Sorting method

The invention discloses a sorting method which comprises the following steps: (1) grinding magnetized pellets into fine powder; and (2) carrying out magnetic separation on the fine powder under a set magnetic field intensity. According to the sorting method, the magnetized pellets can be prepared from the red mud as the raw material, and the sorting method has the advantage of being low in cost. According to the separation method, through selection and mutual cooperation of the fine powder granularity and the magnetic intensity, thorough separation of iron and aluminum can be achieved. 本发明公开了一种分选方法，包括：(1)将磁化球团磨制成细粉；(2)在设定的磁场强度下对细粉进行磁选分离。本发明的分选方法针对的磁化球团可以是采用赤泥为原料制备而成的，具有成本低廉的优势。本发明的分选方法通过对细粉粒度和磁强强度的选择与相互配合，能够实现铁和铝的彻底分离。