Ladle refractory lining preheater
OwnerCarl A. Holleyinventor
Life of this patent
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Abstract
A preheater for uniformly heating the refractory lining of a ladle, ingot mold or the like. A concave, refractory lined cover is provided with one or more flues for exhausting noxious fumes and products of combustion. There is also provided an axially extending burner for projecting a flame onto the walls of the ladle refractory lining. Fluid operated means are provided for vertically tilting the boom which pivotally supports the ladle cover to enable the cover to be laid, with a tight fit, on the mouth portion of the ladle, - also to enable lifting of the cover and lateral swinging thereof from the closed position. A modification, particularly suitable for large ladles, is to provide a plurality of burners which emit flames substantially tangentially inwardly of the cover to uniformly heat the ladle lining.
Claims4
In combination with a ladle having an inner lining of refractory material, a preheater for uniformly heating said lining prior to introduction, into the ladle, of molten metal, comprising a ladle cover having a burner for projecting a flame into the cover in the direction of the ladle lining to preheat said lining, a vertical flue extending into the ladle cover for exhausting fumes developed therein, a boom including a horizontal pivot for pivotally suspending said cover and burner so that the cover will automatically remain in a horizontal plane irrespective of both lifting and lowering movements, and means for pivoting said boom in a vertical direction to effect selective lifting and lowering movements of said cover, means for effecting lateral movements of said boom about a vertical axis, throughout which movements said cover will always extend in a horizontal plane to enable tightly closing of said ladle by said cover.
Dependencies are inferred from the claim text.