NaFeS_(2)强化褐铁矿型红土镍矿固态还原富集镍钴的研究  

Enrichment of Nickel and Cobalt by Solid-State Reduction of Limonite-Type Nickel Laterite Ore Enhanced by NaFeS_(2)

作　　者：肖仁栋 陈靖 胡美世 许斌[1] 罗骏[1] 张鑫[1] 饶明军[1] XIAO Rendong;CHEN Jing;HU Meishi;XU Bin;LUO Jun;ZHANG Xin;RAO Mingjun(School of Minerals Processing&Bioengineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿冶工程》2024年第1期100-104,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(52174288,51804346)。

摘　　要：以NaFeS_(2)为添加剂,研究了NaFeS_(2)用量对红土镍矿固态还原-磁选富集镍、钴及红土镍矿还原行为的影响。结果表明,随着NaFeS_(2)添加量增加,还原过程红土镍矿的软熔特性温度相应降低,还原所得Ni-Co-Fe合金颗粒随之增大;添加10%NaFeS_(2)时,镍、钴的富集和回收效果好,红土镍矿经压团于1100℃还原60 min,再经磨矿-磁选可获得Ni、Co、Fe品位分别为7.89%、0.66%、74.01%,Ni、Co、Fe回收率分别为97.13%、86.78%、35.81%的优质镍钴铁粉产品。The effects of the amount of NaFeS_(2),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 NaFeS_(2)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%NaFeS_(2).The nickel laterite ore,after being pressed into briquettes,was subjected to reduction at 1100℃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 NaFeS_(2) 镍钴铁粉 固态还原 磁选 镍 钴 

分 类 号：TD982[矿业工程—选矿]