Process for increasing the life of basic refractory linings in h

Details Process for increasing the life of basic refractory linings in h Process for increasing the life of basic refractory linings in h

1974-08-02

1976-04-13

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, 75 60, C21C 534

Patent

active

039501612

ABSTRACT:
An increase in the life of basic refractory linings in hearth type refining furnaces and a decrease in tap-to-tap time is achieved by the use of at least one refining tuyere which consists of two concentric pipes. The central pipe feeds oxygen into the melt below the bath surface, and a hydrocarbon stream surrounds the oxygen being fed into the bath, the hydrocarbon flowing in the space between the two pipes. Preferably the tuyere is embedded in the furnace backwall and is approximately horizontal and is directed toward the center of the hearth. By use of the double tuyere, oxygen can be used for refining without experiencing excessive refractory wear.

REFERENCES:
patent: 1727482 (1929-09-01), Moore
patent: 3771998 (1973-11-01), Knuppel
patent: 3859078 (1975-01-01), Haysom

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