Blast pipe

Details Blast pipe Blast pipe

1985-03-08

1987-05-05

Callaghan, Thomas F.

Metallurgical apparatus

Means for introducing fluent into vessel, e.g., tuyere

Having means preventing damage to introducing means, e.g.,...

266225, 138141, 285417, 156294, C21B 716

Patent

active

046626140

ABSTRACT:
A blast pipe (2) primarily intended for introducing gas, such as oxygen gas, into molten metal in metallurgical processes, such as steel manufacturing processes, including a pipe element (1) made preferably of steel and coated at least externally with at least one protective layer (3). The blast pipe (2) is particularly characterized by the fact that the pipe element (1) is provided with an external, preferably high compact layer (3,4) which mainly comprises organic fibres, preferably wood fibres in the form of paper, and by the fact that the fibre layer (3,4) is preferably completely or partially impregnated with a refractory substance.

REFERENCES:
patent: 814491 (1906-03-01), Westerman
patent: 3036929 (1962-05-01), Kawashima et al.
patent: 3206183 (1965-09-01), Marwick, Jr.
patent: 3292662 (1966-12-01), Nishi
patent: 3430940 (1969-03-01), Criss
patent: 3503597 (1970-03-01), Kessler et al.
patent: 3830173 (1974-08-01), Hubble et al.
patent: 4093193 (1978-06-01), Cassidy et al.
patent: 4296921 (1981-10-01), Hayashi

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