甘肃某混合氧化铁矿选矿试验研究  

Beneficiation Experiment for Mixed Oxidized Iron Ores from Gansu Province

作　　者：刘金长 唐晓玲 LIU Jin-chang;TANG Xiao-ling(Technology Center of Jiuquan Iron&Steel(Group)Corporation,Jiayuguan 735100,Gansu,China;Key Laboratory of Refractory Iron Ore Resource Utilization in Gansu Province,Jiayuguan 735100,Gansu,China)

机构地区：[1]酒钢技术中心,甘肃嘉峪关735100 [2]甘肃省难选铁矿石资源利用重点实验室,甘肃嘉峪关735100

出　　处：《矿冶工程》2020年第2期63-66,共4页Mining and Metallurgical Engineering

基　　金：甘肃省科技计划资助(19ZD2GB001)

摘　　要：对某矿山代表性矿样进行了矿石性质及选矿工艺试验研究,进行了单一磁选、焙烧-磁选、磁选-反浮选、焙烧-磁选-反浮选等方案对比。结果表明,焙烧-磁选-反浮选能获得合格铁精矿,在最终磨矿细度-0.037 mm粒级占75%时,对品位32.50%的原矿经过三段磁选、三段浮选,可获得精矿铁品位59.94%、铁回收率72.84%、尾矿品位16.13%的选别指标,精矿中主要杂质SiO2含量8.47%。The properties of the representative ore sample from an iron mine were investigated,and the mineral processing experiments were carried out by comparing schemes including single magnetic separation,roasting-magnetic separation,magnetic separation-reverse flotation and roasting-magnetic separation-reverse flotation.The results show that,a qualified iron concentrate can be obtained using the roasting-magnetic separation-reverse flotation scheme.With the final grinding fineness at-0.037 mm 75%,the raw ore with the grade at 32.50%is subjected to reduction roasting,three stages of magnetic separation and three stages of flotation,resulting in the obtained iron concentrate grading 59.94%Fe at 72.84%recovery and the tailings grading 16.13%Fe,with the main impurity SiO2 in the concentrate just around 8.47%.

关 键 词：宁乡式铁矿 氧化铁矿 焙烧 反浮选 磁选 

分 类 号：TD951[矿业工程—选矿]