极弱磁场中微细粒赤铁矿的磁性研究  

STUDY ON MAGNETISM OF HEMATITE FINES IN EXTREMELY WEAK MAGNETIC FIELD

作　　者：方启学[1,2,1] 卢寿慈[1,2,1] 谢珉[1,2,1] 贺飞丽 

机构地区：[1]北京矿冶研究总院 [2]北京科技大学

出　　处：《矿冶》1997年第1期25-28,62,共5页Mining And Metallurgy

摘　　要：本文叙述了赤铁矿的结晶构造与磁结构，研究了极弱磁场中微细粒赤铁矿的磁性，并指出赤铁矿磁化后具有剩磁，在极弱磁场中的比磁化系数明显高于常规的中强至强磁场中的相应值，极弱磁场中赤铁矿的磁性基本与粒度无关；加入磁种后，混合体的磁性将随磁种量的加大而基本呈一定斜率的直线方式上升。In this paper, the crystalline and magnetic structures are described. The magnetism of fine hematite particles in extremely weak magnetic field is investigated. It is indicated that there is residual magnetism inside magnetized hematite, the specific magnetization coefficient of the hematite in extremely weak magnetic field is muchh igher than that in medium-intensity or high-intensity magnetic fields, and the magnetism is basically nothing to do with particle size, however, magnetism of mixture of hematite and magnetoseed is linearly grown up with the increase of magnetoseed addition.

关 键 词：赤铁矿 磁性 极弱磁场 细粒矿 选矿 

分 类 号：TD951.1[矿业工程—选矿] TD924.12