The phase and element distribution of converter slag was analyzed with the backscattered electron (BSE) images of scanning electron microscopy and X-ray energy spectrum. The results show that the Ca and Si are attached in the slag micro-area, while the Fe is present in areas with less Ca and Si. Most of the P appear in areas with more Ca and Si. The content of SiO 2 tends to increase with an increase in the CaO content in the slag micro-area. The activity of a CaO increases with an increase in the CaO content in the slag micro-area, while the activity of a FeO increases first and then decreases. In the slag micro-area with an increase in the FeO content, both the mole fraction and the activity coefficient of SiO 2 decrease; so, the content of SiO 2 decreases gradually.

中文翻译：

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转炉渣微区的相分布对磷发生的影响

利用扫描电子显微镜的背散射电子（BSE）图像和X射线能谱对转炉渣的相和元素分布进行了分析。结果表明，Ca和Si附着在炉渣微区中，而Fe存在于Ca和Si较少的区域中。大部分P出现在Ca和Si较多的区域。SiO 2的含量倾向于随着矿渣微区中CaO含量的增加而增加。CaO的活性随渣微区中CaO含量的增加而增加，而FeO的活性则先增加然后降低。在FeO含量增加的矿渣微区中，SiO 2的摩尔分数和活性系数均降低；因此，SiO 2的含量逐渐降低。