Tuyere for bottom blown refining converters - comprises inner tube with longitudinal ribs centred in outer tube

摘要

The tuyers consists of 2 concentric tubes, where one tube slides in the other, and an annular gap is formed between the tubes. The centering of the inner tube in the outer tube is achieved via equispaced longitudinal ribs. The ribs are pref. formed on the outer dia. of the inner tube, and have a height of 0.1-0.3mm according to the size of the converter. The ribs. pref. have a rounded cross-section and are sepd. by 6.5mmf and the ribs are formed esp. by drawing the inner tube.