中薄板坯连铸机低碳高铝钢水口堵塞原因分析  

Cause Analysis of Nozzle Clogging During Middle-thinness Continuous Casting of High Aluminum Low Carbon Steel

作　　者：曹运涛[1] 刘江[1] 

机构地区：[1]济南钢铁集团总公司,山东济南250101

出　　处：《山东冶金》2007年第S2期82-84,共3页Shandong Metallurgy

摘　　要：中薄板坯连铸机生产低碳高铝钢过程中,浸入式水口堵塞的主要原因是水口与钢水之间产生化学作用和钢水中的氧化铝夹杂物在水口壁上沉积。钢水中形成铝酸盐的过程包括转炉终点氧含量过高、炉渣对夹杂物的吸收率、LF造玻璃渣后加钙线处理、LF炉吹氩的控制、连铸浇铸过程中的保护浇注等。为解决水口堵塞问题,通过优化铁水预处理、转炉、精炼、连铸各方面的操作,减少钢水中的铝酸盐的数量,提高钢水的纯净度,获得了良好的钢水质量,保证了连铸生产的顺行。The main reason that the submerged nozzle clogged during continuous casting of high aluminum low carbon steel is aluminate that aggraded the submerged nozzle wall.This article makes an analysis of the basic causes of submerged nozzle clogging.The process of forming aluminate is that oxygen too high of ladle steel,absorptivity of slag relative aluminate,Ca-treat after fabricated putty slag in LF,controlling the argon blowing,the obturation during continuous casting.During production,we optimized some technologic operations during KR-BOF-LF-CCM,decreased the quantity of aluminate,and enhanced the steel purity,thus beneficial to improvement of continuous casting production and product quality.

关 键 词：中薄板坯连铸机 低碳高铝钢 水口堵塞 分析 

分 类 号：TF777[冶金工程—钢铁冶金]