Abstract: The change in the properties of run-of-mine ore had caused a great difference between the real technical indexes and process parameters of the processes and those designed, and further a change in the distribution of workloads and process parameters of various processes in a concentrator since its commissioning.A comprehensive investigation was made of the whole process to find the problems, and corresponding optimization measures were taken to realize an effective control of the production process, and to reduce the tailing grade at the same time of stabilizing the concentrate quality so as to improve the metal recovery.

Key words: Crushing and screening, Separation process, Gravity separation, Spiral sluice, Hydrocyclone