Patent ID: 7402275
Filing Date: 2008-07-22
Classification: C21B,C21C,F23D,F23G,F23L,F27D,Y02E,Y02P

Abstract:
1. A powder body melting burner which injects a powder body, fuel, and oxygen into a furnace individually from a burner head and melts the powder body in flames in which the fuel is burned under oxygen support, the powder body melting burner comprising: a single powder body injection hole provided in the center of the injection head; a plurality of fuel injection holes disposed with a required central angle in the radial direction centering on the powder body injection hole; a single primary oxygen injection hole provided concentrically with each of the plurality of fuel injection holes; and a plurality of secondary oxygen injection hole provided in large numbers with a predetermined interval so as to surround each of the powder body injection hole and the plurality of fuel injection holes, the plurality of secondary oxygen in injection holes forming a ring shape as a whole around each of said powder body injection hole and said plurality of fuel injection hole; and wherein a cooling chamber is provided in the back side of the burner head and in a region from an outer circumference of the burner head to areas near the plurality of secondary oxygen injection holes, and a coolant from a cooling jacket arranged in the periphery of a burner body is supplied cyclically to the cooling chamber, thereby cooling a plane section of the burner head from the outer circumference thereof to said areas near said plurality of secondary oxygen injection holes.