In a typical experiment, ball milling was carried out in a planetary ball mill increased with an increase in the ball milling time before leveling off at 48 h. .. graphite (ECG) in solid state without involving hazardous chemicals.
Hazards Screw conveyors are troughs with a revolving longitudinal shaft on which a spiral or twisted plate is designed. In going nip points, of turning helical flights for the entire length of the screw conveyor, exist between the revolving shaft and trough.