Treatment method of cobalt-containing feed liquid

• Main Authors: WANG WEI, WEI QIJIN, YANG WEIJIAO, MA XINMING, ZHANG ZHENGYANG, PENG YUHUA, YANG YONGQIANG, SUN LIUGEN
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2023
• 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 discloses a treatment method of cobalt-containing feed liquid, and belongs to the technical field of non-ferrous metal hydrometallurgy. A cascade recovery process is set according to the impurity content of cobalt-containing feed liquid, the air supply element provided by the invention is adopted to optimize the iron removal reaction condition, the generation of colloidal iron slag is avoided, elements such as copper and manganese are cooperatively treated in an iron removal reaction system, and the interference to the subsequent cobalt precipitation process and the loss of cobalt are reduced; cobalt-containing filter cakes obtained in the last stages are returned to a stepped recovery process for re-dissolving and then cyclically precipitating cobalt, so that the impurity content of a cobalt product is reduced, and the quality of the cobalt product is improved; a feed liquid magnesium removal process is added, so that the cost of wastewater treatment is reduced, the application of alkaline back