FERRONICKEL SULFIDATION METHOD

A ferronickel sulfidation method. Josephinite is smelted in an ore-smelting electric furnace, and generated molten ferronickel automatically flows to a hot metal ladle; after the hot metal ladle enters a sulfidation process, a rotating stirring apparatus is slowly inserted into molten iron; after th...

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Hauptverfasser: JIANG, Xinfang, CAI, Jiansong, CAI, Jianyong, LIAO, Zhengquan, ZHANG, Zhengyong, NI, Shumin, WEI, Xiangfang, LIU, Xuanliang, WANG, Duodong
Format: Patent
Sprache:chi ; eng ; fre
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Zusammenfassung:A ferronickel sulfidation method. Josephinite is smelted in an ore-smelting electric furnace, and generated molten ferronickel automatically flows to a hot metal ladle; after the hot metal ladle enters a sulfidation process, a rotating stirring apparatus is slowly inserted into molten iron; after the stirring apparatus is inserted to a certain depth, a sulfiding agent is added into the molten ferronickel by means of the stirring apparatus; and under the action of powerful stirring, sulfur is fully mixed with the molten ferronickel and reacts with nickel, cobalt, and iron in the molten ferronickel to generate nickel-sulfur and nickel-cobalt-iron alloys. The method enhances the mixing reaction of molten ferronickel and sulfur, achieves a nickel-cobalt curing rate of 95% or above and a sulfur utilization rate of greater than 90%, reduces the content of sulfur dioxide in flue gas, is environmentally friendly, is adapted to both liquid and solid sulfiding agents, and is also capable of flexibly adjusting an existi