Evaluation of the Performance of Advanced Refractory Materials Intended for the Roof of an Electric Furnace for High-Level Waste Vitrification

Abstract

This paper presents the results of the studies of refractory materials produced by the company Keralit, the Borovichi Refractories Plant, and Scientific and Technical Center Bakor (STC Bakor) and intended for the roof of an EP-6 electric furnace for high-level waste vitrification. These studies determined the strength properties and acid resistance of these materials when exposed to nitric-acid in vapor and solution forms. The results of the studies show that the optimum materials for constructing the melter roof are MKRTU-50 and MKV-65 produced by the Borovichi Refractories Plant and STC Bakor, respectively.