High Alumina Fire Brick

• Al2O3: 55-80%；
• Apparent Porosity: 19-26%;
• Refractoriness Under Load: 1420-1530MPa;
• 冷压强度：40-70MPa；
• 标准尺寸：230*114*65 毫米；
• Certification: ISO9001/ISO14001/ISO45001/ISO50001;
• Sample: testing of sample is available;

Description of High Alumina Fire Brick

High alumina brick is a kind of aluminum silicate refractory product with aluminum oxide (Al2O3) content higher than 80%. It is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, refractoriness above 1770°C. It has good slag resistance and is used for the lining of masonry steelmaking electric furnaces, glass melting furnaces, and cement rotary furnaces.

Kerui High Alumina Fire Bricks Technique Data

项目/等级		LZ-80	LZ-75	LZ-70	LZ-65	LZ-55	LZ-48	LZ-75G	LZ-65G	LZ-55G
ω (Al2O3)/%	μ0 ≥	80	75	70	65	55	48	75	65	55
	σ	1.5
表观孔隙率/%	μ0 ≤	21 (23)	24 (26)	24 (26)	24 (26)	22 (24)	22 (24)	19	19	19
	σ	1.5
冷压强度/兆帕	μ0 ≥	70 (60)	60 (50)	55 (45)	50 (40)	45 (40)	40 (35)	65	60	50
	X分钟	60 (50)	50 (40)	45 (35)	40 (30)	35 (30)	30 (35)	55	50	40
	σ	15
0.2MPa Refractoriness Underload/℃	μ0 ≥	1530	1520	1510	1500	1450	1420	1520	1500	1470
	σ	13
Permanent Linear Change/%	X分钟 Xmax	1500℃*2h -0.4~0.2		1450℃*2h -0.4~0.1				1500℃*2h -0.2~0.1	1450℃*2h -0.2~0

Advantages of High Alumina Refractory Bricks

High refractoriness； Excellent thermal shock resistance； Excellent slag resistance； Excellent slag resistance； Low Thermal Conductivity；

Application of High Alumina Refractory Bricks

• Iron and steel manufacturing industry: blast furnace, hot blast stove, electric furnace, ladle, tundish, heating furnace, refining furnace, heating furnace, annealing furnace, cupola;
• Non-ferrous metal industry: smelting furnace,refining furnace, reverberatory furnace, converter;
• Building materials industry: cement kiln, glass kiln, ceramic kiln, lime kiln, kiln car, tunnel kiln;
• Energy and incineration: coke oven, circulating fluidized bed boiler, carbon roaster, incinerator.