基于冶金热力学的钢液定氧探头氧浓度单位确定

›› 2011, Vol. 11 ›› Issue (1): 85-90.

基于冶金热力学的钢液定氧探头氧浓度单位确定

杨学民史成斌张盟李道明

中国科学院过程工程研究所多相反应开放实验室中国科学院过程工程研究所多相反应开放实验室中国科学院过程工程研究所多相反应开放实验室山西太钢不锈钢股份有限公司品质部

收稿日期:2010-12-24 修回日期:2011-01-28 出版日期:2011-02-20 发布日期:2011-02-20
通讯作者: 杨学民

Assessment of Oxygen Concentration Unit from Measured Oxygen Activity by Oxygen Sensor Based on Metallurgical Thermodynamics

YANG Xue-min SHI Cheng-bin ZHANG Meng LI Dao-ming

Institute of Process Engineering，Chinese Academy of Sciences Institute of Process Engineering，Chinese Academy of Sciences Institute of Process Engineering，Chinese Academy of Sciences Quality Control Department, Shanxi Taigang Stainless Corporation Limited

Received:2010-12-24 Revised:2011-01-28 Online:2011-02-20 Published:2011-02-20
Contact: YANG Xue-min

摘要/Abstract

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([10-6 O])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.

关键词: 氧活度, 钢液定氧探头, 氧浓度单位, 冶金热力学, Celox钢液定氧探头

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%(w) solution as standard state and one part per million, [10-6 O] as oxygen concentration unit, but not 1%(w), [%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%(w), [%O] as oxygen concentration unit.

Key words: oxygen activity, oxygen sensor for molten steel, oxygen concentration unit, metallurgical thermodynamics, Celox oxygen sensor for molten steel

中图分类号:

TF701.3

杨学民史成斌张盟李道明. 基于冶金热力学的钢液定氧探头氧浓度单位确定[J]. , 2011, 11(1): 85-90.

YANG Xue-min SHI Cheng-bin ZHANG Meng LI Dao-ming. Assessment of Oxygen Concentration Unit from Measured Oxygen Activity by Oxygen Sensor Based on Metallurgical Thermodynamics[J]. , 2011, 11(1): 85-90.