Effect of straw charcoal as a “Carbon Neutral” carbon source on the melting behavior of mold flux

SHANGGUAN Duanyan; XU Yuhong; GUO Zhipeng; HAO Ziyi; LI Tao; TAN Min; GU Shaopeng

doi:10.7513/j.issn.1004-7638.2026.01.011

Volume 47 Issue 1

Feb. 2026

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SHANGGUAN Duanyan, XU Yuhong, GUO Zhipeng, HAO Ziyi, LI Tao, TAN Min, GU Shaopeng. Effect of straw charcoal as a “Carbon Neutral” carbon source on the melting behavior of mold flux[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 94-101. doi: 10.7513/j.issn.1004-7638.2026.01.011

Citation:

SHANGGUAN Duanyan, XU Yuhong, GUO Zhipeng, HAO Ziyi, LI Tao, TAN Min, GU Shaopeng. Effect of straw charcoal as a “Carbon Neutral” carbon source on the melting behavior of mold flux[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 94-101. doi: 10.7513/j.issn.1004-7638.2026.01.011

Citation:

SHANGGUAN Duanyan, XU Yuhong, GUO Zhipeng, HAO Ziyi, LI Tao, TAN Min, GU Shaopeng. Effect of straw charcoal as a “Carbon Neutral” carbon source on the melting behavior of mold flux[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 94-101. doi: 10.7513/j.issn.1004-7638.2026.01.011

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Effect of straw charcoal as a “Carbon Neutral” carbon source on the melting behavior of mold flux

doi: 10.7513/j.issn.1004-7638.2026.01.011

School of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China

More Information

Received Date: 2025-05-07
Accepted Date: 2025-05-30
Rev Recd Date: 2025-05-22

Available Online: 2026-02-28

Publish Date: 2026-02-28

Abstract

Abstract

Carbonaceous materials are one of the essential components in mold flux, mainly serving to regulate its melting behavior. Under the background of the “dual carbon” strategy, conventional carbon materials exhibit high contents of fixed carbon, nitrogen, and sulfur, resulting in excessive emissions of CO₂, NO_x, and SO₂, which pose serious environmental concerns. Moreover, their non-renewability and high cost further limit their sustainable application. Therefore, it is urgent to explore the renewable and environmentally friendly alternatives. The research proposed a “carbon-neutral”, renewable and abundant solid waste, straw charcoal, as a new type of carbon source for protective slag. The respective basic physical properties of carbon black C611 and straw charcoal were investigated, and the influence of carbon types and contents on the melting behavior of mold fluxes were systematically analyzed. The results indicate that straw charcoal possesses a higher specific surface area and larger average particle size than carbon black C611, though its fixed carbon content is relatively lower. With increasing straw charcoal content, the softening temperature, melting temperature, and flowing temperature of mold flux increase noticeably, with the melting temperature being the most affected. As the carbon content of straw increases, the melting rate of the mold flux decreases. When the carbon content is 8%, the control effect of straw charcoal on the melting rate of the protective residue is the same as that of carbon black C611.
- straw charcoal,
- carbon black C611,
- physical properties,
- mold flux,
- melting behavior,
- ontinuous casting

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References(23)

References

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