Method for wet leaching of nickel-ammonia solution from nickel-iron alloy and application

• Main Authors: RUAN DINGSHAN, CHEN RUOKUI, HE FANG, QIAO YANCHAO, LI CHANGDONG, DENG HAOZHEN
• Format: Patent
• Language: Chinese; English
• Published: 17.08.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the field of metallurgy, and discloses a method for wet leaching of a nickel-ammonia solution from a nickel-iron alloy and application. The method comprises the following steps: carrying out oxidizing roasting on a rough nickel-iron alloy, and then carrying out spray granulation to obtain nickel-iron oxide powder; adding the nickel-iron oxide powder into an alkaline solution, heating, carrying out ammonia leaching reaction, and filtering to obtain iron slag and leachate; and extracting the leachate, and removing oil from raffinate to obtain the nickel-ammonia solution. According to the method, the ferronickel is subjected to oxidizing roasting, spray granulation and normal-pressure ammonia leaching, so that the high-pressure leaching energy consumption is reduced, meanwhile, the obtained nickel-ammonia solution is directly used for ternary precursor synthesis, and an ammonium source needing to be introduced in the synthesis process is reduced. 本发明属于冶金领域，公开了一种镍铁合金湿法浸出镍氨溶液的方法和应用，该方法包括以下