Interaction of Heat Resistance Concrete with Low Melting Electrolyte KF-AlF_3(CR=1,3)

摘要

The kinetics of the heat resistance concrete interaction with low melting electrolyte KF-AlF_3 (CR=1,3) was investigated at 700 and 750°C. The experiments were carried out by continuous weighting method. The interaction of concrete with melt components was found. The kinetics of this interaction depends on alumina contents in a melt, temperature and the way of concrete preparation. The corrosion rate was found to be 12±3 cm/year. This value was obtained by calculation based on 7 hours experiments. The electrolysis of aluminum from low melting electrolyte in the container made of heat resistance concrete has been carried out during 72 hours.