High Alumina castable High Purity Refractory Castable Raw Material White Fused Alumina

Product Description

High Alumina Refractory Castable is an indeterminate refractory castable with an overall aluminum content of more than 75% composed of high-aluminum aggregate with a content of aluminum oxide greater than 75% as a granular raw material, combined with high-aluminum powder and additives. After the initial setting, the standard curing to 28 days, the compressive strength can reach 40--60MPa.

1. High Alumina Refractory Castables are resistant to high temperature and have low porosity

2. High compressive strength and good wear resistance

3. Good corrosion resistance

4. Good thermal shock resistance and high strength

Index of High Alumina Refractory Castable

Model
chemical composition(%)	Al2O3	≥70
	Al2O3+SiC	----
	CaO	≤4
	SiC+SiO2	-----
Bulk density(g/cm³)	110℃ X 24h	≥2.50
Compressive strength(Mpa)	110℃ X 24h	≥70
	1100℃ X 3h	≥80
	1400℃ X 3h	≥80
Flexural strength(Mpa)	110℃ X 24h	≥8
	1100℃ X 3h	≥10
	1400℃ X 3h	≥10
Rate of change of line after burning(%)	1100℃ X 3h	±0.3
	1400℃ X 3h	±0.6
Load softening start temperature(℃)		1500