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前言近些年,对化合物的磁性进行研究,而对人工α-Fe_2O_3或天然α-Fe_2O_3主要就其单晶的物性进行研究。已经了解它们的磁化是属于用σ=σ_0+xH表示的寄生铁磁性。本研究的目的是,通过对几种不同产地的天然赤铁矿石的磁化、磁化率等磁特性以及磁化和温度关系的讨论,了解天然产赤铁矿石的寄生铁磁性的表现,进而提供高梯度磁分离回收这些赤铁矿石时所需要的基础资料。
Preface In recent years, the magnetic properties of compounds were studied, while the artificial α-Fe_2O_3 or natural α-Fe_2O_3 mainly on the physical properties of its single crystal. It is known that their magnetization belongs to the parasitic ferromagnetism represented by σ = σ_0 + xH. The purpose of this study is to understand the magnetism of the natural hematite ore by the discussion of the magnetization and magnetic susceptibility of several natural hematite ore and the relationship between magnetization and temperature in several different producing areas to provide High Gradient Magnetic Separation The basic data needed for the recovery of these hematite ore.