Аннотация
Abstract— The results of experiments on preparing pure (marketable) salt from crude salt of ammonium perrhenate are presented; the pure salt is rigidly standardized in elements–impurities and rhenium by recrystallization, sorption, and membrane electrodialysis. AP-0 salt is obtained from solutions purified from elements–impurities by recrystallization, AP-00 salt is obtained by sorption, and the salt purer than AP-00 is obtained by electrodialysis. The advantages and disadvantages of each of the methods are specified.