云南某褐铁粗精矿强化还原焙烧—弱磁选试验研究  

Experimental Study on the Enhanced Reduction Roasting—Weak Magnetic Separation of a Limonite Concentrate in Yunnan

作　　者：聂琪 朱宁 张汉平 武俊杰 NIE Qi;ZHU Ning;ZHANG Hanping;WU Junjie(Faculty of Metallurgy and Mining,Kunming Metallurgy College,Kunming 650033,China;Yunnan Enfi Technology Group Co.,Ltd.,Kunming 650000,China;Shanxi Provincial Geology and Mineral Experiment Research Institute Co.,Ltd.,Xi an 710000,China)

机构地区：[1]昆明冶金高等专科学校冶金与矿业学院,云南昆明650033 [2]云南恩菲科技集团有限公司,云南昆明650000 [3]陕西省地质矿产实验研究所有限公司,陕西西安710000

出　　处：《昆明冶金高等专科学校学报》2022年第6期6-11,共6页Journal of Kunming Metallurgy College

摘　　要：针对云南某褐铁矿选厂强磁选后得到的铁粗精矿品位(Fe 52.35%)较低的问题,在工艺矿物学研究的基础上进行试验研究:在催化剂添加量14%,还原剂添加量12%,焙烧温度1 050℃,焙烧时间30 min的条件下,采用“强化还原焙烧—弱磁选”工艺获得了精矿产率67.95%、品位TFe 70.89%、回收率91.94%的良好技术指标。Aiming at the low grade of iron concentrate(Fe 52.35%)obtained after strong magnetic separation in a limonite concentrator in Yunnan,a detailed experimental study was carried out on the basis of process mineralogical research.Under the conditions of catalyst addition amount of 14%,reducing agent addition amount of 12%,roasting temperature of 1050℃,and roasting time of 30 minutes,the“enhanced reduction roasting-weak magnetic separation”process was used to obtain a concentrate rate of 67.95%and a grade of TFe of 70.89%,a good technical index with a recovery rate of 91.94%.

关 键 词：褐铁矿 焙烧 磁选 选冶联合工艺 催化剂 

分 类 号：TD924[矿业工程—选矿]