Treatment process of nickel/cobalt intermediate product

• Main Authors: QIN RUYONG, CUI JUN, YE WEIMING, ZHANG YING, ZHENG JIANGFENG, YANG SHIMIN, WEN DINGQIANG
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• 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 belongs to the technical field of hydrometallurgy, and particularly relates to a nickel/cobalt intermediate product treatment process which comprises the following steps: carrying out first-stage leaching treatment and second-stage leaching treatment on a nickel intermediate product or a cobalt intermediate product to obtain a first-stage leaching solution and a second-stage leaching solution, carrying out extraction and impurity removal treatment on the first-stage leaching solution to obtain a product solution, and a small amount of second-stage leaching liquid is subjected to copper removal treatment and then is returned to the first-stage leaching. Compared with the processes of directly carrying out copper removal treatment, iron and aluminum removal treatment and the like on the leaching liquid through one-section leaching in an old process, the treatment process provided by the invention only needs to carry out copper removal treatment on a small amount of two-section leaching liquid, and