Integrated Tuyere For Converter

Abstract: The present invention provides an integrated tuyere for a converter, in which one double metal tube and a tuyere refractory are integrated, said integrated tuyere having a simple structure and suppressing deformation of the double metal tube upon installation in a converter and during handling and a reduction in the gas flow rate due to damage. The integrated tuyere for a converter according to the present invention is provided with: a double metal tube 3 which has an inner tube 31 and an outer tube 32, the inner tube 31 being loaded with a refractory 35; a tuyere refractory 2, in a through-hole in which 21 the double metal tube 3 is fixed with an adhesive 22 in between; and a metal case 4 which has a bottom plate 41 that covers the bottom face of the tuyere refractory 2 and a side plate 43 that covers a lower side face of the tuyere refractory 2. The metal case 4 has a thickness T of 6 to 20 mm and a length L of 3% to 50% of the total length of the tuyere refractory. The outer tube 32 of the double metal tube has an upper outer tube 321 and a lower outer tube 322. The lower outer tube 322 has a thickness of 3 mm or more and is welded/fixed to the bottom plate 41 of the metal case.

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