Effect of coke reactivity on softening-melting and dripping behaviors of sinter

Yan, Ruijun; Liu, Zhenggen; Chu, Mansheng; Liu, Peijun

doi:10.1080/03019233.2023.2200621

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The CRI of coke A, B, C, and D is 24.75%, 30.80%, 41.25%, and 45.11%, respectively. The details on the CRI/CSR measurements have been introduced in our previous research [25,26]. Table 2 presents the chemical composition of the sinter.…”

Section: Raw Materialsmentioning

confidence: 99%

Effect of coke reactivity on reduction behaviours and non-isothermal kinetics of sinter at 1173–1373 K

Yan,

Liu,

Chu

et al. 2023

Ironmaking & Steelmaking

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Utilizing high-reactivity coke is a critical approach for low-carbon iron-making. In this study, we investigated the effect of coke reactivity on reduction behavior and non-isothermal kinetics of sinter. The results show that the mass-loss rate of the burden gradually increased with increasing coke reactivity. At 1173-1373 K, the reduction process complied with the mechanism model F 2 of second-order chemical reaction control. The integral form of F 2 is G(α)=(1-α) -1 -1, and the α is the extent of the conversion. The coke reactivity did not affect the reduction mechanism of the sinter. The apparent activation energy E of the reduction process without coke was 93.39 kJ/mol. As the coke CRI was 24.75%, 30.80%, 41.25%, and 45.11%, the E was 89.13 kJ/mol, 88.63 kJ/mol, 85.60 kJ/ mol, and 77.27 kJ/mol, respectively. The gasification reaction of coke with high reactivity can enhance the gas-phase reduction ability of the reduction process.

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Section: Raw Materialsmentioning

confidence: 99%