80t转炉提高废钢比的生产实践与炉况维护  

Production practice and furnace condition maintenance of 80 t converter to increase scrap ratio

作　　者：金磊 司宇 栗克建 JIN Lei;SI Yu;LI Ke-jian(Profiles Materials Manufacturing Department Rizhao Steel Co.,Ltd.,Rizhao 276806,Shandong,China;School of Metallurgy and Materials Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]日照钢铁有限公司型材制造部,山东日照276806 [2]重庆科技学院冶金与材料工程学院,重庆401331

出　　处：《连铸》2021年第1期21-25,共5页Continuous Casting

基　　金：重庆市教育委员会科学技术研究资助项目(KJQN201901515);重庆市高校创新研究群体资助项目(CXQT19031)。

摘　　要：转炉炼钢的主要原材料为废钢和铁水,由于国内外铁矿资源和优质焦煤资源的不断消耗以及节能减排的要求愈发严格,导致高炉铁水的生产成本提高,而废钢价格逐渐降低,故通过提高废钢比,降低铁水消耗量,以实现降低转炉炼钢消耗成本的目的。废钢提量后采用新的氧枪枪位控制、灵活加入轻烧白云石和石灰两种辅料、采用无烟煤作为热源提高转炉前期温度等方式后,钢厂最高吃废钢250kg/t,平均出钢量为83.5t,炉龄控制在14 000~17 000炉。Main raw materials for converter steelmaking are scrap steel and molten iron.Due to the continuous consumption of domestic and foreign iron ore resources and high-quality coking coal resources,as well as the increasingly stringent requirements for energy conservation and emission reduction,the production cost of molten iron in blast furnaces has increased,while the price of scrap has gradually decreased.Increase the scrap ratio and reduce the consumption of molten iron to reduce the cost of converter steelmaking.After the scrap steel is increased,the new oxygen lance position control,the flexible addition of light-burned dolomite and lime two auxiliary materials,and the use of anthracite as the heat source to increase the temperature of the converter in the early stage,the steel mill eats up to 250 kg/t of scrap,and the average tapping volume is 83.5 t,and the furnace age is controlled between 14 000 and 17 000 furnaces.

关 键 词：废钢比 转炉炼钢 炼钢操作 护炉工艺 生产实践 

分 类 号：TF713[冶金工程—钢铁冶金]