Investigation on lining erosion and stave damage of large blast furnaces at WISCO

Investigation and analysis on stave erosion of BF No.1, No.6 and No.7 in WISCO were carried out during their intermediate relining. The survey found that damaged cooling staves were mainly located at the joints between the hearth and the bosh. In addition, spheroidal graphite cast iron staves in the middle and lower parts of the shaft were also seriously damaged. Cooling staves located in other areas were essentially undamaged. Due to good heat …