High Rate PCI Operation by Sinter Quality Improvement and Burden Distribution Adjustment

Morimasa ICHIDA; Shinroku MATSUZAKI; Tsuyoshi TANAKA; Fumio KOIZUMI

doi:10.2355/tetsutohagane1955.87.5_342

Morimasa ICHIDA, Shinroku MATSUZAKI, Tsuyoshi TANAKA, Fumio KOIZUMI

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Keywords: high PC injection operation, high productivity, sinter quality, new-type chute, charging pattern adjustment, gas flow centralization, inverse vshape cohesive zone, permeability, dead man, PC ash, dripping slag

JOURNAL FREE ACCESS

2001 Volume 87 Issue 5 Pages 342-349

DOI https://doi.org/10.2355/tetsutohagane1955.87.5_342

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Abstract

Since the beginning of 1998 the high PC injection and low FR operation is realized under high productivity (about 2.2 t/d/m³) and without decrease of Al₂O₃ in sinter in Muroran No. 2 blast furnace. By sinter quality improvement and burden distribution adjustment by new-type charging chute, inverse v-shape cohesive zone is formed under high O/C (more than 5), and gas flow stabilization and improvement of gas permeability and packing characteristic of dead man are observed. One of main tasks from now on is clarifying phenomena of reaction and assimilation between ash from pulverized coal and dripping slag under cohesive zone and its control.

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