Neutral lining material Alumina induction furnace refractory

Refractory is an unshaped refractory material which is prepared by ramming (manual or mechanical) method and hardened by heating at a higher temperature.Ramming materials into acid, neutral, alkaline three .ItemBasic mineralCrystal systemCrystal colorMohs hardnessDensityWhite aluminum oxid

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Refractory is an unshaped refractory material which is prepared by ramming (manual or mechanical) method and hardened by heating at a higher temperature.Ramming materials into acid, neutral, alkaline three .
ItemBasic mineralCrystal systemCrystal colorMohs 
hardness
Density
White aluminum oxideα- Al2O3HexagonalWhite93.90g/cm3
ItemMicro hardnessElectrical 
resistivity
Grinding ability(compared with 
diamond as one)
Linear expansion
 coefficient(when 900
ºC α•10-6k-1)
White aluminium oxideHV2200-23001014-1016Ω•cm0.128.3
 Note: Special requirements on chemical composition and other terms can be satisfied through discussion.

Parameter Index
Chemical CompositionPhysical Composition
AL2O3 ≥ 99.5Color:White
Na2O ≤ 0.35Mohs Hardness: 9
Fe2O3 ≤ 0.1Micro hardness: 2200-2300kg/mm2
SiO2 ≤ 0.1Bulk Density: 3.50g/cm3
 Melting Point: 2250ºC

Feature  

1.On the face in contact with liquid metal there is a dense sintered layer where tightness of liquid metal is quite perfect.

2.Thermal conductivity is lower than other refractoriness so the Thermal loses are less than any other kind of refractory.

3.Good resistance to temperature change.

4.Low cost in furnace lining.

5.Short heating and sintering time through dry preparation Of masses.


Neutral Lining Material Alumina Induction Furnace Refractories
Neutral Lining Material Alumina Induction Furnace Refractories
Neutral Lining Material Alumina Induction Furnace Refractories





 

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