在SDBS分散体系中用平炉尘制备超细Fe_3O_4  

Preparation of Fine Fe_3O_4 by Using Openheath Dust in the Disperse System of SDBS

作　　者：徐爱菊[1] 刘莲云[2] 刘世昌[1] 

机构地区：[1]内蒙古师范大学化学与环境科学学院,内蒙古呼和浩特010022 [2]北京交通大学理学院,北京100044

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2005年第1期66-68,72,共4页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：内蒙古自然科学基金资助项目(20020802120);内蒙古师范大学青年重点科学基金资助项目(QNZ00101)

摘　　要：平炉炼钢产生大量平炉尘,内蒙古包头钢铁公司的平炉尘主要成分是立方晶系的γ-Fe2O3.利用同晶型间的拓扑转化原理,将平炉尘转化为超细尖晶石型铁氧体磁性粉末.加入表面活性剂可以降低超微粒子的表面能,减少其团聚倾向.实验证明,在平炉尘中加入15%的SDBS(十二烷基苯磺酸钠)后再反应,可以得到粒径更细且均匀的超细Fe3O4 粉末.The Open-heath dust of Baotou Iron and Steel Company is fine in particle size,with high iron content and mainly existing in γ-Fe_2O_3 type.After purification it can become raw material for magnetic material.Based on the principal of topotactic reaction in the same crystal class,the dust is transferred to spinal ferrite.With the addition of surface active agent the surface energy and the agglomeration of the super-fine particle size can be reduced.The results of the experiments demonstrate that the super-fine particle of Fe_3O_4 with high dispersion can be obtained by adding 15% SDBS(Sodium dodecyl benzene sulfonate) in the open-heath dust before the reaction.

关 键 词：平炉尘 实验证明 分散体系 超细 Γ-FE2O3 立方晶系 拓扑 FE3O4 制备 粒径 

分 类 号：O482.54[一般工业技术—材料科学与工程] TQ138.11[理学—固体物理]