EP 0182974 B1 19880608 - PROCESS AND APPARATUS FOR OPENING AND CLOSING A TAP HOLE OF FURNACES
Title (en)
PROCESS AND APPARATUS FOR OPENING AND CLOSING A TAP HOLE OF FURNACES
Publication
Application
Priority
DE 3443143 A 19841127
Abstract (en)
[origin: US4637590A] 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.
IPC 1-7
IPC 8 full level
C21B 7/12 (2006.01); F27B 3/19 (2006.01); F27D 3/14 (2006.01); F27D 3/15 (2006.01)
CPC (source: EP US)
C21B 7/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT FR IT LU SE
DOCDB simple family (publication)
EP 0182974 A1 19860604; EP 0182974 B1 19880608; AT E35001 T1 19880615; DE 3443143 A1 19860528; JP S61130778 A 19860618; US 4637590 A 19870120
DOCDB simple family (application)
EP 85110249 A 19850816; AT 85110249 T 19850816; DE 3443143 A 19841127; JP 26394085 A 19851126; US 77998885 A 19850924