An annular centrifugal extractor with solid separation part to separate solid particles present in solvent extraction fluid, the ACE comprising: • a stationary cylinder/bowl having. • a heavy phase inlet for feeding heavy phase of material with/without solid particles into the ACE; • a light phase inlet for feeding light phase of material with/without solid particles into the ACE; • a light phase outlet port for allowing light phase material to come out for subsequent stages; • a heavy phase outlet port for allowing heavy phase material to exit for subsequent stages; • a light phase collection chamber to receive thrown out separated lighter phase flowing over a light phase weir; • a heavy phase collection chamber located above the light phase collection chamber in the stationary bowl to receive thrown out heavy phase material flowing over a heavy phase weir via an under flow region; • a rotating cylinder/bowl disposed inside the stationary cylinder/bowl; • a deflecting baffle disposed inside the rotating cylinder/bowl to deflect the dispersion with solid particles entering inside the rotating cylinder/bowl towards an inner wall of the rotating cylinder/bowl; • a plurality of vertical baffles in the rotating cylinder/bowl to confine separated solid particles inside chambers; characterized by • an upper rotating cylinder/bowl arranged to work as liquid/liquid separating rotor; • wherein the rotating cylinder/bowl is arranged to work as particle/solid separating rotor, is coupled with the upper rotating cylinder/bowl by threaded joint to act as the solid separating rotor to separate solid particle present in solvent extraction/process liquid; • a central opening for the upper rotating cylinder/bowl for allowing dispersion being free from solid particle to enter inside the upper rotating cylinder/bowl; • a deflecting baffle in the upper rotating cylinder/bowl to deflect the dispersion towards the wall of the rotating cylinder/bowl; and • a plurality of vertical baffles in the upper rotating cylinder/bowl to confine a separated dispersed phase inside chambers. • a stationary cylinder/bowl having. • a heavy phase inlet for feeding heavy phase of material with/without solid particles into the ACE; • a light phase inlet for feeding light phase of material with/without solid particles into the ACE; • a light phase outlet port for allowing light phase material to come out for subsequent stages; • a heavy phase outlet port for allowing heavy phase material to exit for subsequent stages; • a light phase collection chamber to receive thrown out separated lighter phase flowing over a light phase weir; • a heavy phase collection chamber located above the light phase collection chamber in the stationary bowl to receive thrown out heavy phase material flowing over a heavy phase weir via an under flow region; • a rotating cylinder/bowl disposed inside the stationary cylinder/bowl; • a deflecting baffle disposed inside the rotating cylinder/bowl to deflect the dispersion with solid particles entering inside the rotating cylinder/bowl towards an inner wall of the rotating cylinder/bowl; • a plurality of vertical baffles in the rotating cylinder/bowl to confine separated solid particles inside chambers; characterized by • an upper rotating cylinder/bowl arranged to work as liquid/liquid separating rotor; • wherein the rotating cylinder/bowl is arranged to work as particle/solid separating rotor, is coupled with the upper rotating cylinder/bowl by threaded joint to act as the solid separating rotor to separate solid particle present in solvent extraction/process liquid; • a central opening for the upper rotating cylinder/bowl for allowing dispersion being free from solid particle to enter inside the upper rotating cylinder/bowl; • a deflecting baffle in the upper rotating cylinder/bowl to deflect the dispersion towards the wall of the rotating cylinder/bowl; and • a plurality of vertical baffles in the upper rotating cylinder/bowl to confine a separated dispersed phase inside chambers.