Cooling element for shaft furnaces

C - Chemistry – Metallurgy – 21 – B

Patent

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Details

C21B 7/10 (2006.01) F27B 1/24 (2006.01) F27D 1/12 (2006.01) F27D 9/00 (2006.01)

Patent

CA 2423877

The invention relates to a cooling element for shaft furnaces, comprising an area (8) which is cross-flown by a cooling agent, resulting from an arrangement of at least one channel (9) which conveys a cooling agent internally and which leads into tubular elements (3,4) for feeding and discharging said coolant which are joined to the cooling element (1.2), in addition to comprising edge areas with improved cooling propreties. The respective channel conveying the cooling agent extends beyond the area where the tubular elements lead into the edge area at cooling agent feed and/or discharge level and has an expanded diameter in comparison with that of the internal channel (9) a guinding element (14) partialy dividing the channel section (13) in the direction of flow in order to guide the cooling agent into the edge area of the cooling element into return said agent counter to the direction of said flow.

L'invention concerne un élément de refroidissement pour fours à cuve, présentant une zone (8) parcourue par un agent réfrigérant. L'invention vise à mettre en oeuvre un tel élément par disposition d'au moins un canal interne (9) convoyant l'agent réfrigérant, ledit canal aboutissant dans des tubulures (3, 4) d'amenée et d'évacuation d'agent réfrigérant reliées à l'élément de refroidissement (1, 2), ledit élément comportant également des zones d'arête présentant de meilleures propriétés de refroidissement. A cet effet, le canal correspondant convoyant l'agent réfrigérant s'étend au-delà de la zone de sortie des tubulures au niveau de l'amenée et/ou de l'évacuation d'agent réfrigérant, de manière à pénétrer dans la zone d'arête de l'élément de refroidissement, et présente une section supérieure par rapport à la section du canal interne (9), un élément de guidage (14) divisant partiellement cette partie du canal (13) dans le sens d'écoulement servant à guider l'agent réfrigérant dans les zones d'arête de l'élément de refroidissement, et à ramener ledit agent contre le sens d'écoulement.

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