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type of product: White Corundum, sizing F22 – F150                           White Corundum, sizing F180 – F220

ABRASIVE GRAINS OF WHITE CORUNDUM

sizing F22 – F220

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 at grain F40

  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 poperties:

3.1. Magnetic separation

  F22 – F90 F100 – F150 F180 – F220
magnetic separation 0,10 % max. 0,20 % max. 0,20 % max.
metal particulares 0,001 % max. 0,002 % max. 0,008 % max.

3.2.  Bulk density

granulation g/dm3 min. granulation g/dm3 min.
F22 1710 F70 1590
F24 1710 F80 1570
F30 1700 F90 1530
F36 1680 F100 1510
F40 1680 F120 1500
F46 1660 F150 1480
F54 1660 F180 1460
F60 1640 F220 1440

3.3. Granulation

Granulation compound of grains 99 A I b F22 to F 220 has to meet requirements FEPA standard 42-D-1984. After agreement there is also a possibility to supply grainmixtures in framework of technological possibilities.

3.4. Colour – white.

4.     Usage:

a)    production of white even colour grinding tools and instruments with ceramic, resinous, magnesite, shellac and rubber binder
b)     production of refractory blocks, bricks, cements, ceramic pouches, catalyzers and compacting mixtures
c)    dishing up in free form, drum, vibrating - removal of fraies
d)    special blasting of different materials and products
e)    production of filters and diffusion nozzles
f)     grinding and lappeding of materials with free grains
g)    production of electroisolating component parts

         
 
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