Product Details

Corundum products

Product Description:
Corundum products is the use of high purity fused corundum, mullite, chromium and other raw materials, high pressure dynamic molding, ultra-high temperature sintering. The product has a high temperature, high strength, acid erosion, from H2, CO and other effects of reducing gas having a high temperature insulation, low dielectric constant, and other fine features. Widely used in the blast furnace, the outer steel refining furnace, glass furnace; and petrochemical industry gasifier, gas furnace ethylene, ammonia decomposition furnace; cracker furnace carbon black chemical industry, fertilizer industry; refractory material and ceramic industry and other high-temperature furnace.

Index Item	High Pure Corundum Brick DL-98	Common Corundum Brick DL-95	Common Corundum Brick DL-90	Mullite Corundum Brick MDL-80	Chromium Corundum Brick GDL-85
Al2O3%≥	98.5	95	90	80	85
Cr2O3%≥	——	——	——	——	8
SiO2%≤	0.3	3.0	9.0	18	0.2
Fe2O3%≤	0.2	0.3	0.5	0.5	0.2
R2O%≤	0.3	0.6	0.6	0.4	0.5
Bulk Density g/cm3≥	3.0-3.2	2.9	2.9	2.75	3.1
Compressive Strength at Normal Temperature MPa≥	75	100	100	60	120
℃≥ Fire Resistant	1790	1790	1790	1790	1790
℃ Soften Point at 0.2 MPa Load 0.2MPa≥	1700	1700	1700	1650	1700
1600×3h≤ Reheating Linear Shrinkages	0.2	0.2	0.2	0.3	0.2
1100℃≥ Thermal Shock Stability	6	10	10	20	15

Product use:
For the blast furnace, the outer steel refining furnace, glass furnace; and petrochemical industry gasifier, gas furnace ethylene, ammonia decomposition furnace; black stove chemical industry, fertilizer industry, cracking furnace; Refractories and high-temperature kiln ceramic industry and so on.