中间包碱性干式振动料的研制与使用

Development and application of basic dry vibration mix for tundish

以电熔镁砂或中档镁砂为主原料(骨料与基质料的质量比为65∶35),研究了有机结合剂、烧结剂以及改性剂的种类和数量对碱性干式振动料性能的影响。结果表明:分别以电熔镁砂或烧结中档镁砂为主原料,加入6%的酚醛树脂结合剂JA,2%的偏磷酸盐烧结剂SA和3%的含Al2O3的改性剂GB,研制的碱性干式振动料使用性能优良,并在多家钢厂的中间包上得到成功试用,最高使用寿命达55h,能较好地满足中间包长寿化的要求。

Basic dry vibration mix was prepared with electro fused magnesite and dead burned magnesite as main starting materials. Effects of varieties and amounts of binder, sintering aids and modifier on properties of the mix were investigated. The results indicate that.the dry vibration mix with 6% phenolic resin binder,2% metaphosphate（as sintering aids） and 3% modifier had better service performance. The developed dry vibration mix with electro fused magnesite and dead burned magnesite were tested successful in several steel works,and the max service life was 55 h.