膨润土对压入修补料性能的影响  

Effect of bentonite on properties of injection repairing mix

作　　者：李志辉[1] 李志坚[1] 窦叔菊[1] 

机构地区：[1]辽宁科技大学材料科学与工程学院,鞍山114051

出　　处：《耐火材料》2008年第2期133-134,138,共3页Refractories

摘　　要：在高铝矾土和焦炭的质量分数固定为60％和20％的条件下，分别引入质量分数为0、2％、4％和6％的膨润土部分代替结合黏土，外加20％的热塑性酚醛树脂制成试样。试样干燥后，经1000℃埋炭处理，检测其常温耐压强度、高温抗折强度、碱金属侵蚀前后的线变化率、粘结强度和泥料的流动性，以研究膨润土对压入修补料性能的影响。结果表明，在压入修补料中引入膨润土有助于提高其烧结性能、粘结强度、抗碱金属侵蚀性能和施工性能．膨润土最佳加入量为2％～4％。The specimens were prepared keeping high alumina bauxite addition at 60% and coke addition at 20%, with 0,2% ,4% and 6% bentonite replacing the same quantity of partial binding clay respectively,additionally adding 20% thermoplastic phenolic resin,drying,then carbon-embedded firing at 1 000 ℃. Cold crush- ing strength, hot modulus of rupture, linear change rate before and after alkali erosion, adhesive strength of the specimens and slurry flowability were tested to research bentonite＇ s effect on properties of injection repairing mix. The results show that adding bentonite in injection repairing mix is helpful to improve the sinte-ring ,adhesive strength ,corrosion resistance to alkali and workability, and the appropriate addition of ben-tonite is 2% -4%.

关 键 词：高炉 压入修补料 膨润土 烧结性能 粘结强度 抗侵蚀性 

分 类 号：TQ175.732[化学工程—硅酸盐工业] TF046.4[冶金工程—冶金物理化学]