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type of product: White Corundum for refractory products                      

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

  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.
  3,35 – 0,6 difference to 100 %
  0,6 - and lower 10 % max.
F14/24 2,36 and higher 0 % max
  2,36 – 2,0 1,0 % max
  2,0 – 1,4 35,0 % max
  0,5 – 0,3 5,0 % max.
  0,3 and lower 3,0 % max.
F30/80 0,85 and higher 0,5 % max.
  0,85 – 0,6 15,0 % max
  0,125 – 0,09 10,0 % max.
  0,09 and lower 10,0 % max
F8/P 3,35 and higher .5,0 % max
  3,35 – 0,6 45,0 % max
  0,6 and lower difference to 100 %
F100/P 0,25 and higher 0,5 % max
  0,25 – 0,15 30,0 % max.
  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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