1,white fused alumina bubble for refractory 2,shape:ball 3,enjoy a high reputation 4,reasonable prices

Fused alumina bubble is produced by blowing the melt of high bayer process alumina a controlled atmosphere to produce hollow spheres.Due to its low density and extremely low thermal conductivity fused alumina bubble is ideal for high alumina based insulating Bricks and castables.

CHEMICAL COMPOSITION	QUOTA	Typical Values
Al2O3%>	99	99.4
SiO2%<	0.2	0.17
Na2O%<	0.2	0.15
Fe2O3%<	0.15	0.08
PACKING DENSITY(g/cm3)	0.5-1.0
PACKING SIZE(Φmm)	0.2-5

high purity alumina bubble of refractory material