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METHOD OF OUTSIDE-FURNACE TREATMENT OF STEEL IN 100 T LADLE

机译:100T钢包钢的炉外处理方法

摘要

FIELD: ferrous metallurgy. SUBSTANCE: method includes introduction of ferroalloys into ladle, discharge of metal and slag, balancing blowing with neutral gas, sampling, addition of ferroalloys correcting chemical analysis, and final blowing. Distinguishing feature of invention is that, with slag layer thickness not exceeding 200 mm and weight of ferroalloys added into ladle before tapping not exceeding 700 kg, balancing blowing is performed for 2 min, whereas, if above-indicated magnitudes are exceeded, balancing blowing is performed for 3-5 min and introduction of ferroalloys correcting chemical analysis of metal and final blowing are performed not earlier than 70% of metal-in-ladle residence time (from beginning of tapping to beginning of casting) is expired. EFFECT: enhanced efficiency of process.
机译:领域:黑色冶金。实质:方法包括将铁合金引入钢包,排出金属和炉渣,用中性气体平衡吹炼,取样,添加校正化学分析的铁合金以及最后吹炼。本发明的显着特征在于,渣层厚度不超过200mm,出钢前加入钢包的铁合金重量不超过700kg,进行平衡吹炼2分钟,而如果超过上述量,则进行平衡吹炼。进行3-5分钟,并在不超过钢包内金属停留时间(从出钢开始到铸造开始)的70%的时间内进行校正金属和最终吹炼的铁合金。效果:提高了流程效率。

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