how a ball mill works drawing
Laboratory Ball Mill Plans Homemade Ball Mill / Rod Mill Drawing. Sep 26, 2017 A similar but smaller 30 cm x 30 cm 12 inch x 12 inch laboratory ball mill with 40, 30, 25 and 20 mm balls 1 1/2, 1 1/4, 1 and 3/4 inch is used for their ball mill work index calculations.