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US 4,045,007 AGranted
Blast pipe for metallurgical converters
AssigneeEmile Sprunck
InventorsPierre Leroy, Emile Sprunck
Life of this patent
Estimating the term…
Abstract
A blast pipe is formed of a plurality of concentric tubes, the cross-sections of which are designed for the fluid flows required for the refining of a metal bath, which are used initially as a burner. A second tube adjacent an outermost tube, projects beyond the end of the outermost tube, and is provided with a row of orifices in the projecting portion. The end of the second tube is closed by a metal cap soldered to the second tube with a hard solder which melts at a predetermined temperature in relation to the metal of the bath to be refined.
Claims4
A blast pipe apparatus for a metallurgical converter comprising:
- a plurality of concentric tubes, including first and second tubes, the cross-sections of said tubes being adapted to fluid flows required for the refining of a metal bath, the first outermost tube of which is to be fed with a combustible fluid;
- the second tube, adjacent to said first tube, which defines on the inside, an annular combustible fluid passage and which is to be fed with gas to complete the combustion;
- said second tube extending beyond said first tube at the end of the blast pipe, being provided with a row of orifices arranged in a crown solely in the projecting portion of the said second tube and having its end closed by a metal cap soldered thereto by means of a hard solder which melts at a predetermined temperature.
Dependencies are inferred from the claim text.