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PRODUCTS >
GRINDING MEDIA AND LININGS > SPHERES |
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Our grinding media are
made 90% of allumina that guarantees major hardness,
major purity and a 30-40% stronger grinding power in
comparison to other spheres. This permits the use of
smaller diameter spheres which helps to improve
grinding in shorter time.
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Typical pysical features |
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Specific weight (gr/cm3) |
3,57 |
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Density any which way (kg/l) |
2,20 |
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Contents in Al2O3 |
90% |
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Mohs hardness |
9 |
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Rockwell hardness |
78 |
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Compression resistance (kg/cm2) |
21 -
22.000 |
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Flecting resistance (kg/cm2) |
3.200 - 3.400 |
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Elastic module |
2,7 x
10exp6 |
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Porosity |
0 |
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Colour |
bianco |
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Spheres dimensions |
Approximate gramme weight of each sphere |
Number spheres per Kg |
Approximate surface area |
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mm |
inches |
g |
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cm2/kg |
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19 |
3/4 |
13,30 |
75 |
850 |
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25,4 |
1 |
32,00 |
31 |
628 |
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31,8 |
1 1/4 |
62,00 |
16 |
505 |
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38,1 |
1 1/2 |
100,00 |
10 |
457 |
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44,4 |
1 3/4 |
165,00 |
6 |
373 |
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50,8 |
2 |
250,00 |
4 |
325 |
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63,5 |
2 1/2 |
500,00 |
2 |
254 |
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