Study and Post Mortem Analysis of Sinter Plant Detrick and Roof Refractory to Improve Life of Ignition Hood Furnace at Tata Steel Kalinganagar (TSK)

摘要

Sintering is an agglomeration of iron ore fines (0 - 8 mm) along with flux fines at high temperatures (1200 °C -1300 °C) using coke fine as a solid fuel. During agglomeration at high temperature all constituent materials fuse together and become a porous heterogeneous solid mass (lump) called sinter. Sintering process developed to utilize iron ore fines in blast furnace charge directly. For smooth running of the process with less downtime, refractory needs to align with operation without failure. Iron ore fines deposition over refractory surface of roof and Detrick is one of the frequent phenomena observed that leads to partial or full dislodge of bricks. After starting operation of newly refractory lined sinter furnace within six months major refractory collapses. This may occur from both material and operational variability.