Description of Sintered Mullite Insulation Brick Insulating Refractory Brick High Abrasion Resistance
Sintered mullite bricks are a type of high-temperature refractory material known for their excellent thermal stability and resistance to thermal shock. They are primarily composed of mullite crystals, which are formed through a sintering process involving raw materials like alumina and silica.

Sintered mullite bricks are primarily composed of mullite, a crystalline material made up of alumina (Al₂O₃) and silica (SiO₂). The specific composition may vary depending on the manufacturer and the intended application.

Features of Rongsheng Refractory Factory Supply Sintered Mullite Brick
High Temperature Stability
Low Thermal Expansion
Excellent Thermal Shock Resistance
Chemical Inertness

Applications of Higher Quality Assured Sintered Mullite Brick
They find applications in industries such as ceramics, glass, iron and steel, non-ferrous metals, and petrochemicals. They are used in furnaces, kilns, and other high-temperature equipment.

Technical Parameter of Lower Price Higher Quality Sintered Mullite Brick:

Item	Index
	SM65	SM70	SM75	SM80
Al2O3 %	≥64	≥68	≥74	≥78
Fe2O3 %	≤1.2	≤1.2	≤1.0	≤0.8
Apparent Porosity %	≤18	≤18	≤17	≤16
Bulk Density g/cm3	≥2.45	≥2.50	≥2.60	≥2.75
Cold Crushing Strength MPa	≥60	≥70	≥75	≥85
0.2Mpa Refractoriness Under Load ℃	≥1580	≥1600	≥1650	≥1700
Permanent Linear Change Rate % 1500℃×2h	-0.4~+0.1	-0.3~+0.1	-0.2~+0.1