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| type
of product: |
White Corundum for refractory products |
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ABRASIVE GRAINS FOR
REFRACTORY PRODUCTS
1. White Corundum is
produced by fusing of clean Al2O3 in electrical arc
furnace. After crushed it and milled it on ball mills, arised
corundum grains are several times magnetized and sieved according to the sizes.
2. Chemical compound:
- is made a grain F40
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guaranteed analysis |
typical analysis |
| Al2O3 |
99,20 % min. |
99,50 % |
| Fe2O3 |
0,12 % max. |
0,07 % |
| SiO2 |
0,10 % max. |
0,056 % |
| CaO |
0,10 % max. |
slight |
| Na2O |
0,28 % max. |
0,21 % |
| loss by ignition |
0,20 % max. |
0,15 % |
3. Physical properties:
3.1. Magnetic separation
| granulation |
magnetic particulares |
metal particulares |
| F8/24 |
0,2 % max |
0,1 % max. |
| F14/24 |
1,5 % max |
0,1 % max. |
| F30/80 |
1,5 % max. |
0,5 % max |
| F8/P |
0,8 % max. |
0,2 % max. |
| F100/P |
2,0 % max. |
1,0 % max |
3.2. Bulk density
| granulation |
g/dm3 min |
| F8/24 |
1650 |
| F14/24 |
1650 |
| F30/80 |
1700 |
| F8/P |
1700 |
| F100/P |
1550 |
3.3. Granulation
After agreement is also possible to produce
grainmixtures of White Corundum for refractory products with marking in
mm, for example 3-6 mm, 1-3 mm etc.
| granulation |
size of grains - specific size in mm |
content in % according to the weight |
| F8/24 |
3,35 and higher |
10 % max. |
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3,35 – 0,6 |
difference to 100 % |
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0,6 - and lower |
10 % max. |
| F14/24 |
2,36 and higher |
0 % max |
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2,36 – 2,0 |
1,0 % max |
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2,0 – 1,4 |
35,0 % max |
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0,5 – 0,3 |
5,0 % max. |
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0,3 and lower |
3,0 % max. |
| F30/80 |
0,85 and higher |
0,5 % max. |
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0,85 – 0,6 |
15,0 % max |
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0,125 – 0,09 |
10,0 % max. |
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0,09 and lower |
10,0 % max |
| F8/P |
3,35 and higher |
.5,0 % max |
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3,35 – 0,6 |
45,0 % max |
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0,6 and lower |
difference to 100 % |
| F100/P |
0,25 and higher |
0,5 % max |
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0,25 – 0,15 |
30,0 % max. |
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0,053 and lower |
60,0 % max |
3.4.
Colour - white.
4. Usage:
a) production of refractory blocks, bricks, cements,
ceramic pouches, catalyzers and compacting mixtures
b) production of electro-insulating corpus
c) dishing-up of parts in form of a free grain
d) blasting with dry and wet way
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