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为了连续地预测电弧炉熔池中碳含量,实现对冶炼终点碳含量的控制,以红外烟气分析技术和物质质量守恒计算为基础,结合入炉总碳量和供氧量等生产数据,建立了电弧炉炼钢脱碳数学模型.对莱芜钢铁股份有限公司特殊钢厂50tUHP电弧炉实际冶炼数据的模拟计算表明,该模型能实现对熔池碳含量的连续预测和终点控制.模拟计算结果还表明,电弧炉冶炼过程中,脱碳速度主要受供氧流量的影响,最大可达0.12%～0.16%min-1.该模型用于电弧炉供氧优化后,氧气消耗明显降低.
In order to continuously predict the carbon content in the EAF bath and achieve the control of the carbon content at the end of the smelting process, based on the infrared flue gas analysis technology and the calculation of the mass conservation of materials, combined with the production data of total carbon input and oxygen supply, The mathematical model of electric arc furnace steelmaking and decarburization was simulated.The simulation calculation of actual smelting data of 50tUHP EAF of Laiwu Iron and Steel Co., Ltd. showed that the model can achieve the continuous prediction and end point control of the carbon content of the molten pool. The results show that the rate of decarburization in the electric arc furnace smelting process is mainly affected by the oxygen supply flow rate, up to 0.12% ~ 0.16% min-1.This model is used to optimize the oxygen supply of EAF, the oxygen consumption is significantly reduced.