With improvement of steel quality and increase of service life of converter campaign, a great attention has been paid to extend the service life of tuyeres in order to satisfy the need of steel process. Because of the life of tuyeres is far less than that of MgO-C lining of converter in general, it is absolutely necessary to maintain and repair the tuyeres carefully. In this paper, several effective methods including structure improvement, repair way, replacement and bottom-blowing control for prolonging the service life of tuyeres were introduced.
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