含铌钢水使用Al-Ca合金还原脱磷的试验研究  

Study on reductive dephosphorization of hot molten steel containing Nb by addition of Al-Ca alloy

作　　者：孙勇[1] 徐掌印[1] 魏延[1] 

机构地区：[1]内蒙古科技大学内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室省部共建国家重点实验室培养基地

出　　处：《内蒙古科技大学学报》2015年第2期109-111,126,共4页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金项目资助(51164024);内蒙古自然科学基金项目资助(2013MS0716)

摘　　要：在20 kg真空感应电炉内用铝钙合金对含铌钢水进行了还原脱磷试验,脱磷温度为1 823 K,充入氩气保护,炉内压力66 k Pa,采用插入法加入脱磷剂,研究了脱磷剂加入量对脱磷率和钢水成分的变化的影响.试验结果表明：可使含铌钢水中磷的质量分数降低到0.022%,脱磷率为79.4%,硫降低到14×10-6,脱磷过程中铌含量不变.At the temperature of 1 823K,the test of reductive dephosphorization was carried out on the hot molten steel containing Nb with A1-Ca alloy in a 20 kg vacuum induction furnace ,which was filled with Ar to keep a furnace pressure of 66 kPa. Inserting method was adopted to add the dephosphorization agent into the molten steel. The influence of the adding amount of dephosphorization agent on the dephosphorization rate and the composition of molten steel was investigated. The test results show that in the molten steel containing Nb, phosphorus content can be reduced to 0. 022% ,dephosphorization rate is 79.4% ,and the sulphur content can be reduced to 14 x 10-6; Nb content remains the same during the dephosphorization process.

关 键 词：还原脱磷 含铌钢水 铝钙合金 

分 类 号：TF704.4[冶金工程—钢铁冶金]