钙稳定氧化锆的加入对水泥窑用镁钙锆砖性能的影响  

Effect of calcium-stabilized zirconium oxide on the performance of MgO-CaO-ZrO_(2)bricks in cement kiln

作　　者：历彦平 戴晨晨[2] 王娅丽 Li Yanping;Dai Chenchen;Wang Yali(Liaoning Zhongmei High Temperature Material Co.,Ltd.,Yingkou 115100,China;Yingkou Institute of Technology,Yingkou 115100,China;Liaoning Qinghua Refractory Co.,Ltd.,Yingkou 115100,China)

机构地区：[1]辽宁中镁高温材料有限公司,营口115100 [2]营口理工学院,营口115100 [3]辽宁青花耐火材料股份有限公司,营口115100

出　　处：《耐火与石灰》2023年第5期26-28,共3页Refractories & Lime

摘　　要：镁钙砖在水泥窑烧成带上使用时具有良好的挂窑皮性能,但是在停窑检修或突然升降温时,镁钙砖和窑皮之间容易出现开裂及剥落现象,影响其使用寿命。而以镁钙砂、高纯镁砂为主要原料,并加入钙稳定氧化锆,通过破碎、筛分、配料、混料等工艺由液压机在2500 t的压力下压制成镁钙锆砖坯,且在1580℃下于隧道窑中烧成,制得了镁钙锆砖。由于在配料中加入了钙稳定氧化锆,提高了镁钙锆砖的常温性能、抗水化性及热震稳定性,也提高了镁钙锆砖挂窑皮的稳定性。试验表明:当钙稳定氧化锆加入量为3%时,其性能最佳。Magnesium and calcium brick has good performance of coat adhesion performance when used on the cement kiln combustion zone,but when the kiln is stopped for maintenance or the temperature rises and falls suddenly,cracks and spalling are easy to occur between the MgO-CaO brick and the kiln crust,affecting its service life.MgO-CaO-ZrO_(2)bricks are prepared by taking MgO-CaO clinker and high purity magnesia as the main raw materials,adding calcium stabilized zirconia,pressing magnesium calcium zirconium bricks by hydraulic press under the pressure of 2500 t through crushing,screening,batching,mixing and other processes,and firing them in tunnel kiln at 1580℃.Because calcium-stabilized zirconia is added to the ingredients,the normal temperature performance,hydration resistance and thermal shock stability of MgO-CaOZrO_(2)bricks are improved,and the stability of coat adhesion performance of MgO-CaO-ZrO_(2)bricks is also improved.The test shows that when the addition of calcium stabilized zirconia is 3%,its performance is the best.

关 键 词：钙稳定氧化锆 镁钙锆砖 水泥窑 性能 

分 类 号：TQ175.731[化学工程—硅酸盐工业]