Empty Line Shutdown Practice of Shandong Iron & Steel Group 2# 5 100 m3 Blast Furnace
In the 2# 5 100 m3 blast furnace of Rizhao Company of Shandong Iron and Steel Co,a large area of copper cooling wall in the 8th section of the blast furnace has been damaged in production for nearly 4 years,which affects the safety and stability of the blast furnace operation.It is decided to stop the empty material line and replace the 8th and 9th section cooling wall.Taking advantage of the opportunity of small wind break before furnace shutdown,the water pumping device and mechanical probe of furnace top are upgraded,meeting the operation requirements of furnace shutdown.Through accurate calculation of stop charge,reasonable matching of feed line with air volume and top pressure parameters,control of safe and appropriate top temperature range during empty feed line,reasonable adjustment of iron bit size and iron mouth depth,as well as a series of measures such as static pressure hole of furnace body and gas hood through nitrogen,fast,safe,environmentally friendly and smooth stop furnace can be achieved.
blast furnaceenvironmentalprotection empty material lineshutdown