The effects of the amount of NaFeS2,which was used as an additive,on solid-state reduction and magnetic separation for enrichment of nickel and cobalt,and also the reduction behavior of nickel laterite ore were studied.The results show that with the increase of NaFeS2 addition,the softening and melting temperature of nickel laterite ore decreases correspondingly during the reduction process;while particles of the Ni-Co-Fe alloy obtained by reduction increase accordingly.The enrichment and recovery effects of nickel and cobalt will be better by adding 10％NaFeS2.The nickel laterite ore,after being pressed into briquettes,was subjected to reduction at 1 100℃ for 60 min,followed by a process of grinding and magnetic separation,resulting in a high quality nickel-cobalt-iron powder grading 7.89％Ni,0.66％Co and 74.01％Fe,at corresponding recoveries of 97.13％,86.78％and 35.81％.
关键词
红土镍矿/添加剂/还原焙烧/NaFeS2/镍钴铁粉/固态还原/磁选/镍/钴
Key words
nickel laterite ore/additive/reduction roasting/NaFeS2/Ni-Co-Fe powder/solid state reduction/magnetic separation/Ni/Co
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