红土镍矿含碳球团还原富集镍铁  

Enrichment of Ferronickel from Carbon-Bearing Laterite Nickel Ore Pellets

作　　者：刘岩[1] 徐冬[1] 张友平[2] 翟玉春[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]宝山钢铁股份公司研究院,上海201900

出　　处：《东北大学学报（自然科学版）》2012年第6期862-865,903,共5页Journal of Northeastern University(Natural Science)

基　　金：国家重点基础研究发展计划项目(2007CB613603)

摘　　要：采用碳还原-磁选分离-熔炼工艺制备了镍铁合金.考察了在碳还原过程中添加剂的用量、还原温度、还原时间对镍铁的富集的影响.在添加剂和配碳量(质量分数)分别为5%和3%,还原温度1 320℃和还原时间为120min的条件下,磁性产物中镍、铁质量分数分别达到8.31%和71.5%,回收率达到95.44%和99.84%.熔炼后得到镍、铁质量分数分别为10.11%和83.75%的镍铁合金.对有、无添加剂所得还原产物的形态分析表明,自制添加剂对镍铁合金生长具有促进作用.Ferronickel alloy was prepared by magnetic separation and smelting after carbon reduction. The effects of the additive dosage, reduction temperature and time on the enrichment of ferronickel alloy were investigated. Under the conditions of additive dosage of 5 %, carbon addition of 3 %, reduction temperature of 1 320℃ and reduction time of 120 min, the contents of Ni and Fe in the magnetic product are 8.31% and 71.5%, and the yields of Ni and Fe are 95.44 % and 99.84 %, respectively. After smelting, ferronickel alloy with Ni and Fe content of 10.11% and 83.75% was obtained. The analysis of the enriching processes with and without additive show that the home-made additive accelerated and promoted the growth of ferronickel alloy.

关 键 词：红土镍矿 镍铁合金 磁选 碳还原 镍火法冶金 

分 类 号：TF801.04[冶金工程—有色金属冶金]