X-ray diffraction and backscattering were used to compare and analyze the mineral composition and distribution of steel slag in different regions and processes of Baowu Group,and the effect of physical and chemical coupling excitation on the grinding efficiency and gelling activity of steel slag was studied.The results showed that the mineral composition of steel slag in different regions and processes are mainly C3S,β-C2S,C2F and RO phases.The size of belite in different steel slag is quite different,RO phase(all are Fe,Mg,Mn solid solution).Both the grinding efficiency and the gelling activity of the steel slag were improved under the coupled excitation of physical and chemical.
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