In the steelmaking process, the remained converter slag with P-containing materials is harmful to the molten steel in the next furnace. By the slag-splashing process with air blowing, P in the molten slag can be reduced and separated from the slag in the form of gas. In this paper, the reduction experiments of converter slag were carried out by flowing N 2 at high temperatures, and the P-containing gas formed in this process was cooled and collected in water. It is found that the P gas was mainly composed of P 2 , which matched well with the results predicted by the FactSage7.2 calculation. The reaction mechanism of gasification dephosphorization in molten slag was analyzed, which was mainly proceeded on the surface of the slag. SEM-EDS and XRD were used to detect and characterize the samples. The ore phase of the converter slag and the gasification dephosphorization slag was determined, and the phase change was analyzed and compared.

中文翻译：

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转炉渣还原脱磷机理及相变

在炼钢过程中，转炉残渣含有含磷物质，对下一炉钢水有害。通过吹气的溅渣工艺，可以将熔渣中的P降低并以气体的形式与熔渣分离。本文通过在高温下流动N 2 进行转炉炉渣还原实验，并将该过程中形成的含P气体冷却并收集在水中。发现P气主要由P 2 组成，与FactSage7.2计算预测的结果吻合较好。分析了熔渣气化脱磷的反应机理，主要在熔渣表面进行。SEM-EDS和XRD用于检测和表征样品。