2012 hot sale Hollow Alumina Spherere Refractory Bricks factory

Hollow Alumina Sphere Refractory Bricks, 1,high temperature resistance, 2.low thermal conductivity, 3. good thermal insulation - details see: https://www.buildingsupplieshub.com/2012-hot-sale-hollow-alumina-spherere-refractory-bricks-factory-10081939
Place of Origin: Shandong China (Mainland)Brand Name: LeibaoType: Alumina BrickPorosity: Hollow
Color: white ,yellow,whiteFunction: Acid Resistance Bricks,FirebricksFeature: Angle Bricks,Thin BricksTechnique: Sintered
Material: Alumina BlockShape: BrickRefractoriness (Degree): 1770°< Refractoriness< 2000° 
2012 hot sale Hollow Alumina Spherere Refractory Bricks factory
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Hollow Alumina Sphere Refractory Bricks

Scope of application

They are widely used in inner linings of various non-contacted melt high temperature kiln and thermal insulating layers of high temperature kilns.

Physical and Chemical Indexes of Hollow Alumina Sphere Bricks

Name / Indexes/ Item
MLQ-1.5
LQ-1.2
LQ-1.5
LQ-1.7

Chemical composition

Al2O3% ≥
84
98.5
98.5
98.5
Fe2O3% ≤
0.8
0.3
0.3
0.3
SiO2% ≤
15
1.0
1.0
1.0

Bulk density

g/m3≤
1.5
1.2
1.5
1.7

Compressive strength at normal temperature MPa≥

16
3
12
15
Porosity % ≥
58
62
60
58
Soften point at 0.1MPa KD°C≥
1650
1650
1700
1700
Fire resistant (°C)≥
1800
1800
1800
1800
Thermal conductivity
Hot side 1000°C
W/m.k≤
1.2
0.95
1.05
1.15

Packaging Detail:Standard export packing and pallets
Delivery Detail:30 days

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