（1. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China 2. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China）
Abstract：In order to control the carbon content at the end point of VOD decarburization process, taking the decarburization process of stainless steel in a 120 t VOD furnace in a steel plant as the research object, the waste gas was analyzed by the MTA waste gas analysis system to know the change law of CO, CO2 and other components over time during VOD refining. At the same time, on the basis of the material carbon balance calculations, a control model of the carbon content at the end point of VOD refining process based on the waste gas analysis was established, and the carbon change in the molten bath during the refining process was analyzed. By examining the deviation between the actual value and the predicted value, it was verified that the model can predict the overall trend of the carbon content, and the calculation results obtained from the model showed that the precision of carbon mass fraction at the end point of VOD treatment was within ±3×10-4, which inoculated with the measured ones.
张金鑫，李宏，张炯明，程荣. MTA废气分析在VOD脱碳过程中的应用[J]. 中国冶金, 2018, 28(9): 23-27.
ZHANG Jin- xin，LI Hong，ZHANG Jiong- ming，CHENG Rong. Application of MTA waste gas analysis in VOD process for decarburization[J]. China Metallurgy, 2018, 28(9): 23-27.
2018, Vol. 28 
