影响连铸钢包自开率因素的分析  

Analysis of Factors Affecting Self-Opening Rate of Continuous Casting Ladle

作　　者：康铭 杨杰 孔令种 徐东 郑冰[1,2] 郭龙鑫 KANG Ming;YANG Jie;KONG Ling-zhong;XU Dong;ZHENG Bing;GUO Long-xin(College of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051;Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province,Hebei University of Engineering,Handan 056038;Technology Innovation Center for Wear Resistant Steel Plate of High Plasticity and High Toughness of Hebei Province,Hebei Puyang Iron and Steel Corp Ltd,Handan 056305)

机构地区：[1]辽宁科技大学材料与冶金学院,鞍山114051 [2]河北工程大学河北省高品质冷镦钢技术创新中心,邯郸056038 [3]河北普阳钢铁集团河北省高塑韧性耐磨钢板技术创新中心,邯郸056305

出　　处：《特殊钢》2022年第3期1-6,共6页Special Steel

基　　金：辽宁省重大科技专项计划项目(2020JH1/1010001);国家自然科学基金项目(U20A20272、52174317);河北省钢铁联合基金(E2020402016)资助。

摘　　要：钢包自开是影响连铸顺行的关键环节,同时也是影响钢液洁净度的重要因素。钢包无法自开则需烧氧引流,破坏烧结层,会导致钢液大量增氧,严重降低钢液洁净度。为了提高钢包自开率以改善钢液洁净度,总结了引流砂种类、粒度、含水量、填加剂、填加方式、水口座砖形状特点以及引流砂与钢液反应等因素对钢包自开率的影响,其中粒度在0.5~1.4 mm,并且含有适量的圆角粗颗粒、填加剂石墨的含量为2%-4%、含水量低于0.15%的引流砂开浇率较高。The ladle self-opening is a key step that affects the smooth running of continuous casting.Meantime,it is an important factor that affects the cleanliness of molten steel.If the ladle can not be opened by itself,it will have to use oxygen lance for introducing liquid flowing to destroy the sintered layer,but this will lead to a large amount of oxygenation of steel and seriously damage the cleanliness of the molten steel.In order to improve the cleanliness of molten steel by increasing ladle self-opening rate,the influences of filler sand types,particle sizes,water content,additives,adding methods,shape characteristics of nozzle base brick and the reaction between filler sand and molten steel on the self-opening rate of ladle are summarized,among them,the filler sand with particle size is 0.5~1.4 mm contained appropriate amount of coarse rounded particles,filler graphite content 2%~4%and water content less than 0.15%has a higher opening rate.

关 键 词：引流砂 滑动水口 钢包 自开率 

分 类 号：TF777[冶金工程—钢铁冶金]