Estudo do comportamento térmico das panelas da aciaria da siderúrgica Sinobras S.A

Abstract

The temperature control at a steelmaking is of main importance to the quality of steel produced, for productivity and production cost. The lack of precise control of temperatures suitable to ladles can cause problems in the process. The aim of this work consisted of modeling mathematically the ladles of the integrated Steelmaking Sinobras S.A.and through temperature measures on plant and computer simulations to know the thermal behavior during heating and operational steps like as full and empty ladles. From there we tried to optimize the process in order to reduce the loss of heat energy during steps, ladle is empty or full, thus ensuring a lower power consumption in the Ladle-furnace, to reestablish the amount of heat energy liquid steel. Another objective was to maintain higher temperatures at the ladles before tapping. Through mathematical modeling and computer simulations we obtained the temperature loss of the ladles and so were proposed operational and physical changes. Modifications were computationally simulated in order to provide a reduction of heat losses and thus provide greater accuracy in the liquid steel temperatures, thus ensuring a better quality steel produced.