【摘要】 对比分析了以上海贺利氏电测骑士有限公司生产的Celox钢液定氧探头测量的氧活度和文献中报道的氧活度、LF精炼过程中基于[Al]-[O]平衡计算的铝镇定钢液的氧活度及顶底复吹转炉冶炼终点基于[C]-[O]平衡计算的氧活度.结果表明,该探头测量的氧活度是以1%溶液为标准态,百万分之一氧([10-6O])为浓度单位,而不是冶金热力学中以氧的质量百分含量([%O])为浓度单位定义的氧活度.因此,选用氧的质量百分含量[%O]时,Celox钢液定氧探头测量的氧活度量纲应为10-4,而不是其探头仪表显示的10-6.更多还原

【Abstract】 Taking Celox s oxygen sensor from Heraeus Electro-Nite Shanghai Company Limited as an example,the measured oxygen activity by the sensor has been compared with the reported oxygen activity from literatures,the calculated oxygen activity of aluminum-killed molten steel during a 210 t LF refining process based on [Al]-[O] equilibrium and the calculated oxygen activity of molten steel at steelmaking end-point in an 80 t top-bottom combined blown converter based on [C]-[O] equilibrium.The comparison results show that the measured oxygen activity from Celox oxygen sensor as a representative of commercial oxygen sensors is based on 1%(ω) solution as standard state and one part per million,[10-6 O] as oxygen concentration unit,but not 1%(ω),[%O] as oxygen concentration unit.Therefore,the magnitude of measured oxygen activity by the sensor must be treated as 10-4,rather than the displayed 10-6 in the display device of Celox oxygen sensor under the condition of applying 1%(ω),[%O] as oxygen concentration unit.更多还原