Effect of Submicron SiO_(2) Powder Addition on Properties of Cement Free Iron Trough Castables

查看全文 作　　者：CHENG [1,2]Shuiming;CHEN [1]Jinfeng;WEI [1]Jianxiu;CAI [1]Wei;ZHAO [2]Huizhong

机构地区：[1]Wuhan Research Institute of Metallurgy Construction Co.,Ltd.of MCC Group,Wuhan 430081,China;[2]The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China

出　　处：《China's Refractories》索引2022年第31卷第3期,共5页

基　　金：support from the National Natural Science Foundation of China(NSFC,No.51804233)。 摘　　要：A new cement free iron trough castable was prepared with dense corundum and silicon carbide as the main raw materials and submicron SiO_(2) powder(d_(50)=0.242μm,SiO_(2)=99.9 mass%)as the binder.The effect of the submicron SiO_(2) powder addition(3%,4%,5%,6%,7%,8%,and 9%,by mass,respectively)on the properties of the prepared castables was studied.The working mechanism of submicron SiO_(2) powder was analyzed from the perspective of the particle size distribution and infrared absorption spectrum.The results show that:(1)cement free iron trough castables can be prepared using submicron SiO_(2) powder alone as the binder;(2)compared with traditional castables,the cement free castables have made a breakthrough in the water addition and hot modulus of rupture.The optimal submicron SiO_(2) powder addition is 4%-6%. 关键词：iron trough castable cement free submicron SiO_(2)powder microstructure

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Effect of Submicron SiO_(2) Powder Addition on Properties of Cement Free Iron Trough Castables

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