高炉钛矿护炉的机理研究  

Study on Protection Mechanism of Titanium-Bearing in Blast Furnace Hearth

作　　者：李永全[1] Yun Li R J Fruehan 

机构地区：[1]宝钢股份公司技术中心,上海201900 [2]卡内基梅隆大学

出　　处：《宝钢技术》2002年第1期12-16,共5页Baosteel Technology

摘　　要：从热力学和热模拟试验两方面研究了碳饱和铁浴内Ti(C ,N)的生成机理。利用CONFOCAL激光高温显微镜的试验数据重新确定了Ti在碳饱和铁浴内的溶解度和Ti(C ,N)形成所需的最低Ti含量。结果表明在碳饱和铁浴内生成碳化钛和氮化钛的最低Ti含量较采用现行热力学数据的计算值要低。采用长坩埚法研究了不同温度梯度条件下Ti(C ,N)的形成 ,发现Ti(C ,N)A Confocal laser microscope and a long crucible experiment were used for in situ observation and mechanism study of the formation of Ti(C,N) crystals from hot metal bath under controlled conditions.The solubility of Ti in the system of Fe Csat Ti is modified by the experiment results.Confocal laser microscope is used to check the minimum titanium concentration for the formation of Ti(C,N) in the systems of Fe Csat Ti N.Results showed that the minimum titanium concentrations to form TiC and Ti(C,N) are lower than that of previously calculated.Meanwhile a long crucible experiment was performed to study the formation of Ti(C,N) under the condition of a large temperature gradient.It was found that crystals of Ti(C,N) were formed and preferably agglomerated at the interface between hot metal and the crucible in the low temperature zone.

关 键 词：碳饱和铁浴 高炉 炼铁 钛矿 护炉 

分 类 号：TF54[冶金工程—钢铁冶金]