【作者】 谢毓敏； 宋明明； 宋波； 曹敏； 薛正良； 徐润生；

【Author】 Xie Yumin;Song Mingming;Song Bo;Cao Min;Xue Zhengliang;Xu Runsheng;Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology;The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology;School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing;

【机构】 武汉科技大学耐火材料与冶金国家重点实验室； 武汉科技大学钢铁冶金与资源综合利用省部共建教育部重点实验室； 北京科技大学冶金与生态工程学院；

【摘要】 电铝热法生产FeV80渣线部位炉衬分为三层:第一个是挂渣层,主要物相有MgO·Al₂O₃、Al₂O₃和12CaO·7Al₂O₃;第二是反应层,主要包括MgO·Al₂O₃和Ca-Al-O;最后一个是渗透层,其主要组成物相是MgO、Ca-Al-O和Ca-Al-Mg-O。反应层中液态炉渣与MgO反应形成了大块状的MgO·Al₂O₃及较大的间隙,使液态炉渣在反应层中的传递变得容易。在渗透层中有少量的液态渣渗入,镁砂颗粒保持着很紧密的接触,液态炉渣沿镁砂颗粒呈网状分布。MgO进入炉渣主要是由于反应层MgO·Al₂O₃间填充的液态炉渣造成了炉衬的软化,大大降低了镁砂捣打炉衬的强度,在热应力、机械力等作用时,炉衬中大量的高熔点MgO·Al₂O₃相很容易通过挂渣层进入渣中,恶化FeV80冶炼工艺。更多还原

【Abstract】 The lining of the furnace producing FeV80 alloy is divided into three layers in the parts near slag line: The first layer is the slag adhesion, in which the main contents of the slag layer are MgO·Al₂O₃, Al₂O₃ and 12 CaO·7 Al₂O₃. The second is the reaction layer mainly including MgO·Al₂O₃ and Ca-Al-O. And the last is the permeation layer mainly component of MgO, Ca-Al-O and Ca-Al-Mg-O. In the reaction layer, the liquid slag can react with MgO to form the large MgO. Al₂O₃ lumpy and the larger clearance, which makes the transfer of liquid slag in the reaction layer easily. In the permeable layer, there is a small amount of liquid slag. The magnesia particles contacted closely, and the slag along the magnesia particles is distributed in a network. MgO get into the slag easily, it is mainly caused by the thermal stress and mechanical force on the loose lining with large MgO. Al₂O₃ lumpy filled by liquid slag, which reduce the strength of magnesia ramming furnace lining obviously and deteriorating the smelting process of FeV80 alloy.更多还原