Injection of solids into liquids by means of a shrouded supersonic gas jet
AssigneeThe BOC Group, Inc.
InventorsAndrew Miller Cameron, Christian Juan Feldermann
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Abstract
A method of introducing a solid particulate reagent into a bath of metallurgical liquid comprises a step of introducing a solid particulate reagent into a main supersonic gas jet. The main supersonic gas jet is directed at the surface of the bath and is surrounded with a jet of shrouding gas, preferably of a burning hydrocarbon fluid fuel, provided at a supersonic velocity. The main supersonic gas jet is formed at a velocity which is in the range of minus 10% to plus 10% of the velocity at which the jet of shrouding gas is formed, preferably in the range of Mach 2 to 3.
Claims7
A method of introducing a solid particulate reagent into a bath of metallurgical liquid, comprising:
- introducing a solid particulate reagent into a main supersonic gas jet, directing the main supersonic gas jet at a surface of the bath, and surrounding the main supersonic gas jet with a jet of shrouding gas, characterized in that the shrouding gas jet is ejected from a converging-diverging nozzle at supersonic velocity, the main supersonic gas jet is at a first velocity and the shrouding gas jet at a second velocity, the second velocity being equal to or greater than the first velocity, and the shrouding gas jet comprises a burning hydrocarbon fluid fuel.
Dependencies are inferred from the claim text.