ABSTRACT

The productivity of the blast furnace Ironmaking process is significantly dependent on the slag chemistry. The presence of compounds like Al₂O₃ in high quantities can make the hearth slag highly viscous and difficult to tap. The objective of part-1 of this study is to provide a comprehensive analysis of the role of high alumina (Al₂O₃ > 15%) compositions in the blast furnace slags. Slag viscosity, liquidus temperature, activation energy, etc., are critically reviewed with respective solutions to operate under the desired conditions. Flow parameters of the slag are examined to understand the melting-softening phenomena which directly affect the slag tap-to-tap time. The addition of certain additives to the slag system has also been studied with the aim to improve the target properties of the slag. A range of slag compositions and their optimization techniques are discussed in this part to provide greater insight into the topic.

摘要

高炉炼铁过程的生产率很大程度上取决于炉渣的化学成分。_{Al 2} O ₃等化合物的大量存在会使炉渣变得非常粘稠并且难以出钢。本研究第 1 部分的目的是全面分析高氧化铝 (Al ₂ O ₃ > 15%）高炉炉渣中的成分。炉渣粘度、液相线温度、活化能等均经过严格审查，并采用相应的解决方案在所需条件下运行。检查炉渣的流动参数，以了解直接影响炉渣出钢时间的熔化软化现象。还研究了在炉渣系统中添加某些添加剂，以改善炉渣的目标性能。本部分讨论了一系列炉渣成分及其优化技术，以便更深入地了解该主题。