Furnace bottom construction with seal
AssigneeInland Steel Company
InventorsFrederic E. Saviski, William E. Slagley, Peter K. Strangway
Life of this patent
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Abstract
A furnace bottom construction comprises refractory blocks resting atop a seal in turn resting on the top surface of a layer of ramming material in which are embedded cooling ducts resting on a concrete foundation. The seal is composed of thin, fluid-impervious, flexible, ductile sheet material deformed to follow the contours and indentations of the top surface of the ramming material. The bottom surface of the seal and the top surface of the ramming material are in intimate contact along substantially the entire area of said top surface, with substantially no air gaps between the two.
Claims12
In a furnace bottom:
- a bottom hearth layer of refractory material;
- a layer of ramming material located below said bottom hearth layer and having a top surface;
- cooling means in said layer of ramming material;
- seal means, impervious to liquid and gas and located on the top surface of said layer of ramming material, for preventing the escape downwardly below said seal means of gas from the interior of the furnace and to prevent the escape upwardly into said furnace interior of fluid from below said seal means;
- said seal means comprising a thin layer of material which follows the contours and indentations of said top surface of the ramming material to substantially eliminate air gaps between said top surface of the ramming material and the bottom surface of said fluid-impervious material;
- said bottom surface of said seal means being in intimate contact with said top surface of the ramming material along substantially the entire area of said top surface.
Dependencies are inferred from the claim text.