不锈钢氧化脱磷过程的热力学分析

Thermodynamic Analysis on Oxidizing Dephosphorization of Stainless Steel

结合有关的热力学数据,从碳、铬、磷选择性氧化的角度,研究了各参数对不锈钢脱磷热力学条件及工艺的影响。热力学计算结果表明,BaO CaO系渣更适合不锈钢脱磷,应适当提高初始碳含量并降低渣中P2O5含量以利脱磷保铬。这对不锈钢脱磷工艺的制定具有指导意义。

Based on newlypublished data, the influence of process parameters on thermodynamic conditions and process feasibility for dephosphurization were discussed from the point of preferential oxidation. It is found that BaOCaO based flux is more suitable for oxidizing dephosphorization of stainless steel, and carbon in molten steel in crude steel should be increased and P2O5 in raw flux should be reduced to protect chromium in molten steel from oxidization in the process. This is of guiding significance for dephosphurizing process of stainless steel.