镁碳砖MT-14A在GOR转炉炉底的应用研究  

Study on the application of magnesia-carbon brick MT-14A in GOR converter bottom

作　　者：李英 陶玉婷 曹俊庆 郑连营 曹大力[3] Li Ying;Tao Yuting;Cao Junqing;Zheng Lianying;Cao Dali(Haicheng Houying Group,Haicheng 114200,China;Liaoning Qinghua Refractory Material Co.,Ltd.,Dashiqiao 115100,China;School of Materials Science and Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]海城后英集团,海城114200 [2]辽宁青花耐火材料有限公司,大石桥115100 [3]沈阳化工学院材料科学与工程学院,沈阳110142

出　　处：《耐火与石灰》2018年第1期17-20,共4页Refractories & Lime

摘　　要：对镁碳砖MT-14A在65t GOR转炉炉底的使用情况进行了论述,并对寿命较低的炉底砖进行取样分析。研究表明,1 000mm长镁碳砖最高使用炉龄为62次,平均炉龄50次左右;800mm长镁碳砖最高使用炉龄为41次,平均炉龄不足30次。镁碳砖MT-14A在使用过程中出现了断砖现象,不是最理想的GOR炉底材料。其损毁机理是热冲击损伤及工作面电熔镁熔损和脱碳反应。This paper described the application of magnesia-carbon brick MT-14A in 65T GOR converter bottom and analyzed the sample bricks at the bottom of shorter service life.The results showed that the longest furnace life using 1 000mm-long magnesia-carbon brick MT-14A is 62 times and the average life is 50 times,and that using 800mm-long magnesia-carbon brick MT-14A is 41 times and the average life is less than 30 times.It’s also found that the magnesia-carbon brick MT-14A got fractured in service and proved not a suitable material to be employed in GOR converter bottom since the damage mechanism of MT-14A is melting loss of fused-magnesite and decar-bonization in working surface.

关 键 词：镁碳砖 GOR炉 炉底砖 损毁机理 

分 类 号：TQ175.71[化学工程—硅酸盐工业]