Abstract: In order to improve the automation level of the concentrator，the magnetic separation process was investigated for the low level of the magnetic separation control system of the concentrator，and many factors affecting the grade of concentrate and tailings were studied. The results show that the magnetic separation process has many influencing factors，the process is complex，there are many uncontrollable factors，and there are some problems of lagging operation parameter information. Different types of magnetic separators have different adjustment methods，so it is necessary to design a specific adjustment scheme in automatic control. The lack of sensors and operating systems also affects the quality and efficiency of beneficiation. The automation of magnetic separation process should also be fully integrated into new research to promote the development and application of automation in concentrators and improve the economic benefits of concentrators.

Key words: automation, magnetic separation technology, iron ore