VIBRA-DRUM® Grinding Mill & Crushing Mill | General KinematicsThe capital cost of a VIBRA-DRUM® Grinding Mill is significantly less than a rotary grinding mill containing a comparable media load. There are no drive speed reducers, ancillary machinery, nor large support bearings. The VIBRA-DRUM® Grinding Mill has very few moving parts. A VIBRA-DRUM® Grinding Mill does not.magnetite grinding equipment,Characterization and Pre-Concentration of Low-Grade . - MDPIAug 4, 2017 . by fine grinding, whereas the content of vanadium and titanium in sphene was higher than . low-grade vanadium-titanium magnetite ore which contains 0.050% V2O5, 1.67% TiO2 and 8.53% Fe. Keywords: .. Wuhan Hengle Mineral Engineering Equipment Co., Wuhan, China). 3. Results and Discussion.