京唐5500m3高炉超高比例碱性球团矿冶炼实践
Operation of Jingtang 5 500 m3 BF Smelting with Ultra-high Percentage of Basic Pellet
马成伟 1安钢 1郭宏烈 1刘胜涛 1谷端跃 1董相娟 1王金印1
作者信息
- 1. 首钢京唐钢铁联合有限责任公司,河北唐山 063200
- 折叠
摘要
随着京唐5500m3高炉入炉球团矿的比例＞50％,酸性球团矿难以满足冶炼造渣要求,为此开发了碱度＞1.1的球团矿,目前入炉碱性球团矿的比例保持在55％左右,单座高炉最高超过70％.针对超高比例碱性球团矿冶炼,采取了一系列措施,在精料方针方面,主要是改善碱性球团矿质量、稳定焦炭质量、控制碱金属负荷;在操作制度方面,主要是调整装料制度及送风制度、制订合理的热制度及造渣制度.3座高炉保持了长期稳定运行,主要技术经济指标维持在较好水平,其中1号高炉焦比最低降至257kg/t,燃料比最低496kg/t,焦炭负荷最高6.18,利用系数最高2.62t/(m3·d).
Abstract
For Jingtang 5 500 m3 BFs,the process of smelting with acid pellet percentage does not longer meeting the slagging requirement as the pellet percentage to furnace is＞50％,thus,the pellets with basicity higher than 1.1 are developed,and this kind of pellet percentage is maintained at about 55％,even higher than 70％max.for a single furnace.In the context of smelting under such ultra-high percentage of basic pellet,corresponding measures are taken,which mainly include:(1)im-proving the basic pellet quality,stabilizing the coke quality and controlling the basic metal load with respect to the beneficiat-ed burden materials;(2)adjusting the charging system and blasting system,setting up the appropriate heat system and slag-ging system in regard to the operating system.The three BFs achieve long-term stable running,and sound main techno-eco-nomic indicators with coke rate and fuel rate of No.1 BF dropped to min.257kg/t and 496kg/t respectively,coke load hit-ting 6.18 max.and productivity escalated to 2.62t/(m3·d)max.
关键词
特大型高炉/碱性球团矿/高球比/焦炭负荷/操作制度Key words
super-large sized blast furnace/basic pellet/high pellet percentage/coke load/operating system引用本文复制引用
出版年
2024
NETL
NSTL
万方数据