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Since 2008, Usiminas has initiated a series of actions aiming to increase the life of the refractory lining for the steel\udladles and boost technological development in this area. The limitation of the lining was the performance of the bricks\udused in the slag line. In this sense, the results of tests that show the evolution of the main properties of MgO-C bricks\udused in this area are presented and discussed. The permanent characterization has permitted the selection of those with\udbest suited properties for the Usiminas process conditions, and assisted refractory suppliers in the development of these\udmaterials. These efforts provided an average increase in the lining campaign about 6%, since the beginning of the actions\udin 2008, without increase the cost

ANÁLISE DA EVOLUÇÃO DO DESEMPENHO DE REFRATÁRIOS MgO-C PARA LINHA DE ESCÓRIA DE PANELA DE AÇO NA USIMINAS IPATINGA