Nickel iron ore mainlyMetallic mineralsLimonite, followed by hematite;Ni is evenly distributed in iron minerals without manganese, while it is relatively concentrated in iron minerals with Mn and associated with Mn.Nickel iron ore is uncommon and occurs in massive and granular aggregates.Iron gray, dark gray or black, streaked iron gray.Opaque, freshMetallic luster。[1]
Output and causes
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Nickel iron ore is mostly formed in some altered basaltbasaltModerately rich in ironmineralGenerating chemistryReductionThe nickel iron ore will appear.Some species are also altered due to serpentinizationHyperbasicityIn rocks.OftenFerruginous stone--NickeloliteBlock appears inMeteoriteMedium.Modern scientists believe that most of the earth's core is composed ofironAnd nickel, but it is still a rare material on land.[1]
Treatment process
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As for the treatment process of nickel iron ore, the reduction roasting ammonia leaching process was first applied in industry, which was successively applied in the Nicaro Smelter in Cuba, Townsville Nickel Smelter in Queensland, Australia, Marinduque Smelter in the Philippines, and Yuanshishan Nickel Smelter in Qinghai, China.The key process of this process is selective reduction roasting, and the selectivity directly determines the total recovery rate of Ni and Co.The so-called selective reduction roasting refers to the complete reduction of Ni and Co to metallic state and the reduction of Fe to FethreeOfourState.Although the reduction roasting of laterite nickel ore has been applied in industry at home and abroad, the research on phase transformation of selective reduction roasting of laterite nickel ore is still less.[2]
