　　Mullite poly light heat-insulating brick is a product made by mixing and mixing mullite, polylight ball and binder in a certain ratio, extruding and molding, and firing after high temperature. Mainly used for industrial furnace insulation, energy saving and consumption reduction.

Physical and chemical indicators:

Item	MJ-1400			MJ-1500
Item	0.6	0.8	1.0	0.6	0.8	1.0
Al2O3 % ≥	50			66
Fe2O3 % ≤	1.0			0.8
Bulk Density g/cm³ ≤	0.6	0.8	1.0	0.6	0.8	1.0
Compressive strength at room temperature Mpa ≥	1.9	3.9	7.8	1.9	3.9	7.8
0.2MPaLoad softening start temperature ℃ ≥	1300	1350	1400	1350	1400	1450
Thermal Conductivity【W/(m·K)】average temperature（350±10）℃ ≤	0.25	0.35	0.50	0.25	0.35	0.50

Mullite poly light brick

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