Cooling plate

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 2440169

The invention relates to a cooling plate (1, 101) for a shaft furnace provided with a refractory lining. Said shaft furnace comprises a first laminated cooling plate element (2, 102) which is oriented towards the inside of the furnace (Oi), a second laminated rear cooling plate element (3, 103) which is welded to the first element, a cooling channel (7, 107) arranged between the first and second cooling plate elements, and tube sections (8, 9) to the cooling agent inlet or the cooling agent outlet. The aim of the invention is to improve the production, flow and cooling properties. To this end, the first cooling plate element (2, 102) is embodied in the form of a bloom having a plane front side (14) facing the inside of the furnace (O1), and the cross- sectional surface of the cooling channel is larger than in the central region (20; 120), in relation to the longitudinal extension of the cross-section in the end regions (18, 19; 118, 119). The invention also relates to a cooling plate system (33).

L'invention concerne une plaque de refroidissement (1, 101) pour fours à cuve munis d'une garniture intérieure réfractaire, comprenant un premier élément laminé de plaque de refroidissement (2, 102) dirigé vers l'intérieur du four (O¿I?) et un second élément de plaque de refroidissement laminé, disposé à l'arrière (3, 103), lesquels sont soudés entre eux, ainsi qu'un canal de refroidissement (7, 107) se trouvant entre le premier et le second élément de plaque, et des sections de tube (8, 9) pour l'entrée, ou la sortie, du fluide de refroidissement, et a pour but d'améliorer les propriétés de finition, d'écoulement et de refroidissement. A cet effet, l'invention est caractérisée en ce que le premier élément de plaque de refroidissement (2, 102) est réalisé sous forme d'un bloom comportant une face avant plane (14) dirigée vers l'intérieur du four (O¿I?), et en ce que la surface transversale du canal de refroidissement est, par rapport à l'extension longitudinale de la section transversale dans les zones d'extrémité (18, 19 ; 118, 119), plus grande que dans la zone médiane (20 ; 120). L'invention concerne en outre un système à plaques de refroidissement (33).

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