Research on Decarbonizing and Temperature Increasing During Reblowing and End-Point Control of Converter
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摘要: 对转炉炼钢接近吹炼终点阶段的脱碳升温规律进行了深入研究，并据此建立了转炉补吹模型；采用线性统计回归自适应算法实现转炉补吹模型参数动态修正。结果表明：转炉吹炼后期补吹阶段的总脱碳氧效率与钢水中碳含量呈线性关系，建立的补吹自适应模型在转炉自动化炼钢终点控制中的精度和命中率方面满足了生产需要。Abstract: On the basis of previous studies,rules of decarbonizing and temperature increasing close to the end-point of blowing during converter steelmaking were studied.A reblowing model was established,and the linear regression self-adaptive algorithm was used to achieve dynamic correction of the model's parameters.The results show that there is a linear relationship between total oxygen efficiency of decarbonization and carbon content in liquid steel at reblowing stage,and with application of the model,the precision and hit rates of end-point control have been achieved to meet the need of automotive converter steelmaking.
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Key words:
- converter /
- reblowing /
- decarbonizing and temperature increasing /
- model /
- end-point control
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