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用30 kg中频炉和自制的硅钼棒炉,对不同硫、磷含量的铸造铁水用稀土氧化渣进行了净化处理研究,对处理过程中的脱硫和脱磷行为进行了热力学分析。研究表明,与传统的钙系渣处理相比成本可降低50％以上,脱硫率可提高30～40％;且兼有提高铸件性能及脱磷、脱氧的作用。
The 30 kg IF furnace and self-made silicon-molybdenum bar furnace were used to purify the foundry molten iron with different contents of sulfur and phosphorus with rare earth oxide slag. The desulfurization and dephosphorization behaviors in the process were analyzed by thermodynamics. The results show that the cost can be reduced by more than 50% and the desulfurization rate can be increased by 30 ~ 40% compared with the traditional treatment of calcium-based slag, and both the performance of the casting and the dephosphorization and deoxidation can be enhanced.