Separating and recycling method of nickel, cobalt, copper manganese and zinc in electroplating sludge

• Main Author: GAN LI'NAN
• Format: Patent
• Language: Chinese; English
• Published: 24.09.2014
• 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 invention provides a separating and recycling method of nickel, cobalt, copper manganese and zinc in electroplating sludge. The method comprises the steps that acid leaching is performed on the electroplating sludge to obtain leaching agents for fractional extraction, organic phases and nickel-rich raffinate are obtained, four steps of reverse extraction are performed on the organic phases by sequentially adapting hydrochloric acid, vitriol, the vitriol and the hydrochloric acid, and four kinds of corresponding strip liquor are achieved; then follow-up recycle is performed on the nickel-rich raffinate and the four kinds of strip liquor, and separation and recycle of the nickel, the cobalt, the copper manganese and the zinc are completed. According to the method, the complete extraction mode is adopted, the nickel, the cobal, calcium, magnesium, the copper, manganese and the zinc are sequentially extracted step by step and then recycled respectively, a technology procedure is short, production efficiency i