用磁铁矿精矿制取锶铁氧体工艺研究

Study on the Technology of Producing Strontium Ferrite from Magnetite Concentrate

介绍了依据磁铁矿精矿自身特点，采用新型添加剂Ｂ和Ｌ改善磁性能，生产出合格的铁氧体永磁材料。其磁性能指标：Ｂｒ ＝０ ．２１３ Ｔ， Ｈｃ ＝ １２９．８ ｋＡ／ｍ ，（Ｂ·Ｈ）ｍａｘ ＝ ７．２ ｋＪ／ｍ３ 。

The production of qualified permanent magnetic ferrite by adding new additive agents (B and L) to improve the magnetic properties in accordance with the characteristics of the raw material, a magnetite concentrate,is described.The product has the following indexes of magnetic properties:Br=0.213 T,H c=129.8 kA/m,(B·H) max =7.2 kJ/m 3。