A METHOD FOR TREATING LATERITE NICKEL ORE THROUGH SODIUM REDUCTION-ROASTING AND SEPARATION

• Main Authors: ZENG Guanwu, HAO Jianzhang
• Format: Patent
• Language: English
• Published: 05.02.2018
• 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 relates to the comprehensive utilization of laterite nickel ore, in particular to a method for treating laterite nickel ore through sodium reduction-roasting and separation, which comprises the steps of sodium reduction-roasting, chemical leaching, magnetic separation, melting separation, etc. It belongs to the field of metallurgical chemistry. The technical problem the Invention is to address is to comprehensively treat the laterite nickel ore by the method of sodium reduction-roasting and separation, especially to treat the high-iron, high-aluminum and low-nickel laterite nickel ore comprising TFe 55 pcnt -58 pcnt , Ah03 10 pcnt -12 pcnt , NiO 1 pcnt -1.5 pcnt , and unavoidable impurities. It can obtain the nickelferrite product containing 6 pcnt -1 0 pcnt of nickel, realize a yield of more than 80 pcnt of nickel, 54 pcnt or more of TF e grade in tailings, providing a new option for the treatment of high-aluminum laterite nickel ore.