| 摘要 |
PROBLEM TO BE SOLVED: To provide a refractory-coated lance with which the worn portion of the refractory can stably and economically be repaired without falling down the sound portion. SOLUTION: The refractory-coated lance obtained by coating the outside of a core-metal of the lance having a nozzle at the tip end part with the refractory is equipped with a flange-type partition plate for parting the above refractory with the peripheral direction of the core-metal of the lance in at least one portion in the longitudinal direction of the core-metal of the lance. Since the refractory is cut off with the partition plate in the longitudinal direction, when the worn refractory portion at the one range parted with the partition plate is disassembled, the shock is difficult to be propagated onto the other range of the sound refractory portion, and further, since a crack generated in the disassembled refractory portion, is not propagated onto the sound refractory portion, the fall-down of the refractory in the sound portion can suitably be prevented. COPYRIGHT: (C)2008,JPO&INPIT
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