Abstracts Selected from Naihuo Cailiao (Befractories) --A Bimonthly in Chinese  

出　　处：《China's Refractories》2022年第3期48-54,共7页中国耐火材料（英文版）

摘　　要：Effect of submicron Si0_(2) powder on properties of cementfree iron trough castanles/Cheng Shuiming. Zhao Huizhong,WeiJaniu.ChenJinfeng. Cai Wei/Naihuo Cli.0-2022 56(1):1Austract: A new cement fre iron trough castable was preparedwith dense corundum and silicon carbide as the main raw mateilsand submicron SiO_(2) powder (d_(50)=0.242 um,99.9 mass% SiO_(2))as the binder.The efect of the submicpon SiO_(2) powder addition(3%,4%,5%,6%,7%,8%,and 9% ,by mass,espectively) on the :properties of the prepared castables was studied.The workingmechanism of submicron SiO_(2) powder was analyzed from theperspectives of the particle size distribution and infrared absorptionspecrum.The results show that:(1)cement free iron trough castablescan be prepared using submicron SiO_(2) powder alone as the binder;(2)compared with taditional castables,the cement free castables havemade a breathrough in the water addition and the hot modulus ofrupture.The optimal submicron SiO_(2) powder aditionis 4%- 6%.

关 键 词：CEMENT TABLES POWDER 

分 类 号：TQ175.1[化学工程—硅酸盐工业]