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AOD冶炼中,终点碳和终点温度的命中率是提高生产率和产品质量的关键。由初始温度,初始成分及补加合金量等原始数据,通过本模型可预报要达到目标终点碳所需要的脱碳时间以及相应的终点温度。本模型计算得到的终点碳与实际终点碳,在同等条件下,两者极为接近,可作为一般AOD冶炼中预报终点碳与脱碳时间关系之用。通过分级调整O2、Ar、N2气比例得到最佳脱碳效果,终点碳命中率可提高到98％以上,最高温度可以控制不超过1750℃,延长炉衬寿命。
AOD smelting, the end point of the carbon and the hits the temperature is the key to improving productivity and product quality. From the initial data such as initial temperature, initial composition and additional alloy amount, the decarbonization time needed to reach the target end carbon and the corresponding end temperature can be predicted by this model. The end point carbon calculated by this model and the actual end point carbon are very close under the same conditions and can be used as the prediction of the relationship between the end point carbon and decarburization time in the general AOD smelting. By adjusting the O2, Ar and N2 gas ratios, the optimum decarburization effect can be achieved by grading adjustment, the carbon hit rate of the end point can be increased to over 98% and the maximum temperature can be controlled not to exceed 1750 DEG C, thereby prolonging the lining life.