Ball Mill Variable Speed Drive
Ball Mills Steel Ball Mills Lined Ball Mills. Particle size reduction of materials in a ball mill with the presence of metallic balls or other media dates back to the late 1800’s. The basic construction of a ball mill is a cylindrical container with journals at its axis.The motor is usually fitted with a variable speed drive (VSD) to control the rpm of the ball mill. Gearbox – used for speed reduction from the motor to the ball mill. Balls – usually manufactured from manganese alloy steel , but the material depends upon for what material the mill will grind ( chrome steel alloy and rubber also available).1. Variable speed enables to operate easily. 2. Spindle is supported by high precision taper roller bearing. 3. Single speed belt drive provide quiet and easy operation. 4. Mill head can be tilled 90 degree. 5. Bigger table provides capacity. 6. The dovetail rails are equipped with adjustable taper inserts for greater wear resistance. 7.(24.8 lb) of ball mill feed sample from plant survey. Sample is reconstituted with water to be the same percent solids as the plant ball mill discharge. Mill speed 35.2 rpm (65 percent of critical speed) Length of time of test 363 seconds Average torque reading 1,056 in-lbs Mill HP = (1,056 in-lbs 12 in. ft) x (35.2 rpm.