Method and apparatus for cooling reduced-iron agglomerate

Abstract

In a method and an apparatus for cooling a reduced-iron agglomerate in a reduced-iron agglomerate production equipment wherein an iron oxide agglomerate is reduced in a reducing furnace and discharged as a reduced-iron agglomerate, a conveyer to convey said reduced-iron agglomerate is installed at the outlet of said reduced-iron agglomerate production equipment, a plurality of spray nozzles are installed above, or above and below, said conveyer at intervals in the conveying direction of said reduced-iron agglomerate, and said reduced-iron agglomerate on said conveyer is cooled intermittently by ejecting cooling water, continuously or intermittently, through said spray nozzles.

1 - 3 . (canceled)  
   
   
       4 . An apparatus for cooling a reduced-iron agglomerate in a reduced-iron agglomerate production equipment wherein an iron oxide agglomerate is reduced in a reducing furnace and discharged as a reduced-iron agglomerate characterized by: 
 a conveyor to convey said reduced-iron agglomerate at the outlet of said reduced-iron agglomerate production equipment; and    a plurality of spray nozzles above or above and below said conveyor at the intervals of P, satisfying the following expression (2), in the conveying direction of said reduced-iron agglomerate in order to cool said reduced-iron agglomerate on said conveyor intermittently by ejecting cooling water continuously through said spray nozzles,      1.2× B≦P≦ 10× B    (2),    where, B is the spread width of cooling water in the conveying direction and P is the intervals of installed spray nozzles.    
   
   
       5 . An apparatus for cooling a reduced-iron agglomerate in a reduced-iron agglomerate production equipment wherein an iron oxide agglomerate is reduced in a reducing furnace and discharged as a reduced-iron agglomerate characterized by: 
 a conveyor to convey said reduced-iron agglomerate at the outlet of said reduced-iron agglomerate production equipment; and    a plurality of spray nozzles above, or above and below, said conveyor at intervals in the conveying direction of said reduced-iron agglomerate and setting the spread width of cooling water in the conveying direction B and the spread width thereof in the conveyor width direction W so as to satisfy the following expression (3) in order to cool said reduced-iron agglomerate on said conveyor intermittently by ejecting said cooling water continuously through said spray nozzles,        W≧ 2× B    (3),    where, W is the spread width of cooling water in the conveyor width direction and B is the same in the conveying direction.    
   
   
       6 . An apparatus for cooling a reduced-iron agglomerate in a reduced-iron agglomerate production equipment wherein an iron oxide agglomerage is reduced in a reducing furnace and discharged as a reduced-iron agglomerate characterized by: 
 a conveyor to convey said reduced-iron agglomerate at the outlet of said reduced-iron agglomerate production equipment; and    a plurality of spray nozzles above, or above and below, said conveyor at the intervals of P, satisfying the following expression (4), in the conveying direction of said reduced-iron agglomerate in order to cool said reduced-iron agglomerate on said conveyor intermittently by ejecting cooling water intermittently through said spray nozzles,      B≦P   (4),    where, B is the spread width of cooling water in the conveying direction and P is the intervals of installed spray nozzles.    
   
   
       7 . An apparatus for cooling a reduced-iron agglomerate according to  claim 6 , characterized in that said spread width of cooling water in the conveying direction B and said spread width thereof in the conveyor width direction W satisfy the following expression (3),  
         W≧ 2× B    (3),  
     where, W is the spread width of cooling water in the conveyor width direction and B is the same in the conveying direction.  
   
   
       8 . An apparatus for cooling a reduced-iron agglomerate according to any one of  claims 4  to  7 , characterized in that said spread width of cooling water in the conveyor width direction W and the width of said conveyor CW satisfy the following expression (5),  
       CW≦W   (5),  
     where, CW is the width of a conveyor and W is the spread width of cooling water in the conveyor width direction.  
   
   
       9 . An apparatus for cooling a reduced-iron agglomerate in a reduced-iron agglomerate production equipment wherein an iron oxide agglomerate is reduced in a reducing furnace and discharged as a reduced-iron agglomerate characterized by: 
 a conveyor to convey said reduced-iron agglomerate at the outlet of said reduced-iron agglomerate production equipment;    a plurality of spray nozzles to spray cooling water on said reduced-iron agglomerate above said conveyor; and    side portions arranged on said conveyor so as to accumulate said cooling water and form a water layer 1 mm to less than 10 mm, in depth, on said conveyor.