高炉含锌粉尘中铁资源的富集回收  

Enrichment and Recovery of Iron from Zinc-bearing Blast Furnace Dust

作　　者：邢相栋[1,2] 张建良[1] 曹明明[1] 焦克新[1] 任山[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]河南济源职业技术学院冶金化工系,河南济源454650

出　　处：《矿冶工程》2012年第3期86-88,91,共4页Mining and Metallurgical Engineering

基　　金："十一五"国家科技支撑计划资助项目(2008BAB32B05)

摘　　要：以转底炉工艺技术为基础,采用高温焙烧-磁选分离工艺对济钢高炉含锌粉尘脱锌富集铁进行了实验室研究,考察了还原温度、还原时间及配煤量对含锌粉尘脱锌率、金属化率、磁选精矿产率以及铁回收率的影响。实验结果表明最佳工艺参数为:还原温度1 350℃,还原时间30 min,配煤量4%。在此条件下的脱锌率和金属化率分别为99.75%和99.46%,精矿产率为45.63%,铁回收率为95.76%。Laboratory studies on dezincification and iron enrichment of zinc-bearing dust in Jigang by high temperature roasting-magnetic separation process were conducted based on the rotary hearth furnace technology. The effects of reduction temperature, reduction time and coal blending rate on dezincing rate of the zicn-bearing dust, metallization rate, yield of magnetic concentrate and iron recovery were investigated. The results showed that the optimum process parameters were that the reduction temperature was 1350°C, reduction time was 30 min and coal blending rate was 4%. Under these conditions, the dezincing rate and metallization rate were 99.75% and 99.46%, respectively, yield of the concentrates was 45.63% and iron recovery was 95.76%.

关 键 词：含锌粉尘 磁选 脱锌率 金属化率 铁 锌 

分 类 号：TD982[矿业工程—选矿]