Article
Metallurgy & Metallurgical Engineering
Huiqing Tang, Zhu Liu, Zhancheng Guo
Summary: Partial replacement of coal and coke by biomass/biochar in blast furnace ironmaking can reduce CO2 emissions. Numerical investigations show that in blast furnace operation with biochar composite briquette (BCB) charging, iron-oxide in BCB is fully reduced, but the overall gasification degree of BCB biochar decreases with an increase in BCB charging ratio.
ISIJ INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Qiang Wang, Zhu Liu, Huiqing Tang, Zhancheng Guo
Summary: Replacing 10% ore with CCB can efficiently improve BF operation for coke saving. The CCB reached a full iron-oxide reduction above the cohesive zone and a carbon conversion of 85% during charging operation.
Article
Metallurgy & Metallurgical Engineering
Huiqing Tang, Yanjun Sun, Zhi Yu
Summary: This study investigated the reaction behavior of biochar composite briquette (BCB) in an actual blast furnace (BF) by modeling. The results show that the reactions of BCB mainly included three stages and the self-reduction of BCB had a positive influence on lowering the temperature level of thermal reserve zone.
CANADIAN METALLURGICAL QUARTERLY
(2022)
Article
Engineering, Chemical
Huiqing Tang, Yanjun Sun, Tao Rong, Zhancheng Guo
Summary: In this research, a carbon composite briquette (CCB) for blast furnace (BF) application was prepared, and a reaction model of CCB in BF was developed. The experimental and simulation results showed that CCB underwent fast self-reduction under simulated BF conditions, and it was preferred to charge CCB near the mid-radius region in actual BF. The CCB reaction behavior in BF was divided into five stages, with CCB becoming effective for BF energy saving after 1000 K.
Article
Green & Sustainable Science & Technology
Wenhe Wu, Rong Zhu, Guangsheng Wei, Kai Dong, Juanjuan Jiang, Bin Chen
Summary: Ironmaking and steelmaking industries are major sources of CO2 emissions, but using recycled CO2 gas in blast furnaces can help reduce emissions. The reaction of CO2 with carbon can produce CO gas, which further undergoes oxidation to CO2. However, this process may cool the furnace and impact its operation, requiring heat supplementation methods to offset the heat loss.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Ziguang Zhao, Xiaobing Yu, Yansong Shen
Summary: This study investigates the impacts of wet burden charging on in-furnace phenomena of ironmaking blast furnaces using a transient BF model. The results show that charging wet burden significantly increases the coke rate and decreases the top gas temperature. Remedies for heavy rain weather are also studied, indicating that reducing oxygen enrichment and reusing dry burden can restore BF performance.
Article
Engineering, Chemical
Ping Wang, Chaoqiang Wang, Hongtao Wang, Hongming Long, Tianbao Zhou
Summary: This study experimentally investigated the effects of SiO2, CaO, and basicity on the staged reduction of fluxed pellets. The results showed that increasing SiO2 decreased the reduction degree, while increasing CaO accelerated the reduction process. The basicity also had a significant impact on the swelling performance of the pellets.
Article
Automation & Control Systems
Junfang Li, Chunjie Yang, Shujia Xie, Yuxuan Li, Zhiqi Su
Summary: In order to optimize the blast furnace ironmaking process, a transfer optimization framework is proposed. It consists of a two-stage generation mapping algorithm for transforming constrained to unconstrained optimization, and an improved grey wolf optimizer algorithm for locating optimal solutions. The method's effectiveness is validated through numerical tests and practical data.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Energy & Fuels
Navid Aminnia, Prasad Adhav, Fateme Darlik, Muhammad Mashhood, Sina Hassanzadeh Saraei, Xavier Besseron, Bernhard Peters
Summary: The study shows that combining Computational Fluid Dynamics (CFD) with Discrete Element Method (DEM) can accurately predict the size of the raceway in a blast furnace (BF). The results also indicate that a higher blast flow rate leads to a higher reaction rate and a larger raceway.
Article
Energy & Fuels
Manuel Bailera
Summary: This paper evaluates the injection of different types of syngas in air-blown blast furnaces, oxygen blast furnaces, and advanced oxygen blast furnaces. An Aspen Plus model based on the extended operating line methodology is used for simulation. Seven key performance indicators are defined for the study. The results show that the lowest net CO2 emissions are achieved in oxygen blast furnace with injection of syngas from reverse water-gas shift reaction.
Article
Environmental Sciences
Xianmei Liu, Rui Peng, Caiquan Bai, Yuanying Chi, Hao Li, Pibin Guo
Summary: This study evaluates the environmental impact of China's iron and steel industry and explores deep decarbonisation pathways. The blast furnace-basic oxygen furnace process has a significant contribution to global warming potential, while converter negative energy steelmaking technology has the highest energy savings. Technological improvement can significantly reduce CO2 emissions in the industry.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Metallurgy & Metallurgical Engineering
Debanga Nandan Mondal, Han Wei, Yaowei Yu, Henrik Saxen
Summary: This study analyzes the thermal and flow conditions in the upper shaft of a blast furnace using computational fluid dynamics combined with the discrete element method. The results show that charging significantly affects the gas and temperature distribution in the furnace, and discuss the implications of the findings.
STEEL RESEARCH INTERNATIONAL
(2022)
Review
Chemistry, Physical
Zhiyuan Fan, S. Julio Friedmann
Summary: With the urgency to transition to a net-zero CO2 economy, governments and industries are focusing on decarbonizing hard-to-abate sectors like steel making. Current decarbonization technologies have limitations, and achieving deep decarbonization in the iron and steel industry will require a combination of factors including cost and technical maturity.
Review
Energy & Fuels
Behnaz Rahmatmand, Arash Tahmasebi, Hannah Lomas, Tom Honeyands, Pramod Koshy, Kim Hockings, Apsara Jayasekara
Summary: Blast furnace technology remains the main ironmaking route, accounting for 70% of global share. Reducing fossil carbon consumption and CO2 emissions in blast furnace operations is crucial for decarbonizing steelmaking. Various solutions such as introducing renewable carbon-based materials, using hydrogen-enriched reducing gases, oxygen enrichment, and carbon capture and storage/utilization have been considered. Improving the hydrogen-to-carbon replacement ratio is key to enhancing the sustainability of blast furnace operations. This paper reviews the impact of alternative reducing agents on coke gasification behavior, degradation mechanism, and consumption rate in blast furnaces.
Article
Thermodynamics
Cuiliu Zhang, Jianliang Zhang, Anyang Zheng, Runsheng Xu, Guoli Jia, Jinfeng Zhu
Summary: This study compares the characteristics of tuyere and raceway with hydrogen, natural gas, coke oven gas, and recycling top gas injection in blast furnace ironmaking. The simulation results show that coke oven gas combusts at the nearest point after leaving the gas lance, the gas velocity is highest at the tuyere, and the gas penetrability is strongest in all four cases. The highest maximum temperature is generated by combustion along the pulverized coal plume when recycling top gas and natural gas are injected.
Article
Engineering, Chemical
Yiran Liu, Jennifer Curtis, Yansong Shen
Article
Engineering, Chemical
Xiaobing Yu, Yansong Shen
Article
Engineering, Chemical
Shuyue Li, Yansong Shen
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
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
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)
