Service of refractories in steel vacuuming plant with simultaneous treatment in the slag column

Abstract

Vacuum treatment of steel outside the furnace is one of the most effective methods of improving the quality of steel, and is being increasingly developed [i, 2]. For successful operation of plants for steel vacuuming outside the furnace (PVOF), reliable service of the refractories is essential, because the linings of PVOF are subjected to thermal, chemical, and erosive actions by the melts of metal and slag at low pressure.At UkrNlIspetsstal', in collaboration with the Dneprospetsstal' factory, we have developed a new method of vacuum treatment of steel with simultaneous treatment in the liquid slag column (VSC). * The plant for realization of this method (PVSC) differs in design and service conditions from other PVSC.