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<p>The increasing demand for high-quality steel smelting has promoted the development of rare-earth microalloying. The addition of rare earth oxides (REOs) to steelmaking slag clearly improves the smelting process by mitigating certain limitations, for example, slag/steel interfacial reactions caused by the high reactivity of rare earth metals, and it also enhances the microalloying effect. However, the addition of REOs significantly changes the network structure of the steelmaking slag, thus affecting its thermophysical and thermochemical properties (such as viscosity and melting temperature, etc.). Therefore, it is necessary to discuss the effects of REOs types and their contents on the properties of steelmaking slag, which include the evolution of aluminate and silicate network structures, the crystallization properties, the slag/steel interfacial reaction, the slag/refractory interaction, and other properties. Furthermore, it discusses the progress of research in the field of slag structures and the effects of REOs on the slag radical coexisting structure, among other considerations.</p>

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Advances of rare earths in steelmaking with associated slags and refractories

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • Xu-Yong Jiang,
  • Sheng-Hao Li,
  • Ao Huang,
  • Yong-Shun Zou,
  • Anton Yehorov,
  • Olena Volkova

摘要

The increasing demand for high-quality steel smelting has promoted the development of rare-earth microalloying. The addition of rare earth oxides (REOs) to steelmaking slag clearly improves the smelting process by mitigating certain limitations, for example, slag/steel interfacial reactions caused by the high reactivity of rare earth metals, and it also enhances the microalloying effect. However, the addition of REOs significantly changes the network structure of the steelmaking slag, thus affecting its thermophysical and thermochemical properties (such as viscosity and melting temperature, etc.). Therefore, it is necessary to discuss the effects of REOs types and their contents on the properties of steelmaking slag, which include the evolution of aluminate and silicate network structures, the crystallization properties, the slag/steel interfacial reaction, the slag/refractory interaction, and other properties. Furthermore, it discusses the progress of research in the field of slag structures and the effects of REOs on the slag radical coexisting structure, among other considerations.