In order to make the slag from desulphurization and slag skimming (SDSS) to be comprehensively recycled and utilized, a combined process of beneficiation and building materials preparation was proposed to recover iron from SDSS, meanwhile to apply the remaining slag tailings as cement admixture. From this process, three iron-rich products were recovered in stages by clean gravity - magnetic separation, slag tailings were left. Slag powder was prepared by ultrafine grinding of slag tailings. The stability, setting time and cement mortar strength of the slag tailings cements (STC) which were mixed with Portland cement and slag powder were studied respectively. The results showed that a proper overall performance still could be obtained at the slag powder content of 30%. Chemical composition analysis, X-ray diffraction (XRD) analysis, metallographic microscope and scanning electron microscope (SEM) analysis were employed to assess the characteristics of the SDSS and the products obtained from the whole process. The results indicated that the three iron-rich products could be used as a raw material for steelmaking and ironmaking and the relatively large amount of calcium silicate (C₂S) and tricalcium silicate (C₃S) in the slag tailings make the addition of slag powder into the Portland cement feasible.

为使脱硫和撇渣（SDSS）渣得到综合回收利用，提出了选矿与建材制备相结合的工艺从SDSS中回收铁，同时将剩余的渣尾矿作为水泥外加剂使用。在此过程中，通过清洁重磁分离，分阶段回收了三个富铁产品，留下了渣尾矿。矿渣粉通过矿渣尾矿的超细粉碎制备。分别研究了与硅酸盐水泥和矿渣粉混合的矿渣尾矿水泥（STC）的稳定性、凝结时间和水泥砂浆强度。结果表明，在渣粉含量为30%的情况下，仍能获得良好的综合性能。化学成分分析，X射线衍射（XRD）分析，采用金相显微镜和扫描电子显微镜 (SEM) 分析来评估 SDSS 和整个过程中获得的产品的特性。结果表明，3种富铁产品均可作为炼钢和炼铁的原料，且硅酸钙（C_{矿渣尾矿中的2} S) 和硅酸三钙 (C ₃ S) 使得将矿渣粉末添加到波特兰水泥中是可行的。