DEVICE FOR SUPPLY OF INERT GAS TO CASTING LADLE Russian patent published in 2003 - IPC

FIELD: metallurgy, particularly, steelmaking; applicable in ladle treatment of steel. SUBSTANCE: device has inert gas pipeline, blowing tuyere and quick-break joint consisting of funnel and rod entering the funnel. Said rod is connected by system of hoses and pipes with main line of inert gas, and funnel is connected by means of pipelines with blowing tuyere of casting ladle. Funnel is suspended from ladle lower shell for motion in horizontal and vertical planes. Rod is rigidly secured to teeming ladle car or stand. Rod end may be made in form of hemisphere, and funnel has internal conical shape. Funnel is suspended on bolt with washer whose outer diameter of hole exceeding diameter of hole made in ladle lower shell. Diameter of hole in lower shell exceeds diameter of bolt by a factor of 2. EFFECT: getting rid of manual operations in disconnection of argon pipeline from ladle to prevent injuries in metal and slag spitting out of ladle. 3 cl, 4 dwg