通过对转炉顶吹CO2的热力学分析，结合实验室模拟转炉顶吹O2＋CO2混合气体试验结果，确立了CO2在转炉中应用的关键参数。得出在转炉中顶吹纯CO2虽可脱碳，但温降较大，顶吹CO2供气强度为3.0 m3/(t·min)时，钢液温降速率为15.1℃/min；通过喷吹O2＋CO2混合气体可实现温度平衡，但CO2配比的最大理论比例为79.1%；随着混合气体中CO2比例增大，吹炼终点钢液碳氧积降低，当φ(CO2)∶φ(O2)＝1∶1时可控碳氧积为(25～32)×10－8。
By the thermodynamic analysis of top blowing CO2 in the converter,combined with laboratory simulation re-sult of top blowing O2+CO2 mixture gas in converter,some key parameters of CO2 used in converter were established. It is concluded that although pure CO2 injected in the converter could achieve decarburize,the drop of temperature was rath-er large. When the CO2 supplying intensity was 3.0 m3/(t·min),the reduction of temperature was 15.1℃/min;By blow-ing O2+CO2 mixture gas,temperature balance could be realized,but the largest theoretical proportion of CO2 in mixture gas was 79.1%;with the increase of CO2 proportion,the carbon and oxygen product of molten steel at the blowing end was reduced,under the condition of φ(CO2)∶φ(O2)=1∶1,the carbon and oxygen product could be controlled in the range of (25~32)×10-8.
参考文献
| [1] | 朱荣,易操,陈伯瑜,汪灿荣,柯建祥.应用COMI炼钢工艺控制炼钢烟尘内循环的研究[J].冶金能源,2010(01):48-51. |
| [2] | 宁晓钧,尹振江,易操,朱荣,董凯.利用CO2减少炼钢烟尘的实验研究[J].炼钢,2009(05):32-34. |
| [3] | 杨晓东,张玲.钢铁工业温室气体排放与减排[J].钢铁,2003(07):65-69. |
| [4] | 尹振江,朱荣,易操,陈伯瑜,汪灿荣,柯建祥.应用COMI炼钢工艺控制转炉烟尘基础研究[J].钢铁,2009(10):92-94. |
| [5] | 吕明,朱荣,毕秀荣,魏宁,汪灿荣,柯建祥.应用COMI炼钢工艺控制转炉脱磷基础研究[J].钢铁,2011(08):31-35. |
| [6] | 毕秀荣,朱荣,吕明,刘润藻.CO2-O2混合喷吹炼钢烟尘形成机理的探索性研究[J].冶金设备,2011(03):21-24. |
| [7] | 程相利,张俊,严定鎏,齐渊洪,高建军.CO2炼钢对氧气高炉循环煤气的改质及加热[J].钢铁,2014(6):8-11. |
| [8] | 盖东兴.喷吹CO2作为冷却剂的转炉炼钢工艺探索[J].炼钢,2012(04):40-42,58. |
| [9] | 王志强.CO2气体保护焊在高炉炉壳焊接中的应用[J].电焊机,2002(12):39-41. |
| [10] | 张慧书,战东平,姜周华,陈兆平,沈海军,张戈.直流钢包炉中空电极喷吹Ar-CO2对钢水温度的影响[J].工业炉,2009(05):1-4. |
| [11] | 谷云岭,朱荣,吕明,陈列,刘润藻,尚大军.LF精炼炉底吹CO2气体的工业探索性研究[J].钢铁,2013(08):34-39. |
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