不同粒度锌铝尖晶石加入量对方镁石-锌铝尖晶石性能的影响  

Effect of different particle sizes zinc alumina spinel addition on properties of periclase-zinc alumina spinel

作　　者：谢永涣 田琳 毛硕 马淑龙 吴师岗[3] 李国华 Xie Yonghuan;Tian Lin;Mao Shuo;Ma Shulong;Wu Shigang;Li Guohua(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China;不详)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [2]北京金隅通达耐火技术有限公司,北京100041 [3]山东理工大学材料科学与工程学院,山东淄博255049

出　　处：《耐火材料》2023年第2期149-152,共4页Refractories

基　　金：淄博市重点研发计划(市内校城融合2021SNPT0004)。

摘　　要：以高纯镁砂(5~0.074、≤0.074 mm)为主要原料,分别以烧结法合成的锌铝尖晶石颗粒(5~0.074 mm)和细粉(≤0.074 mm)取代相应粒度的高纯镁砂,制备了方镁石-锌铝尖晶石试样,分别研究了锌铝尖晶石颗粒(加入质量分数分别为10%、15%和20%)和细粉(加入质量分数分别为5%、10%和15%)的引入量对试样性能的影响,并与市售的铁铝尖晶石砖的性能作对比。结果表明:1)随锌铝尖晶石颗粒引入量的增加,试样的显气孔率增大,体积密度和常温耐压强度降低,抗热震性能稍有提高;2)随锌铝尖晶石细粉引入量的增加,试样的常温物理性能和抗热震性能均有提高;3)当锌铝尖晶石以10%(w)颗粒料或5%~10%(w)细粉料引入时,其抗侵蚀性能均优于目前水泥窑使用铁铝尖晶石砖的。综合来看,锌铝尖晶石以5%(w)细粉形式引入的试样性能最好。Periclase-zinc alumina spinel specimens were prepared using high-purity magnesia(5-0.074 and≤0.074 mm)as the main raw material,replacing the high-purity magnesia with zinc alumina spinel particles(5-0.074 mm)and the fine powders(≤0.074 mm)synthesized by the sintering method.Effects of the zinc alumina spinel particles addition(10%,15%and 20%,by mass)or fine powder addition(5%,10%and 15%,by mass)on the properties of the specimens were studied.Their properties were compared with those of commercial hercynite bricks,respectively.The results show that:(1)with the increase of the zinc alumina spinel particles addition,the apparent porosity of the specimens increases,the bulk density and the cold crushing strength decrease,and the thermal shock resistance slightly improves;(2)with the increase of the zinc alumina spinel fine powder addition,the cold physical properties and the thermal shock resistance of the specimens increase;(3)when zinc alumina spinel is introduced as 10%particles or 5%-10%fine powder,the corrosion resistance of the specimens is better than that of the hercynite brick used in cement kiln at present.In summary,the specimens with 5%zinc alumina spinel fine powder have the best performance.

关 键 词：锌铝尖晶石 高纯镁砂 方镁石-锌铝尖晶石砖 铁铝尖晶石砖 抗侵蚀性 

分 类 号：TQ175[化学工程—硅酸盐工业]