摘要
铁水脱钛预处理的目的是为了预先降低铁水中的Ti含量,减轻炼钢过程中脱Ti的任务,使成品钢中Ti含量进一步降低,以此来满足如轴承钢、弹簧钢等低钛钢种的质量要求。研究了采用铁精粉作为脱钛剂进行铁水脱钛的技术开发和实际应用问题。首先利用500kg感应炉进行了实验室热模拟实验。结果表明,脱钛率平均为68.70%,最高脱钛率为83.60%。在此基础上,开发了用铁精粉进行机械搅拌脱钛新工艺,并成功应用到工业生产中,取得了脱钛率为86.64%的良好效果。还对脱钛过程中伴随的Si、Mn、C等元素的氧化行为进行分析研究,证明了铁精粉脱钛新工艺的可行性和先进性。
In order to meet the low titanium steel grades production, the titanium content in the molten iron need to be reduced in advance for detitanization task in the steelmaking process, so that the ultimate titanium content can achieve chemical composition requirement of low-titanium steel products such as bearing steel, spring steel, et al. The new technology and application of titanium removal from molten iron by adding iron powder into the ladle was studied. Firstly, the test result of thermal simulation in 500kg intermediate frequency induction furnace shows that the average rate of titanium removal could reach 68.7% while the maximum rate could reach 83.6%. On this basis, the new technology of titanium removal by iron powder using mechanical stirring was developed and successfully ap- plied to industrial production. The titanium removal rate could reach 86.64%. Correspondingly, the oxidation be- havior of silicon, manganese, and carbon elements associated with titanium removal process was also analyzed to prove the feasibility and advance of this new technology.
出处
《中国冶金》
CAS
2014年第10期16-21,共6页
China Metallurgy
关键词
铁水预处理
脱钛
铁精粉
pretreatment of hot metal
titanium removal
iron powder
