OXYGEN TUYERE OF MELTING METALLURGICAL FURNACE WITH SIDE IMMERSION OF COMBUSTION CHAMBER AND METALLURGICAL FURNACE WITH OXYGEN TUYERE Russian patent published in 2019 - IPC F27D3/18 C21B7/16 C21C5/48 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy and can be used for melting metallurgical furnace at blowing of pulverized coal in oxygen flow. Tuyere comprises outer pressure tube, internal limiting inlet for gas supporting combustion, outlet hole for gas supporting combustion, and plug-in branch pipe, self-locking element installed on plug-in connection pipe of external delivery pipe, internal discharge tube having inlet hole for medium, nozzle for medium injection and nozzle for cleaning of medium, inserted with possibility of disconnection into pluggable self-locking element, and a blocking element installed in the inner pressure tube for opening or closing the medium cleaning branch pipe, and a plug configured to stop output of second self-locking element from second housing, installed with possibility of disconnection in second housing, and which has nozzle for cleaning of block, which is connected with channel for cleaning of block.

EFFECT: invention makes it possible to clean in time the obstructions of the internal pressure tube, and also to eliminate the need to reduce the liquid level in the molten metal bath, when inner pressure tube is disconnected for maintenance, ensuring normal operation of metallurgical furnace and increasing product output.

9 cl, 4 dwg