转炉气相定碳的热模拟

Hot Model Investigation on Endpoint Carbon Control in Converters by Exhaust Gas Information

建立了转炉内钢液含碳量动态检测的数学模型，并在５０ｋｇ感应炉上进行了热模拟试验。结果表明：利用质谱仪连续分析炉气成分迅速而准确；计算出的炉气流量精度较高；利用数学模型定碳误差为０．０３％。产生误差的原因是炉子容量小，喷溅等对钢水损失影响大；在大生产条件下，因为炉量大，其它条件也较优越，预计气相定碳精度可大大提高。

A dynamic mathematical model for determining carbon contents in a converters has been established and the experiment was carried out in a induction furnace with a capacity of 50kg.Results are as follows:Contiuous analysis of exhaust gas content in a furnace by mass-spectrometer is accurate and quick.Flowrate of exhaust gas is calculated with high precision.Carbon contents in molten steel is calculated by the mathematicial model with a tolerance from 0 to 0.055%,and the average error of 0.03% during the whole blow process.Splashing is one of the factors which affect the accuracy of model estimation.In a practical production,with a larger furnace capacity and better condition, precision of the carbon content estimation will be improved to a large extent.