METHOD FOR SMELTING NICKEL OXIDE ORE
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United States of America Patent
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Jul 10, 2015
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Aug 1, 2014
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Abstract
A method for smelting nickel oxide ore according to the present invention uses pellets of nickel oxide ore and is characterized by comprising: a pellet production step S1 for producing pellets from nickel oxide ore; a reduction step S2 for heating the resulting pellets at a predetermined reduction temperature in a reduction furnace to obtain a mixture of iron-nickel alloy and slag; and a separation step S3 for separating out and recovering the iron-nickel alloy form the resulting mixture, the separation step S3 comprising the creation of pulverized matter by pulverizing the mixture so that at least the slag becomes smaller than 2 mm, and sorting the resulting pulverized matter with a magnetic force of 300 to 600 gauss.
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