Powder injector for ladle
AssigneeRossborough Manufacturing Co.
InventorPaul D. Lawson
Life of this patent
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Abstract
A powder injector for a ladle of molten metal having an exposed upper level with a given shape. The injector comprises a splash deflector with a cast body of heat resistant material with a downwardly facing lower surface defining an outer periphery and maintained above the upper level of molten metal, an elongated powder injection lance with a tubular body extending vertically from above the deflector surface to a position substantially below the surface and into the molten metal and a directional outlet nozzle directed at a transverse angle to the lance body in a direction below the surface of the splash deflector and an upper member mounting the lance with respect to the splash deflector with the nozzle directed into the molten metal substantially below the lower surface and within the periphery of the lower surface.
Claims14
A powder injector for use with a ladle of molten metal having an exposed upper surface, said injector comprising a splash deflector with a cast body of heat resistant material having a downwardly facing lower surface with an outer periphery, an elongated powder injection lance having a tubular body extending vertically adjacent said outer periphery from above said deflector to a position substantially below said upper surface, said lance having an outlet nozzle directed at a transverse angle to said tubular body in a direction inwardly of said outer periphery and below said lower surface of said splash deflector, and means for mounting said lance and said splash deflector in relation to said ladle.
A splash deflector for use with a lance that injects powdered material into a ladle of molten metal having an exposed upper surface, said deflector having a body of cast heat resistant material formed around a metal framework and having a downwardly facing lower surface with an outer periphery, means for suspending said body over a ladle, said body being in the shape of an inverted cone with a circular skirt and a circular neck.
A method of injecting powder into a ladle of molten metal having spaced apart end walls, comprising the steps of:
- a) providing injection means for injecting a stream of powder into said molten metal,
- b) providing deflecting means for deflecting splashing of said molten metal, said deflecting means having an outer periphery,
- c) positioning said deflecting means between said end walls of said ladle and above said molten metal,
- d) positioning said injection means adjacent the periphery of said deflection means,
- e) lowering said injection means into said molten metal,
- f) directing a stream of powder from said injection means laterally inwardly of said deflecting means whereby all agitation and splashing occurs under said deflecting means.
Dependencies are inferred from the claim text.