Careful Control of Refractory Lining Conditions at NTMK-EVRAZ Ensures Intensive Operation and Long Campaign of Titania Blast Furnace
(Room 207A)
09 May 17
3:30 PM
-
4:00 PM
Tracks:
Blast Furnace Hearth
NTMK and Hatch developed a systematic approach to monitor conditions of blast furnace hearth lining using Acousto Ultrasonic-Echo (AU-E) non-destructive testing developed by Hatch. Continuous and periodic inspection of blast furnaces revealed problematic areas with accelerated refractory deterioration and minimal thickness, formation of elephant foot, extent and speed of refractory wear, cracks, and other anomalies. Improvement in coke quality, staves washing, control of ore load distribution, periodical slow run of the furnace, etc., were recommended and implemented to prolong furnace life and predict the end of campaign while maintaining the intensity of furnace operation