Product Specifications / Features

Fused Alumina Bubble is produced by blowing the melt of high purity Bayer process aluminain a controlled atmosphere to produce hollow spheres. Due to its low density and extremely low thermal conductivityfused alumina bubble is ideal for high alumina based Insulating Bricks and castables.
Fused Alumina Bubble Chemical composition (%)
Al2O3 98.5min
SiO2 0.3max
Fe2O3 0.15max
Na2O 0.4max
Packing density 0.5-1.0 g/cm3
Damaged rate(%) ≤15 8
Refractoriness(°C) 1800
Particle size 5-0.2mm, 0.2-1mm,1-3mm,3-5mm
Test standard GB/T3044-89
Packing 20kg/plastic bag(Dampproof)
Usage Refractories

Competitive Advantages

Well and High Quality Control ,
Prompt Delivery ,
New Product ,
Competitive Prices ,
Earth-friendly Products ,
Small Order Acceptable ,
OEM Accepted

Patent No./Country

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Safety/Quality Approvals

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Trade Information

FOB, CNF, CFR, CIF