120 t转炉半钢增硅热补偿技术研究及应用
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摘要
针对攀钢钒采用半钢冶炼热源不足带来的终点碳偏低、终渣TFe含量高及捞渣烟尘大的问题,提出在提钒转炉出半钢时加入硅铁对半钢进行化学热补偿的炼钢新工艺,并通过对工艺参数的研究和优化,实现了工业应用。应用效果表明,增硅新工艺减少了转炉兑半钢时碳的烧损以及过程温降,提高了半钢炼钢转炉热源,半钢质量更为稳定,使得中高碳钢终点钢水碳含量在0. 07%～0. 12%的比例由32. 2%大幅度提高到92. 38%;重轨钢终渣TFe由19. 9%降低到18. 62%,Q系列钢终渣TFe由20. 85%降低到18. 89%;且新工艺的应用明显缓解了提钒捞渣烟尘大的问题,具有明显的环保效益。
To solve the problem of low carbon content at the endpoint,high TFe and heavy smoke during dredging,new steelmaking process is put forward which by adding the silicon to semi-steel to thermal compensation. By researching and optimizing the process parameters, the new steelmaking process was industrial applied. Application effect indicated that the new process could reduce the carbon burning and temperature drop during charging semi-steel, and the heat and quality of semi-steel was improved, the proportion of carbon content at the endpoint of rail steel between 0. 07% ～0. 12% was increased sharply from 32. 2% to 92. 38%, TFe in slag of rail steel reduced from 19. 9% to 18. 62%, while carbon-steel reduced from 20. 85% to 18. 89%. In addition, the new process greatly reduced the problem of heavy smoking during vanadium slag picking up process, which has obviously benefit of environmental protection.
To solve the problem of low carbon content at the endpoint,high TFe and heavy smoke during dredging,new steelmaking process is put forward which by adding the silicon to semi-steel to thermal compensation. By researching and optimizing the process parameters, the new steelmaking process was industrial applied. Application effect indicated that the new process could reduce the carbon burning and temperature drop during charging semi-steel, and the heat and quality of semi-steel was improved, the proportion of carbon content at the endpoint of rail steel between 0. 07% ～0. 12% was increased sharply from 32. 2% to 92. 38%, TFe in slag of rail steel reduced from 19. 9% to 18. 62%, while carbon-steel reduced from 20. 85% to 18. 89%. In addition, the new process greatly reduced the problem of heavy smoking during vanadium slag picking up process, which has obviously benefit of environmental protection.
引文
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[10]袁章福,万天骥,李华.转炉炼钢热补偿技术[J].炼钢,1991(3):44-49.
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