Isolation technology and process for extracting Ni and Co from nickel-containing high-cobalt hydroxide

• Main Authors: WANG RUILIN, YANG YONGNING, ZHAO MINGYU, WU YUMING, ZHOU TONG, DING CAISHENG, ZHANG JUN, GENG WENJIE, WEI XIULAN, LI QUAN, ZHAO LIPING, YOU GUANGHONG
• Format: Patent
• Language: English
• Published: 27.01.2016
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The sulfuric acid total leaching process is adopted in an isolation technology and process for extracting nickel and cobalt from nickel-containing high-cobalt hydroxide, so that a high Ni and Co leaching rate is guaranteed. By means of the processes of sulfuric acid leaching, impurity removal, extraction, and Ni-Co isolation, leaching agents rich in metallic nickel and metallic cobalt are obtained, the leaching agents are directly fed into an electro-deposited nickel and electro-deposited cobalt production system, and accordingly metallic nickel and metallic cobalt are isolated and extracted. The obtained leaching agents rich in metallic nickel and metallic cobalt can directly enter the electro-deposited nickel and electro-deposited cobalt production system. In addition, the process for extracting nickel and cobalt from nickel-containing high-cobalt hydroxide is simple, efficient, environment-friendly and suitable for treating nickel-containing high-cobalt hydroxide.