无氟保护渣对结晶器传热速率的影响  

Effect of fluorine-free mold powder on heat transfer rate of CCM

作　　者：蔡得祥[1] 张晨[1] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900

出　　处：《内蒙古科技大学学报》2012年第3期247-249,261,共4页Journal of Inner Mongolia University of Science and Technology

摘　　要：采用红外高温发射测温设备,开展了低碳钢用含氟和无氟保护渣对结晶器传热速率的影响研究.实验室和现场试验结果表明,无氟保护渣比含氟保护渣具有更高的传热速率,含氟保护渣固态结晶层渣膜厚度要明显大于无氟保护渣.X衍射试验分析显示,含氟渣析出晶体主要为枪晶石,无氟渣主要为硼硅酸钙和易变硅钙石.The effect of fluorine-free and fluorine mold powder for low carbon steel on heat transfer rate of CCM was developed using the infrared emitter technique. Laboratory and site test result shows that fluorine-free mold power has bigger heat transfer rate and thinner solidified crystalline flux film than the fluorine powder. X-ray diffraction analysis shows that the crystallite of fluorine mold powder is mainly cuspidine （3CaO . 2SIO2 . CaF2 ） , and the other fluorine-free mold powder is calcium borate silicate （11 CaO . 4SiO2 . B203 ） and tacharanite （12CaO . A1203 . 18SIO2）.

关 键 词：保护渣 无氟 传热 结晶 

分 类 号：TF777[冶金工程—钢铁冶金]