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Comparison of Wear
Rates of Various Media
Grinding System:
Balls Size:
Φ
5mm
Ball Mill Size: Diameter = 96mm, Length =
100mm
Ball Mill Speed: 100 R.P.M.
Constant Temperature Drier: The Standard
Working Temperature - 120ºC
Mill Charge:
Media to be tested: 500g (This is the
Target Media of Alumina, YSZ, MSZ and even
Glass)
Abrasive medium: ZTA Medium 400g
Water: 500 ml
Procedure:
Washing balls to clean them of any
adherent impurities and dry them in the
Constant Temperature Drier for 2 hours at
120ºC. This will remove the water used for
cleaning.
After cooling the balls naturally, weigh
the balls on a sensitive weighing machine.
Record this observation as ‘W1’.
Load the ball mill with abrasive medium
and the media. Add 500 ml of water and run
the mill for 48 hours. The running time is
recorded as ‘T’.
After the mill is run for desired time,
the target media is removed and once again
dried at 120ºC.
After cooling the balls naturally, weigh
the balls on a sensitive weighing machine.
Record this observation as ‘W2’.
Results:
The wear rates (gm/gm-hour or ppm/hour)
may be calculated by using following
equation:
Wear Rate = _ (W1 – W2)_
(W1
x T)
Graphical Summary of the Results of
Various Media:
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