Comparison study on hot state modification of converter slag by adding Al203 or SiO2

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外文摘要：The value-added utilization of converter steel slag is crucial,with China's annual production having reached 100 million tons.The utilization of converter slag in the construction materials sector is limited as it undergoes volume expansion during the aging process,mainly caused by the hydration reaction of free calcium oxide present in the slag.The influence of alumina addition on the mineral transformation of typical industrial converter slag was investigated.Different quantities of alumina were introduced into the slag,and the original and modified slags were remelted under argon atmosphere,followed by quenching.The experimental results were compared with thermodynamic simulation calculations for further analysis.As the alumina content increases,it reacts with the free calcium oxide in slag,leading to the formation of low-melting-point calcium aluminoferrite.Additionally,alumina addition effectively reduces slag viscosity.Finally,an assessment of the energy consumption for alumina-modified and silica-modified converter slags was presented.

外文关键词：

Converter slagFree calcium oxideAlumina additionViscosityEnergy consumption

作者：

Yu-feng Tian、Guang-qiang Li、Yong-qian Li、Yu Liu

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作者单位：

The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China

China Baowu Steel Group Corporation Limited,Shanghai 201900,China

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出版年：

2024

DOI：

10.1007/s42243-023-01172-4

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(11)