THEORETICAL ANALYSIS OF THE KINETICS OF COAL PARTICLE AGGLOMERATION THROUGH COMPUTATIONAL MATHEMATICAL MODELS FOR COKE PRODUCTIONDimas Coura1; Vinicius Magalhães2; Denilson Gomes3; Paulo Assis2
1IFMG Campus Ouro, Branco, Conselheiro Lafaiete, Brazil; 2Federal University of Ouro Preto, Ouro Preto, Brazil; 3UNIFASAR - Centro Universitário Santa Rita, Conselheiro Lafaiete, BrazilPAPER: 172/Composite/Regular (Oral) OS
SCHEDULED: 14:45/Thu. 20 Nov. 2025/Dusit 1
ABSTRACT:The steel industry is responsible for 5% of total energy consumption and contributes 6% of CO2 emissions worldwide [1]. Brazil produced 31,869 million tons of steel in 2023. The industrial park has 31 plants, 15 of which are integrated, 7 of which are coking plants, meaning that they consume around 74% of all the coal imported by the country [2].
Mineral coal is the main source of energy still in use in modern society. This input is exported by several countries around the world, such as Australia and the USA, of which Japan, India and China are major importers of the main input for reducing iron ore. A reactor is used to make steel and is called a blast furnace [3].
In the steel chain, 40 to 50% of the cost of steel is in the coal to be used in the coking plant and the constant search to optimize this commodity directly reflects on the competitiveness of the business, which is why various parameters are evaluated in the composition of the coal and subsequently the properties of the coke [4-5].
The main objective of this work is to present a proposed predictive model using combinatorial mathematical analysis and probability, where particles from different coals interact within the coke oven. The model shows promise for the proposed mixtures and could be used as a tool to improve the quality of the coke produced.
REFERENCES:[1] ZHAO, J. et al. Review of green and low-carbon ironmaking technology. Ironmaking and Steelmaking, v. 47, n. 3, p. 296-306, 2020.
[2] Industry data (2019, June 21). Brazil Steel Institute. https://acobrasil.org.br/site/dados-do-setor/.
[3] Lopes, M. M. (2023). Episodes about coal in Brazil. https://doi.org/10.34637/ADSY-5784.
[4] Coal prices skyrocket and put pressure on the country's steel industry ([n.d.]). Com.br. Retrieved August 16, 2024, from https://diariodocomercio.com.br/economia/preco-do-carvao-mineral-dispara-e-pressiona-siderurgia-no-pais/
[5] Coelho, R. J., Silva, O. J. da, Alves, M. T., Andrade, L. A. de, & Assis, P. S. (2004). Models for predicting the metallurgical quality of coke based on the quality of individual coals and the coke obtained in the pilot coking oven. Rem Revista Escola de Minas, 57(1), 27-32. https://doi.org/10.1590/s0370-44672004000100006