For a better thermodynamic understanding of the optimization of molten slag in the stainless-steel refining process, the solubility of chromium oxide in the CaO–SiO₂–Cr₂O₃ slag system was investigated. A chemical equilibrium technique was employed in which molten slag and solid Cr₂O₃ pellets were equilibrated under a regulated oxygen partial pressure (P_O2) lower than 10⁻¹¹ atm at 1873 K. The mass ratio of CaO to SiO₂ (X_CaO / X_SiO2), as an index of slag basicity, was varied from 0.5 to 1.5. A CO–CO₂–Ar gas mixture was used, and the oxygen partial pressure was precisely controlled by evaluating possible contamination by oxygen that was inevitably introduced into the gas mixture system. A zirconia oxygen sensor was used to directly measure the oxygen partial pressure for this evaluation. The solubility of chromium oxide increased with decreasing slag basicity and oxygen partial pressure. Accordingly, slag design is a huge prospect toward achieving desirable refining conditions.

为了更好地了解不锈钢精炼过程中熔渣优化的热力学，研究了氧化铬在 CaO-SiO ₂ -Cr ₂ O ₃渣体系中的溶解度。采用化学平衡技术，其中熔渣和固体 Cr ₂ O ₃球团在 1873 K、低于 10 ^-11 atm的调节氧分压 ( P _{O 2} ) 下平衡。CaO 与 SiO ₂的质量比( X _CaO / X _{SiO 2} )，作为渣碱度的指标，在​​0.5至1.5之间变化。A CO-CO ₂使用 –Ar 气体混合物，并通过评估不可避免地引入气体混合物系统的氧气可能造成的污染来精确控制氧气分压。氧化锆氧传感器用于直接测量氧分压以进行评估。氧化铬的溶解度随着渣碱度和氧分压的降低而增加。因此，炉渣设计是实现理想精炼条件的巨大前景。