Alumina hollow ball brick is alumina hollow ball, corundum powder, calcined powder as raw material, homogenizing, molding, high temperature sintering. Products with high temperature, acid erosion, low thermal conductivity, good insulating properties, low bulk density and other characteristics, mainly used in ceramic, porcelain, grinding wheels, refractories and other industries a variety of high-temperature furnace lining and insulation work lining.

Project/Index/Name	MLQ84	MLQ90	LQ-1.2	LQ-1.5	LQ-1.7
Al2O3%≥	84	90	98.5	98.5	98.5
Fe2O3%≤	0.8	0.5	0.3	0.3	0.3
SiO2%≤	15	9	1.0	1.0	1.0
Bulk Density(g/cm³)≤	1.5	1.5	1.2	1.5	1.7
Cold Crushing Strength Mpa ≥	16	15	3	12	15
Apparent Porosity %≥	58	60	62	60	58
RUL℃ 0.1Mpa≥	1650	1700	1700	1700	1700
Refractories℃ ≥	1800	1800	1800	1800	1800
Thermal Conductivity W/m.K(hot surface1000℃)≤	1.2	1.15	0.95	1.05	1.15

Zibo SK Refractory Co., Ltd

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Main Products:Fire clay brick, high alumina brick, insulating brick, ceramic fiber, fire clay mortars, insulating mortars

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