Systems for recycling slurry materials during polishing processes are provided. One system includes a polisher having an inlet and drain outlet, and a slurry storage tank to supply a slurry including a preselected material to the polisher inlet, and a recycling assembly including a cross flow filter including an inlet to receive a waste slurry including the preselected material from the polisher drain outlet, where the cross flow filter is configured to concentrate the preselected material in an outlet slurry, a density meter configured to measure a concentration of the preselected material in the filter outlet slurry, a valve coupled to the filter outlet and configured to supply the slurry storage tank, and a controller coupled to the density meter and valve, where the controller is configured to open the valve when the concentration of the preselected material reaches a first concentration threshold.