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Insulation Mullite Brick

The bulk density of thermal insulation mullite bricks can be between 0.5 0.6 0.8 0.9 1.0 1.2 1.5 according to user requirements. It acts on the high temperature kiln and directly contacts the flame, with good thermal insulation effect, high compressive strength and low thermal conductivity. The crystallinity of fused mullite is larger than that of sintered mullite, and its thermal shock resistance is better than that of sintered products. Their high temperature performance is mainly determined by the alumina content and the homogeneity of the mullite phase and glass distribution. Features 1. Lo

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Refractory Fire Brick

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Insulation Mullite Brick Details

Features

1. Low thermal melting, due to low thermal conductivity, mullite series lightweight insulating bricks accumulate little heat energy, and the energy saving effect is obvious in intermittent operation;

2. Low thermal conductivity, with good thermal insulation effect;

3. Low impurity content has very low oxide content such as alkali metal in iron box, therefore, high refractoriness;

4. High thermal compressive strength;

5. It can be processed into special shapes to reduce the number of bricks and joints;

6. The appearance size is accurate, the speed of masonry is accelerated, the usage of refractory mud is reduced, and the strength and stability of the masonry are guaranteed, thereby prolonging the life of the lining.

Applications

Mainly used in metallurgical hot blast stoves with high air temperature above 1400℃, parts of torpedo vehicles impacted by molten iron, slag lines, furnace roofs of steelmaking electric arc furnaces, forehearths of glass melting furnaces, regenerator arches, superstructures, ceramic sintering kilns, Ceramic roller kiln, tunnel kiln, electric porcelain drawer kiln, dead angle furnace lining of petroleum cracking system, glass crucible kiln and lining of various electric furnaces, etc. The wall of the clarifier can directly contact the flame.

Physical And Chemical Indicators

Item	Performance
Item	JM-23	JM-24	JM-26	JM-28	JM-30
Classification temperature（℃）	1260	1350	1430	1540	1650
Bulk density g/cm3	0.6	0.8	0.8-1.0	0.9-1.1	1.0-1.2
Compressive strength Mpa	1.3	2.0	3.0	3.5	3.5
Reburn line changes %（℃xh）	1250×12 -0.5	1320×12 -0.5	1400×12 -0.5	1510×12 -0.9	1600×12 -0.9
Thermal Conductivity W/m.k(350±25℃）	0.22	0.26	0.26	0.32	0.41
AL2O3	50	55	60	65	70
Fe2O3	1.2	1.2	1.2	1.0	1.0

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