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%.
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)
出处
《矿冶工程》
CAS
CSCD
北大核心
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)
关键词
宁乡式铁矿
氧化铁矿
焙烧
反浮选
磁选
Ningxiang-type iron deposit
iron oxide ore
roasting
reverse flotation
magnetic separation
