A φ150 mm centrifugal contactor made of stainless steel was designed and manufactured for the industrial sidetrack test. The main structures of this centrifugal contactor are shown in Fig. 1. A mixture of two immiscible liquids with different densities was fed to the inlet and enabled to flow down into the annular zone between the rotor and housing. After entering the self-pumping rotor through the inlet at the bottom, the mixture was rapidly accelerated to rotor speed by the four vertical baffles dividing the separating zone into four chambers. Under high centrifugal force, the mixture was separated gradually while flowing upward, with the heavy phase in the outer layer and the light phase in the inner layer. The two separated phases were enabled to flow separately through the heavy and light phase weirs into their collector rings. Each liquid left its collector ring through a tangential exit.