论文部分内容阅读
针对宝钢不锈钢分公司侧顶复吹AOD炉在实际使用过程中表现出来的脱碳速度偏慢、钢水中铬元素氧化量偏大、吹炼过程升温偏慢的情况,以实验室模拟研究结果为基础,通过将其顶部单孔氧枪改为三孔氧枪的方法,对比分析了AOD炉单孔顶枪、11°三孔顶枪和15°三孔顶枪在脱碳速度、钢水中铬氧化情况以及升温速度3个方面的各自表现。结果表明,当AOD炉以电炉提供的高碳母液为主原料时,在枪位设定合理的条件下,11°三孔顶枪的使用有利于进一步提高AOD炉脱碳速度、降低AOD炉钢中铬氧化并加快熔池升温速度;单孔氧枪由于孔数不足,其在AOD炉中的不锈钢冶炼效果不佳;15°三孔顶枪由于孔间夹角设定不合理,与宝钢不锈钢分公司AOD炉侧吹复合使用时效果不佳。
In view of the slow decarburization speed, the excessive oxidation of chromium in the molten steel and the slow temperature rise in the blowing process during the actual use of the AOD furnace at the side of the top of the Baosteel stainless steel branch, the results of laboratory simulation showed that Based on the method of changing the single-hole oxygen gun at the top to the three-hole oxygen lance, the effects of the AOD furnace single-hole top gun, 11 ° three-hole top gun and 15 ° three-hole top gun on the decarburization rate, Oxidation and heating rate of the three aspects of their performance. The results show that when the AOD furnace is made of high-carbon mother liquor from EAF, the use of 11 ° three-hole top gun is beneficial to further improve the decarburization speed of AOD furnace and reduce the heat of AOD furnace steel In the oxidation of the chromium and accelerate the temperature rise of the molten pool; single hole oxygen lance due to lack of holes, the AOD furnace stainless steel smelting poor; 15 ° three-hole top gun due to the angle between the holes set unreasonably, and Baosteel stainless steel Branch AOD furnace side blow when combined with poor results.