Lance for injecting particulate material into liquid metal

Details Lance for injecting particulate material into liquid metal Lance for injecting particulate material into liquid metal

2008-07-08

2008-07-08

Kastler, Scott (Department: 1793)

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By means introducing treating material

C266S270000

Reexamination Certificate

active

10512186

ABSTRACT:
A metallurgical lance for injecting particulate material into a liquid comprises a main gas tube6defining an axial main gas passage terminating at its outlet and in a first Laval nozzle38downstream of the throat of said nozzle. A shrouding gas passage in the form of a combustion chamber36surrounds the main gas tube and terminates in a second Laval nozzle42. A particulate material transport tube4defines a passage for the particulate material to be introduced into the first Laval nozzle38downstream of its throat. The first Laval nozzle38is provided with a passage40for the flow of coolant.

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EPO Search Report; Dated Jun. 27 2003; Performed by Authorized Officer; G. Badcock.

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