METHOD AND DEVICE FOR REMOVING IRON IN IRON-CONTAINING SOLUTION IN HYDROMETALLURGY

• Main Authors: QIN, MINGXIAO, YIN, SHUYAN, FU, JIANGUO, LI, SHAOLONG, LU, YEDA, LI, BIN, ZHAO, PENGFEI
• Format: Patent
• Language: English; French
• Published: 13.05.2019
• 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 present invention discloses a method and device for removing iron in an iron-containing solution in hydrometallurgy. This method comprises the steps of: adding an iron-containing solution in hydrometallurgy into a reactor through a first homogenizing distributor, controlling concentration of the ferric iron in the reactor below 1g/L, controlling pH of the solution in the reactor to be 2.5~4, the temperature to be 65~100°C, and the reaction duration to be 1~3 hours, performing solid-liquid separation for the solution after reaction, and removing the iron in the iron-containing solution in hydrometallurgy in the form of goethite. In the technical solution of the present invention, adding the iron-containing solution in hydrometallurgy into the reactor through a homogenizing distributor can directly convert the ferric iron in the solution to goethite precipitation, without a need to conduct ferric iron-ferrous iron-ferric iron conversion by adding lots of reducing agents and oxidizers as it does in the prior art, and without a need to return the seed crystal, which saves operation costs.