Extension of CST No. 1 blast furnace - hearth wear control F. Fujihara, J. Tardin, J. Oliveira, J. Novaes, D. Ruy and J. Seabra Rev. Met. Paris, 101 4 (2004) 261-267 Published online: 07 May 2004 DOI: 10.1051/metal:2004196