长寿中频炉工作衬用铝镁质捣打料的研制与应用  

Development and application of Al_2O_3-MgO ramming mix for working lining of long life medium frequency induction furnace

作　　者：王秉军 刘开琪 高飞 丁钰 刘永锋 赵宏伟 杨粉荣 

机构地区：[1]中国钢研科技集团有限公司特种陶瓷与耐火材料北京市重点实验室,北京100081

出　　处：《耐火材料》2012年第6期452-455,共4页Refractories

摘　　要：为了研制高质量的中频感应炉用干式捣打料,以棕刚玉、白刚玉、板状刚玉、镁砂为主要原料,通过颗粒级配和复合高温促烧剂的调整,研制中频炉工作衬用铝镁质干式捣打料。结果表明:研制干式捣打料的最佳配比(w)为:1～0.1 mm的白刚玉、板状刚玉和电熔镁砂分别为14%、14%和6%,≤0.1 mm的电熔镁砂和刚玉细粉为22%,≤0.005 mm的复合高温促烧剂2%。这种捣打料分别在某厂8和20 t中频炉试用,用后没有明显的裂纹产生,使用寿命长,完全满足了生产需要。Al2O3-MgO dry ramming mix for medium frequency induction furnace was prepared using brown corundum ,white corundum ,tabular corundum and magnesia as main starting materials,adjusting the particle size composition and composite high temperature sintering aids. The results show that the optimal formulation （in mass） of dry ramming mix is 42% brown corundum and white corundum （6-1 mm）,14% white corundum （1-0.1 mm）,14% tabular corundum （1-0.1 mm）,6% fused magnesia （1-0.1 mm）,22% fused magnesia and corundum （ ≤ 0. 1 mm）, 2% composite high temperature sintering aids （ ≤ 0.005 mm）. After used in an 8 t and a 20 t medium frequency furnaces,the ramming mix performs long life without obvious cracks,fully meets the production requirements.

关 键 词：中频炉 工作衬 干式捣打料 颗粒级配 促烧剂 

分 类 号：TQ175.73[化学工程—硅酸盐工业]