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三相交流磁选机具有磁系不动而磁场旋转移动的特点，结构简单，适合于处理铁杂质含量少的细粒级物料（如耐火原料中的混入铁）．用圆筒型三相交流磁选机对耐火原料进行除铁试验的研究，探讨了影响除铁效果的因素及提高除铁率的方法．
The three-phase AC magnetic separator has the characteristics of non-moving magnetic field and rotating magnetic field. The structure is simple and suitable for processing fine-grained materials with less iron impurities (such as mixed iron in refractory raw materials). With the three-phase AC magnetic separator cylindrical refractory raw materials for iron removal test research to explore the factors that affect the iron removal and improve the rate of iron removal method.