Research on Copper Matte Corrosion to Periclase-spinel Refractories

查看全文 作　　者：LIU [1,2]Xiongzhang;LI [3]Yong;ZHONG [1]Xiangchong;YANG [2]Xiuli 机构地区：[1]High Temperature Ceramics Institute,Zhengzhou Universitv,Zhengzhou 450052, China;[2]Sinosteel Refractories Co. , Ltd. , Luoyang 471039, China;[3]School of Materials Science and Engineering, University of Science and Technology Beijing,Beijing 100081 ,China 出　　处：《China's Refractories》索引2010年第19卷第1期,共5页 摘　　要：Effects of TiO2 or ZrO2 addition on corrosion resistance of periclase-spinel refractories to copper matte at different temperatures were investigated using static crucible method,and the results were compared with those of fused rebonded magnesite-chrome bricks.The changes in chemical compositions and microstructure in different zones of the specimens after corrosion tests were studied by means of EDAX and SEM.The results show that:(1)the reaction between periclase-spinel refractories and copper matte is very weak with the reaction layer thinner than 1 mm.Penetration is the main cause of copper matte corrosion and the penetration depth increases with temperature rising.When temperature exceeds 1 200 ℃,the penetration depth increases significantly;(2)appropriate TiO2 addition can improve penetration resistance(even better than that of magnesia chrome brick),the optimum addition is 2%.But ZrO2 has no remarkable effect on penetration resistance to copper matte of periclase-spinel refractories;(3)SEM and EDAX analysis indicates that,Cu2S penetrates much further into the specimens than FeS. 关 键 词：耐火材料 方镁石 尖晶石 铜腐蚀 冰铜 穿透深度 二氧化钛 扫描电镜