采用SEM、EDS、XPS、FT-IR相结合的分析方法，对乙酸-水-磷酸三丁酯复合溶剂浸出后的钢渣进行了分析，研究了有机-无机复合介质浸出对钢渣中含铁物相存在形式的影响. 结果表明，钢渣中的铁主要以铁单质、铁氧化物、铁酸盐及MgO, FeO和MnO形成的固溶体(RO相)存在，浸出后RO相被破坏，铁元素主要以铁氧化物、铁氢氧化物形式存在，其中Fe3+占88.9%，Fe2+占11.1%，可通过进一步磁选回收浸出钢渣中的铁资源.

Steelmaking slag was leached in organic-inorganic composite medium composed of acetic acid and tributyl phosphate. The main existing form and phase distribution of iron in the leached slag were investigated by combination of SEM, EDS, XPS and FT-IR. The results show that the iron phases in raw slag include elemental iron, iron oxide, ferrite and RO phase, while in the leached slag there are iron oxides and iron hydroxides, 88.9% in the form of Fe3+ and 11.1% in the form of Fe2+. The iron resource could be recovered from the leached steelmaking slag by further magnetic separation.