After the beneficiation the concentrate and tailings are in the form of pulp, it is necessary to thicken and dewater to achieve the required moisture content. The ore pulp is concentrated in the thickening equipment for 50%- 60% of pulp density, and then further dewatered by the filter machine or filter press to reach a certain moisture content. The different thickening and dewatering processes and equipments suit for different materials and should be selected according to the actual production situation.