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中文摘要：
转炉渣中的磷主要存在于n2CaO·SiO2-3CaO·P2O5（以下简记为nC2S-C3P）固溶体的富磷相中。为了深入理解转炉渣的物相，便于有效富集钢渣中的磷，研究MgO和MnO含量的变化对CaO-SiO2-Fe2O3-P2O5渣中nC2S-C3P固溶体的磷含量及渣结晶物相的影响，并对其进行热力学分析。结果表明：在CaO-SiO2-Fe2O3-P2O5四元渣系中加入少量MgO或MnO，可以在一定程度上提高nC2S-C3P固溶体中的磷含量；继续提高MgO或MnO含量，固溶体中的磷含量不再发生变化。随着MgO或MnO的加入，富铁相增多，有利于钢渣的磁选分离。
英文摘要：
The phosphorus in P-bearing converter slag is mainly existed in the form of n2CaO·SiO2-3CaO·P2O5 （for short nC2S-C3P） solid solution in the P-rich phase. For a better understanding of the phase in the CaO-SiO2-Fe2O3-P2O5 slag system, and an effective enrichment of the phosphorus in converter slag, the effect of MgO and MnO on the P2O5 content in the P-rich phase and effect on crystallization phase were studied by performing thermodynamic analysis. The results show that the content of P2O5 in the P-rich phase increases by adding of MgO and MnO to the CaO-SiO2-Fe2O3-P2O5 slag system. However, the increasing of MgO and MnO has no effect on the P2O5 content. With the addition of MgO and MnO, the iron rich phase is observed in an increasing tendency, which shows that it is favorable to the magnetic separation of P-bearing slag.
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