Statistical Assessment of Coal Charge Effect on Metallurgical Coke Quality

• Autorzy: Pustejovska P. , Brozova S. , Jursova S.
• Języki publikacji: EN

Abstrakty

EN

The paper studies coke quality. Blast furnace technique has been interested in iron ore charge; meanwhile coke was not studied because in those previous conditions seemed to be good enough. Nowadays, the requirements for blast furnace coke has risen, especially, requirements for coke reactivity [1]. The level of reactivity parameter is determined primarily by the composition and properties of coal mixtures for coking. The paper deals with a statistical analysis of the tightness and characteristics of the relationship between selected properties of coal mixture and coke reactivity. Software Statgraphic using both simple linear regression and multiple linear regressions was used for the calculations. Obtained regression equations provide a statistically significant prediction of the reactivity of coke, or its strength after reduction of CO2, and thus their subsequent management by change in composition and properties of coal mixture [2]. There were deter-mined indexes CSR/CRI for coke [3]. Fifty – four results were acquired in the experimental parts where correlation between index CRI and coal components were studied. For linear regresion the determinant was 55.0204%, between parameters CRI – Inertinit 21.5873%. For regression between CRI and coal components it was 31.03%. For multiply linear regression between CRI and 3 feedstock components determinant was 34.0691%. Final correlation has shown the decrease in final coke reactivity for higher ash, higher content of volatile combustible in coal increases the total coke reactivity and higher amount of inertinit in coal increases the reactivity. Generally, coke quality is significantly affected by coal processing, carbonization and maceral content of coal mixture.

Słowa kluczowe

EN

coke; blast furnace; statistical assessment

PL

koks; piec hutniczy; ocena statystyczna

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Production Engineering Archives
• Rocznik: 2016
• Tom: Vol. 11, No. 2
• Strony: 15--17
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Pustejovska P.

• VŠB –Technical University of Ostrava, Faculty of Metallurgy and Material Engineering, 17. listopadu 15, Ostrava, Czech Republic

autor

Brozova S.

• VŠB –Technical University of Ostrava, Faculty of Metallurgy and Material Engineering, 17. listopadu 15, Ostrava, Czech Republic

autor

Jursova S.

• VŠB –Technical University of Ostrava, Faculty of Metallurgy and Material Engineering, 17. listopadu 15, Ostrava, Czech Republic

Bibliografia

• 1. Pustějovská P., Brožová S., Jursová S. 2010. Environmental benefits of coke consumption decrease. In METAL2010: 19th International Conference on Metallurgy and Materials, Czech Republic: conference proceedings, TANGER Ltd. pp. 79-83.
• 2. Konstanciak A. 2010. The Selection of Coal Mixes for the Production of Blast-Furnace Coke. Acta Metallurgica Slovaca Conference, Vol.1. 2010, No.4, pp. 62-65. ISSN 1338-1660.
• 3. Ulanovskii M. L. 2010. Influence of the Composition of Coal Ash on Its Flow Temperature and on the CSR and CRI Values of the Coke Produced. Coke and Chemistry. Vol. 53, No. 1, pp. 19–24.
• 4. Legemza J. et al. 2010. Emissions CO and CO(2) in the sintering process. In SGEM 2010: 10th International Multidisciplinary Scientific GeoConference: 20. - 26. 6. 2010. Albena, Bulgaria [CD-ROM]. pp. 567-572.
• 5. Baricová D, Demeter P. 2010. New trends in utilizing of slags from ironmaking processes. In SGEM 2010: 10th International Multidisciplinary Scientific GeoConference: 20. - 26. 6. 2010. Albena, Bulgaria [CD-ROM]. p. 887-892.
• 6. Konstanciak A. 2010. The Selection of Coal Mixes for the Production of Blast-Furnace Coke. Acta Metallurgica Slovaca Conference, Vol.1. No.4, pp. 62-65.
• 7. Pustějovská P., Brožová S., Jursová S. 2010. Environmental benefits of coke consumption decrease. In METAL 2010, 19th International Conference on Metallurgy and Materials, Czech Republic: conference proceedings, TANGER Ltd. pp. 79-83.
• 8. Stan T. Madziej. 2010. Physical simulation of metallurgical processes. Materials and technology 44, 3, pp. 105–119.
• 9. Ice B. Ridsecki. 2011. New discovered paradoxes in theory of balancing chemical reactions. Materials and technology 45, 6, pp. 503–522.
• 10. Bilík J., Pustějovská P., Brožová S., Jursová S. Efficiency of Hydrogen Utilization in Reduction Processes in Ferrous Metallurgy. Scientia Iranica, Vol. 20, Iss. 2, pp. 337-342 DOI: 10.1016/j.scient.2012.12.
• 11. Pustějovská P., Jursová S., Brožová S. 2013. Determination of Kinetic Constants from Tests of Reducibility and their Application for Modelling in Metallurgy. Journal of the Chemical Society of Pakistan, Vol. 35, Iss. 3, June, pp 565-569.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.