铁水罐吹气辅助扒渣工艺开发与改进  

Development and modification of air-blow aided deslagging process in molten iron tanr

作　　者：刘小卿[1] 陶勇钢[1] 王清方[1] 杜秀峰[1] 潘艳华[1] 

机构地区：[1]武汉钢铁(集团)公司第一炼钢厂,湖北武汉430083

出　　处：《炼钢》2007年第4期14-17,共4页Steelmaking

摘　　要：武钢第一炼钢厂采用纯镁脱硫存在渣量少而稀,渣中硫含量高,扒渣困难,扒渣时间长达11min/次、每吨铁扒渣铁损高达5kg、炼钢回硫的质量分数为0.005 1%,提出了在铁水罐上安装透气砖采用吹气辅助扒渣工艺,选择合理的透气砖材质及安装位置,并在实践过程中不断改进,大大改善了扒渣效果:平均扒渣时间不大于7min,平均每吨铁扒渣铁损降至3.5kg以内,平均出钢回硫质量分数降至0.002%以内,透气砖平均寿命达到110次以上。In hot metal desulfurization by pure Mg, problems frequently occur such as insufficient quantity of slag, high sulfur content and less flow-ability in slag , long time span for deslagging （up to 11 minutes） and heavy iron loss （up to 5 kg/t Fe）, high resulfurization in steelmaking （up to w（S） 0. 005 1%） in NO. 1 Steel-making Plant of WISCO. In order to solve those problems some technological measures have been taken in the Plant The efficiency of hot metal deslagging has been greatly improved ever since by adoption of the air blow aided deslagging technology in which the air bubbling elements such as porous bricks are installed in the bottom of the ladle, properly selection of material for the air bubbling elements as well as appropriate selection of the installation position and continuously improvement of the technology in the actual production. As the results the average deslagging time is cut to less than 7 minutes, average iron loss in deslagging declined from 5 kg/t Fe to 3.5kg/t Fe, average sulphur pick-up is declined from w（S） 0. 005 1% to w（S） 0. 002 %,average life length is extended up to 110 .

关 键 词：铁水罐 透气砖 扒渣 纯镁脱硫 

分 类 号：TF704.3[冶金工程—钢铁冶金]