| 摘要 |
PURPOSE:To reduce the wear of refractories in the vicinity of the opening of a tuyere of a converter and to prolong the life of the converter by feeding protective gas from the narrow gap between the outer and inner tubes of the tuyere and refining gas from the spiral hollows in the inner tube. CONSTITUTION:A blowing tuyere of a converter is composed of a thin outer tube 1 and an inner tube 2 having prescribed hollows 4, and a narrow gap 3 is left between the tubes 1, 2. In the upper part of the inner tube 2, the hollows 4 are in a multiply spiral state. Protective gas is fed from the narrow gap 3, and refining gas from the hollows 4. |
