Abstract:
A METHOD FOR COOLING THE TIP OF A TUYERE USED FOR INTRODUCING AN OXIDIZING GAS INTO A MOLTEN METAL BATH OF A BOTTOM-BLOWN REFINING CONVERTER. THE METHOD COMPRISES INJECTING A COOLING AGENT INTO THE CONVERTER PERIPHERALLY OF THE TUYERE, WHERE THE COOLING AGENT IS A LIQUID UP TO THE TIP OF THE TUYERE.
Abstract:
Means for cooling a tuyere of a refining converter having two separate feed systems, which comprises an axial circuit for the oxidizing gas and a peripheral circuit for the cooling agent, wherein a cooling liquid, such as water under pressure, carbon dioxide in the liquid state or a hydrocarbon-containing liquid is injected into the peripheral circuit in lieu of a cooling gas.
Abstract:
At least two pressurized fluids are fed to a converter through tuyeres having at least two concentrically spaced pipes. Each pipe is longer on the feed side than the pipe which surrounds it. Annular seals on the pipes form a fluid supply chamber. The outermost pipe is surrounded by a sleeve and has two annular seals on its outer surface to resist leaks from the nose of the tuyere and to prevent leaks of fluid supplied to the outer pipe.
Abstract:
A process of protecting a tuyere of a refining converter having a double or multiple feed of which one, which may be the central feed, is pure oxygen, the process comprising feeding preferably a peripheral conduit with a viscous, a pasty, or powdery and compressed material containing carbon to protect the nose of the tuyere against wear by hot corrosion.