Mullite Insulation Brick

Category： Insulation Brick
Size:230*114*64mm
Al2O3 Content: 40-70%
Mould: JM23 JM26 JM28 JM30 JM32
Density: 0.6-1.3g/cm3
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Description	GRADE 23 BRICK	GRADE 26 BRICK	GRADE 28 BRICK	GRADE 30 BRICK	GRADE 32 BRICK
Classification Temperature (℃）	1300	1400	1500	1550	1600
Chemmical Composition（%)
Al2O3	40	56	67	73	79
SiO2	51	41	30	24	20
Fe2O3	≤1.0	≤0.8	≤0.7	≤0.6	≤0.5
Density(kg/m3)	600	800	900	1000	1100
Module of Rupture(MPa)	0.9	1.5	1.8	2.0	2.2
Cold Crushing Strength(MPa)	1.2	2.4	2.6	3.0	3.5
Permanent Linear Change(%)	1230℃*24h≤0.3	1400℃*24h≤0.6	1510℃*24h≤0.7	1620℃*24h≤0.9	1650℃*24h≤1.0
Thermal Conductivity (w/m.k)
200℃	0.15	0.23	0.27	0.28	0.35
350℃	0.18	0.24	0.30	0.35	0.42
400℃	0.19	0.25	0.33	0.38	0.49
600℃	0.23	0.27	0.38	0.40	0.5

Leadsun Refractory supply several grades of insulating brick for use in applications from 900℃ to 1760℃.Each grade of brick is formulated to meet specific thermal and physical requirements.After firing each brick is machined to close dimensional tolerances.

Insulating bricks are manufactured utilising exceptionally high purity clays or mullite or other ceramic materials.The carefully graded organics which are used during the manufacturing process burn out during firing to give a uniform pore structure.