Point of view. In this study, a shaking-table was used for concentrating a manganese ore sample from the Ghasem Abad area in Kerman, Iran. Experiments were designed by using L The influence of each variable and their interactions on the operation of the device were studied. The variables under investigation were: table slope, table frequency, water flowrate, feed rate, and particle size. The manganese concentrate grade, recovery, and separation efficiency were used as response variables. It was shown that water flowrate, table slope, feed rate, and particle size are the significant variable on concentrate grade; while, all the variables influence manganese recovery. Also, water flowrate, table slope, and table frequency have an important effect on manganese separation efficiency. Finally, three mathematical models were presented to predict the values of each response variables.Among all gravity concentration methods, the shaking-table is the most effective one from the metallurgical8 Taguchi design with five variables, each in two levels.