Kinetics, Thermodynamics and Novel Technologies in Steelmaking Engineering

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 3126

Special Issue Editor


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Guest Editor
Technology Center, UFF–Federal Fluminense University, 27255-125 Volta Redonda, RJ, Brasil
Interests: steelmaking; ironmaking; welding; steel heat treatment; residual stresses
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Special Issue Information

Dear Colleagues,

We aim to publish a Special Issue of the journal that presents a set of themed articles on “Kinetics, Thermodynamics, and Novel Technologies in Steelmaking Engineering”. The focus will be on the actual status and developments of the theories and practices applied to steelmaking processes and engineering to discuss new insights into ongoing technologies. Special interest is on the analysis of new approaches aiming to enhance the effectiveness, clean energy sources, and raw materials availability. Our Special Issue will cover relevant topics of interest, such as:

  • Raw materials selection for green steel;
  • Kinetic and thermodynamic modeling applied to sintering, blast furnace, and Shaf furnace processes;
  • Modeling and innovative practices applied to steelmaking processes;
  • CALPHAD and kinetics modeling approaches of ironmaking and steelmaking processes;
  • Big Data, expert systems, and artificial intelligence approaches for process analysis, control, and new developments;
  • New alternative processes for net zero carbon of ironmaking and steelmaking processes;
  • Industrial trials aiming at sustainable developments on the green ironmaking steelmaking process chain.

We look forward to receiving your contributions.

Prof. Dr. Jose Adilson De Castro
Guest Editor

Manuscript Submission Information

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Keywords

  • raw materials
  • shaft furnace
  • sintering
  • self-reducing
  • blast furnace
  • LD
  • BOF
  • EOF
  • DRI
  • net-zero carbon

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Published Papers (1 paper)

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Research

21 pages, 5105 KiB  
Article
A Numerical Study of Scenarios for the Substitution of Pulverized Coal Injection by Blast Furnace Gas Enriched by Hydrogen and Oxygen Aiming at a Reduction in CO2 Emissions in the Blast Furnace Process
by Jose Adilson de Castro, Giulio Antunes de Medeiros, Leonardo Martins da Silva, Ivaldo Leão Ferreira, Marcos Flavio de Campos and Elizabeth Mendes de Oliveira
Metals 2023, 13(5), 927; https://doi.org/10.3390/met13050927 - 10 May 2023
Cited by 6 | Viewed by 2806
Abstract
A numerical simulation procedure is proposed for analyzing the partial replacement of pulverized coal injection by hydrogen, oxygen, and blast furnace gas (BFG) injections mixed with pulverized coal (PCI) within the tuyeres of large blast furnaces. The massive use of hydrogen-rich gas is [...] Read more.
A numerical simulation procedure is proposed for analyzing the partial replacement of pulverized coal injection by hydrogen, oxygen, and blast furnace gas (BFG) injections mixed with pulverized coal (PCI) within the tuyeres of large blast furnaces. The massive use of hydrogen-rich gas is extremely interesting for ironmaking blast furnaces in the context of net-zero carbon hot metal production. Likewise, this new approach allows for increasing productivity and for reducing the specific emissions of carbon dioxide toward a net-zero carbon ironmaking technology. Nevertheless, the mixture of pulverized coal injection and gas injection is a complex technology. In addition to the impact on chemical reactions and energy exchange, the internal temperature and gas flow patterns can also change drastically. With a view to assessing the state of the furnace in this complex operation, a comprehensive mathematical model utilizing multiphase theory was developed. The model simultaneously handles bulk solids (sinter, pellets, small coke, granular coke, and also iron ore), gas, liquid metal and slag, and coal powder phases. The associated conservation equations take into account momentum, mass, chemical species, and energy while being discretized and solved using finite volume techniques. The numerical model was validated against the reference operating conditions using 220 kg per ton of pig iron (kg/tHM) of pulverized coal. Therefore, the combined injection of different concentrations of fuel hydrogen, blast furnace gas, and oxygen was simulated for replacing 40, 60, and 80 kg/tHM of coal injection. Theoretical analysis showed that the best scenario with stable operation conditions could be achieved with a productivity increase of 20% corresponding to a CO2 reduction of 15% and 60 kg/tHM of PCI replacement. Full article
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