Recovery method for waste ferrous chloride aqueous solution

• Main Authors: YU ZHENGLIAN, ZHOU QUANQUAN, SHEN YUNHE, ZHAO XIAOJUN, FAN FUYUN, XIONG GUOYIN
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2019
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY

The invention provides a recovery method for waste ferrous chloride aqueous solution. The method comprises the following steps: a), mixing the waste ferrous chloride aqueous solution with activated carbon for adsorption treatment, and performing filtering to obtain an iron-containing aqueous solution after adsorption treatment; b), desolventizing the iron-containing aqueous solution after adsorption treatment obtained in step a), and mixing a desolventized product with dilute hydrochloric acid to obtain an acid-added mixed solution; c), introducing chlorine gas into the acid-added mixed solution obtained in step b), and then adding an activator to obtain a ferric chloride solution. Compared with the prior art, the recovery method adopts specific process steps, organic impurities and solidinsoluble substances in the waste ferrous chloride aqueous solution are removed firstly, then specific effective components of the mixed solution are controlled, and finally, the effective componentsare converted, and a reusa