WEAR RATE COMPARISON TEST
Chemco ZTA-W Balls 25 mm vs Steatite Balls 25 mm
Measured over a continuous 120-hour jar mill grinding trial.
1.Test Conditions
Grinding media is weighed on an electronic balance of 10 mg resolution & milled for 24 hrs. after being loaded into the jar with material, charge, and water. After milling, grinding media is unloaded, washed, dried thoroughly and weighed again and weight loss percentage per hour is calculated. This process is repeated every 24 hrs. for a total of 120 hrs. Graph of wear rate versus time is drawn.
Jar mill
Speed
Grinding media charge
Material charge
Water
7.6 L polyurethane lined
30 RPM
Quantity 38% of jar mill's useful volume
1.9 kg silica sand of 0.3 mm size
1.9 L
2.Test Results
Cumulative Weight Loss / hr.
After 24 Hrs.
After 48 Hrs.
After 72 Hrs.
After 96 Hrs.
After 120 Hrs.
Chemco ZTA-W 25mm
( Fromed by rolling )
Steatite Ball 25mm
( Fromed by Pressed )
0.0036 %
0.0027 %
0.0022 %
0.0018 %
0.0016 %
0.0575 %
0.0451 %
0.0416 %
0.0378 %
0.0348 %
A graph of wear rate versus time was plotted. It is inferred from the data that the wear rate for both media decreases over time and eventually stabilizes. Specifically, the wear rate of Steatite balls reduced from 0.0575%/h in the 1st cycle (24 h) to 0.0348%/h in the 5th cycle (120 h). In comparison, ZTA-W balls exhibited significantly superior wear resistance, with its wear rate dropping from 0.0036%/h down to 0.0016%/h after 120 hours, remaining at an extremely low level.