Method for purifying nickel in acid leaching solution of laterite nickel ores or tailings by adopting inorganic type ion exchange resin

• Main Author: LI BIN
• Format: Patent
• Language: Chinese; English
• Published: 31.07.2018
• 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 method for purifying nickel in an acid leaching solution of laterite nickel ores or tailings by adopting inorganic type ion exchange resin. The method comprises the followingsteps of: acid leaching solution pretreatment, resin pretreatment, adsorption, primary cleaning, desorption, secondary cleaning, wherein adsorption-desorption is performed in a double-column serial connection mode or a single-column desorption mode. The method provided by the invention can effectively enrich nickel ions in the acid leaching solution of the laterite nickel ores or tailings, so thata nickel enriching and extracting rate is 99% or higher, and effect of extracting metal nickel is remarkable; and an optimized process design is adopted, so that cyclic utilization of whole flow water is ensured, and novel wastewater is not generated; and average concentration of nickel ions in the enriched liquor is higher than 27.0g/L, and average concentration of total iron is lower than 1.0g/L. 本发明提供种采用无机型离子交换树脂提纯红土镍矿