Abstract:Based on the measure of waste gas flow rate and CO, CO2 content of it by the RH waste gas analysis system, waste gas analysis decarburization mathematic model was established. The calculated results by model inosculated the measured ones. The precision of the end-point carbon content of RH treatment was ±3×10-6 for a carbon range of ULC steel([C] ≤20×10-6). The correction coefficient, , of waste gas flow rate was evaluated by two subsection according with the factual production process. The value of was 0.35 when the RH treatment time was less than 3 minutes, otherwise was 0.6. When the CO content of waste gas decreased to 5% from the maximum at the terminal stage of RH decarburization, the average value of carbon content in the bulk liquid steel was 13×10-6 which was below the requirement content at the end of RH process. Therefore, 5% CO in waste gas at the terminal stage of RH decarburization became a criterion to judge the finish of RH decarburization.
收稿日期: 2009-03-26
引用本文:
刘柏松 朱国森 李本海. 废气分析在RH脱碳过程中的应用[J]. 钢铁, 2010, 45(2): 23-23.
LIU Bai-song Guo-Sen ZHU Ben-hai LI. Application of Waste Gas Analysis for RH Decarburization Process. Iron and Steel, 2010, 45(2): 23-23.