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The phosphorus-concentrating phase in the converter slags was designed and simulated by synthetic converter slag.The distribution of phosphorus in factory converter slags was also analyzed by scanning electron microscope(SEM) and X-ray diffraction(XRD).Then factory converter slags were modified by addition of SiO_2 and heated to 1540℃and then cooled to room temperature.The results showed that the phosphorus in the factory converter slags was mostly distributed in two phases:dicalcium silicate (C_2S) and tricalcium silicate(C_3S) by formation of solid solution,and with a little in matrix.Whereas,in the synthetic slags with the basicity close to 3,phosphorus was almost concentrated in phase of C_2S(Pconcentrating phase) in which the contents of P_2O_5 reach to 7.74%.This lays a good foundation for grinding and separation of P- concentrating phase.
The phosphorus-concentrating phase in the converter slags was designed and simulated by synthetic converter slag. The distribution of phosphorus in factory converter slags was also analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD) .Then factory converter slags were modified by addition of SiO 2 and heated to 1540 ° C and then cooled to room temperature. The results showed that the phosphorus in the factory converter slags was mostly distributed in two phases: dicalcium silicate (C_2S) and tricalcium silicate (C_3S) by formation of solid solution, and with a little in matrix. Hereas, in the synthetic slags with the basicity close to 3, phosphorus was almost concentrated in phase of C_2S (Pconcentrating phase) in which the contents of P_2O_5 reach to 7.74%. This lays a good foundation for grinding and separation of P-concentrating phase.