LF精炼过程中氧与夹杂物控制实践  

Control of oxygen and inclusion in LF refining process

作　　者：刘卫东[1] 张新文[1] 金凤奎[1] 黄建军[1] 周伟[1] 

机构地区：[1]南通宝钢钢铁有限公司,江苏南通226002

出　　处：《南方金属》2011年第5期33-38,共6页Southern Metals

摘　　要：介绍LF精炼过程中氧的来源及控制.氧的来源主要有:1)电炉工序;2)LF精炼过程中电弧高温破坏了Al-O平衡,使钢液中自由氧上升;3)精炼过程中大翻氩气,造成钢液吸气.合适的碱度、合理的软吹Ar制度及喂入钙线或Ca-Si-Ba-Al线能很好的使夹杂物上浮并去除.The control and source of oxygen in LF （low frequency） refining process are dealt with in the article. The oxygen was found to come from 1 ） the electric furnace process itself; 2） the increase of the free oxygen in the molten steel due to the destruction of the A1-O high-temperature equilibrium during the refining; and 3 ） the air absorption of molten steel caused by severe argon stirring. The inclusion could be well removed by selecting a proper alkalinity, employing a proper soft Ar blowing system, and feeding calcium line or Ca-Si-Ba-Al line.

关 键 词：LF精炼 钢液 脱氧 平衡 

分 类 号：TF741.5[冶金工程—钢铁冶金]