Method and apparatus for opening and closing a taphole in furnac

Details Method and apparatus for opening and closing a taphole in furnac Method and apparatus for opening and closing a taphole in furnac

1985-09-24

1987-01-20

Rutledge, L. Dewayne

Metallurgical apparatus

Process

Plugging or tapping

266272, C21B 712

Patent

active

046375902

ABSTRACT:
For the alternating opening and closing of a taphole in furnaces, especially those having high internal pressure, the taphole is sealed by a shutoff member. Thereafter a plugging gun is deployed at the opening of the taphole duct, and immediately after reopening of the shutoff member, the taphole duct is completely filled out by the plugging gun with plugging compound. After the taphole duct has been filled, but before the complete hardening of the plugging compound, a tapping rod can be driven conventionally by means of a drilling machine centrally through the plugging compound up into the furnace, and can be pulled out again for the subsequent tapping step.

REFERENCES:
patent: 4195825 (1980-04-01), Ulveling et al.
patent: 4384706 (1983-05-01), Shirasaka et al.

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