Method for removing organics from germanium solutions immersed in tannic acid of zinc hydrometallurgy system

• Main Authors: FAN MAOSHENG, JIAO ZHILIANG, ZOU LIMING, LU ZHANQING, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 08.10.2019
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a method for removing organics from germanium solutions immersed in tannic acid of a zinc hydrometallurgy system, and belongs to the technical field of zinc hydrometallurgy. The method includes several important technological steps of primary organic decomposition, pulping, oxidation, secondary organic decomposition, purification and adsorption. According to the characteristics of the germanium solutions after tannin precipitation, the organics are decomposed by adding hydrogen peroxides, and meanwhile Fe2+ contained in the solutions is utilized to acatalyze and accelerate the decomposition of the organics. The germanium solutions after tannin precipitation after treatment of the technical scheme do not introduce new impurities, the removal rate of the organics reaches above 75%, and the electrolytic efficiency of purified zinc sulfates reaches 92. 3% and far higher than 90.97% of the potassium permanganate organic removal method frequently used at present. 本发明涉及一种脱除湿法炼锌系统单宁酸沉锗溶液中有机物的