关于鮞状赤铁矿磁化焙烧—磁选工艺的初步研究  

Study of Magnetization Roasting and Magnetic Separation Process of Oolitic Hematite

作　　者：刘静宇[1] Liu Jingyu(Department of Environmental Engineering,Heilongjiang University of Technology,Jixi,Heilongjiang 158100,China)

机构地区：[1]黑龙江工业学院环境工程系,黑龙江鸡西158100

出　　处：《黑龙江工业学院学报（综合版）》2018年第8期48-50,共3页Journal of Heilongjiang University of Technology(Comprehensive Edition)

摘　　要：分别对粉状赤铁矿(-325目为90%)和球团状赤铁矿(-200目为90%)的两种原料磁选前的磁化焙烧过程进行研究。研究结果表明:当粉状赤铁矿的煤粉配比为15%时,在700℃条件下焙烧15min,磁化焙烧过程效果最佳,但是采取球团方式进行磁化焙烧与采取粉矿方式相比,效果更好。同时Ca F_2和Na_2SO_4这两种添加剂的加入对磁铁矿晶粒长大的促进作用不明显。In this paper,the magnetization roasting process of two raw materials of powdery ore（-325 mesh 90%） and pelletized ore（-200 mesh 90%） was studied before their magnetic separation. The results show that the effect of magnetization roasting for 15 min at 700 centigrade is the best when the pulverized coal powder ratio is 15%,but the magnetized roasting process is better than that of powdered ore. At the same time,the addition of two additives such as CaF2 and Na2SO4 has little effect on the growth of magnetite grains.

关 键 词：磁化焙烧 磁铁矿 磁选 赤铁矿 

分 类 号：TD95[矿业工程—选矿]