RH用低氟型CaO＋Al2O3基熔剂深脱硫工业试验  

Industrial Experiment on Desulphurization in RH Process by Using CaO+Al_2O3 Based Fluxes with Low Fluoride

作　　者：郭上型[1] 王建军[1] 周俐[1] 李青云[1] 张才贵[2] 

机构地区：[1]安徽工业大学冶金与资源学院,安徽马鞍山243002 [2]梅山钢铁股份有限公司,江苏南京210039

出　　处：《钢铁钒钛》2009年第2期46-49,共4页Iron Steel Vanadium Titanium

摘　　要：采用低氟型CaO＋A l2O3复合基熔剂替代传统CaO-CaF2系脱硫剂,利用RH投入法进行钢液深脱硫工业试验。20个试验炉次的结果表明,RH平均脱硫率ηS可达到53.44%,脱硫后钢液中[S]≤24×10^-6。分析了钢包顶渣的改性处理以及RH脱硫终渣组成对RH脱硫的影响。在此基础上,确定了RH脱硫剂的优化组成为：CaO＋BaO（60%-65%）？A l2O3（20%-25%）-MgO（5%-7%）？CaF2（〈5%）。The industrial experiments on deep desulphurization by using （CaO ＋ Al2O3 ） complex based fluxes instead of conventional CaO - CaF2 fluxes were carried out through flux addition in RH process. The results show that the average De - S rate of 53.44% has been achieved and the sulphur content in molten steel after RH refining is cut down to less than 24 × 10 ^-6. The influence of modification treatment of the ladle top slag and final slag composition at the end of RH treatment on De - S is analyzed. The optimum composition of De - S agent is determined to be CaO ＋ BaO（60% - 65% ） - Al2O3 （20% -25% ） -MgO（5% -7%） -CaF2（〈5%）.

关 键 词：RH 钢包渣改性 脱硫剂 CaO+Al2O3 

分 类 号：TF769.4[冶金工程—钢铁冶金]