Model: | - |
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Brand: | ALPHA-BETA ALUMINA |
Origin: | Made In China |
Category: | Construction & Decoration / Fire Retardant |
Label: | FUSED CAST ALUMINA , HIGH ALUMINA , ZM |
Price: |
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Min. Order: | - |
Last Online:03 Dec, 2010 |
α-β block is a dense, fused cast refractory containing approximately 38-48% alpha alumina and 48-58% beta alumina crystals. The intergrowth of crystalline phases and low interstitial glass boundary phase increase the structural stability of Alpha-Beta under load at high temperature.
Typical Chemical Composition:
Al2O3………………………………94%
SiO2………………………………1.3%
Na2O………………………………3.7%
Other………………………………< 1%
Physical characteristic:
Bulk density Ib/ft3(g/cm3)……………………………………………209(3.35)
(excluding shrinkage cavity)
Apparent porosity %………………………………………………………… <2
Linear change under load %………………………………………………… 0
Cold crushing strength psi(kg/cm2)3………………………… 28400(2000)
Modulus of Rupture
Cold psi (kg/cm2)3………………………………………………3800 (270)
Hot psi (kg/cm2)4…………………………………………………3270 (65)
Refractoriness under load of 0.2Mpa……………………………………
Typical Applications:
Glass furnaces
Paving
Superstructures
Refiner Sidewalls
Channels
Crowns
Available Casting Techniques:
Normal casting
Void free