| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water-cooled jacket capable of suppressing water leak, and a method for producing the same.SOLUTION: The water-cooled jacket is a water-cooled jacket that is, at the crown part of a reaction shaft of a flash furnace, provided on the outside of a nozzle comprising a passageway for copper concentrate, to function as an outer casing constituting a passageway for reaction gas between the nozzle and itself, and is characterized to comprise a plurality of water channels each independently connected to a cooling-water supply source.</p> |
