 |
Mixed
corundum M |
|
|
| Electrocorundum,
reclaim from common and precious corundums |
|
|
 |
|
Product made from ceramic grinding
wheels and corundum dusts from the abrasives industry.
High-quality mixture of common and precious corundums.
Grinding wheels, blasting agents, antiwear agents, refractory
products |
| Chemical
analysis (average) |
|
|
| Al2O3 |
|
min. |
88 - 91 % |
|
Fe2O3 |
|
less than |
0,3 % |
| TiO2 |
|
|
0,7 % |
|
Na2O |
|
|
0,35 % |
| SiO2 |
|
|
7,0 % |
|
CaO + MgO |
|
|
1,2 % |
|
|
|
|
|
|
|
| Specific weight: |
|
3,90 g/cm³ |
| Hardness: |
|
Knoop 1800, Mohs 9 |
| Melting point: |
|
2040 °C |
| Grain shape: |
|
cubic, angular |
| Bulk weight: |
|
1,5 - 1,9 g/cm³, depending
on grain size |
|
|
|
|
|
|
|
| The available
grain sizes are based on the FEPA recommendation. |
| Designation |
Range
of grain sizes |
|
|
Grain
sizes according to DIN |
| FEPA-N0. |
in µm |
|
|
Grain
sizes in mm |
| No.10 |
1680 - 2380 |
|
|
3,00 - 6,00 |
| No.12 |
1410 - 2000 |
|
|
1,00 - 3,00 |
| No.14 |
1190 - 1680 |
|
|
1,00 - 2,00 |
| No.16 |
1000 - 1410 |
|
|
0,50 - 1,00 |
| No.20 |
840 - 1190 |
|
|
0,25 - 0,50 |
| No.24 |
600 - 840 |
|
|
0,12 - 0,25 |
| No.30 |
500 - 710 |
|
|
0,06 - 0,12 |
| No.36 |
425 - 600 |
|
|
0,00 - 1,00 |
| No.40 |
355 - 500 |
|
|
0,00 - 0,50 |
| No.46 |
300 - 425 |
|
|
0,00 - 0,15 |
| No.54 |
250 - 355 |
|
|
|
| No.60 |
210 - 300 |
|
Korngemische |
Korngröße (µm) |
| No.70 |
180 - 250 |
|
Nr. 16/20 |
840 - 1410 |
| No.80 |
150 - 210 |
|
Nr. 24/36 |
425 - 840 |
| No.90 |
125 - 180 |
|
Nr. 40/60 |
210 - 500 |
| No.100 |
106 - 150 |
|
Nr. 70/90 |
150 - 250 |
| No.120 |
88 - 125 |
|
Nr. 100/150 |
90 - 180 |
| No.150 |
63 - 106 |
|
Nr. 180/220 |
53 - 106 |
| No.180 |
53 - 88 |
|
|
| No.220 |
44 - 75 |
|
Other grain sizes
and |
|
|
|
special sizes
available on request. |
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|
Corundum is not dangerous to health.
Its use is not associated with a danger of silicosis. Corundum is
neither carcinogenic nor toxic. |
|
|
|
|
|
|
25/50
kg paper bags, palletised on 1 t pallets and shrink wrapped.
1 – 1.5 t big bags with discharge chute on pallet. |
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