二氧化硅微粉对中频炉碱性炉衬性能的影响  

Effect of Microsilica on Properties of Basic Lining of Medium Frequency Furnace

作　　者：贾江议[1] 杨雪瑞[1] 王爱琴[1,2] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471003

出　　处：《铸造》2010年第7期662-664,共3页Foundry

摘　　要：本试验以镁砂作为主要原料,硅微粉为烧结剂,三聚磷酸钠为减水剂。镁砂最大颗粒粒径为5mm,采用连续颗粒级配:5～3mm,3～1mm,1～0mm,≤0.088mm进行配比,试样烘干条件为110℃×24h,分别在1100℃×3h及1450℃×3h条件下烧成。考察了不同二氧化硅微粉加入量时,试样的物理性能和力学性能。结果表明:加入5%的二氧化硅微粉能显著改善镁质干式料的综合烧结性能;当二氧化硅微粉的加入量小于或者大于5%时,材料的性能变坏。In this experiment,magnesia was used as main raw material,microsilica as the sintering agent,and trimeric sodium phosphate as the water reducing agent. The biggest size of magnesia grain is 5 mm,and the gradation was 5-3 mm,3-1 mm,1-0 mm and ≤0.088 mm. The samples were sintered at 1 100 ℃ for 3 h and 1 450 ℃ for 3 h,respectively after drying at 110 ℃ for 24 h. The physical and mechanical properties of the samples with the different additions of microsilica were investigated. The experiment result shows that the appropriate addition of microsilica is 5%,and the comprehensive properties of the material become worse as the content of microsilica is either less or more than 5%.

关 键 词：二氧化硅微粉 中频炉 碱性炉衬 

分 类 号：TF065.1[冶金工程—冶金物理化学]