Inert Ceramic Ball
Applications
Widely used in deep processing of various ceramic material, enamels,sand glasses, as grinding media in ball mills and vibration mills.
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Model |
99% Pure alumina Ceramic Ball |
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Color |
White |
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Shape |
Ball |
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Chemical composition |
|
Min. % |
Max. % |
Usual % |
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|
Al2O3 |
99 |
99.6 |
99.3 |
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SiO2 |
/ |
0.2 |
0.18 |
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Fe2O3 |
/ |
0.2 |
0.02 |
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TiO2 |
/ |
0.55 |
0.02 |
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CaO |
/ |
0.1 |
0.2 |
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MgO |
/ |
0.1 |
0.05 |
|
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Na2O |
/ |
0.25 |
0.1 |
|
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K2O |
/ |
0.2 |
0.13 |
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Physical properties |
Leachable Iron (%) |
≤0.01 |
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Apparent Porosity by Weight (%) |
≤7.0 |
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H2O absorption (wt.%) |
<4.0 |
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Acid resistance (%) |
>99.8 |
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Alkaline resistance (%) |
≥90 |
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Bulk Density |
(g/cm3) |
2.1 |
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(lb/ft3) |
131 |
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Specific density |
(kg/m3) |
3400 |
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(lb/ft3) |
212 |
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Moh’s hardness (scale) |
>8.0 |
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Thermal conductivity (w/m2.k) |
0.7-0.8 |
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Max. Operating Temperature |
(℃) |
1550 |
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(℉) |
2822 |
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Thermal expansion (%) (500℃) |
0.10 |
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Thermal Shock Stability (times) (1000℃ then water cooling) |
10 |
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