Ball Mill Drawing - 911 MetallurgistMar 17, 2017 . 911Metallurgist Mineral Processing & Process Development Laboratory. We have a metallurgical test for every possible mineral type and treatment. Need ENGINEERING Services or Plant TROUBLESHOOTING? We can IMPROVE ALL PLANTS / Mineral Processing Engineering & LABORATORY Ore.drawing of ball mills,Laboratory Ball Mill Plans - Homemade Ball Mill / Rod Mill DrawingSep 26, 2017 . By this drawing, it is suggested that a typical homemade laboratory rod mill or ball mill might be fabricated from 20 cm (8 inch) diameter schedule 40 type 316 stainless steel pipe and would be about 38 cm (15 inches) long. The plans show stainless steel grinding rods for this size of mill may be a graduated.