FIELD: metallurgy.
SUBSTANCE: multipurpose tuyere includes housing made of steel tubes connected to copper head and forming inflammable gas, oxygen supply paths, cooling water supply and discharge paths and igniting burner equipped with electric power supply. Igniting burner is installed in inflammable gas supply path and made in the form of metal tube the upper end of which is connected to compressed air supply path and lower end of tube is connected to tubular adapter made from heat-resistant electrically conducting material. Inner cavity of tubular adapter in zone of its connection to metal tube is interconnected with inflammable gas supply path by means of throttle channel. Metal tube of igniting burner is isolated from housing of tuyere by means of electrical isolator and connected to one of the power supply terminals. The second terminal is connected to lower end of tubular adapter.
EFFECT: increasing tuyere service life and simplifying its design.
2 cl, 1 dwg, 1 ex
