Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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Publication date
Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Priority to JP13452276ApriorityCriticalpatent/JPS5358904A/en
Publication of JPS5358904ApublicationCriticalpatent/JPS5358904A/en
PURPOSE: To prevent the crack occurrence due to the red heat of iron shell in case of erosion of refractory material in furnace by putting the supporting metal tool in the inner surface of the iron shell lined with blast furnace refractory material and by putting the protecting layer of refractory material to the metal tool.