Citation: | Zhang Wei, Wang Hui, Xing Hongwei, Tian Tielei, Wu Lizhong, Liu Fan. Phase Analysis and Phosphorus Transformation in Sintering Gasification Dephosphorization Process[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(3): 78-82. doi: 10.7513/j.issn.1004-7638.2015.03.016 |
In order to explore the transformation mechanism of phosphorus during sintering process,minisintering experiment was carried out based on the thermodynamic calculation,and the component and phase of calcined product were analyzed. The results show that the dephosphorization ratio reached up to 20% in the conditions of 4% carbon,1.41% SiO2 and 1.36% CaCl2; When adding SiO2,Ca5(PO4)3F is transformed into Ca3(PO4)2 through defluorination reaction,and then dephosphorization reaction takes place. After adding CaCl2,the diffraction peak of Ca5(PO4)3F decreases,while diffraction peak of CaSO4 enhance obviously,at the same time both CaF2 phase and CaSiO4 phase appeare,which indicating the occurrence of gasification dephosphorization reaction with PCl3 as dephosphorization product.