Furnace taphole drilling apparatus and method

Details Furnace taphole drilling apparatus and method Furnace taphole drilling apparatus and method

1981-11-03

1983-12-06

Hearn, Brian E.

Metallurgical apparatus

Means sealing or opening aperture in vessel

266 45, C21B 712

Patent

active

044188943

ABSTRACT:
A drill rod, left in place in the plug of a taphole of a shaft furnace, is withdrawn by apparatus including a conventional percussive type taphole drill which is movable along a support bar. The support bar is provided, at the end which most closely approaches the furnace, with a guide and support head which engages and supports the drill rod as it is being withdrawn subsequent to loosening from the plugging material in the taphole.

REFERENCES:
patent: 1495906 (1924-05-01), Kendall
patent: 1817680 (1931-08-01), Pratt
patent: 2528358 (1950-10-01), Grass
patent: 2657894 (1953-11-01), Sklenar
patent: 2908471 (1959-10-01), Hollansworth
patent: 3199380 (1965-08-01), Threlkeld
patent: 3245437 (1966-04-01), Holz
patent: 4097033 (1978-06-01), Mailliet
patent: 4201373 (1980-05-01), Ulveling et al.
patent: 4311071 (1982-01-01), Bassell

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