Main Composition:Al2O3+SiO2 Application:Insulation layer for various kinds of industrial furnaces Al2O3:37-77% Color:White Standard Size:230*114*65 mm Raw Material:Mullite Classification temperature:1260-1730℃ Package:Export wooden pallets and polyboard

Product Introduction

Mullite thermal insulation brick is a high alumina refractory with mullite (3Al2O3•2SiO2) as the main crystalline phase. Generally, the alumina content is between 37% and 77%.

Features

1. High temperature resistance. 2. Light weight. 3. Low thermal conductivity. 4. Energy saving.

Application

Mullite insulation bricks can be directly used in the lining of high-temperature kilns. At present, they have been widely used in the lining of shuttle kilns, roller kilns, glass and petrochemical kilns.

Item		JM23	JM26	JM28	JM30	JM32
Al2O3(%)		≧37	≧54	≧64	≧72	≧77
Fe2O3(%)		≦1.0	≦0.9	≦0.8	≦0.7	≦0.5
Classification Temperature(℃)		1260	1400	1510	1620	1730
Bulk Density(g/cm³)		0.55-1.0	0.8-1.0	0.85-1.0	≧1.0	≧1.25
Cold Crushing Strength (Mpa)		≧1.2	≧1.6	≧2.1	≧2.5	≧3.5
Modulus of Rapture (Mpa)		≧0.9	≧1.4	≧1.6	≧2.1	≧2.1
Thermal Expansion 1000℃ (%)		0.5	0.7	0.8	0.9	1.1
Reheating Linear Change (%) CT-30 ℃X 8H		1230℃-0.5	1400℃-0.5	1510℃-0.5	1620℃-0.9	1730℃-0.9
Thermal Conductivity （W/m.k）	400℃	0.14	0.27	0.32	0.41	0.49
	600℃	0.16	0.29	0.34	0.43	0.50
	800℃	0.18	0.31	0.36	0.44	0.51
	1000℃	0.20	0.33	0.38	0.45	0.53