鉄鋼スラグの熱・材料ポテンシャルを活用した中国鉄鋼業の脱炭素化
Harnessing the heat and material potential in steel slag to decarbonize China’s steel industry (原題)
Yiwen Lv, Junjun Wu, Zhen Han, Yuhao Xiang, Zhenyu Sun, Xiaohuan Liu, Hong Wang, Wei Ren, Xun Zhu, Qiang Liao
🤖 gxceed AI 要約
日本語
中国の鉄鋼業で発生する鉄鋼スラグのリサイクル率は30%未満。本研究では、溶融スラグに高炉スラグと砂を添加する共処理法を提案し、粘度を83%低減、熱回収効率を75%に向上させた。得られたスラグビーズはほぼ100%ガラス質でセメント原料に適し、CO2排出を82 Mt削減、年間87億ドルの収益が見込める。
English
This study introduces a co-processing method for steel slag with blast furnace slag and sands, reducing viscosity by 83% and achieving 75% thermal recovery efficiency. The resulting glassy slag beads are suitable for cement production, potentially reducing CO2 emissions by 82 Mt and generating $8.7 billion annual revenue in China's steel industry.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の鉄鋼業でもスラグの有効利用は重要課題であり、本技術は廃熱回収とセメント代替によるCO2削減に寄与する。日本の鉄鋼メーカーやセメント業界にとって、循環経済と脱炭素の両立を図る参考となる。
In the global GX context
This work addresses the global challenge of industrial waste valorization and decarbonization in the steel sector. It offers a scalable solution for heat recovery and clinker substitution, aligning with circular economy principles and contributing to emission reduction targets.
👥 読者別の含意
🔬研究者:Provides a novel co-processing approach for steel slag with high thermal recovery and cementitious material production, offering a pathway for industrial decarbonization.
🏢実務担当者:Steel and cement companies can explore this technology to recover waste heat, reduce emissions, and generate additional revenue streams.
🏛政策担当者:Highlights the potential of industrial symbiosis and circular economy policies to achieve significant CO2 reductions in hard-to-abate sectors.
📄 Abstract（原文）
The steel industry generates hundreds of millions of tons of steel slag (SS), with <30% recycled in China due to its recalcitrant properties. Herein, we introduce a co-processing approach, modifying the molten SS with low-cost blast furnace slag (BFS) and sands to recover heat and produce cementitious materials. Such modification reduces SS viscosity by 83% (0.5 Pa·s) and free CaO to <2%, enabling 75% thermal recovery efficiency (50% higher than conventional methods). Moreover, the final slag beads are nearly 100% glassy, suitable for cement production. Energy-economic assessment confirms its carbon-negative nature with heat and material potential being fully exploited. Scaling this technology across Chinese steel plants could yield $8.7 billion annual revenue and reduce 82 Mt CO2 emissions (9.4% sectoral total) through heat reuse and clinker substitution. This work provides a potential pathway to the “hard-to-use” SS waste streams and advances the circular economy in China’s metallurgical industry.
🔗 Provenance — このレコードを発見したソース
- primary_source https://doi.org/10.1007/s43979-026-00179-6first seen 2026-08-31 00:18:37
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