Cooling plates for blast furnaces
AssigneeSOFRESID, Societe Francaise d'Etude d'Installations Siderurgiques
InventorPatrick Dhelft
Life of this patent
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Abstract
A cooling plate for circulating fluid for cooling the walls of shaft furnaces and particularly blast furnaces, the plate being placed between the refractory material to be cooled and the facing of the furnace to be protected. The cooling plate includes a frame formed by two bent tubular elements welded at their ends to separator plates, an independent stream of cooling fluid passing through each tubular element; and a flat hollow central element consisting of an inner double-walled panel welded to the inner periphery of the frame, this inner panel forming an enclosure through which passes an independent stream of the cooling fluid.
Claims8
A cooling plate for circulating fluid for cooling the walls of shaft furnaces and particularly blast furnaces, the plate being placed between the refractory material to be cooled and the facing of the furnace to be protected, said cooling plate comprising:
- a frame formed by two bent tubular elements welded at their ends to separator plates, an independent stream of cooling fluid passing through each tubular element;
- and
- a flat hollow central element comprising an inner double-walled panel welded to the inner periphery of the frame, said inner panel forming an enclosure through which passes an independent stream of the cooling fluid.
In a shaft furnace bosh of the type including an outer facing, an inner refractory wall, and at least one cooling plate for cooling the bosh during operation of the furnace, the improvement wherein said cooling plate comprises:
- a plurality of vertically extending tubes positioned between said facing and said wall, said tubes being spaced from each other in the circumferential direction of said bosh;
- each said tube having spaced circumferentially therearound a plurality of longitudinally extending fins;
- fins of adjacent of said tubes being welded together;
- each said tube having at a first end thereof a fluid inlet extending outwardly through said facing;
- each said tube having at a second end thereof a fluid outlet extending outwardly through said facing;
- and
- said inlets being positioned to be aligned in plural horizontal rows, and said outlets being positioned to be aligned in plural horizontal rows, thereby reducing the weakening of said facing in the zones thereof through which said inlets and outlets extend.
Dependencies are inferred from the claim text.