Cooling element for shaft furnaces

Abstract

A cooling element for shaft furnaces includes an area through which coolant flows as a result of the arrangement of at least one internal coolant-carrying channel, which leads to coolant feed and discharge pipes connected to the cooling element. At the end of the element where coolant enters and/or exits, the coolant-carrying channel extends beyond the opening of the pipe and into an edge area of the cooling element. The coolant carrying channel has a cross-section which is larger than the cross-section of the internal channel, wherein the coolant section is provided with a guide element which divides the channel lengthwise in the flow direction so that the coolant is guided to the edge area of the cooling element and then back again in the opposite direction.

1 . Cooling element for shaft furnaces 
 with an area ( 8 ) through which coolant flows as a result of the arrangement of at least one internal coolant-carrying channel ( 9 ), which leads to coolant feed and discharge pipes ( 3 ,  4 ) connected to the cooling element ( 1 ,  2 ) and    with edge areas, wherein    at the end of the element where the coolant enters and/or exits, the coolant-carrying channel in question extends beyond the opening of the pipe and into the edge area of the cooling element and has a cross section which is larger than that of the cross section of the internal channel ( 9 ), this cooling section ( 13 ) being provided with a guide element ( 14 ), which divides the channel lengthwise in the flow direction so that the coolant is guided to the edge area of the cooling element and then back again in the opposite direction.    
   
   
       2 . Cooling element according to  claim 1 , wherein the edge area, including the associated cooling section ( 13 ) with the guide element ( 14 ), is designed as at least one separate endpiece, which is attached to the base body ( 8 ) with the internal cooling channels ( 9 ).  
   
   
       3 . Cooling element according to  claim 2 , wherein the separate endpiece ( 12 ) is designed as a casting or as a welded construction and is welded to the base body.  
   
   
       4 . Cooling element according to  claim 1 , wherein the cross-sectional dimension of the channel section ( 13 ) is approximately twice that of the cooling channel ( 9 ) in the base body ( 8 ), and in that the guide element is arranged so that it divides the channel section ( 13 ) into two cooling channels with corresponding dimensions.  
   
   
       5 . Cooling element according to  claim 1 , wherein the separate endpiece ( 12 ) is provided on the side facing the steel jacket of the furnace with at least one bore, into which the open end of the associated coolant feed or discharge pipe ( 3 ,  4 ) is introduced and welded.  
   
   
       6 . Cooling element according to  claim 1 , wherein it comprises 
 a base body ( 8 ) consisting of at least two extruded or rolled sections which are welded together, through which element at least one cooling channel ( 9 ) passes, and    endpieces ( 12 ), the number of which corresponds to the number of sections, the endpieces being welded to the top or bottom of the sections.