“Sintering behavior of periclase-doloma refractory mixes”

A.G. TOMBA M.; M.A. CAMERUCCI; A.L. CAVALIERI; L.F. MARTORELLO; P.G. GALLIANO

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY

Elsevier Science Ltd.

Año: 2009 vol. 29 p. 581 - 586

0955-2219

Steelmaking electric arc furnaces (EAF) hearth is usually built up with dry vibratable refractory mixes. During furnace operation, the refractory mix undergoes sinterization, slag attack, and chemical interaction with steel. Material sintering is needed in the upper part of the EAF hearth, in order to develop enough mechanical strength and wear resistance during operation. Densification of the upper layer also reduces steel infiltration from the hot surface. In this work, the sintering behavior of three dry vibratable commercial refractory materials for EAF hearth is reported. The characterization of the mixes includes chemical, mineralogical, and granulometric analyses. The study of sintering behavior is carried out by dilatometric analysis and microstructural and mechanical evaluation of sintered specimens.