Thermodynamic of equilibrium partition ratio of impurities between solid iron and molten oxide

在常规炼铁工艺中，由于高炉炉底氧分压过低，铁矿石中的磷等杂质被还原并存在于铁相中。利用气体还原剂可控制氧分压，可直接炼钢，从而获得低杂质铁。在这种情况下，由于碳不饱和，得到固体铁。本研究在1350℃时，实验测量了固体铁和熔融氧化物之间杂质的平衡分布。

In the conventional iron making process, impurities in iron ore such as phosphorous are reduced and existed in iron phase due to excessively low oxygen partial pressure at the hearth of blast furnace. Low impurity iron might be directory obtained by using gas reductant because Oxygen partial pressure can be controlled, i.e. “Direct Steel Making". In this condition, solid iron is obtained due to not carbon saturated condition. In this study, equilibrium distribution of impurities between solid iron and molten oxide was measured experimentally at 1350℃.