摘要
为解决鲕状赤铁矿利用的技术难题,采用“微波还原焙烧-弱磁选”提铁工艺处理鲕状赤铁矿。基于对矿物的XRD、SEM和EDX以及化学检测分析,研究了脱磷后鲕状赤铁矿“微波还原焙烧-弱磁选”的最佳工艺条件。结果发现,浮选后铁精矿在温度为650℃、煤粉配比为15%、焙烧时间为10min的条件下经微波还原焙烧后进行弱磁选,在磁场强度为80kA/m,磨矿细度为-0.038mm占41.5%的弱磁选条件下,经“1粗1扫”弱磁选工艺,最终获得了品位为62.8%、作业回收率82.5%和含磷量0.27%的磁铁精矿。
The iron-increase technology of microwave reduction roasting and low-intensity magnetic separation was used to solve the problem of oolitic hematite utilization.By means of XRD,SEM,EDX and chemical detection analysis of mineral,the optimum technologic condition of microwave reduction roasting and low-intensity magnetic separation for oolitic hematite after flotation was researched.The results showed that under the condition of 650℃,pulverized coal addition of 15%,and roasting time of10 min,the roasting ores after iron concentrate flotation were processed by low-intensity magnetic separation.Under the conditions of magnetic separation with the magnetic field intensity of 80 kA/m and grinding fineness of-0.038 mm accounted for 41.5%,and the low-intensity magnetic separation process with one rough and one scavenging was conducted,the magnetite concentrate was finally obtained with the iron grade of 62.8%,operating recovery of 82.5% and phosphorus content of 0.27%.
作者
张屹欧
李解
苏文柔
李保卫
刘荣祥
李佳伟
ZHANG Yiou;LI Jie;SU Wenrou;LI Baowei;LIU Rongxiang;LI Jiawei(Key Laboratory of Integrated ExploNation of Bayan Obo Multi-Metal Resources,Inner Mongolia University of Science and Technology,Baotou,Inner Mongolia 014010,China)
出处
《矿业研究与开发》
CAS
北大核心
2019年第8期120-124,共5页
Mining Research and Development
基金
内蒙古自然科学基金项目(2015MS0559)
内蒙古自治区科技创新引导项目(40510406061701)
关键词
鮞状赤铁矿
微波还原焙烧
弱磁选
Oolitic hematite
Microwave reduction roasting
Low-intensity magnetic separation
作者简介
张屹欧(1990-),男,陕西西安人,硕士,主要从事矿物分选研究,Email:zxcvbg_2005@qq.com;通信作者:李解(1972-),女,内蒙古包头市人,副教授,博士,主要从事微波冶金及资源综合利用研究.Emaihyjslijie@126.com
