Mullite Insulation Brick

1. Lightweight and High Strength;

2. Good Thermal Insulation Effect;

3. Accurate and Customized Dimension;

4. Lower Thermal Conductivity;

5. Good Thermal Shock Resistance;

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Technical Data

Item/Grade		MG-23	MG-25	MG-26	MG-27	MG-28	MG-30	MG-32
ω (Al₂O₃)/%	μ₀ ≥	40	50	55	60	65	70	77
ω (Al₂O₃)/%	σ	1.0
ω (Fe₂O₃)/%	μ₀ ≤	1.0	1.0	0.9	0.8	0.7	0.6	0.5
ω (Fe₂O₃)/%	σ	0.1
Bulk Density (g/cm³)	μ₀ ≤	0.55	0.80	0.85	0.90	0.95	1.05	1.35
Bulk Density (g/cm³)	σ	0.05
Cold Crushing Strength/MPa	μ₀ ≥	1.0	1.5	2.0	2.5	2.5	3.0	3.5
	σ	0.2	0.5			1.0
	μ_min	0.9	1.3	1.8	2.2	2.2	2.7	3.2
Permanent Linear Change/% (T/℃*12h)	Test Temperature T/℃	1230	1350	1400	1450	1510	1620	1730
Permanent Linear Change/% (T/℃*12h)	X_min~X_max	-2
Thermal Conductivity Coefficient ≤/[W/(m·K)] (Average Temperature ±25℃)	200	0.18	0.26	0.28	0.32	0.35	0.42	0.56
	350	0.20	0.28	0.30	0.34	0.37	0.44	0.60
	600	0.22	0.30	0.33	0.36	0.39	0.46	0.64
0.05MPa Refractoriness Underload ≥T_0.5/℃		1080	1200	1250	1300	1360	1470	1570

Applications of Mullite Refractory Brick

Suitable for the refractory lining and backing insulation layer of pyrolysis furnaces, hot blast furnaces, ceramic roller kilns, electric porcelain drawer kilns and various industrial resistance furnaces.