二氧化硅微粉对镁质浇注料的性能影响研究  

STUDY EFFECT OF MICROSILICA ON PROPERTIES OF MAGNESIUM CASTABLE

作　　者：贾江议[1] 许荣辉[1] 

机构地区：[1]河南科技大学

出　　处：《河南冶金》2013年第3期9-11,共3页Henan Metallurgy

摘　　要：实验以镁砂作为主要原料,硅微粉为结合剂,研究了硅微粉的加入量对镁质浇注料性能的影响。在110℃×24 h烘干,1100℃×3 h、1500℃×3 h烧成制度下,通过改变硅微粉的加入量,测试和分析了试样的物理性能。结果表明:110℃×24 h,3%二氧化硅微粉的加入可明显改善镁质浇注料的性能,体积密度和耐压强度最大:2.78 g/cm3和53 MPa;1100℃×3 h条件下,二氧化硅微粉的加入对镁质浇注料的性能改善不明显;1550℃×3 h条件下,由于材料的烧结作用,体积密度和耐压强度普遍提高,试样的侵蚀指数随二氧化硅微粉加入量的增大而增大。In this experiment, magnesium is used as main raw materials, microsilica as the binder. Effect of microsilica addition on properties of MgO castable is investigated The samples are sintered at 110 ℃for 24 hours,1100℃for 3 hours and 1550 ℃for 3 hours. We investigated and tested properties of the samples with the different addition microsilica. The ex- periment shows that 3% addition of microsilica can remarkably improve properties of MgO castable at 110 ℃ for 24 hours, Bulk density and cold crushing strength are biggest,Such as 2.78 g/cm3 and 53 MPa. At 1100 ℃for 3 hours,microsilica can not remarkably improve properties of MgO castable. At 1550 ℃for 3 hours,Bulk density and cold crushing strength are improved because of sintering, Penetrate exponential is least with 3% microsilica, Corrade exponential is increase with mi- crosilica addition increasing.

关 键 词：镁砂 二氧化硅微粉 镁质浇注料 

分 类 号：TQ175.732[化学工程—硅酸盐工业]