Method to improve the service life of gas injection devices used

Details Method to improve the service life of gas injection devices used Method to improve the service life of gas injection devices used

1992-08-10

1993-04-06

Kastler, Scott

Metallurgical apparatus

Process

Tuyere operation

266220, C21B 716

Patent

active

052001350

ABSTRACT:
A method to improve the service life of gas injection devices is disclosed.
A porous mushroom with controlled permeability is formed, previously to the element installation, in the tip of said element by a thermal spray process.
By controlling gas flow rate and pressure during the mushroom formation, the gas permeability in said mushroom is controlled.
The sprayed materials are high melting point ceramics, metal compounds or synthetic slags.

REFERENCES:
patent: 3330645 (1967-07-01), Moustier et al.
patent: 4695043 (1987-09-01), Winkelmann et al.

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