镁质氧化镍矿矿相分析及处理工艺选择  

Mineral Phase Analysis and Treatment Technological Selection of Magnesium-rich Nickel Oxide Ore

作　　者：马保中[1,2] 杨玮娇[1,2] 李谦[1] 王成彦[3] 王华[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]北京矿冶研究总院,北京100160 [3]北京科技大学冶金与生态工程学院,北京100083

出　　处：《有色金属（冶炼部分）》2016年第8期1-5,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金云南省联合基金项目(U1302274);国家自然科学基金面上项目(51274044);国家自然科学基金青年基金项目(51304023)

摘　　要：借助XRD、TG-DSC、SEM、ICP-OES、光学显微镜和必要化学方法分析云南代表性镁质氧化镍矿。结果表明,矿中氧化镁含量高达31.49%,87%矿物为蛇纹石,铁氧化物仅10%,大于83%的镍以类质同象和吸附方式赋存于硅酸盐矿物中。因含镁量较高,硫酸直接浸出该矿酸耗高达吨矿1.15t。基于该氧化镍矿矿相组成,提出促进剂作用下煤基较低温金属化还原-磁选回收镍铁新技术,镍铁回收率分别从40.27%和42.30%提高到83.46%和74.50%。The representative magnesium-rich nickel oxide ore in Yunnan Province was analyzed and characterized by XRD,TG-DSC,SEM,ICP-OES,optimal microscope and necessary chemical analysis.The results show that magnesium oxide content is as high as 31.49％;87％ of minerals are serpentine and iron oxides occupy only 10％;over 83％ of nickel distributes in silicate minerals in the forms of isomorphous substitution and adsorption.Sulfuric acid consumption is as high as 1.15 t per ton ore due to high magnesium content of ore.Based on mineral phase compositions,an innovative technology for coalbased metalized reduction of nickel oxide ore in presence of activator at low temperature followed by magnetic separation to recover nickel and iron is proposed.Recovery of nickel and iron rises from 40.27 ％ and 42.30％ to 83.46％ and 74.50％,respectively.

关 键 词：镁质氧化镍矿 矿相分析 工艺选择 

分 类 号：TF815[冶金工程—有色金属冶金]