Method for producing pellet and method for smelting nickel oxide ore
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United States of America Patent
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Jun 18, 2019
Grant Date -
Jun 1, 2017
app pub date -
Jun 30, 2015
filing date -
Jul 15, 2014
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Abstract
Provided is a method for producing a pellet capable of suppressing heat shock-induced crack occurrence, when nickel oxide ores are made into pellets and placed in a reducing furnace in a smelting process. In the method for producing a pellet from a nickel oxide ore, a nickel oxide ore, a binder and a carbonaceous reducing agent are mixed, the mixture is made into a lump, and then the resulting lump is subjected to a preheat treatment at a temperature of 350° C. to 600° C. In this preheat treatment, the lump more preferably undergoes the preheat treatment at a temperature of 400° C. to 550° C.
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