Modified biomass fuel instead of coke for iron ore sintering

ABSTRACT

Owing to majority of sintering fuel gas pollutants comes from the coke, modified charcoal replaced coke for iron ore sintering to achieve the emissions reduction of the pollutants in this study. By modifying biomass fuel with CaO and urea, the specific surface area, pore volume and pore diameter were reduced to 12.942 m² g⁻¹, 1.326e-02 cc g⁻¹ and 18.865 nm. The experimental results of sintering cup showed that the vertical sintering speed increased, the burning through point advanced, the sinter drum index decreased gradually, and the sintering yield increased initially and then decreased with the increasing of modified charcoal content. The optimum proportion of modified charcoal instead of coke powder was determined to be 40%. Meanwhile, application of the 40% modified charcoal to sintering resulted in a decrease of 45.85% for SO₂ and a decrease of 54.26% for NO_x emissions.

KEYWORDS:

• Biomass fuel
• fossil fuel
• sintering
• pollutants
• modified charcoal

Acknowledgements

LIU Chao participated in sintering cup experiments and drafted the manuscript. ZHAO Kai and XING Hong-wei participated in sintering cup experiments. KANG Yue performed the statistical analysis. ZYZ modified the manuscript. All authors read and approved the final manuscript.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Natural Science Foundation of Hebei Province [E2016209384].