Mullite Insulating Brick-

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Mullite Insulating Brick

Mullite insulating brick is produced from high pure mullite by adding alumina powder according to different type, and then shaped at high temperature. The carefully-graded organic fillers in brick is burned out to give a uniform controllable porous structure during sintering, which make the product feature low thermal conductivity and excellent heat insulation.

Features:

High insulating properties

Strong compressive strength

Low heat storage

High purity

Tight dimensional tolerance

Energy saving

Low impurities

Applications:

Primary hot face linings

Back-up insulation for furnaces and kilns

Flue insulation

Sulphur recovery equipment

Hot blast stoves

Technical data:

Item	JM23	JM26	JM28	JM30	JM32
AL2O3(%)	38-44	49-58	62-66	70	73
Fe2O3(%)	1.0	0.9	0.8	0.7	0.6
Classification Temperature (℃)	1350	1430	1500	1550	1600
Bulk Density (g/cm3)	0.8-1	0.8-1	0.8-1	0.8-1	0.8-1
Reheating Linear Change (%) CT-30 ℃X 8H	1250℃ -0.5	1400℃ -0.5	1500℃ -0.5	1550℃ -0.5	1600℃ -0.5
Cold Crushing Strength (Mpa)	1.2	1.9	2.5	2.8	3.0
Modulus of Rupture (Mpa)	1.0	1.2	1.4	1.6	1.8
Thermal conductivity350℃（W/m.k）	0.15	0.26	0.33	0.38	0.43
Thermal Expansion1000℃（%）	0.46	0.47	0.48	0.48	0.49