Study of Vaporized Water as a Root Cause for Undermining BF Hearth’s Heat Transfer System
(Room 404)
06 May 19
10:00 AM
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10:30 AM
This paper analyzes the critical and restraining factors on the blast furnace’s hearth service life. It presents the viewpoints that the solidified protection layer, namely the skull, should be an important guarantee for a long hearth service life, while the hearth’s heat transfer system is greatly instrumental in forming the skull for the hearth. The gas gap, mainly attributed to water, can be the most serious restriction on the desired heat transfer system in the hearth. The paths by which water enters the hearth are approached in order to find out how water influences the hearth’s carbon block, gas gap, heat transfer system and skull. Suggestions on how to prevent water from entering a hearth and how to organize a regular water discharge are proposed.