METHOD FOR DEHYDRATION OF SODIUM IODIDE

摘要

The invention relates to the methods for dehydration of loose dielectric materials, in particular for dehydration of powdery sodium iodide intended for monocrystal growing. According to a method the salt is placed in an ampoule, the ampoule is vacuumized at a room temperature to pressure of 25-30 millimeter of mercury, its treatment is carried out by the microwave field, a temperature is supported at the level of 25-35 DEGREE C and pressure - at a level of 25-30 millimeter of mercury. The hydrolysis reaction is inhibited by these experimentallydetermined technological parameters of sodium iodide treatment and in such a way the anhydrous oxygen-containing product practically free of admixtures is obtained. The decreasing of temperature condition of sodium iodide treatment promotes the decreasing of process energy intensity.