Since the use of hydrochloric acid in leach and chloride regeneration has acceleratedrapidly in recent years,the selective separation of nonferrous metal chlorides fromiron chloride by applying the process of metal chloride hydrolysis at high temperaturesand the recovery of HC1 and iron as Fe_2O_3 simultaneously have become an interestingand important problem to be investigated. Since the use of hydrochloric acid in leach and chloride regeneration has acceleratedrapidly in recent years, the selective separation of nonferrous metal chlorides fromiron chloride by applying the process of metal chloride hydrolysis at high temperatures and the recovery of HC1 and iron as Fe_2O_3 has become an interestingand important problem to be investigated.