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Ceramic Liners
  Grinding Media  

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Special
CERAMIC LINERS 

      Aum Techno produces ball mill liners with tongue and groove in hard porcelain and high alumina in mainly two sizes (thickness) 6 X 2/2 X 2 and 6 X 2/2 X 3.  Because of the tongue and groove pattern, they ensure highly interlocking lining with minimum cement joint.  The shell liners are tapper and the end liners are flat for 6 minimum gap.  
 

Properties High Alumina
(with 50% AI203 content)
Hard Porcelain
wBulk Density
wPorosity
wColor
wHardness
wCompressive Strength
wExpected life
wResistance to abrasion
2.7
Nil
Milky White
8.5
8400Kg/cm2
5 years
Very High
2.4
Nil
Ivory White
7.5
6500 Kg/cm2
2 to 3 years
Very High

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 GRINDING MEDIA

  
AUM TECHNO produces grinding media in hard porcelain, high alumina and steatite HF 82 (KER221). The media are made in both spherical and cylindrical shape. Steatite media are made by dry pressing in single stroke or rotary press for mass-producing of components. The sizes available in steatite are 4 mm to 15 mm Dia. Alumina and Porcelain media are manufactured by vacuum extrusion followed by cutting and compression in mechanical or hydraulic presses and or hand shaped. The bigger Dia balls from 1.5" to 3" are hand shaped. They are intentionally made somewhat non-uniform sphere. This non-uniform size is the added advantage for better and faster grinding because of higher surface contact. It is well known that the grinding in the ball mill is mainly due to the surface contact of the media and the body to be ground.
           

Properties

Hard Porcelain

Steatite

High Alumina

AIZir Media

wComposition
wBulk Density
wColor
wPorosity
wComprehensive Strength hardness

AI2O3, 30%
2.4
Ivory White
Nil
6500/Kg/cm2
7.5 Mohs

MgO SiO2
2.7
White
Nil
8500/Kg/cm2
7.5 Mohs

AI2, 50%
2.75
White
Nil
8500/Kg/cm2
8.0 Mohs

AI Zicronbased
3.0
White
Nil
10000 kg/cm2
8.5+

   
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