarkar, V. Chavan, N. N. Pai, A. Prakash, B. Hazra, P. Raut, D. Sunilkumar, C. Sivananda, S. Kundu, S. Nag, S. Basu, I. Samajdar
Summary: This study conducted simulated reduction studies on twenty different iron ore pellets and found that the reduction time period was related to the final iron and Wustite ratio. The reduction time period also scaled with microstructural parameters such as porosity, grain size, crystallographic texture, and dislocation density. It was suggested that dislocation density represented the controlling feature for the reduction of iron ore pellets.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Yuri Korobeinikov, Amogh Meshram, Christopher Harris, Olexandr Kovtun, Joe Govro, Ronald J. O'Malley, Olena Volkova, Seetharaman Sridhar
Summary: Direct reduction of iron ore (DRI) has gained attention as a way to decarbonize industrial processes. This study focuses on the effects of gas mixtures and temperature on the reduction kinetics of hematite iron-ore pellets. The results show that slower reduction rates lead to larger pores, offsetting the influence of gas composition. Higher temperatures result in coarser pores and higher porosity. An increase in CO content in the gas mix also leads to larger pore size.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Energy & Fuels
Raj Kumar Dishwar, Om Prakash Sinha
Summary: The reduction behavior of high flux hardened iron ore pellets of different basicity levels was studied at different temperatures, with the best-fit kinetic model and activation energy calculated. It was found that pellets with higher basicity levels had lower activation energies after reduction in a coal bed, making them suitable for steelmaking in Electric arc furnace/Linz-Donawitz Converter.
Article
Materials Science, Multidisciplinary
Damodar S. Reddy, Hao-Hsun Chang, Meng -Yu Tsai, In-Gann Chen, Keng-Tung Wu, Shih-Hsien Liu
Summary: This study investigated the use of different reducing agents in iron-ore composite pellets, including coal, spent mushroom substrate, torrefied mushroom substrate, and de-ashed torrefied mushroom substrate. The torrefied mushroom pellets exhibited significant swelling and softening behavior, while coal and de-ashed torrefied pellets did not swell. Additionally, the addition of alkali metal oxides and soda lime glass to de-ashed torrefied pellets resulted in increased swelling and decreased softening temperature.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Feiyu Meng, Yang Ou, Ke Li, Yongbin Yang, Qiang Zhong, Qian Li, Tao Jiang
Summary: It was found that using a humic substance-based binder as a substitution for bentonite in the production of iron ore pellets is effective, but requires a longer preheating time. The emission of humic substance interfered with the oxidation process of the pellets, resulting in a delay in the transformation of magnetite phase into hematite.
Article
Engineering, Chemical
Pallishree Prusti, Kashinath Barik, Nilima Dash, S. K. Biswal, B. C. Meikap
Summary: The utilization of limestone and dolomite as flux materials in pelletization of Indian goethitic-hematite iron ore significantly improves process efficiency. The high kaolinite content in the ore contributes to high LOI, affecting pellet quality. Addition of limestone and dolomite enhances pellet properties, reducing swelling index and increasing strength.
Article
Computer Science, Artificial Intelligence
Arya Jyoti Deo, Animesh Sahoo, Santosh Kumar Behera, Debi Prasad Das
Summary: This paper proposes a machine learning algorithm for estimating the size class of iron ore pellets during their production. By using image processing, the overall size estimate of the pellets in production can be obtained qualitatively. Results of experiments indicate that the operating state of the pelletization disc can be detected with sufficient accuracy by acquiring images from the inside area of the disc.
NEURAL COMPUTING & APPLICATIONS
(2022)
Article
Engineering, Chemical
Kashinath Barik, Pallishree Prusti, Shatrughan Soren, B. C. Meikap, S. K. Biswal
Summary: This study focuses on the utilization of iron ore slimes without beneficiation by blending with high-grade fines to make iron ore pellets. The properties of the pellets and the mineralogy were investigated, and an empirical correlation was developed to predict the pellet properties based on feed mineralogical data.
Article
Materials Science, Multidisciplinary
Qianqian Wang, Shujuan Dai, Yue Xi
Summary: The most suitable particle size of the hydromagnesite ore for calcination is -2 mm, and complete decomposition of the ore can be achieved at a calcination temperature of 900 degrees C for 3 hours. Increasing the calcination temperature and holding time leads to higher loss on ignition and MgO grade of the light-burned magnesia. With the increase in temperature, the crystal form of periclase becomes perfect and the crystal grain size increases.
Article
Engineering, Chemical
Yuting Zhuo, Yansong Shen
Article
Engineering, Chemical
Zhouzun Xie, Yansong Shen, Kazuya Takabatake, Akira Yamaguchi, Mikio Sakai
Article
Energy & Fuels
Yuting Zhuo, Yansong Shen
Article
Energy & Fuels
Yiran Liu, Yansong Shen
Article
Engineering, Chemical
Chenxi Zhang, Shuyue Li, Zhiguo Wang, Yansong Shen, Fei Wei
Article
Engineering, Chemical
Jiaxin Cui, Qinfu Hou, Yansong Shen
Article
Engineering, Chemical
Yuanhe Yue, Tianyu Wang, Yansong Shen
Article
Engineering, Chemical
Shuyue Li, Yansong Shen
ADVANCED POWDER TECHNOLOGY
(2020)
Article
Chemistry, Analytical
Sikai Zhao, Yanbai Shen, Pengfei Zhou, Fulai Hao, Xiangyu Xu, Shuling Gao, Dezhou Wei, Yuxin Ao, Yansong Shen
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Materials Science, Multidisciplinary
Yiran Liu, Zhongjie Hu, Yansong Shen
Summary: This study improved a CFD model to investigate the co-injection of hydrogen/coal in ironmaking blast furnaces, showing that increasing hydrogen injection affects coal combustion characteristics. The model provides a tool for designing and optimizing the co-injection of hydrogen and coal.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2021)
Article
Engineering, Environmental
Shuyue Li, Yansong Shen
Summary: A versatile mathematical approach is developed for monitoring gas-solid flow systems' internal states and process control, combining a CFD model and process controller simulation for real-time control of complex systems. This method proves effective in collaborative simulation of microscale flow details and macroscale process controller response.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Shuyue Li, Yansong Shen
Summary: This study used a multi-fluid model to investigate the gas-solid hydrodynamics in a CDCL combustion unit, revealing that the solid circulation rate is controlled by the gas flow rate, higher combustor gas velocity reduces system pressure, and increased L-valve gas velocity affects local pressure.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
Xiaobing Yu, Yansong Shen
Summary: A transient-state BF model is developed to describe dynamic in-furnace phenomena, capturing the time-evolution of flow, thermal, and chemical behaviors. Application of the model to an industry-scale blast furnace reveals significant changes in reacting flow after hot burden charging, with notable impact on furnace productivity in the initial 8-10 hours.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Energy & Fuels
Shuai Wang, Yansong Shen
Summary: A CFD-DEM reacting model with thermochemical sub-models was developed to study gas-solid reacting flow in an ironmaking blast furnace. Simulation results indicated significant impacts of key operating parameters on raceway evolution, affecting cavity depth and CO production.
Article
Engineering, Chemical
Shuang Song, Liangwan Rong, Kejun Dong, Xuefei Liu, Pierre Le-Clech, Yansong Shen
Summary: The study developed a numerical model to simulate fluid flow through an asymmetric ceramic MF membrane and found that pore size and porosity are key parameters determining membrane permeability. By deriving a new intrinsic permeability function, the model can accurately predict membrane permeability.
JOURNAL OF MEMBRANE SCIENCE
(2022)