云南惠民铁矿微波磁化焙烧工艺  

Microwave magnetization roasting for iron ore of Huimin in Yunnan Province

作　　者：王晓辉[1,2,3] 彭金辉[1,2,3] 夏洪应[1,2,3] 朱红波[1,2,3] 张利波[1,2,3] 刘秉国[1,2,3] 

机构地区：[1]云南省复杂有色金属资源清洁利用国家重点实验室(培育基地),云南昆明650093 [2]非常规冶金省部共建教育部重点实验室,云南昆明650093 [3]云南省微波能应用及装备技术工程实验室,云南昆明650093

出　　处：《中南大学学报（自然科学版）》2012年第6期2043-2047,共5页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金重大资助项目(51090385)

摘　　要：基于云南惠民铁矿主要为细粒浸染结构、氧化矿的主要铁矿物为褐铁矿,以氧化矿为研究对象,采用微波磁化焙烧-弱磁选工艺分选铁矿石,考查微波焙烧温度、还原剂用量、磁选磁场强度对分选指标的影响。研究结果表明:在焙烧温度为800℃,还原剂用量为12%,还原时间为12 min,磁选磁场强度为119.37 kA/cm的条件下,获得铁精矿品位为59.31%,回收率为81.92%,证实微波磁化焙烧铁矿石的方法可行,为难选铁矿石的分选提供了一种新的思路。Based on the fact that the iron ore in Yunnan Huimin is mainly fine-grained impregnation structure whose major iron ore of oxide ore is limonite,the oxide ore was studied,and the iron ore was sorted with the craft of magnetization roasting-low intensity magnetic separation.The effects of the microwave roasting temperature,and the amount of reducing agent,magnetic field strength on the index of separation were investigated.The results show that the preparation concentrate grade is 59.31% and recovery is 81.92% under the condition of roasting temperature of 800 ℃,amount of reducing agent of 12%,reduction time of 12 min and magnetic field strength of 119.37 kA/cm.It confirms that the method of microwave magnetizing roast of iron ore is feasible,which provides a new way for the difficult separation of iron ore.

关 键 词：微波 磁化焙烧 磁选 云南惠民铁矿 

分 类 号：TD951[矿业工程—选矿]