Method for cooling tuyeres

Details Method for cooling tuyeres Method for cooling tuyeres

1981-02-24

1982-05-18

Rosenberg, P. D.

Metallurgical apparatus

Process

Tuyere operation

75 60, 266 46, 266268, C21B 716

Patent

active

043301088

ABSTRACT:
In a method for cooling tuyeres when molten iron is refined by blowing a refining gas containing oxygen, and by setting tuyeres below or above the meniscus of iron bath in a vessel for refining the molten iron, wherein concentric tuyeres are used and a refining gas containing oxygen gas is blown through the inner pipe of the concentric tuyere and a fluid for protecting the tuyeres is blown through the outer pipe of the tuyere so that the protecting fluid surrounds the refining gas in a sheath form to cool the top ends of the tuyeres, the protecting fluid being a mixture of gaseous or liquid carbon dioxide and carbon fine particles.

REFERENCES:
patent: 3330645 (1967-07-01), De Moustier
patent: 4089677 (1978-05-01), Spenceley

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