摘要
现代高炉生产中,影响高炉长寿的因素越来越集中在高炉的冷却系统。通过强磁处理设备对高炉循环冷却水处理,研究了磁场强度,流速,时间对PSI指数,pH值,电导率的影响。采用正交试验的方法,并对防垢作用机制做出分析,得出在特定条件下,存在最佳磁场强度为26 500 Gs,最佳流速0.6 m/s,最佳时间4.5 h。用电子扫描电镜和X射线衍射仪分析磁化和未经过磁处理形成水垢,表明磁处理使水垢优先以纹石结构析出,纹石的粘附性很弱,呈松软絮状,悬浮在水中,很容易被水流冲走,这样就达到了防垢的目的。
During the production of modern blast furnace,factors which influence longevity of blast furnace concentrate in the cooling system of blast furnace.Adopting proper cooling system and cool water can normally guarantee blast furnace production.This paper studies that under magnetic field strength,current velocity,and time,strong magnetic processing equipment effects PSI index,pH value,the electric conductivity rate for cooling water.Adopting orthogonal experimental,the paper analysis function mechanism of preventing scale.It is found that under the particular condition,exist the best magnetic field strength 26 500 Gs,the best current velocity 0.6 m/s,and the best time 4.5 hours.Applying scanning electron microscopy and X-ray diffraction to scan scale of magnetic and non-magnetic.It indicates magnetic processing makes scale precipitate as aragonite which adhere to pipe weakly.Aragonite presents loose and soft form,suspend in the water,and can easily wash away with water current.This comes to the purpose of preventing scale.
出处
《中国冶金》
CAS
2010年第11期42-46,共5页
China Metallurgy
基金
国家科技支撑计划资助项目(2006BAE03A01)
关键词
高炉
长寿
超强永磁铁
循环冷却水
blast furnace
longevity
super-strong magnetic
circulating cooling water
