Comportamiento del coque <i>char</i> y residuos orgánicos en el horno alto con altas tasas de inyección

H. W. Gudenau; D. Senk; K. Fukada; A. Babich; C. Froehling; L. L. García; A. Formoso; F. J. Alguacil; A. Cores

doi:10.3989/revmetalm.2003.v39.i5.349

Coke, char and organic waste behaviour in the blast furnace with high injection rate

Authors

H. W. Gudenau Dept. of Ferrous Metallurgy, Aachen University
D. Senk Dept. of Ferrous Metallurgy, Aachen University
K. Fukada Ironmaking & Environmental Process Research Dept. JFE Steel Corporation
A. Babich Dept. of Ferrous Metallurgy, Aachen University
C. Froehling Dept. of Ferrous Metallurgy, Aachen University
L. L. García Centro de Investigaciones Metalúrgicas (CIME)
A. Formoso Centro Nacional de Investigaciones Metalúrgicas (CENIM/CSIC)
F. J. Alguacil Centro Nacional de Investigaciones Metalúrgicas (CENIM/CSIC)
A. Cores Centro Nacional de Investigaciones Metalúrgicas (CENIM/CSIC)

DOI:

https://doi.org/10.3989/revmetalm.2003.v39.i5.349

Keywords:

Blast furnace, Coke, hydrocarbons, Degradation, Tuyere injection, Auxiliary hydrocarbons

Abstract

Blast furnace operation with low coke rate, high amount of auxiliary hydrocarbons and use of nut coke causes a change in coke quality requirements. In particular, not burned in the raceway residues of injected substances (char and ash) can influence the coke behaviour. Therefore combustion efficiency of various organic wastes with and without pulverized coal injection (PCI) and coal char has been investigated under the raceway simulation conditions. Mixing of various substances improves their combustion efficiency. Study on coke gasification by carbon dioxide in the presence of char showed that with the increase of char concentration, coke strength reduction becomes smaller. The reactivity of char with CO₂ is higher than that of coke. Therefore char is consumed preferentially. In presence of injected char, total pore volume in coke and its wear resistance were increased. Coke reactivity and microstructure in the presence of various kinds of ash has been studied. Many ash spheres were observed on the surface of coke matrix and its size was dependent on ash properties.

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Published

2003-10-30

How to Cite

Gudenau, H. W., Senk, D., Fukada, K., Babich, A., Froehling, C., García, L. L., Formoso, A., Alguacil, F. J., & Cores, A. (2003). Coke, char and organic waste behaviour in the blast furnace with high injection rate. Revista De Metalurgia, 39(5), 367–377. https://doi.org/10.3989/revmetalm.2003.v39.i5.349

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Issue

Vol. 39 No. 5 (2003)

Section

Articles

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