低硅钢冶炼过程硅质量分数控制  

Silicon Content Control in Smelting Process of Low Silicon Steel

作　　者：周贺贺 曹余良 王攀峰 孟令东 

机构地区：[1]南京钢铁股份有限公司中厚板卷厂,江苏南京210035

出　　处：《中国冶金》2013年第5期41-43,47,共4页China Metallurgy

摘　　要：抑制回硅是低硅品种钢冶炼的重点和难点,南钢中厚板卷厂通过转炉出钢弱脱氧操作,精炼炉弱脱氧升温,脱氧、脱硫造渣,连铸严格的保护浇注及吹氩塞棒、吹氩浸入式上水口的应用等一系列工艺优化和操作的改进,使整个冶炼过程钢水回硅量稳定控制在200×10-6以内,钢水终点成分完全满足低硅钢要求。Control of increasing silicon is the emphasis and difficulty in low silicon varieties steel smelting. The Nisco Wide Plate/Coil Plant can control the silicon content in molten steel keeping within 200 X 10 6 through whole steel- making process by using oxygen residual operation in converter tapping, oxygen residual and increasing tempera- ture, deoxidation, desulfurization, slag refining, protection cast, blowing argon by plugged nozzle, blowing argon by submerged entry nozzle in continuous casting, and other series methods of improving technological and operation. The final content of the molten steel could come up to the technical standards for low silicon steel completely.

关 键 词：低硅钢 回硅 弱脱氧 脱硫 

分 类 号：TF703.8[冶金工程—钢铁冶金]