Process for recovery of waste H{HD 2{B SO{HD 4 {B and HCl

摘要

This invention relates to a process for recovery of waste H2SO4 and HCl which are used for pickling metallic materials and articles and contain a large quantities of Fe ions. Furthermore, it offers a process for the recovery of H2SO4 and HCl from waste H2SO4 which contains large amounts of Fe ions after removal of Ti ions by a hydrolysis process in the production of TiO2 and also for the recovery of high-purity electrolytic iron or iron hydroxide.